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| 1 | Continuous flow removal of acid fuchsine by dielectric barrier discharge plasma water bed enhanced by activated carbon adsorption显示文摘Continuous processes which allow for large amount of wastewater to be treated to meet drainage standards while reducing treatment time and energy consumption are urgently needed. In this study, a dielectric barrier discharge plasma water bed system was designed and then coupled with granular activated carbon (GAC) adsorption to rapidly remove acid fuchsine (AF) with high efficiency. Effects of feeding gases, treatment time and initial concentration of AF on removal efficiency were investigated. Results showed that compared to the N2 and air plasmas treatments, O2 plasma processing was most effective for AF degradation due to the strong oxidation ability of generated activated species, especially the OH radicals. The addition of GAC significantly enhanced the removal efficiency of AF in aqueous solution and shorten the required time by 50%. The effect was attributed to the ability of porous carbon to trap and concentrate the dye, increasing the time dye molecules were exposed to the plasma discharge zone, and to enhance the production of OH radicals on/in GAC to boost the degradation of dyes by plasma as well as in situ regenerate the exhausted GAC. The study offers a new opportunity for continuous effective remediation of wastewater contaminated with organic dyes using plasma technologies. | Rusen Zhou Renwu Zhou Xianhui Zhang Kateryna Bazaka Kostya (Ken) Ostrikov | 2019 | Frontiers of Chemical Science and Engineering2019，13，2： | 4 |
| 2 | Graphene Array-Based Anti-fouling Solar Vapour Gap Membrane Distillation with High Energy Efficiency显示文摘Photothermal membrane distillation(MD)is a promising technology for desalination and water purification.However,solar-thermal conversion suffers from low energy efficiency(a typical solar-water efficiency of ~50%),while complex modifications are needed to reduce membrane fouling.Here,we demonstrate a new concept of solar vapour gap membrane distillation(SVGMD)synergistically combining self-guided water transport,localized heating,and separation of membrane from feed solution.A free-standing,multifunctional light absorber based on graphene array is custom-designed to locally heat the thin water layer transporting through graphene nanochannels.The as-generated vapour passes through a gap and condenses,while salt/contaminants are rejected before reaching the membrane.The high solar-water efficiency(73.4% at 1 sun),clean water collection ratio(82.3%),excellent anti-fouling performance,and stable permeate flux in continuous operation over 72 h are simultaneously achieved.Meanwhile,SVGMD inherits the advantage of MD in microorganism removal and water collection,enabling the solar-water efficiency 3.5 times higher compared to state-of-the-art solar vapour systems.A scaled system to treat oil/seawater mixtures under natural sunlight is developed with a purified water yield of 92.8 kg m-2 day-1.Our results can be applied for diverse mixed-phase feeds,leading to the next-generation solar-driven MD technology. | Biyao Gong Huachao Yang Shenghao Wu Guoping Xiong Jianhua Yan Kefa Cen Zheng Bo Kostya Ostrikov | 2019 | Nano-Micro Letters2019，11，3： | 3 |
| 3 | Design of Supercapacitor Electrodes Using Molecular Dynamics Simulations显示文摘Electric double-layer capacitors(EDLCs) are advanced electrochemical devices for energy storage and have attracted strong interest due to their outstanding properties. Rational optimization of electrode–electrolyte interactions is of vital importance to enhance device performance for practical applications. Molecular dynamics(MD) simulations could provide theoretical guidelines for the optimal design of electrodes and the improvement of capacitive performances, e.g., energy density and power density. Here we discuss recent MD simulation studies on energy storage performance of electrode materials containing porous to nanostructures. The energy storage properties are related to the electrode structures, including electrode geometry and electrode modifications. Altering electrode geometry, i.e., pore size and surface topography,can influence EDL capacitance. We critically examine different types of electrode modifications, such as altering the arrangement of carbon atoms, doping heteroatoms and defects, which can change the quantum capacitance. The enhancement of power density can be achieved by the intensified ion dynamics and shortened ion pathway.Rational control of the electrode morphology helps improve the ion dynamics by decreasing the ion diffusion pathway. Tuning the surface properties(e.g., the affinity between the electrode and the ions) can affect the ionpacking phenomena. Our critical analysis helps enhance the energy and power densities of EDLCs by modulating the corresponding electrode structures and surface properties. | Zheng Bo Changwen Li Huachao Yang Kostya Ostrikov Jianhua Yan Kefa Cen | 2018 | Nano-Micro Letters2018，10，2： | 2 |
| 4 | Plasma-electrified up-carbonization for low-carbon clean energy显示文摘Low-value,renewable,carbon-rich resources,with different biomass feedstocks and their derivatives as typical examples,represent virtually inexhaustive carbon sources and carbon-related energy on Earth.Upon conversion to higher-value forms(referred to as“up-carbonization”here),these abundant feedstocks provide viable opportunities for energy-rich fuels and sustainable platform chemicals production.However,many of the current methods for such up-carbonization still lack sufficient energy,cost,and material efficiency,which affect their economics and carbon-emissions footprint.With external electricity precisely delivered,discharge plasmas enable many stubborn reactions to occur under mild conditions,by creating locally intensified and highly reactive environments.This technology emerges as a novel,versatile technology platform for integrated or stand-alone conversion of carbon-rich resources.The plasma-based processes are compatible for integration with increasingly abundant and cost-effective renewable electricity,making the whole conversion carbon-neutral and further paving the plasma-electrified upcarbonization to be performance-,environment-,and economics-viable.Despite the chief interest in this emerging area,no review article brings together the state-of-the-art results from diverse disciplines and underlies basic mechanisms and chemistry underpinned.As such,this review aims to fill this gap and provide basic guidelines for future research and transformation,by providing an overview of the application of plasma techniques for carbon-rich resource conversion,with particular focus on the perspective of discharge plasmas,the fundamentals of why plasmas are particularly suited for upcarbonization,and featured examples of plasma-enabled resource valorization.With parallels drawn and specificity highlighted,we also discuss the technique shortcomings,current challenges,and research needs for future work. | Rusen Zhou Yadong Zhao Renwu Zhou Tianqi Zhang Patrick Cullen Yao Zheng Liming Dai Kostya(Ken)Ostrikov | 2023 | Carbon Energy2023，5，1： | 2 |
| 5 | Conversion of Catalytically Inert 2D Bismuth Oxide Nanosheets for Effective Electrochemical Hydrogen Evolution Reaction Catalysis via Oxygen Vacancy Concentration Modulation显示文摘Oxygen vacancies(Vo)in electrocatalysts are closely correlated with the hydrogen evo-lution reaction(HER)activity.The role of vacancy defects and the effect of their concentration,how-ever,yet remains unclear.Herein,Bi2O3,an unfavorable electrocata-lyst for the HER due to a less than ideal hydrogen adsorption Gibbs free energy(ΔGH*),is utilized as a perfect model to explore the func-tion of Vo on HER performance.Through a facile plasma irradia-tion strategy,Bi2O3 nanosheets with different Vo concentrations are fabricated to evaluate the influence of defects on the HER process.Unexpectedly,while the generated oxygen vacancies contribute to the enhanced HER performance,higher Vo concentrations beyond a saturation value result in a significant drop in HER activity.By tunning the Vo concentration in the Bi_(2)O_(3)nanosheets via adjusting the treatment time,the Bi2O3 catalyst with an optimized oxygen vacancy concentration and detectable charge carrier concentration of 1.52×10^(24)cm^(−3)demonstrates enhanced HER performance with an overpotential of 174.2 mV to reach 10 mA cm^(−2),a Tafel slope of 80 mV dec−1,and an exchange current density of 316 mA cm−2 in an alkaline solution,which approaches the top-tier activity among Bi-based HER electrocatalysts.Density-functional theory calculations confirm the preferred adsorption of H*onto Bi2O3 as a function of oxygen chemical potential(ΔμO)and oxygen partial potential(PO2)and reveal that high Vo concentrations result in excessive stability of adsorbed hydrogen and hence the inferior HER activity.This study reveals the oxygen vacancy concentration-HER catalytic activity relationship and provides insights into activating catalytically inert materials into highly efficient electrocatalysts. | Ziyang Wu Ting Liao Sen Wang Janith Adikaram Mudiyanselage Aaron SMicallef Wei Li Anthony PO’Mullane Jianping Yang Wei Luo Kostya Ostrikov Yuantong Gu Ziqi Sun | 2022 | Nano-Micro Letters2022，14，6： | 2 |
| 6 | Sustainable Ammonia Synthesis from Nitrogen and Water by One-Step Plasma Catalysis显示文摘Sustainable ammonia synthesis at ambient conditions that relies on renewable sources of energy and feedstocks is globally sought to replace the Haber-Bosch process.Here,using nitrogen and water as raw materials,a nonthermal plasma catalysis approach is demonstrated as an effective powerto-chemicals conversion strategy for ammonia production.By sustaining a highly reactive environment,successful plasma-catalytic production of NH_(3) was achieved from the dissociation of N_(2) and H_(2)O under mild conditions.Plasma-induced vibrational excitation is found to decrease the N_(2) and H_(2)O dissociation barriers,with the presence of matched catalysts in the nonthermal plasma discharge reactor contributing significantly to molecular dissociation on the catalyst surface.Density functional theory calculations for the activation energy barrier for the dissociation suggest that ruthenium catalysts supported on magnesium oxide exhibit superior performance over other catalysts in NH_(3) production by lowering the activation energy for the dissociative adsorption of N_(2) down to 1.07 eV.The highest production rate,2.67 mmol gcat.^(-1) h^(-1),was obtained using ruthenium catalyst supported on magnesium oxide.This work highlights the potential of nonthermal plasma catalysis for the activation of renewable sources to serve as a new platform for sustainable ammonia production. | Tianqi Zhang Renwu Zhou Shuai Zhang Rusen Zhou Jia Ding Fengwang Li Jungmi Hong Liguang Dou Tao Shao Anthony B.Murphy Kostya(Ken)Ostrikov Patrick J.Cullen | 2023 | Energy & Environmental Materials2023，6，2： | 1 |
| 7 | Recent advances towards aqueous hydrogen peroxide formation in a direct current plasma-liquid system显示文摘The aqueous phase hydrogen peroxide(H_(2)O_(2aq))produced from the plasma-liquid interactions can directly or synergistically(with other substances)affect the liquid chemistry,and therefore it is important to unfold the H_(2)O_(2aq)formation mechanism.However,up to now,a consensus on the H_(2)O_(2aq)formation mechanism is not reached.This review aims to survey the recent advances on the understanding of the H_(2)O_(2aq)formation mechanism in the system of a direct current discharge plasma operated over a liquid electrode.Theoretical and experimental analyses indicate that the recombination of dissolved OH radicals(OHaq)is the dominant process for the H_(2)O_(2aq)formation,while the purported plasma-induced photolysis of water and the dissolution of gaseous H_(2)O_(2)are ruled out. | Qiang Chen Junshuai Li Qiang Chen Kostya(Ken)Ostrikov | 2022 | High Voltage2022，7，3： | 1 |
| 8 | Plasma-enabled sensing of urea and related amides on polyaniline显示文摘气压血浆喷气(APPJ ) 被用来从酰胺为器官的蒸汽的察觉提高工业上重要的 polyaniline (PANI ) 的敏感。PANI 的煤气的察觉到机制正在操作可逆 protonation 或 deprotonation 的基础,而在血浆修正以后改进敏感的驱动力是未知的。此处,我们设法解决这个问题并且调查察觉到大气的血浆的机制用脲为酰胺的蒸汽察觉把 PANI 当作了一个模型。从各种各样的分析技术的结果显示为在血浆处理以后的改进敏感负责的嘴巧的机制通过在血浆处理和脲介绍的功能的组之间形成的一个周期的转变状态正在操作。这个转变状态与非对待的 PANI 相比由 2.4 次的一个因素向脲的 15 ppm 改进了 PANI 的敏感。对待的 PANI 为察觉到象改进材料处理并且控制食物质量那样的应用的气体向有毒的其它和 carcinogenic 酰胺 analytes 为敏感和选择的改进正在答应的这血浆。 | Harinarayanan Puliyalil Petr Slobodian Michal Sedlacik Ruhan Benlikaya Pavel Riha Kostya (Ken) Ostrikov Uros Cvelbar | 2016 | Frontiers of Chemical Science and Engineering2016，10，2： | 1 |
| 9 | Surface diffuse discharge mechanism of well-aligned atmospheric pressure microplasma arrays显示文摘A stable and homogeneous well-aligned air microplasma device for application at atmospheric pressure is designed and its electrical and optical characteristics are investigated. Current-voltage measurements and intensified charge coupled device(ICCD) images show that the well-aligned air microplasma device is able to generate a large-area and homogeneous discharge at the applied voltages ranging from 12 kV to 14 kV, with a repetition frequency of 5kHz, which is attributed to the diffusion effect of plasma on dielectric surface. Moreover, this well-aligned microplasma device may result in the uniform and large-area surface modification of heat-sensitive PET polymers without damage, such as optimization in hydrophobicity and biocompatibility. In the biomedical field, the utility of this well-aligned microplasma device is further testified. It proves to be very efficient for the large-area and uniform inactivation of E. coli cells with a density of 103/cm^2 on LB agar plate culture medium, and inactivation efficiency can reach up to 99% for 2-min treatment. | 周仁武 周儒森 庄金星 李江炜 陈茂冬 张先徽 刘东平 Kostya (Ken) Ostrikov 杨思泽 | 2016 | Chinese Physics B2016，25，4： | 1 |
| 10 | Interface-engineered MoS_(2)/CoS/NF bifunctional catalysts for highly-efficient water electrolysis显示文摘The utilization of non-noble metal catalysts with robust and highly efficient electrocatalytic activity for hydrogen evolution reaction(HER)and oxygen evolution reaction(OER)are extremely important for the large-scale implementation of renewable energy devices.Integration of bifunctional electrocatalysts on both anode and cathode electrodes remains a significant challenge.Herein,we report on a novel and facile strategy to construct the ordered and aligned MoS_(2)nanosheet-encapsulated metal–organic frameworks(MOFs)derived hollow CoS polyhedron,in-situ grown on a nickel foam(NF).The starfish-like MoS_(2)/CoS/NF heterojunctions were formed due to the ordered growth of the material caused by NF substrate.The optimized 2-MoS_(2)/CoS/NF heterojunction exhibits robust bifunctional electrocatalytic activity with a low overpotential of 67 and 207 m V toward the HER and OER at 10 mA cm^(-2),and the long-term stability,which exceeds most of the reported bifunctional electrocatalysts.Such high electrocatalytic performance arises due to the synergistic effect between the MoS_(2)and CoS phases across the interface,the abundant active sites,as well as the hierarchical pore framework,which collectively enhance the mass and electron transfer during the reactions.The work provides a promising approach to fabricating bifunctional catalysts with custom-designed heterojunctions and remarkable performance for applications in electrochemical energy devices and related areas. | Wenxia Chen Xingwang Zhu Rui Wang Wei Wei Meng Liu Shuai Dong Kostya Ken Ostrikov Shuang-Quan Zang | 2022 | Journal of Energy Chemistry2022，，12： | 1 |
| 11 | Bimetallic Oxyhydroxide as a High-Performance Water Oxidation Electrocatalyst under Industry-Relevant Conditions显示文摘Developing high-performing oxygen evolution reaction(OER)electrocatalysts under high-current operation conditions is critical for future commercial applications of alkaline water electrolysis for clean energy generation.Herein,we prepared a three-dimensional(3D)bimetallic oxyhydroxide hybrid grown on a Ni foam(NiFeOOH/NF)prepared by immersing Ni foam(NF)into Fe(NO_(3))_(3) solution.In this unique 3D structure,the NiFeOOH/NF hybrid was composed of crystalline Ni(OH)_(2) and amorphous FeOOH evenly grown on the NF surface.As a bimetallic oxyhydroxide electrocatalyst,the NiFeOOH/NF hybrid exhibited excellent catalytic activity,surpassing not only the other reported Ni–Fe based electrocatalysts,but also the commercial Ir/C catalyst.In situ electrochemical Raman spectroscopy demonstrated the active FeOOH and NiOOH phases involved in the OER process.Profiting from the synergy of Fe and Ni catalytic sites,the NiFeOOH/NF hybrid delivered an outstanding OER performance under challenging industrial conditions in a 10.0 mol·L^(-1) KOH electrolyte at 80℃,requiring potentials as small as 1.47 and 1.51 V to achieve the super-high catalytic current densities of 100 and 500mA∙cm^(-2),respectively. | Jiaxin Yuan Xiaodi Cheng Chaojun Lei Bin Yang Zhongjian Li Kun Luo K.H.Koko Lam Lecheng Lei Yang Hou Kostya Ken Ostrikov | 2021 | Engineering2021，7，9： | 1 |
| 12 | Translational plasma stomatology:applications of cold atmospheric plasmas in dentistry and their extension显示文摘In recent years,translational plasma medicine(TPM),as a novel application area of plasmas,has attracted much attention of experts from both academic and clinical fields.State-of-the-art of the lab-scale research and clinical trials of the cold atmospheric plasmas(CAPs)in the stomatology are reviewed in detail from the direct and indirect applications of the CAPs.Based on the discussions concerning the relationship between the plasma stomatology and the plasma medicine,it is indicated that it would be an important reference for promoting the TPM starting from the fundamental and application studies in the field of dentistry,which is also one of the most three promising application fields of plasma medicine. | He-Ping Li Xiao-Fei Zhang Xiao-Ming Zhu Miao Zheng Shu-Fang Liu Xuan Qi Kai-Peng Wang Jian Chen Xiao-Qing Xi Jian-Guo Tan Kostya(Ken)Ostrikov | 2017 | High Voltage2017，2，3： | 1 |
| 13 | Nanocarbon-Enhanced 2D Photoelectrodes:A New Paradigm in Photoelectrochemical Water Splitting显示文摘Solar-driven photoelectrochemical(PEC)water splitting systems are highly promising for converting solar energy into clean and sustainable chemical energy.In such PEC systems,an integrated photoelectrode incorporates a light harvester for absorbing solar energy,an interlayer for transporting photogenerated charge carriers,and a co-catalyst for triggering redox reactions.Thus,understanding the correlations between the intrinsic structural properties and functions of the photoelectrodes is crucial.Here we critically examine various 2D layered photoanodes/photocathodes,including graphitic carbon nitrides,transition metal dichalcogenides,layered double hydroxides,layered bismuth oxyhalide nanosheets,and MXenes,combined with advanced nanocarbons(carbon dots,carbon nanotubes,graphene,and graphdiyne)as co-catalysts to assemble integrated photoelectrodes for oxygen evolution/hydrogen evolution reactions.The fundamental principles of PEC water splitting and physicochemical properties of photoelectrodes and the associated catalytic reactions are analyzed.Elaborate strategies for the assembly of 2D photoelectrodes with nanocarbons to enhance the PEC performances are introduced.The mechanisms of interplay of 2D photoelectrodes and nanocarbon co-catalysts are further discussed.The challenges and opportunities in the field are identified to guide future research for maximizing the conversion efficiency of PEC water splitting. | Jun Ke Fan He Hui Wu Siliu Lyu Jie Liu Bin Yang Zhongjian Li Qinghua Zhang Jian Chen Lecheng Lei Yang Hou Kostya Ostrikov | 2021 | Nano-Micro Letters2021，13，2： | 1 |
| 14 | Non-thermal plasma enhances performances of biochar in wastewater treatment and energy storage applications显示文摘Surface functionalization or modification to introduce more oxygen-containing functional groups to biochar is an effective strategy for tuning the physicochemical properties and promoting follow-up applications.In this study,non-thermal plasma was applied for biochar surface carving before being used in contaminant removal and energy storage applications.The results showed that even a low dose of plasma exposure could introduce a high number density of oxygen-functional groups and enhance the hydrophilicity and metal affinity of the pristine biochar.The plasma-treated biochar enabled a faster metal-adsorption rate and a 40%higher maximum adsorption capacity of heavy metal ion Pb^(2+).Moreover,to add more functionality to biochar surface,biochar with and without plasma pre-treatment was activated by KOH at a temperature of 800℃.Using the same amount of KOH,the plasma treatment resulted in an activated carbon product with the larger BET surface area and pore volume.The performance of the treated activated carbon as a supercapacitor electrode was also substantially improved by>30%.This study may provide guidelines for enhancing the surface functionality and application performances of biochar using non-thermal-based techniques. | Rusen Zhou Xiaoxiang Wang Renwu Zhou Janith Weerasinghe Tianqi Zhang Yanbin Xin Hao Wang Patrick Cullen Hongxia Wang Kostya(Ken)Ostrikov | 2022 | Frontiers of Chemical Science and Engineering2022，16，4： | 0 |
| 15 | A simple derivative spectrophotometric method for simultaneously detecting nitrate and nitrite in plasma treated water显示文摘A spectrophotometric technique is developed to simultaneously quantify nitrate and nitrite in plasma treated water.The measurement is based on examining the inflection points(wavelengths)in the derivative absorbance of the nitrate or nitrite solution.At the inflection points of the pure nitrate solution,the derivative absorbance is zero and independent of the nitrate’s concentration,and thus the nitrite’s concentration in a mixed nitrate and nitrite solution can be obtained by using the Beer’s law at these points.The nitrate’s concentration can also be achieved from the inflection points of nitrite in the same manner.The relation between the tested substance’s(nitrate or nitrite)concentration and the second-or the third-order absorbances is obtained at these inflection points.Test measurements for mixed aqueous solutions of nitrate and nitrite with or without hydrogen peroxide confirm the reliability of this technique.We applied this technique to quantify the nitrate and nitrite generated in air plasma treated aqueous solutions.The results indicate that both nitrate and nitrite concentrations increase with the plasma treatment time,and the nitrite species is found to be generated prior to the nitrate species in the air plasma treated aqueous solution.Moreover,the production rate of total nitrogen species is independent of the solutions’p H value.These results are relevant to diverse applications of plasma activated solutions in materials processing,biotechnology,medicine and other fields. | 许良胜 吴汇鸿 王新 陈强 Kostya(Ken)OSTRIKOV | 2022 | Plasma Science and Technology2022，24，8： | 0 |
| 16 | Customizing the microenvironment of CO_(2) electrocatalysis via three‐phase interface engineering显示文摘Converting CO_(2) into high‐value fuels and chemicals by renewable‐electricitypowered electrochemical CO_(2) reduction reaction(CRR)is a viable approach toward carbon‐emissions‐neutral processes.Unlike the thermocatalytic hydrogenation of CO_(2) at the solid‐gas interface,the CRR takes place at the three‐phase gas/solid/liquid interface near the electrode surface in aqueous solution,which leads to major challenges including the limited mass diffusion of CO_(2) reactant,competitive hydrogen evolution reaction,and poor product selectivity.Here we critically examine the various methods of surface and interface engineering of the electrocatalysts to optimize the microenvironment for CRR,which can address the above issues.The effective modification strategies for the gas transport,electrolyte composition,controlling intermediate states,and catalyst engineering are discussed.The key emphasis is made on the diverse atomic‐precision modifications to increase the local CO_(2) concentration,lower the energy barriers for CO_(2) activation,decrease the H2O coverage,and stabilize intermediates to effectively control the catalytic activity and selectivity.The perspectives on the challenges and outlook for the future applications of three‐phase interface engineering for CRR and other gasinvolving electrocatalytic reactions conclude the article. | Xianlong Zhou Hao Liu Bao Yu Xia Kostya(Ken)Ostrikov Yao Zheng Shi‐Zhang Qiao | 2022 | SmartMat2022，3，1： | 0 |
| 17 | Flower-like Cu5Sn2S7/ZnS nanocomposite for high performance supercapacitor显示文摘Ternary nanocomposites of CuxZnySnzS(x+y+z)are considered as an emerging potential candidate as electrode materials for energy storage devices due to the considerable interlayer spaces and tunnels in its crystal structures with excellent conducting ability.Recently,this nanocomposite used as anode material for Li-ion battery has been reported,but there is lim让ed research on让s application in supercapacitors which is considered a complementary energy storage device to battery.In this work,flower-like Cu5Sn2S7/ZnS and pristine Cu5Sn2S7 nanocomposite were prepared via a facile hydrothermal method.The electrochemical tests showed that the Cu5Sn2S7/ZnS nanocomposite exhibited better performance than pristine Cu5Zn2S7,suggesting that the existence of ZnS could significantly enhance the electrochemical performance of Cu5Sn2S7,with the good capacitance of 200 F/g at the current density of 1 A/g.Furthermore 170 F/g was obtained at the large current density of 10 A/g.Supercapacitors demonstrated energy density of 11.08 Wh/kg with power density 461 W/kg or 9.67 Wh/kg at power density of 4615 W/kg. | Feng Yu Vincent Tiing Tiong Le Pang Rusen Zhou Xiaoxiang Wang Eric R.Waclawik Kostya (Ken) Ostrikov Hongxia Wang | 2019 | Chinese Chemical Letters2019，30，5： | 0 |
| 18 | Investigation on Bioactivity of Titanium DioXide Thin Films Fabricated by Electron Cyclotron Resonance Plasma Aided Pulsed Laser Deposition显示文摘Titanium dioxide thin films with a rutile crystallinite size around 20 nm were fabri-cated by pulsed laser deposition (PLD) aided with an electron cyclotron resonance (ECR) plasma.With annealing treatment, the crystal size of the rutile crystallinite increased to 100 nm. Theapatite-forming ability of the films as deposited and after annealing was investigated in a kindof simulated body fluid with ion concentrations nearly equal to those of human blood plasma.The results indicate that ECR aided PLD is an effective way both to fabricate bioactive titaniumdioxide thin films and to optimize the bioactivity of titanium dioxide, with both crystal size anddefects of the film taken into account. | 束奇伟 钟晓霞 吴嘉达 孙剑 Kostya(Ken) OSTRIKOV | 2009 | Plasma Science and Technology2009，11，4： | 0 |
| 19 | Liquid discharge plasma for fast biomass liquefaction at mild conditions: The effects of homogeneous catalysts显示文摘Non-thermal plasma exhibits unique advan-tages in biomass conversion for the sustainable production of higher-value energy carriers.Different homogeneous catalysts are usually required for plasma-enabled biomass liquefaction to achieve time-and energy-efficient conver-sions.However,the effects of such catalysts on the plasma-assisted liquefaction process and of the plasma on those catalysts have not been thoroughly studied.In this study,an electrical discharge plasma is employed to promote the direct liquefaction of sawdust in a mixture of polyethylene glycol 200 and glycerol.Three commonly used chemicals,sulfuric acid,nitric acid and sodium p-toluene sulfate,were selected as catalysts.The effects of the type of catalyst and concentration on the liquefaction yield were examined;further,the roles of the catalysts in the plasma liquefaction process have been discussed.The results showed that the liquefaction yield attains a value of 90%within 5 min when 1%sulfuric acid was employed as the catalyst.Compared with the other catalysts,sulfuric acid presents the highest efficiency for the liquefaction of sawdust.It was observed that hydrogen ions from the catalyst were primarily responsible for the significant thermal effects on the liquefaction system and the generation of large quantities of active species;these effects directly con-tributed to a higher efficacy of the plasma-enabled liquefaction process. | Sen Wang Shiyun Liu Danhua Mei Rusen Zhou Congcong Jiang Xianhui Zhang Zhi Fang Kostya(Ken)Ostrikov | 2020 | Frontiers of Chemical Science and Engineering2020，14，5： | 0 |
| 20 | Application of an atmospheric pressure plasma jet in a rat model of ischaemic stroke:Design,optimisation,and characteristics显示文摘Recent studies have shown the in vitro neuro-protective functions of atmospheric pressure plasma(APP)against multiple pathological injuries during ischaemic stroke(IS).However,whether APP treatment exerts a therapeutic effect on a rat IS model remains unclear.Here,on the basis of needle-to-ring dielectric barrier discharge,an atmospheric pressure plasma jet(APPJ)was designed,with the Helium as the working gas which was driven by a sinusoidal voltage.Then,the treatment conditions were optimised for IS rat model treatment and the characteristics of this APPJ were further diagnosed.Subsequently,the rat IS model was established through 90 min middle cerebral artery occlusion(MCAO),and plasma was intermittently inhaled by rats via the nasal cavity for a 2 min period at 60 min of MCAO process.The therapeutic effects of this plasma jet device were then evaluated using biomedical analyses.According to our results,intermittent APP inhalation in the MCAO rats increased the serum NO content,improved the neurological function,enhanced regional cerebral blood flow,lowered brain infarction,and reduced the cell apoptosis in brain tissues of MCAO rats.Collectively,our data provides a novel potential strategy for IS treatment by using atmospheric-pressure plasma inhalation. | Ye Chen Bingyan Yang Yuqing Liu Lixin Xu Zhongfang Shi Yixiao Liu Ruoyu Han Fang Yuan Jiting Ouyang Xu Yan Kostya(Ken)Ostrikov | 2023 | High Voltage2023，8，2： | 0 |
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