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| 1 | Chemical characteristics of PM_(2.5) during haze episodes in the urban of Fuzhou,China显示文摘Atmospheric fine particles(PM_(2.5)) were collected in this study with middle volume samplers in Fuzhou,China,during both normal days and haze days in summer(September 2007) and winter(January 2008).The concentrations,distributions,and sources of polycyclic aromatic hydrocarbons(PAHs),organic carbon(OC),elemental carbon(EC),and water soluble inorganic ions(WSIIs) were determinated.The results showed that the concentrations of PM2.5,PAHs,OC,EC,and WSIIs were in the orders of haze > normal and winter > summer.The dominant PAHs of PM2.5 in Fuzhou were Fluo,Pyr,Chr,BbF,BkF,BaP,BghiP,and IcdP,which represented about 80.0%of the total PAHs during different sampling periods.The BaPeq concentrations of ∑PAHs were 0.78,0.99,1.22,and 2.43 ng/m3 in summer normal,summer haze,winter normal,and winter haze,respectively.Secondary pollutants(SO_4^(2-),NO_3^-,NH_4^+.and OC) were the major chemical compositions of PM2.5,accounting for 69.0%,55.1%,63.4%,and 64.9%of PM2.5 mass in summer normal,summer haze,winter normal,and winter haze,respectively.Correspondingly,secondary organic carbon(SOC) in Fuzhou accounted for 20.1%,48.6%,24.5%,and 50.5%of OC.The average values of nitrogen oxidation ratio(NOR) and sulfur oxidation ratio(SOR) were higher in haze days(0.08 and 0.27) than in normal days(0.05 and 0.22).Higher OC/EC ratios were also found in haze days(5.0) than in normal days(3.3).Correlation analysis demonstrated that visibility had positive correlations with wind speed,and negative correlations with relative humidity and major air pollutants.Overall,the enrichments of PM_(2.5),OC,EC,SO_4^(2-),and NO_3^- promoted haze formation.Furthermore,the diagnostic ratios of IcdP/(IcdP + BghiP),IcdP/BghiP,OC/EC,and NO_3^-/SO_4^(2-) indicated that vehicle exhaust and coal consumption were the main sources of pollutants in Fuzhou. | Fuwang Zhang Lingling Xu Jinsheng Chen Xiaoqiu Chen Zhenchuan Niu Tong Lei Chunming Li Jinping Zhao | 2013 | Particuology2013，11，3： | 19 |
| 2 | Modulating macrophage activities to promote endogenous bone regeneration: Biological mechanisms and engineering approaches显示文摘A coordinated interaction between osteogenesis and osteoimmune microenvironment is essential for successful bone healing.In particular,macrophages play a central regulatory role in all stages of bone repair.Depending on the signals they sense,these highly plastic cells can mediate the host immune response against the exterior signals of molecular stimuli and implanted scaffolds,to exert regenerative potency to a varying extent.In this article,we first encapsulate the immunomodulatory functions of macrophages during bone regeneration into three aspects,as sweeper,mediator and instructor.We introduce the phagocytic role of macrophages in different bone healing periods(‘sweeper’)and overview a variety of paracrine cytokines released by macrophages either mediating cell mobilisation,vascularisation and matrix remodelling(‘mediator’),or directly driving the osteogenic differentiation of bone progenitors and bone repair(‘instructor’).Then,we systematically classify and discuss the emerging engineering strategies to recruit,activate and modulate the phenotype transition of macrophages,to exploit the power of endogenous macrophages to enhance the performance of engineered bone tissue. | Yiming Niu Zhenzhen Wang Yuchen Shi Lei Dong Chunming Wang | 2021 | Bioactive Materials2021，6，1： | 14 |
| 3 | Mechanism of vertical crack formation in Yb_(2)SiO_(5) coatings deposited via plasma spray-physical vapor deposition显示文摘Plasma spray-physical vapor deposition(i.e.,PS-PVD)is a promising method for obtaining advanced environmental barrier coatings(EBCs).The EBCs must meet some requirements in the application,in which the thermal cycle performance affects the service lifetime.The preparation of artificial vertical cracks in Yb_(2)SiO_(5) coatings is an effective approach for meeting the requirements above because vertical cracks provide a strain tolerance.To clarify the formation mechanism of vertical cracks during the PSPVD,the effects of coating thickness and substrate temperature on the formation of vertical cracks were investigated.In addition,the interactions of spray powder and plasma flame during coating deposition were also characterized by optical spectroscopy.It is indicated that vertical cracks are formed due to a thermal expansion mismatch between Yb_(2)SiO_(5) and mullite coating,transient cooling after deposition and the nucleation of evaporated Yb_(2)SiO_(5) as well. | Xiaofeng Zhang Chao Wang Ruijun Ye Chunming Deng Xinghua Liang Ziqian Deng Shaopeng Niu Jinbing Song Guo Liu Min Liu Kesong Zhou Jian Lu Junli Feng | 2020 | Journal of Materiomics2020，6，1： | 6 |
| 4 | High power electrochemical capacitors based on carbon nanotube electrodes显示文摘 | Chunming Niu Enid K Sichel Robert Hoch | | 0，，11： | 1 |
| 5 | Porous Co_(2)VO_(4) Nanodisk as a High-Energy and Fast-Charging Anode for Lithium-Ion Batteries显示文摘High-energy–density lithium-ion batteries(LIBs)that can be safely fast-charged are desirable for electric vehicles.However,sub-optimal lithiation potential and low capacity of commonly used LIBs anode cause safety issues and low energy density.Here we hypothesize that a cobalt vanadate oxide,Co_(2)VO_(4),can be attractive anode material for fast-charging LIBs due to its high capacity(~1000 mAh g^(−1))and safe lithiation potential(~0.65 V vs.Li^(+)/Li).The Li+diffusion coefficient of Co2VO4 is evaluated by theoretical calculation to be as high as 3.15×10^(-10) cm^(2) s^(−1),proving Co_(2)VO_(4) a promising anode in fast-charging LIBs.A hexagonal porous Co2VO4 nanodisk(PCVO ND)structure is designed accordingly,featuring a high specific surface area of 74.57 m^(2) g^(−1) and numerous pores with a pore size of 14 nm.This unique structure succeeds in enhancing Li^(+) and electron transfer,leading to superior fast-charging performance than current commercial anodes.As a result,the PCVO ND shows a high initial reversible capacity of 911.0 mAh g^(−1) at 0.4 C,excellent fast-charging capacity(344.3 mAh g^(−1) at 10 C for 1000 cycles),outstanding long-term cycling stability(only 0.024% capacity loss per cycle at 10 C for 1000 cycles),confirming the commercial feasibility of PCVO ND in fast-charging LIBs. | Jinghui Ren Zhenyu Wang Peng Xu Cong Wang Fei Gao Decheng Zhao Shupei Liu Han Yang Di Wang Chunming Niu Yusong Zhu Yutong Wu Xiang Liu Zhoulu Wang Yi Zhang | 2022 | Nano-Micro Letters2022，14，1： | 1 |
| 6 | Grafting of norbornene diacid anhydride onto fluoroelastomer显示文摘 | Chen Chunming Niu Yongsheng | 2005 | Rubber Chemistry and Technology2005，78，4： | 1 |
| 7 | The lithium and sodium storage performances of phosphorus and its hierarchical structure显示文摘Recent preparation of black phosphorene and subsequent discovery of its excellent optical and electronic properties have attracted great attenti on,and ren ewed interest to phosphorus.Rece nt researches have indicated that phosphorus structures are promisi ng an odes for lithium-ion and sodium-ion batteries.A high theoretical capacity of 2,596 mAh·g^-1 was predicted for phosphorus according to the reaction of 3Li/Na+P→Li3P/Na3P.However,fast capacity degradation is accompanying with most phosphorus structures due to the low electronic conductivity and structural pulverization induced by large volume change in charging and discharging proceses.The electrochemical performances are significantly affected by the hierarchical structural design of phosphorus.A few reviews of phosphorus structures have been reported recent?However,no review about the electrochemical performances of phosphorus structures according to their hierarchical structures has been reported.First of all,phosphrus allotropes along with their structure and fundamental properties are briefly reviewed in this work.Secondly,the studies on lithiation/sodiation mechanism of red/black phosphorus are presented.Thirdly,a summary about the electrochemical performances of red/black phosphorus composites with different hierarchical structures is presented.Furthermore,the,development challenges and future perspectives of phosphorus structures as anodes for LIBs and SIBs are discussed. | Dan Zhao Lihui Zhang Chengcheng Fu Jinying Zhang Chunming Niu | 2019 | Nano Research2019，12，1： | 1 |
| 8 | Rock-salt and helix structures of silver iodides under ambient conditions显示文摘Many different phase structures have been discovered for silver iodides. The β and γ phases were found to be the most common ones at ambient conditions, while the rock-salt phase was found to be stable under pressures between 400 MPa and 11.3 GPa. Recently, the α phase was demonstrated to be stable under ambient conditions when the particle sizes were reduced to below 10 nm. However, no other phase has been reported to be stable for silver iodides under ambient conditions. Rock-salt and helix structures have been found to be stable under ambient conditions in this study. The structures have been characterized by elemental mapping, Raman scattering, and high-resolution transmission electron microscopy. The stabilities of these structures were also confirmed by molecular dynamics and density functional theory. | Hongyang Huang Jinying Zhang Yifan Zhang Chengcheng Fu Jialiang Huang Yonghong Cheng Chunming Niu Xinluo Zhao Hisanori Shinohara | 2019 | National Science Review2019，6，4： | 1 |
| 9 | Recent progress of quantum dots for energy storage applications显示文摘The environmental problems of global warming and fossil fuel depletion are increasingly severe,and the demand for energy conversion and storage is increasing.Ecological issues such as global warming and fossil fuel depletion are increasingly stringent,increasing energy conversion and storage needs.The rapid development of clean energy,such as solar energy,wind energy and hydrogen energy,is expected to be the key to solve the energy problem.Several excellent literature works have highlighted quantum dots in supercapacitors,lithium-sulfur batteries,and photocatalytic hydrogen production.Here,we outline the latest achievements of quantum dots and their composites materials in those energy storage applications.Moreover,we rationally analyze the shortcomings of quantum dots in energy storage and conversion,and predict the future development trend,challenges,and opportunities of quantum dots research. | Quan Xu Yingchun Niu Jiapeng Li Ziji Yang Jiajia Gao Lan Ding Huiqin Ni Peide Zhu Yinping Liu Yaoyao Tang Zhong-Peng Lv Bo Peng Travis Shihao Hu Hongjun Zhou Chunming Xu | 2022 | Carbon Neutrality2022，1，1： | 1 |
| 10 | High Power Electrochemical Capacitors Based on Carbon Nanotube Electrodes 显示文摘 | Niu Chunming Hoch Robert | 1997 | Applied Physics Letters1997，70，11： | 1 |
| 11 | High power electrochemical capacitors based on carbon nanotube electrodes显示文摘 | Niu Chunming Sichel Enid K Hoch Robert | | 0，，： | 1 |
| 12 | Fabrication of highly effective electrodes for iron chromium redox flow battery显示文摘Iron-chromium redox flow batteries(ICRFBs)have emerged as promising energy storage devices due to their safety,environmental protection,and reliable performance.The carbon cloth(CC),often used in ICRFBs as the electrode,provides a suitable platform for electrochemical processes owing to its high surface area and interconnected porous structure.However,the CC electrodes have issues,such as,insufficient electron transfer performance,which limits their industrial application.Here,we employed silicic acid etching to carve dense nano-porous structures on the surface of CC electrodes based on the favorable design of ICRFBs and the fundamental principles of electrode polarization losses.As a result,we developed a multifunctional carbon cloth electrode with abundant vacancies,notably enhancing the performance of the battery.The fabricated electrode showcased a wealth of defect sites and superior electronic transport properties,offering an extensive and effective reaction area for rapidly flowing electrolytes.With an electrode compression ratio of 40%and the highest current density in ICRFBs so far(140 mA·cm^(-2)),the battery achieved the average energy efficiency of 81.3%,11.24%enhancement over the previously published work.Furthermore,throughout 100 charge-discharge cycles,the average energy efficiency degradation was negligible(~0.04%),which has the potential to become the most promising candidate for large-scale and long-term electrochemical energy storage applications. | Yingchun Niu Chao Guo Yinping Liu Guangfu Wu Tianhang Zhou Fangang Qu Ziji Yang Ali Heydari Chunming Xu Quan Xu | 2024 | Nano Research2024，17，5： | 0 |
| 13 | Role of oxygen vacancy in rare-earth-free LiCa_(3)Mg(VO_(4))_(3) phosphor: Enhancing photoluminescence by heat-treatment in oxygen flow显示文摘As a kind of white light emitting diode(w-LED)with many advantages,rare-earth-free vanadate phosphor has attracted more and more attention.The oxygen vacancies and other surface defects in vanadate oxide have obvious effects on its structure and properties.In order to reveal the specific effects,we heat-treat the original LiCa_(3)Mg(VO_(4))_(3)(LCMV)in an oxygen flow with different time to decrease oxygen vacancies,and find that the lattice distortion of[VO_(4)]tetrahedron caused by oxygen vacancy is effectively reduced.Meanwhile,the crystallinity of the treated samples increases,the surface defects decreases,and the fluorescence intensity increases.The variation of photoluminescence quantum yield(PLQY)with oxygen treatment time is as follows:the enhancement effect firstly reaches the strongest(69.34%)within one hour,then begins to decline after two hours,and finally reaches the platform after three hours and remains basically unchanged.The reason for the enhancement of PLQY is the decrease of oxygen vacancy after one-hour treatment,and the reason for the decrease of PLQY after a further increased treatment time is that the absorption of oxygen and water in air caused by excessive surface defects introduced by oxygen treatment. | Yixuan Lv Yijun Zhang Le Shi Jian-Wen Shi Jun Li Zhihui Li Xin Ji Dandan Ma Yonghong Cheng Chunming Niu | 2021 | Journal of Materials Science & Technology2021，，20： | 0 |
| 14 | Progress of organic,inorganic redox flow battery and mechanism of electrode reaction显示文摘With the deployment of renewable energy and the increasing demand for power grid modernization,redox flow battery has attracted a lot of research interest in recent years.Among the available energy storage technologies,the redox flow battery is considered the most promising candidate battery due to its unlimited capacity,design flexibility,and safety.In this review,we summarize the latest progress and improvement strategies of common inorganic redox flow batteries,such as vanadium redox flow batteries,iron-chromium redox flow batteries,and zinc-based redox flow batteries,including electrolyte,membrane,electrode,structure design,etc.In addition,we introduce the latest progress in aqueous and non-aqueous organic redox flow batteries.We also focus on the modification mechanism,optimization design,improvement strategy,and modeling method of the redox flow battery reaction.Finally,this review presents a brief summary,challenges,and perspectives of the redox flow battery. | Yinping Liu Yingchun Niu Xiangcheng Ouyang Chao Guo Peiyu Han Ruichen Zhou Ali Heydari Yang Zhou Olli Ikkala Glazkov Artem Tigranovich Chunming Xu Quan Xu | 2023 | Nano Research Energy2023，2，4： | 0 |
| 15 | Synergistic effect of electrode defect regulation and Bi catalyst deposition on the performance of iron–chromium redox flow battery显示文摘Iron-chromium redox flow batteries (ICRFBs) possess advantages of high safety,long cycle time,and lowcost.Increasing Cr^(3+)/Cr^(2+)reaction activity is suggested as one of the most promising strategies to improve the performance and prolong the lifetime of ICRFBs.To improve the slow reaction kinetics of the negative electrode,a type of defected carbon cloth with Bismuth (Bi) catalyst introduction is prepared by defect engineering method and electrochemical deposition,which provided defect sites and active sites to catalyze the redox couple’s reaction of ICRFBs.Furthermore,this modified carbon cloth adsorbs Cr(Ⅲ)hydrate more easily,which has a more stable structure and can significantly improve the performance of ICRFBs.Both experimental analysis and theoretical calculation indicated that the modified electrode has excellent electrocatalytic ability,which can enhance the reaction rate of Cr^(3+)/Cr^(2+),improve capacity retention and stabilize cycling performance.The capacity degradation rate of an ICRFB single cell with the modified electrodes is just 0.23%per cycle at a current density of 140 m A/cm^(2).Additionally,the energy efficiency (EE) remains around 83%,which is 8.45%higher than that of the pristine electrode assembled battery under 60 cycles.This work supplies a simple method to obtain a high-performance electrode material for ICRFBs and makes it a practical solution to promote ICFRBs large-scale commercialization process. | Quan Xu Siyang Wang Chunming Xu Xinyi Chen Senwei Zeng Chuanyuan Li Yang Zhou Tianhang Zhou Yingchun Niu | 2023 | Chinese Chemical Letters2023，34，10： | 0 |
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