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1Biomass-Derived Porous Carbon-Based Nanostructures for Microwave Absorption显示文摘Currently,electromagnetic(EM) pollution poses severe complication toward the operation of electronic devices and biological systems.To this end,it is pertinent to develop novel microwave absorbers through compositional and structural design.Porous carbon(PC)materials demonstrate great potential in EM wave absorption due to their ultralow density,large surface area,and excellent dielectric loss ability.However,the large-scale production of PC materials through low-cost and simple synthetic route is a challenge.Deriving PC materials through biomass sources is a sustainable,ubiquitous,and low-cost method,which comes with many desired features,such as hierarchical texture,periodic pattern,and some unique nanoarchitecture.Using the bio-inspired microstructure to manufacture PC materials in mild condition is desirable.In this review,we summarize the EM wave absorption application of biomass-derived PC materials from optimizing structureand designing composition.The corresponding synthetic mechanisms and development prospects are discussed as well.The perspective in this field is given at the end of the article.Huanqin Zhao Yan Cheng Wei Liu Lieji Yang Baoshan Zhang Luyuan Paul Wang Guangbin Ji Zhichuan J.Xu 2019Nano-Micro Letters2019,11,2:12
2Heterostructured Electrocatalysts for Hydrogen Evolution Reaction Under Alkaline Conditions显示文摘The hydrogen evolution reaction(HER) is a half-cell reaction in water electrolysis for producing hydrogen gas. In industrial water electrolysis, the HER is often conducted in alkaline media to achieve higher stability of the electrode materials. However, the kinetics of the HER in alkaline medium is slow relative to that in acid because of the low concentration of protons in the former.Under the latter conditions, the entire HER process will require additional effort to obtain protons by water dissociation near or on the catalyst surface. Heterostructured catalysts, with fascinating synergistic effects derived from their heterogeneous interfaces, can provide multiple functional sites for the overall reaction process. At present, the activity of the most active known heterostructured catalysts surpasses(platinum-based heterostructures) or approaches (noble-metal-free heterostructures) that of the commercial Pt/C catalyst under alkaline conditions, demonstrating an infusive potential to break through the bottlenecks. This review summarizes the most representative and recent heterostructured HER catalysts for alkaline medium. The basics and principles of the HER under alkaline conditions are first introduced, followed by a discussion of the latest advances in heterostructured catalysts with/without noblemetal-based heterostructures. Special focus is placed on approaches for enhancing the reaction rate by accelerating the Volmer step. This review aims to provide an overview of the current developments in alkaline HER catalysts, as well as the design principles for the future development of heterostructured nano-or micro-sized electrocatalysts.Jumeng Wei Min Zhou Anchun Long Yanming Xue Hanbin Liao Chao Wei Zhichuan J.Xu 2018Nano-Micro Letters2018,10,4:11
3Low-threshold topological nanolasers based on the second-order corner state显示文摘Topological lasers are immune to imperfections and disorder.They have been recently demonstrated based on many kinds of robust edge states,which are mostly at the microscale.The realization of 2D on-chip topological nanolasers with a small footprint,a low threshold and high energy efficiency has yet to be explored.Here,we report the first experimental demonstration of a topological nanolaser with high performance in a 2D photonic crystal slab.A topological nanocavity is formed utilizing the Wannier-type 0D corner state.Lasing behaviour with a low threshold of approximately 1μW and a high spontaneous emission coupling factor of 0.25 is observed with quantum dots as the active material.Such performance is much better than that of topological edge lasers and comparable to that of conventional photonic crystal nanolasers.Our experimental demonstration of a low-threshold topological nanolaser will be of great significance to the development of topological nanophotonic circuitry for the manipulation of photons in classical and quantum regimes.Weixuan Zhang Xin Xie Huiming Hao Jianchen Dang Shan Xiao Shushu Shi Haiqiao Ni Zhichuan Niu Can Wang Kuijuan Jin Xiangdong Zhang Xiulai Xu 2020Light(Science & Applications)2020,9,1:10
4Synthesis, properties and applications of one- and two- dimensional gold nanostructures显示文摘因为金 nanomaterials 的性质和功能高度依赖于他们的粒子尺寸,形状,和维数,金 nanocrystals 的控制合成是集中的研究的题目十年了。特别,各向异性的金 nanocrystals 例如 nanowires, nanobelts, nanoplates 和 nanosheets,在电子学由于他们的惹人注目的性质和有希望的应用吸引了许多注意,催化作用, photonics,察觉到并且 biomedicine。在这评论,我们将总结 onedimensional (1D ) 的最近的开发并且二维(2D ) 金 nanostructures。为这些 1D 和 2D 金牌 nanocrystals 的准备的合成方法的各种各样的类型将被描述。而且,我们将简短也介绍性质和这些 1D 和 2D 金牌 nanocrystals 的潜在的应用。Xun Hong Chaoliang Tan Junze Chen Zhichuan Xu Hua Zhang 2015Nano Research2015,8,1:9
5The constraints of strain partitioning and geochronology in Luonan-Luanchuan tectonic belts on Qinling orogenic belt显示文摘The Luonan-Luanchuan tectonic belt lies between the North China Block and Qinling Mountains, in- cluding the Luonan-Luanchuan fault zone and the strong deformation zone to the north of the fault. The ductile shear zone, imbricate brittle fault and duplex structure in the fault zone now are the expression of the same tectonic event in different depth. Such lineation structure exists in the tectonic belts as mineral lineation, elongation lineation, crenulation lineation, sheath folds and so on, indicating NE-directed plate motion. Fold axes and thrusts in the strong deformation zone are inclined to the Luonan-Luanchuan fault zone at small angles. The structures with different natures show a regular pattern, produced during oblique convergence of plates. The convergence factors are as follows:The direction of plate convergence is 22°, 31° and the angle between the plate convergence direction and plate boundary is 73°, 82° respectively in the west and east segment. The Luonan-Luanchuan tectonic belt was deformed strongly in 372 Ma, resulted from Erlangping back-arc ocean basin subduction sin- istrally and obliquely to North China Block during the collision of North China Block and South China Block.SONG ChuanZhong ZHANG GuoWei WANG YongSheng LI JiaHao CHEN ZeChao CAI ZhiChuan 2009Science China Earth Sciences2009,52,3:9
6In Situ X-ray Absorption Spectroscopy Studies of Nanoscale Electrocatalysts显示文摘Nanoscale electrocatalysts have exhibited promising activity and stability,improving the kinetics of numerous electrochemical reactions in renewable energy systems such as electrolyzers,fuel cells,and metal-air batteries.Due to the size effect,nano particles with extreme small size have high surface areas,complicated morphology,and various surface terminations,which make them different from their bulk phases and often undergo restructuring during the reactions.These restructured materials are hard to probe by conventional ex-situ characterizations,thus leaving the true reaction centers and/or active sites difficult to determine.Nowadays,in situ techniques,particularly X-ray absorption spectroscopy(XAS),have become an important tool to obtain oxidation states,electronic structure,and local bonding environments,which are critical to investigate the electrocatalysts under real reaction conditions.In this review,we go over the basic principles of XAS and highlight recent applications of in situ XAS in studies of nanoscale electrocatalysts.Maoyu Wang Líneyárnadóttir Zhichuan JXu Zhenxing Feng 2019Nano-Micro Letters2019,11,3:8
7A Flexible and Lightweight Biomass-Reinforced Microwave Absorber显示文摘Developing a flexible,light-weight and effective electromagnetic(EM)absorber remains challenging despite being on increasing demand as more wearable devices and portable electronics are commercialized.Herein,we report a flexible and lightweight hybrid paper by a facile vacuumfiltration-induced self-assembly process,in which cotton-derived carbon fibers serve as flexible skeletons,compactly surrounded by other microwave-attenuating components(reduced graphene oxide and Fe3O4@C nanowires).Owing to its unique architecture and synergy of the three components,the asprepared hybrid paper exhibits flexible and lightweight features as well as superb microwave absorption performance.Maximum absorption intensity with reflection loss as low as-63 dB can be achieved,and its broadest frequency absorption bandwidth of 5.8 GHz almost covers the entire Ku band.Such a hybrid paper is promising to cope with ever-increasing EM interference.The work also paves the way to develop low-cost and flexible EM wave absorber from biomass through a facile method.Yan Cheng Justin Zhu Yeow Seow Huanqin Zhao Zhichuan JXu Guangbin Ji 2020Nano-Micro Letters2020,12,10:7
8Facile synthesis of graphene via reduction of graphene oxide by artemisinin in ethanol显示文摘The preparation of reduced graphene oxide(RGO)by chemical reduction of graphene oxide(GO)usually involves highly toxic reducing agents which are harmful to the environment and human health.In this paper,a mediated facile and relative green approach for the preparation of RGO in ethanol using artemisinin as a reducing agent is reported for the first time.The morphology and de-oxidation efficiency of the obtained RGO were characterized by transmission electron microscope(TEM),atomic force microscope(AFM),and X-ray photoelectron spectroscopy(XPS).The results showed that artemisinin can effectively reduce GO into few-layered RGO with a high carbon to oxygen ratio(11.7).The mechanism for elimination of oxygen-containing functional groups decorated on GO nanosheets by artemisinin was proposed.The important features of relatively environmentally friendly and facile operation procedures endow this approach with great promise in the mass production of RGO and various graphene-based materials,especially for biomaterials.Dandan Hou Qinfu Liu Xianshuai Wang Ying Quan Zhichuan Qiao Li Yu Shuli Ding 2018Journal of Materiomics2018,4,3:6
9Retrospective Study of an Adenovirus Pneumonia Outbreak in Shenzhen in 2017显示文摘Dear Editor,Human adenoviruses (HAd Vs) are associated with respiratory,gastrointestinal,ophthalmological,genitourinary,and neurological infections.To date,more than 100genotypes of HAd Vs have been identified.They are classified into seven species,A to G (HAd V Working Group,http://gffzz01fc05ce3d5e4237h56q60vc6556n6x60.ffgz.tsg.suse.edu.cn/).Zhiwei Lu Heping Wang Yanmin Bao Zhichuan Li Huan Zhang Haixia Zhao Yuejie Zheng 2021Virologica Sinica2021,36,3:4
10The critical role of inorganic nanofillers in solid polymer composite electrolyte for Li+transportation显示文摘Compared with commercial lithium batteries with liquid electrolytes,all-solidstate lithium batteries(ASSLBs)possess the advantages of higher safety,better electrochemical stability,higher energy density,and longer cycle life;therefore,ASSLBs have been identified as promising candidates for next-generation safe and stable high-energy-storage devices.The design and fabrication of solid-state electrolytes(SSEs)are vital for the future commercialization of ASSLBs.Among various SSEs,solid polymer composite electrolytes(SPCEs)consisting of inorganic nanofillers and polymer matrix have shown great application prospects in the practice of ASSLBs.The incorporation of inorganic nanofillers into the polymer matrix has been considered as a crucial method to achieve high ionic conductivity for SPCE.In this review,the mechanisms of Li+transport variation caused by incorporating inorganic nanofillers into the polymer matrix are discussed in detail.On the basis of the recent progress,the respective contributions of polymer chains,passive ceramic nanofillers,and active ceramic nanofillers in affecting the Li+transport process of SPCE are reviewed systematically.The inherent relationship between the morphological characteristics of inorganic nanofillers and the ionic conductivity of the resultant SPCE is discussed.Finally,the challenges and future perspectives for developing high-performance SPCE are put forward.This review aims to provide possible strategies for the further improvement of ionic conductivity in inorganic nanoscale filler-reinforced SPCE and highlight their inspiration for future research directions.Zhichuan Shen Yifeng Cheng Shuhui Sun Xi Ke Liying Liu Zhicong Shi 2021Carbon Energy2021,3,3:4
11Approach to the Design Calculation of Sucker Rod Pumping Systems in Coalbed Methane Wells显示文摘The existing design of the pumping systems mainly focuses on the approximate computational formulae and procedures,which are developed based on the analytic approaches of conventional oil/gas fields.The calculation of polished rod loads usually just concerns about the static and inertial loads.And the computation of gearbox torque generally uses empirical formulae and correction factors.The above modeling procedures,if applied to the coalbed methane(CBM) wells,can not give the desired accuracy of the system design and its pertinent analysis.In this paper,based on the kinematic and dynamic analysis of the pumping system,the kinematic relation of polished rod is analyzed,and the variation of the total loads of polished rod is developed with the limits of CBM well conditions along the string.The gearbox torque calculation model is established by combining the counterbalance effect with the calculated dynamometer cards and torque factors.The application characteristics of this model are demonstrated by the example of ZH002-4 well in Qinshui basin.The interpretations of results show that the cranks of beam units should rotate in a counter clockwise direction viewed with the wellhead to the right.Compared with oil?gas fields,the dynamic and friction to polished rod load ratios are relatively high and the computation of polished rod loads should involve the static and inertial loads,as well as vibration and friction loads.And the dynamic load ratio decreases rapidly during the production.Besides,the total deformation of the string is small in CBM wells.As for balanced operation,the gearbox torque load usually has two approximately equal peaks and the magnitudes of instantaneous torque are just within 50% of unbalanced gearbox loadings.The proposed research improves efficiency of the pumping system,loads the pumping unit more uniformly,and provides the reasonable basis for selecting the units.WANG Fudong LIU Xinfu Guan Zhichuan LIU Chunhua 2011Chinese Journal of Mechanical Engineering2011,24,6:4
12A new insight into electrochemical detection of eugenol by hierarchical sheaf-like mesoporous NiCo2O4显示文摘NiCo 2 有像捆的 nanostructure 形态学的 O 4 nanosheets 被热水的反应由退火跟随了的一出灵巧的一步舞综合了处理。给人深刻印象地, NiCo 2 O 4 nanosheets 展览 eugenol 的快速的察觉。察觉的线性范围从 1500 M,并且察觉的限制是 5.4 下午。NiCo 2 O 4 修改了电极表明的高敏感,好重覆性和重制度,和长期的稳定性(在在 30 天的反应的 7% 减少) 。把工作基于这,为 eugenol 氧化的电气化学的反应机制被建议,并且另外, NiCo 2 O 4 修改了电极成功地在药的香油样品为 eugenol 的分析被采用。为在药的香油样品的 eugenol 的恢复价值在范围 98.7%105.5% 。Mylamparambil Udayan Anu Prathap Chao Wei Shengnan Sun Zhichuan J. Xu 2015Nano Research2015,8,8:3
13Methylesterification of cell-wall pectin controls the diurnal flower-opening times in rice显示文摘Flowers are the core reproductive organ of plants, and flowering is essential for cross-pollination. Diurnal flower-opening time is thus a key trait influencing reproductive isolation, hybrid breeding, and thermostability in plants. However, the molecular mechanisms controlling this trait remain unknown. Here, we report that rice Diurnal Flower Opening Time 1 (DFOT1) modulates pectin methylesterase (PME) activity to regulate pectin methylesterification levels of the lodicule cell walls, which affect lodicule swelling to control diurnal flower-opening time. DFOT1 is specifically expressed in the lodicules, and its expression gradually increases with the approach to flowering but decreases with flowering. Importantly, a knockout of DFOT1 showed earlier diurnal flower opening. We demonstrate that DFOT1 interacts directly with multiple PMEs to promote their activity. Knockout of PME40 also resulted in early diurnal flower opening, whereas overexpression of PME42 delayed diurnal flower opening. Lower PME activity was observed to be associated with higher levels of pectin methylesterification and the softening of cell walls in lodicules, which contribute to the absorption of water by lodicules and cause them to swell, thus promoting early diurnal flower opening. Higher PME activity had the opposite effect. Collectively, our work uncovers a molecular mechanism underlying the regulation of diurnal flower-opening time in rice, which would help reduce the costs of hybrid breeding and improve the heat tolerance of flowering plants by avoiding higher temperatures at anthesis.Mumei Wang Xiaopei Zhu Guoqing Peng Minglong Liu Shuqing Zhang Minghao Chen Shitang Liao Xiaoying Wei Peng Xu Xiyu Tan Fangping Li Zhichuan Li Li Deng Ziliang Luo Liya Zhu Shuai Zhao Dagang Jiang Jing Li Zhenlan Liu Xianrong Xie Shaokui Wang Aimin Wu Chuxiong Zhuang Hai Zhou 2022Molecular Plant2022,15,6:2
14From Two-Phase to Three-Phase: The New Electrochemical Interface by Oxide Electrocatalysts显示文摘Electrochemical reactions typically occur at the interface between a solid electrode and a liquid electrolyte. The charge exchange behaviour between these two phases determines the kinetics of electrochemical reactions. In the past few years, significant advances have been made in the development of metal oxide electrocatalysts for fuel cell and electrolyser reactions. However, considerable gaps remain in the fundamental understanding of the charge transfer pathways and the interaction between the metal oxides and the conducting substrate on which they are located. In particular, the electrochemical interfaces of metal oxides are significantly different from the traditional(metal) ones, where only a conductive solid electrode and a liquid electrolyte are considered. Oxides are insulating and have to be combined with carbon as a conductive mediator.This electrode configuration results in a three-phase electrochemical interface, consisting of the insulating oxide, the conductive carbon, and the liquid electrolyte. To date, the mechanistic insights into this kind of non-traditional electrochemical interface remain unclear. Consequently conventional electrochemistry concepts, established on classical electrode materials and their two-phase interfaces, are facing challenges when employed for explaining these new electrode materials.Zhichuan J.Xu 2018Nano-Micro Letters2018,10,1:2
15Effects of catalyst mass loading on electrocatalytic activity:An example of oxygen evolution reaction显示文摘The evaluation of the intrinsic activity of catalysts is the most basic in searching energy-and cost-efficient catalyst materials for various applications.The accurate determination of the intrinsic activity is essential for identifying efficient catalysts.While a huge number of studies of electrocatalysis for various applications have been reported,the effects of electrode loading on the apparent intrinsic activity obtained experimentally have been rarely discussed.With a high mass loading on the electrode,not all the catalyst surfaces can be electrochemically active because not all the surfaces can be wetted by the electrolyte.The loading also affects the transport of electrons over the electrode as well as the transport of ions in the electrolyte,and thus affects the kinetics.These lead to the derivations of the apparent intrinsic activity from the real intrinsic activity.Herein,for better understanding the derivations,we evaluate and discuss the effects of electrode mass loading using oxygen evolution reaction as an example.Linghui Yu Shengnan Suna Haiyan Li Zhichuan JXu 2021Fundamental Research2021,1,4:2
16Electrodeposited Sulfur and CoxS Electrocatalyst on Buckypaper as High-Performance Cathode for Li-S Batteries显示文摘Lithium-sulfur batteries(LSBs)are considered as the next generation of advanced rechargeable batteries because of their high energy density.In this study,sulfur and CoxS electrocatalyst are deposited on carbon nanotube buckypaper(S/CoxS/BP)by a facile electrodeposition method and are used as a binder-free high-performance cathode for LSBs.Elemental sulfur is deposited on buckypaper by electrooxidation of a polysulfide solution(-S6^2-).This approach substantially increased the current and time efficiency of sulfur electrochemical deposition on conductive material for LSBs.S/CoxS/BP cathode could deliver an initial discharge capacity as high as 1650 mAh g^-1 at 0.1 C,which is close to the theoretical capacity of sulfur.At current rate of 0.5 C,the S/CoxS/BP has a capacity of 1420 mAh g^-1 at the first cycle and 715 mAh g^-1 after 500 cycles with a fading rate of 0.099%per cycle.The high capacity of S/CoxS/BP is attributed to both the homogeneous dispersion of nanosized sulfur within BP and the presence of CoxS catalyst.The sodium dodecyl sulfate(SDS)pretreatment of BP renders it polarity to bind polysulfides and thus facilitates the good dispersibility of nanosized sulfur within BP.CoxS catalyst accelerates the kinetics of polysulfide conversion and reduces the presence of polysulfide in the cathode,which suppresses the polysulfide diffusion to anode,i.e.,the shuttle effect.The mitigation of the active material loss improves not only the capacity but also the cyclability of S/CoxS/BP.Yi Zhan Andrea Buffa Linghui Yu Zhichuan JXu Daniel Mandler 2020Nano-Micro Letters2020,12,10:2
17The IR spectra of complexes of fibre containing amidoxime groups with Fe,Ni,Cd,ang Hg显示文摘WU ZHICHUAN TAO TINGXIAN YE SHENGMEI Functional Material0,35,3:1
18Synthesis,functionalization,and biomedical applications of multifunctional magnetic nanoparticles显示文摘Hao Rui Xing Ruijun Xu Zhichuan 0,,25:1
19Recent development of molybdenum sulfides as advanced elec- trocatalysts for hydrogen evolution reaction显示文摘YAN Ya XIA Baoyu XU Zhichuan 2014ACS Catal2014,4,6:1
20Problems and developing direction of anti-collision technology in the dense well pattern area 显示文摘GUAN Zhichuan LIU Yongwang SHI Yucai 2010Procedia Engineering2010,7,:1
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