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Protein & Cell 2016年第2期7卷 81-88页

作者： Qun zhang wenhua zhang College of Life Sciences State Key Laboratory of Crop Genetics and Germplasm Enhancement Nanjing AgriculturalUniversity Nanjing 210095 China

Cell division and expansion require the ordered arrangement of microtubules, which are subject to spatial and temporal modifications by developmental and environmental factors. Understanding how signals translate to changes in cortical microtubule organization is of fundamental importance. A defining feature of the cortical microtubule array is its association with the plasma membrane; modules of the plasma membrane are thought to play important roles in the mediation of microtubule organization. In this review, we highlight advances in research on the regulation of cortical microtubule organization by membrane-associated and membrane-tethered proteins and lipids in response to phytohormones and stress. The transmembrane kinase receptor Rho-like guanosine triphosphatase, phospholipase D, phosphatidic acid, and phosphoinositides are discussed with a focus on their roles in microtubule organization.

关键词： abiotic stresses cortical microtubule,lipids plasma membrane

Enhanced nitrogen electroreduction performance by the reorganization of local coordination environment of supported single atom on N(O)-dual-doped graphene

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Nano Research 2023年第7期16卷 9099-9106页

作者： Zhiqiang Bai wenhua zhang Yufang Liu School of Physics Henan Normal UniversityXinxiang 453007China School of Cable Engineering Henan Institute of TechnologyXinxiang 453000China Hefei National Research Center for Physical Sciences at the Microscale CAS Key Laboratory of Materials for Energy Conversion and Synergetic Innovation Centre of Quantum Information&Quantum PhysicsUniversity of Science and Technology of ChinaHefei 230026China

Developing stable and efficient catalysts for the electroreduction of nitrogen remains a huge challenge and single atom catalysts(SACs)are expected to achieve relatively high ammonia selectivity at low applied *** on density functional theory calculations,the potential application of 27 single transition metal(TM=Sc-Zn,Y-Ag,Hf-Au)atoms supported by N(O)-dualdoped graphene(TM-O_(2)N_(2)/G)for the electroreduction of nitrogen is intensively *** low nitrogen coverage,W(Mo,Nb,Ta)-O_(2)N_(2)/G are predicted to yield low ammonia selectivity(<13%)at limiting-potential of-0.58,-0.53,-0.56,and-0.76 V starting from adsorbed nitrogen with side-on mode,*** the increasing N_(2)coverage,the TM-O_(2)N_(2)/G is reconstructed as TM-(N_(2))2N_(2)/*** electroreduction of nitrogen proceeds from end-on adsorbed nitrogen molecule with high ammonia selectivity,and the limiting-potentials are theoretically predicted as-0.20,-0.40,-0.29,and-0.21 V on W(Mo,Nb,Ta)-(N_(2))2N_(2)/G,*** is suggested that utilizing the reorganization of local coordination environments of SACs by high coverage of reactant molecules under reaction condition can not only enhance the activity at lower limiting-potential but also improve the ammonia selectivity.

关键词： nitrogen reduction reaction single atom catalysis local structure reorganization doped graphene electroreduction

Theoretical investigation of gold based model catalysts

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Science China Chemistry 2015年第4期58卷 565-573页

作者： wenhua zhang Weixin Huang Jinlong Yang Key Lab of Materials for Energy Conversion Department of Materials Science and Engineering University of Science and Technology of China Synergetic Innovation Center of Quantum Information & Quantum Physics University of Science and Technology of China Hefei National Lab for Physical Sciences at the Microscale

With potential applications in various fields, gold related catalysts have received intensive attentions. In the past decade, mechanisms of gold catalysis for low-temperature CO oxidation, NOx oxidation/reduction, selective oxidation of alcohols have been investigated both experimentally and theoretically based on model catalysts using free or supported gold nanoparticles and single crystal gold surfaces. In this short review, we summarize recent theoretical studies on molecular oxygen activation process, water or hydroxyl involved oxidation reaction, and also the effect of local structure on the reactivity and selectivity.

关键词： gold catalysis CO oxidation mechanism NO reduction alcohol selective oxidation local structure effect

gt-C3N4 coordinated single atom as an efficient electrocatalyst for nitrogen reduction reaction

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Nano Research 2019年第5期12卷 1181-1186页

作者： Lifu zhang Wanghui Zhao wenhua zhang Jing Chen Zhenpeng Hu School of Physics Nankai UniversityTianjin 300071China Hefei National Laboratory for Physical Sciences at the Microscale CAS Key Laboratory of Materials for Energy Conversion and Synergetic Innovation Centre of Quantum Information & Quantum PhysicsUniversity of Science and Technology of ChinaHefei 230026China Collaborative Innovation Center of Extreme Optics Shanxi UniversityTaiyuan 030006China

The electrochemical reduction of nitrogen to ammonia is a promising way to produce ammonia at mild *** design and preparation of an efficient catalyst with high ammonia selectivity is critical for the real *** this work,a series of transition metal (TM =Sc,Ti,V,Cr,Mn,Fe,Co,Ni,Cu,Zn,Y,Zr,Nb,Mo,Tc,Ru,Rh,Pd,Ag,and Cd) atoms supported by gt-C3N4 (TM/gt-C3N4) are investigated as electrocatalysts for the nitrogen reduction reaction (NRR) based on density functional *** is found that Mo/gt-C3N4 with a limiting potential of-0.82 V is the best catalyst for standing-on adsorbed N2 *** for lying-on adsorbed N2 cases,V/gt-C3N4 with a limiting potential of-0.79 V is berer than other *** is believed that this work provides several promising candidates for the non-noble metal electrocatalysts for NRR at mild condition.

关键词： nitrogen reduction reaction single-atom catalyst first-principles calculation Gibbs free energy

Early Hydration and Setting Process of Fly Ash-blended Cement Paste under Different Curing Temperatures

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Journal of Wuhan University of Technology(Materials Science) 2020年第3期35卷 551-560页

作者： zhang wenhua WU Fan zhang Yunsheng Civil Engineering Department Nanjing Forestry UniversityNanjing 210037China Department of Materials Science and Engineering Southeast UniversityJiangsu Key Laboratory of Construction MaterialsNanjing 211189China

A specially developed ultrasonic measurement apparatus (UMA) was used to in situ monitor the setting process of fly ash blended cement paste. Combined with the results of Vicat Needle tests, isothermal calorimetric measurement, XRD analysis, SEM morphology and compressive test, the influence of curing temperature (20, 40, 60, and 90 ℃) and fly ash content (0,10%, 20% and 30%) on the setting and hydration process of fly ash blended cement paste was analyzed. The results show that setting and hardening process of fly ash blended cement paste at elevated temperature can be clearly identified into three stages including dormant stage, acceleration stage and deceleration stage. The increasing of curing temperature greatly accelerates the setting and hardening process. However, the content of fly ash does not have significant effect on the setting in condition of 90 ℃. Besides, the initial and final setting time of cement paste is correspondent with the time of duration of dormant stage and the time of UPV value is 1500 m/s (T1500), respectively. Thus, the UMA can be used to determine the initial and final setting time of cementitious material under different curing temperatures. The compressive test results indicate that the paste with 20% fly ash presents higher compressive strength than the plain paste at curing temperatures of 90 ℃. Therefore, appropriate amount of fly ash is beneficial for concrete in the high temperature curing conditions.

关键词： ultrasonic setting and hardening process curing temperature fly ash microstructure

Fabrication of electrochemically-modified BiVO_(4)-MoS_(2)-Co_(3)O_(4)composite film for bisphenol A degradation

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Journal of Environmental Sciences 2021年第4期33卷 341-351页

作者： Yanqing Cong wenhua zhang Wenchen Ding Tongtong zhang Yi zhang Nianping Chi Qi Wang School of Environmental Science and Engineering Zhejiang Gongshang UniversityHangzhou 310018China Institute of Urban Aquatic Environment Zhejiang Gongshang UniversityHangzhou 310018China

A new electrochemically-modified BiVO_(4)-MoS_(2)-Co_(3)O_(4)(represented as E-BiVO_(4)-MoS_(2)-Co_(3)O_(4))thin film electrode was successfully synthesized for environmental ***_(2)and Co_(3)O_(4)were grown on the surface of Bi VO 4 to obtain BiVO_(4)-MoS_(2)-Co_(3)O_(4).E-BiVO_(4)-MoS_(2)-Co_(3)O_(4)film was achieved by further electrochemical treatment of BiVO_(4)-MoS_(2)-Co_(3)O_(4).The asprepared E-BiVO_(4)-MoS_(2)-Co_(3)O_(4)exhibited significantly enhanced photoelectrocatalytic *** photocurrent density of E-BiVO_(4)-MoS_(2)-Co_(3)O_(4)thin film is 6.6 times that of Bi VO 4 under visible light *** degradation efficiency of E-BiVO_(4)-MoS_(2)-Co_(3)O_(4)for bisphenol A pollutant was 81.56%in photoelectrochemical *** pseudo-first order reaction rate constant of E-BiVO_(4)-MoS_(2)-Co_(3)O_(4)film is 3.22 times higher than that of Bi VO *** its reaction rate constant in photoelectrocatalytic process is 14.5 times or 2 times that in photocatalytic or electrocatalytic process,*** improved performance of E-BiVO_(4)-MoS_(2)-Co_(3)O_(4)was attributed to the synergetic effects of the reduction of interfacial charge transfer resistance,the formation of oxygen vacancies and sub-stoichiometric metal oxides and higher separation efficiency of photogenerated electron-hole pairs.E-BiVO_(4)-MoS_(2)-Co_(3)O_(4)is a promising composite material for pollutants removal.

关键词： Electrochemically-modified BiVO_(4)-MoS_(2)-Co_(3)O_(4) Photoelectrocatalytic(PEC) Electrochemical modification Visible light Bisphenol A(BPA)

Establishing Gene Delivery Systems Based on Small-Sized Chitosan Nanoparticles

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Journal of Ocean University of China 2018年第5期17卷 1253-1260页

作者： WANG Liping zhang wenhua ZHOU Quan LIU Shihai XU wenhua SUN Teng LIANG Ye Key Laboratory Department of Urology and AndrologyAffiliated Hospital of Qingdao University Department of Inspection Qingdao University Central Laboratory Affiliated Hospital of Qingdao University Laboratory Animal Center Affiliated Hospital of Qingdao University Department of Outpatient Affiliated Hospital of Qingdao University

Chitosan is a natural cationic polysaccharide, which is often used for preparing biomedical materials because of its high biocompatibility. In this study, chitosan with a molecular weight of 160 kDa was chosen to prepare chitosan nanoparticles （CSNPs） as gene vectors by ionic cross-linking with tripolyphosphate （TPP）. CSNPs were characterized in terms of particle size, zeta potential, and polydispersity index （PDI） using a Zetasizer, and morphology was evaluated by transmission electron microscopy （TEM）. Furthermore, the cytotoxicity and biocompatibility of CSNPs were correspondingly examined by a 3-（4,5-dimethylthiazol-2-yl）-2,5- diphenyltetrazolium bromide （MTT） assay and histological examination. Agarose gel electrophoresis and UV spectrophotometric methods were performed to measure the loading capacity. The cell transfection efficiency of CSNPs loaded with plasmids or siRNA was analyzed by fluorescence microscopy or laser scanning confocal microscopy. The results showed that CSNPs were prepared successfully by the ionic gelation method, which had a smaller partcticle size （100 nm-200 nm）, stable dispersibility, low cytotoxicity, good tissue-biocompatibility, and high gene-loading efficiency. These CSNPs could transfer the plasmids or siRNA to cells. However, CSNPs might have a much higher transfection efficiency for siRNAs than for plasmids, which implies that CSNPs might be a safer and more efficient vector for delivering siRNAs rather than plasmids.

关键词： chitosan nanoparticles gene delivery

Two Cluster-Based Coordination Polymers Derived from [Et_(4)N][Tp*WS_(3)(CuBr)_(3)] and CuCN: Isolation, Structures and Amplified Third-Order Nonlinear Optical Responses

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Chinese Journal of Chemistry 2014年第10期32卷 1065-1071页

作者： Quan Liu wenhua zhang Zhenrong Sun Jianping Lang College of Chemistry Chemical Engineering and Materials ScienceSoochow UniversitySuzhouJiangsu 215123China College of Chemistry and Chemical Engineering Nantong UniversityNantongJiangsu 226019China Department of Physics East China Normal UniversityShanghai 200062China

Treatment of a W/Cu/S precursor[Et_(4)N][Tp*WS_(3)(CuBr)_(3)](1)with three *** CuCN in DMF/MeCN/benzonitrile(or α-tolunitrile)yielded two[Tp*WS_(3)Cu_(3)(μ_(3)-DMF)]-based coordination polymers,[Tp*WS_(3)Cu_(3)(μ_(3)-DMF)(CN)_(3)Cu]_(2)•2DMF(2•2DMF)and[Tp*WS_(3)Cu_(3)(μ_(3)-DMF)(CN)_(3)Cu(α-tolunitrile)]_(2)•3MeCN(3•3MeCN),*** analysis revealed that 2 adopts a 2D network with a 4.8^(2) topology while 3 has a 1D ladder-type *** third-order nonlinear optical responses of 2 and 3 in DMF were 10 times enhanced compared to those of the precursor cluster 1.

关键词： W/Cu/S clusters CuCN coordination polymers crystal structures third-order NLO responses

Rice Phospholipase Dαis Involved in Salt Tolerance by the Mediation of H^+-ATPase Activity and Transcription

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Journal of Integrative Plant Biology 2011年第4期53卷 289-299页

作者： Peng Shen Rong Wang Wen Jing wenhua zhang College of Life Sciences State Key Laboratory of Crop Genetics and Germplasm Enhancement Nanjing Agricultural University Nanjing 210095 China

Phospholipase Dα（PLDα） is involved in plant response to salt stress,but the mechanisms remain unclear. We investigated rice PLDα（OsPLDa） localization and its effect on tonoplast（TP） and plasma membrane （PM） H^＋ -ATPase activity and transcription in response to *** rice suspension-cultured cells were treated with 100 mM NaCI,PLDa activity in cell extracts showed a transient activation with a threefold increase at 1 *** amount of OsPLDαprotein decreased slightly in the cytosolic fractions,whereas it increased significantly in the TP after NaCI ***α1 knockdown cells were developed using RNA interference（RNAi） *** increase in TP and PM H -ATPase activity induced by NaCI was significantly inhibited in OsPLDα1-RNAi *** of OsPLDα1 prevented the NaCI-induced increase in the transcript level of OsVHA-A（encodes TP H^＋-ATPase） and OSA2（encodes PM H^＋-ATPase）, as well as OsNHX1（encodes TP Na^＋ /H^＋ antiporter）.The cells died more in OsPLDα1-RNAi mutant than in wild type when they were treated with *** results suggest that OsPLDαis involved in salt tolerance in rice through the mediation of H^＋ -ATPase activity and transcription.

关键词： Rice Salts Brining Transcription ATPase Cells Lymphocytes

Single crystals of perovskites

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Journal of Semiconductors 2022年第12期43卷 1-4页

作者： Haiyue Dong Lixiu zhang wenhua zhang Jilin Wang Xiaoliang zhang Liming Ding School of Materials Science and Engineering Guilin University of TechnologyGuilin 541004China Center for Excellence in Nanoscience(CAS) Key Laboratory of Nanosystem and Hierarchical Fabrication(CAS)National Center for Nanoscience and TechnologyBeijing 100190China School of Materials and Energy Yunnan UniversityKunming 650500China School of Materials Science and Engineering Beihang UniversityBeijing 100191China

During last decade,metal halide perovskites(MHPs)have become research hotspot due to their superior optoelectronic properties[1−15].MHP single crystal was first reported in 1978[16].Up to now,MHP single crystals with various compositions have been synthesized and *** with perovskite polycrystalline films,perovskite single crystals show lower defect density,higher carrier mobility,longer carrier diffusion ***,we summarize the growth methods of perovskite single crystals,and discuss their optoelectronic applications,including perovskite solar cells(PSCs),photodetectors(PDs)and light-emitting diodes(LEDs).

关键词： perovskite crystals halide