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Methanol Tolerant PWA-Pt/C Catalyst with Excellent Electrocatalytic Activity for Oxygen Reduction in Direct Methanol Fuel Cell

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Chinese Chemical Letters 2005年第9期16卷 1252-1254页

作者： Yan Zhuo lu tian hong lu Chang Peng LIU Ya Wen TANG Wei XING Changchun Institute of Applied Chemistry Graduate School of the Chinese Academy of Sciences Chinese Academy of Sciences Changchun 130022 Environmental Friendship Laboratory College of Chemistry and Environmental Science Nanjing Normal University Nanjing 210097

It was reported for the first time that phosphorictungstenic acid （PWA） could promote the oxygen reduction reaction （ORR） and inhibit the methanol oxidation reaction at the cathodic Pt/C catalyst in the direct methanol fuel cell （DMFC）. When the weight ratio of PWA to Pt/C is 1, the composite catalyst increases the reduction current of oxygen by about 38% and decreases the oxidation current of methanol by about 76% compared with that of the Pt/C catalyst.

关键词： DMFC phosphorictungstenic acid methanol tolerance oxygen reduction

Direct Electrochemical Oxidation of Dihydronicotiamide Adenine Dinucleotide(NADH) at An Ordered Carbon Nanotubes Electrode

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Chinese Chemical Letters 2003年第11期14卷 1171-1174页

作者： Jing CHEN Jian Chun BAO Chen Xin CAI tian hong lu Department of Chemistry Nanjing Normal UniversityNanjing 210097

An ordered carbon nanotubes (CNTs) film, which was template-synthesized within the porous of an alumina template, modified glassy carbon electrode is fabricated. The electrode exhibits potent electrocatalysis for NADH oxidation in PBS (pH 6.8) with a diminution of the overpotential of more than 600 mV. The anodic peak current increases linearly with NADH concentration from 2?0-5 mol/L to 1?0-3 mol/L with the detection limit of about 5?0-7 mol/L.

关键词： Carbon nanotube ordered carbon nanotube electrode electrocatalysis NADH.

Preparation of PdCo Bimetallic Hollow Nanospheres and its Electrocatalytic Activity for Oxidation of Formic Acid

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Chinese Chemical Letters 2006年第12期17卷 1623-1626页

作者： Ya Wen TANG Shuang CAO Ling Ling ZHANG Jian Chun BAO Ping ZHOU tian hong lu Department of Chemistry Nanjing Normal University Nanjing 210097 Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022

The PdCo bimetallic hollow nanospheres with 80 nm average diameter and around 9.0 nm thickness of the shell were prepared with a special reduction method and characterized with transmission electron microscopy （TEM）, X-ray diffraction （XRD） and energy dispersive spectroscopy （EDS）. The electrochemical measurements illustrated that the electrocatalytic activity of the PdCo bimetallic hollow nanospheres for the oxidation of formic acid is much higher than that of the Pd solid nanospheres.

关键词： PdCo hollow nanosphere catalyst formic acid.

THE ELECTROCHEMICAL BEHAVIOURS OF SOluBLE POLYIMIDES

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Chinese Chemical Letters 1995年第2期6卷 139-140页

作者： Ying ZHU Wei XING Gong Quan SUN Du GUO Meng Xian DING tian hong lu Shi Quan XI Laboratory or Fleclroanalylical Chemistry Changchun Institute of Applied ChemistryChinese Academy or SciencesChangchun130022

The electrochemical behaviours of three kinds of soluble polyimides were investigated for the first time. It was observed that the cyclic voltammograms(CVS) of these polyimides in nonaqueous solutions are obviously di... 详细信息

关键词：危?

ELECTROCHEMISTRY OF OI-μ-OXO-DIMANGANESE COMPLEX AT THIOURACIL MODIFIED GOLD ELECTRODE

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Chinese Chemical Letters 1992年第11期3卷 923-924页

作者： Jun Wei ZHENG Cong Xiao WU Du GUO tian hong lu Electroanalytical Laboratocy Changchun Institute of Applied Chemistry Chinese Academy of ScienceChangchun130022

The electrochemistry of di-μ-oxo-dimanganese complex was investigated. It was found that no redox peak was observed in the cyclic voltammogram (CV) of the complex at the bare gold electrode, but at thiouracil-modified gold electrode, a pair of redox peaks were observed showing that thiouracil can promote the proton-coupled electron transfer reaction of the complex.

关键词： ELECTROCHEMISTRY OF OI OXO-DIMANGANESE COMPLEX AT THIOURACIL MODIFIED GOLD ELECTRODE AT

Spin effect on redox acceleration and regioselectivity in Fe-catalyzed alkyne hydrosilylation

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National Science Review 2024年第2期11卷 155-167页

作者： Peng He Meng-Yang Hu Jin-hong Li tian-Zhang Qiao Yi-Lin lu Shou-Fei Zhu Frontiers Science Center for New Organic Matter State Key Laboratory and Institute of Elemento-Organic Chemistry Nankai University

Iron catalysts are ideal transition metal catalysts because of the Earths abundant, cheap, biocompatible features of iron salts. Iron catalysts often have unique open-shell structures that easily undergo spin crossover in chemical transformations, a feature rarely found in noble metal catalysts. Unfortunately, little is known currently about how the open-shell structure and spin crossover affect the reactivity and selectivity of iron catalysts, which makes the development of iron catalysts a low efficient trial-and-error program. In this paper, a combination of experiments and theoretical calculations revealed that the iron-catalyzed hydrosilylation of alkynes is typical spin-crossover catalysis. Deep insight into the electronic structures of a set of well-defined open-shell active formal Fe(0) catalysts revealed that the spin-delocalization between the iron center and the 1,10-phenanthroline ligand effectively regulates the iron center's spin and oxidation state to meet the opposite electrostatic requirements of oxidative addition and reductive elimination, respectively,and the spin crossover is essential for this electron transfer process. The triplet transition state was essential for achieving high regioselectivity through tuning the nonbonding interactions. These findings provide an important reference for understanding the effect of catalyst spin state on reaction. It is inspiring for the development of iron catalysts and other Earth-abundant metal catalysts, especially from the point of view of ligand development.

关键词： spin effect spin-delocalization spin crossover iron-catalysis alkyne hydrosilylation

CORROSION INHIBITION OF STEARIC ACID LANGMUIR-BLODGETT MONOLAYERS ON IRON

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Chinese Chemical Letters 1993年第1期4卷 87-88页

作者： Wei XING Yi Bin SHAN Du GUO tian hong lu Shi Ouan XI Laboratory of Electroanaiytical Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun130022

The Langmuir-Blodgett (LB) technique was used for the first time to study inhibition mechanism. Stearic acid Langmuir-Blodgett (SALB) monolayers showed a good inhibition effect on iron corrosion in neutral environment... 详细信息

关键词： Ho CORROSION INHIBITION OF STEARIC ACID LANGMUIR-BLODGETT MONOLAYERS ON IRON ACID

Unveiling non-radiative center control in CsPbBr_(3) nanocrystals:A comprehensive comparative analysis of hot injection and ligandassisted reprecipitation approaches

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Nano Research 2024年第5期17卷 4525-4534页

作者： Daocheng hong Yuchen Zhang Shuhan Pan Hanyu Liu Wei Mao Wanli Zhang Yuhui Ye Zhihong Wei Xuxing lu Xiaoyong Wang Zhenda lu Yuxi tian Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province Yancheng Institute of TechnologyYancheng 224051China Laboratory of Mesoscopic Chemistry of MOE School of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210023China College of Engineering and Applied Sciences Nanjing UniversityNanjing 210023China National Laboratory of Solid State Microstructures School of PhysicsCollaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing 210093China School of Electronic Electrical Engineering and PhysicsFujian University of TechnologyFuzhou 350118China

Metal-halide perovskite nanocrystals(NCs)have gained significant attention in the field of optoelectronic and photonic devices due to their promising *** their exceptional optical properties,the impact of different synthetic strategies on the fundamental nature of NCs,such as nonradiative recombination centers,remains poorly *** this study,we investigated the photophysical properties of CsPbBr_(3) NCs synthesized using two distinct methods,hot injection and ligand-assisted reprecipitation,at the individual particle *** observed different blinking behaviors under specific photoexcitation power densities and proposed,through intensity-lifetime analysis and Monte-Carlo simulations,that these different synthetic strategies can fabricate NCs with similar crystal structures but distinct surface quenchers with varying energy levels,which significantly affected the photo-induced blinking-down and blinking-up behaviors in individual *** findings indicate a practical and feasible approach for controlling defect engineering in perovskite NCs,with significant implications for their use in optoelectronic and other technological applications.

关键词： metal-halide perovskite nanocrystals photophysical properties nonradiative recombination centers hot injection method ligand-assisted reprecipitation

Exogeneous metal ions as therapeutic agents in cardiovascular disease and their delivery strategies

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Regenerative Biomaterials 2024年第2期3卷 1-16页

作者： Xiaoqian hong Geer tian Yang Zhu Tanchen Ren Department of Cardiology of the Second Affliated Hospital and State Key Laboratory of Transvascular Implantation Devices Cardiovascular Key Laboratory of Zhejiang ProvinceZhejiang University School of MedicineHangzhou 310o09China Binjiang Institute of Zhejiang University Hangzhou 310053China MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027China

Metal ions participate in many metabolic processes in the human body,and their homeostasis is crucial for *** cardiovascular diseases(CVDs),the equilibriums of metal ions are frequently interrupted,which are related to a variety of disturbances of physiological processes leading to abnormal cardiac *** supplement of metal ions has the potential to work as therapeutic strategies for the treatment of *** with other therapeutic drugs,metal ions possess broad availability,good stability and safety and diverse drug delivery *** delivery strategies of metal ions are important to exert their ther-apeutic effects and reduce the potential toxic side effects for cardiovascular applications,which are also receiving increasing *** local delivery strategies for metal ions based on various biomaterials are constantly being *** this review,we comprehensively summarized the positive roles of metal ions in the treatment of cVDs from three aspects:protecting cells from oxidative stress,inducing angiogenesis,and adjusting the functions of ion *** addition,we introduced the transferability of metal ions in vascular reconstruction and cardiac tissue repair,as well as the currently available engineered strategies for the precise delivery of metal ions,such as integrated with nanoparticles,hydrogels and scaffolds.

关键词： metal ions cardiovascular disease tissue engineering oxidative stress angiogenesis ion channel