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Unravelling the critical role of surface Nafion adsorption in Ptcatalyzed oxygen reduction reaction by in situ electrical transport spectroscopy

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Science China Chemistry 2022年第11期65卷 2290-2298页

作者： Yamei Sun Jingyi Tian Zhangyan Mu Bailin Tian Qiulan Zhou Cheng Liu shengtang Liu Qiang Wu Mengning Ding Key Laboratory of Mesoscopic Chemistry of MOE State Key Laboratory of Analytical Chemistry for Life SciencesSchool of Chemistry and Chemical EngineeringNanjing UniversityNanjing210023China

Solid-state ionic conductor is a vital part in all electrochemical energy conversion devices. As a widely-applied protonconducting polymer and stabilizer for electrode preparation, Nafion has key applications in electrochemical devices operated under acidic conditions. Specific adsorption of Nafion on the catalyst surface is considered to result in partial loss of intrinsic activity in reactions such as oxygen reduction reaction(ORR), due to its comprehensive occupation of active sites. Many in situ characterization methods such as voltammetric fingerprinting and spectroscopic approaches have been used to explore the dynamic adsorption of Nafion on the electrode surface. However, most of current efforts have been focused on the behaviors of Nafion itself, with little attention paid to its effects on the adsorption of surface intermediates. Here, we employed the in situ electrical transport spectroscopy(ETS) to investigate Nafion adsorption on Pt catalysts and its effects on the ORR *** findings suggest that specific adsorption of Nafion results in the increased coverage of oxygen intermediates with weaker adsorption strength, which in turn plays a critical role in the reaction selectivity. The successful application of ETS on the dynamic characterization of reaction intermediates provides a novel perspective for catalyst design in ORR-related applications in future sustainable chemistry.

关键词： electrical transport spectroscopy Nafion adsorption oxygen reduction reaction platinum hydrogen peroxide

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Application Strategy of Composite Steel Composite Beams in Bridge Design

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Journal of World Architecture 2024年第2期8卷 31-36页

作者： shengtang Wang Chongqing Leway Civil Engineering Design Co. Ltd.Chongqing 400000China

The combined prefabricated steel-hybrid stacked girder structure is very common in modern bridge *** actual bridge engineering design project is taken as an example in this paper to analyze the application strategy of this structure,encompassing overall design strategy,structural design strategy,and structural calculation *** aim is to offer insights that can enhance the quality of bridge design.

关键词： Prefabrication Steel-hybrid stacked girder Bridge design Structural design and calculation

Seismic Reduction and Isolation Design Strategies for Bridges in High-Intensity Earthquake Areas

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Journal of Architectural Research and Development 2024年第1期8卷 68-74页

作者： shengtang Wang Chongqing Leway Civil Engineering Design Co. Ltd.Chongqing 400000China

High-intensity earthquakes can cause severe damage to bridges,buildings,and ground surfaces,as well as disrupt human *** earthquakes can create long-distance,high-intensity surface movements that negatively impact bridge *** article delves into the seismic reduction and isolation design strategies for bridges in high-intensity earthquake *** analyzes various seismic reduction and isolation technologies and provides case studies to help relevant units understand the design strategies of these *** results of this article can be used as a guideline to effectively enhance the seismic performance of bridges in high-intensity earthquake areas.

关键词： High-intensity earthquake areas Rubber isolation Seismic reinforcement technology

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抗滑桩计算的综合刚度与三参数法数值解

岩石力学与工程学报 2014年第A02期33卷 3718-3723页

作者：邹盛堂戴自航福州大学土木工程学院福建福州350108

为更加可靠地计算抗滑桩的位移和内力,提出采用桩–土共同作用的综合刚度和地基抗力三参数法进行抗滑桩计算的方法,建立基于该方法的弹性地基杆系有限元数值解。根据某工程抗滑桩的推桩试验实测位移和弯矩,反演得到桩–土共同作用的综... 详细信息

为更加可靠地计算抗滑桩的位移和内力,提出采用桩–土共同作用的综合刚度和地基抗力三参数法进行抗滑桩计算的方法,建立基于该方法的弹性地基杆系有限元数值解。根据某工程抗滑桩的推桩试验实测位移和弯矩,反演得到桩–土共同作用的综合刚度和地基抗力三参数,并将有限元数值分析结果与试验桩在各级荷载作用下的实测桩身位移和弯矩进行对比。研究结果表明:岩土体地基水平抗力参数表现为典型的非线性特性,当荷载增大导致桩身位移加大时,地基水平抗力参数明显减小,同时桩–土共同作用的综合刚度也存在一定程度地变小。

关键词：桩基础抗滑桩内力综合刚度三参数法杆系有限元

Superlattice Structure from Re-stacked NiFe Layer Double Hydroxides for Oxygen Evolution Reaction

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Chemical Research in Chinese Universities 2020年第4期36卷 680-684页

作者： LIU Shcngtang YANG Miao LIU Cheng TIAN Bailin DFNG Mengning Key Laboratory of Mesoscopic Chemistn\School of Chemistry and Chemical Engineering Nanjing UniversityNanjing 210023P.R.China

Layer double hydroxides(LDHs)have drawn significant amount of rescarch attentions as a typical category of inorganic 2D materials,with facile synthetic methodologies and a wide range of applications in catalysis and energy storage[1,2].LDHs consist of positively charged brucite-like host layers containing M(OH),octahedra,while anions and solvation molecules filled the interlayer for charge ***.

关键词： Layer double hydroxide Self-assembly Superlattice Oxygene volution reaction

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人民监督员制度宪政意义初探

人民检察 2006年第8S期 12-14页

作者：文盛堂最高人民检察院办公厅人民监督工作办公室

正在检察机关试行的人民监督员制度，是检察机关查办职务犯罪工作接受人民群众有效监督的新模式，具有充分的宪政理论依据，反映了司法实践的需求，是人民主权原则在我国司法工作中的一种良好的宪政实践。因此，《中共中央关于进一步加... 详细信息

正在检察机关试行的人民监督员制度，是检察机关查办职务犯罪工作接受人民群众有效监督的新模式，具有充分的宪政理论依据，反映了司法实践的需求，是人民主权原则在我国司法工作中的一种良好的宪政实践。因此，《中共中央关于进一步加强人民法院、人民检察院工作的决定》强调指出，要推进人民监督员制度的规范化和法制化。

关键词：人民监督员制度宪政意义人民主权原则检察机关检察院工作有效监督人民群众职务犯罪宪政理论司法实践

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人民监督员制度的理论依据与立法探析

人民检察 2005年第6S期 12-13页

作者：文盛堂最高人民检察院办公厅人民监督工作办公室

党的十六大确定推进司法体制改革的重要任务后,最高人民检察院通过认真调研和论证,经党中央批准并报告全国人大常委会,决定建立人民监督员制度,由民主推荐的人民监督员对检察机关查办职务犯罪工作实施监督.从2003年8月正式部署并及时启... 详细信息

党的十六大确定推进司法体制改革的重要任务后,最高人民检察院通过认真调研和论证,经党中央批准并报告全国人大常委会,决定建立人民监督员制度,由民主推荐的人民监督员对检察机关查办职务犯罪工作实施监督.从2003年8月正式部署并及时启动试点工作以来,这项制度一直在健康有序地推进,取得了良好的成效.

关键词：人民监督员制度最高人民检察院全国人大常委会 2003年8月立法司法体制改革党的十六大重要任务实施监督职务犯罪检察机关民主推荐试点工作党中央

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中粳稻淮稻6号特征特性及其选育原理

江苏农业科学 2006年第1期34卷 24-26页

作者：袁生堂江苏徐淮地区淮阴农业科学研究所江苏淮安223001

介绍了淮稻6号的特征特性及产量表现。通过对淮稻6号选育思想和方法途径的回顾思考,认为亲本选配、优化穗粒结构、塑造理想株型、米质改良、聚合垂直与田间抗性、根据温光条件确定适宜的生育期,是淮稻6号选育成功的主要原因。

关键词：粳稻特征特性产量选育原理

BASIC　EQUATIONS　FOR　THERMO－ELECTROCHEMISTRYAND　THE　ENTROPY　CHANGE　OF　THE　STANDARDHYDROGEN　ELECTRODE　REACTION

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Acta Metallurgica Sinica(English Letters) 1996年第3期9卷 189-192页

作者： FANG Zheng, ZHANG Hengzhong, ZHANG Pingming, HUANG shengtang,GUO Li and HU Guoqiang(Department of Chemistry, Central South University of Technology, Changsha 410O83, China)

A set of thermo-electrochemical (TEC) equations for the cell and half-cell reactions has been derived. Is is shown that the difference between the enthalpy change determined by TEC technology and the one calculated with the current thermodynamic data of ions of any half-cell reaction in electochemical systems is coastant. The absolute entrupy change of the standard hydrogen electrode reaction was determined to be 85.2 J.K-1 .mol-1 at room temperature:

关键词： thermo-electrochemistry absolute entropy standard hydrogen electrode