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For more and purer hydrogen-the progress and challenges in water gas shift reaction

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能源化学:英文版 2023年第8期83卷 363-396,I0010页

作者： Limin Zhou Yanyan Liu Shuling Liu Huanhuan Zhang Xianli Wu ruofan shen Tao Liu Jie Gao Kang Sun Baojun Li Jianchun Jiang 218 Laboratory for Energy Catalysis Research Center of Green CatalysisCollege of ChemistryZhengzhou UniversityZhengzhou 450001HenanChina Institute of Chemical Industry of Forest Products CAFNational Engineering Lab.for Biomass Chemical UtilizationNanjing 210042JiangsuChina College of Science Henan Agricultural UniversityZhengzhou 450002HenanChina National Center for Nanoscience and Technology Beijing 100190China School of Life Sciences Northwestern Polytech UniversityXi'an 710072ShaanxiChina

The water gas shift(WGS) reaction is a standard reaction that is widely used in industrial hydrogen production and removal of carbon monoxide. The improved catalytic performance of WGS reaction also contributes to ammonia synthesis and other reactions. Advanced catalysts have been developed for both high and low-temperature reactions and are widely used in industry. In recent years, supported metal nanoparticle catalysts have been researched due to their high metal utilization. Low-temperature catalysts have shown promising results, including high selectivity, high shift rates, and higher activity potential. Additionally, significant progress has been made in removing trace CO through the redox reaction in electrolytic cell. This paper reviews the development of WGS reaction catalysts, including the reaction mechanism, catalyst design, and innovative research methods. The catalyst plays a crucial role in the WGS reaction, and this paper provides an instant of catalyst design under different conditions. The progress of catalysts is closely related to the development of advanced characterization techniques.Furthermore, modifying the catalyst surface to enhance activity and significantly increase reaction kinetics is a current research direction. This review goals to stimulate a better understanding of catalyst design, performance optimization, and driving mechanisms, leading to further progress in this field.

关键词： Water gas shift reaction Hydrogen production Heterogeneous catalysis Reaction Mechanism Single atomic catalysts

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论教育法典宪法基础的路径选择

中国高教研究 2024年第4期 32-38页

作者：申素平余若凡中国人民大学教育学院北京100872

发现教育法典的宪法基础,对于坚持依宪立法,坚持把宪法规定、宪法原则、宪法精神贯彻到教育法典编纂中具有重大意义。现行宪法上的教育相关条款遍布各章节中。通过梳理发现,宪法中存在国家确认和保障公民受教育权、国家发展社会主义教... 详细信息

发现教育法典的宪法基础,对于坚持依宪立法,坚持把宪法规定、宪法原则、宪法精神贯彻到教育法典编纂中具有重大意义。现行宪法上的教育相关条款遍布各章节中。通过梳理发现,宪法中存在国家确认和保障公民受教育权、国家发展社会主义教育事业以及国家实行社会主义思想教育三条逻辑脉络。几乎对应的,学界就教育法典的核心价值存在“保障公民受教育权”和“发展国家教育事业”两种代表性观点。引入容纳性标准和统摄性标准对两种观点加以检视,以“保障公民受教育权”作为教育法典的核心价值更为合理,并以此作为发现教育法典宪法基础的核心抓手。教育法典的宪法基础以受教育权作为其核心,以国家发展社会主义教育事业作为优先表现形态,以社会主义制度和党的领导作为根本立场。

关键词：教育法典宪法基础核心价值受教育权

Coupling atom ensemble and electron transfer in PdCu for superior catalytic kinetics in hydrogen generation

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Nano Research 2023年第7期16卷 9012-9021页

作者： Xinru Zhao Yanyan Liu Huiyu Yuan Hao Wen Huanhuan Zhang Saima Ashraf Shuyan Guan Tao Liu Sehrish Mehdi ruofan shen Xianji Guo Yanping Fan Baozhong Liu Baojun Li College of Chemistry and Chemical Engineering Henan Polytechnic UniversityJiaozuo 454000China College of Science Henan Agriculture UniversityZhengzhou 450002China College of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450001China Research Center of Green Catalysis College of ChemistryCollege of Mechanical and Power EngineeringZhengzhou UniversityZhengzhou 450001China CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety National Centre for Nanoscience and TechnologyBeijing 100190China State Collaborative Innovation Center of Coal Work Safety and Clean-efficiency Utilization Jiaozuo 454003China Department of Chemistry Tsinghua UniversityBeijing 100084China

The design of high-performance catalysts is the key to the efficient utilization of hydrogen energy.In this work,a PdCu nanoalloy was successfully anchored on TiO_(2)encapsulated with carbon to construct a catalyst.Outstanding kinetics of the hydrolysis of ammonia borane(turnover frequency of 279 mol·min^(-1·)mol_(Pd)^(-1))ranking the third place among Pd-based catalysts was achieved in the absence of alkali.Both experimental research and theoretical calculations reveal a lower activation energy of the B-H bond on the PdCu nanoalloy catalyst than that on pristine Pd and a lower activation energy of the O-H bond than that on pristine Cu.The redistribution of d electron and the shift of the d-band center play a critical role in increasing the electron density of Pd and improving the catalytic performances of Pd_(0.1)Cu_(0.9)/TiO_(2)-porous carbon(Pd_(0.1)Cu_(0.9)/T-PC).This work provides novel insights into highly dual-active alloys and sheds light on the mechanism of dual-active sites in promoting borohydride hydrolysis.

关键词： PdCu nanoalloy d-band holes ensemble effect borohydride hydrolysis dual-active sites

1993年《教师法》的制定进程、核心关切与自我定位

维普期刊数据库评论

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现代教育论丛 2024年第1期255卷 38-44页

作者：申素平余若凡中国人民大学教育学院北京100872

1993年《教师法》颁布至今未有实质性的修改。将1993年《教师法》置于历史语境中加以考察,有助于形成对1993年《教师法》,尤其是其中具有典型时代特征的条文更深层次和更系统的理解。1986年至1993年,历时八年,经全国人大常委会两度审议... 详细信息

1993年《教师法》颁布至今未有实质性的修改。将1993年《教师法》置于历史语境中加以考察,有助于形成对1993年《教师法》,尤其是其中具有典型时代特征的条文更深层次和更系统的理解。1986年至1993年,历时八年,经全国人大常委会两度审议《教师法》方得到通过。在立法进程中,1993年《教师法》中的教师待遇条款始终是立法者审议的重点。1993年《教师法》的出台,旨在回应保障教师各项待遇和加强教师队伍建设这两项核心关切。因此,它不仅是一部“教师权益保障法”,而且是一部“教师队伍建设法”。该法在结构体例上围绕“教师队伍建设”这一宏观命题谋篇布局,具有“宏观调控”特征。1993年《教师法》的立法进程、核心关切与自我定位对于《教师法》修改具有重要意义。

关键词： 1993年《教师法》制定进程核心关切自我定位

Engineering Vacancy-Atom Ensembles to Boost Catalytic Activity toward Hydrogen Evolution

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Energy & Environmental Materials 2023年第1期6卷 325-332页

作者： ruofan shen Yanyan Liu Hao Wen Xianli Wu Zhikun Peng Sehrish Mehdi Tao Liu Huanhuan Zhang Shuyan Guan Erjun Liang Baojun Li School of Physics and Microelectronics Zhengzhou UniversityZhengzhou 450001China Research Center of Green Catalysis College of ChemistryZhengzhou UniversityZhengzhou 450001China College of Science Henan Agricultural UniversityZhengzhou 450002China Department of Chemistry The Women UniversityKutchery CampusMultan 66000Pakistan CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety National Center for Nanoscience and TechnologyBeijing 100190China

The dissociation of water is the rate-determining step of several energy-relating reactions due to high energy barrier in homolysis of H-O bond.Herein,engineering vacancy-atom ensembles via injecting oxygen vacancy(V O)into single facet-exposed TiO_(2)-Pd catalyst to form V_(O)-Pd ensemble is proposed and implemented.The outstanding activity of as-prepared catalyst,1.5-PdTV_(O),toward water dissociation is established with a turnover frequency of 240 min^(−1) in ammonia borane hydrolysis at 298 K.Density functional theory simulation suggests that the V_(O)-Pd ensemble is responsible for the high intrinsic catalytic activity.Water molecules tend to be dissociated on V_(O) sites and ammonia borane molecules on Pd atoms.Those H atoms from water dissociation on V_(O) combine with H atoms from ammonia borane on Pd atoms to generate H_(2).This insights into engineering vacancy-atom ensembles catalysis provide a new avenue to design catalytic materials for important energy chemical reactions.

关键词： ammonia borane hydrogen evolution palladium vacancy-atom ensembles water dissociation

基于生态基因柔性修补的苏州老旧社区零碳化改造研究

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现代城市研究 2024年第4期39卷 64-69页

作者：谢超沈丽娜党啸赵若凡王艺霏香港大学建筑学院中国香港西北大学城市与环境学院新加坡国立大学

全球技术变革和产业革命向阳发展的新时期,急需探讨如何将社会的经济发展同生态环境优化充分结合。文章选取苏州古城内老旧社区作为设计研究案例,通过对案例地物质生态环境评估与人群行为特征的评估,发现基地内资源利用率低、空间场所... 详细信息

全球技术变革和产业革命向阳发展的新时期,急需探讨如何将社会的经济发展同生态环境优化充分结合。文章选取苏州古城内老旧社区作为设计研究案例,通过对案例地物质生态环境评估与人群行为特征的评估,发现基地内资源利用率低、空间场所缺失等问题。结合对传统营建生态基因与现代适变生态基因的识别,建立智慧生态基因图谱。以低碳排、高效能的城市改造策略进行区域的柔性修补,重构人地关系,建立适用性强的社区碳核算方法,为城市零碳化改造提供参考。

关键词：老旧社区城市更新城市基因碳核算减排路径

A three-dimensional polycyclic aromatic hydrocarbon based covalent organic framework doped with iodine for electrical conduction

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Chinese Chemical Letters 2023年第4期34卷 601-604页

作者： ruofan Li Guolong Xing Hui Li shen Li Long Chen Department of Chemistry Tianjin Key Laboratory of Molecular Optoelectronic ScienceTianjin UniversityTianjin 300072China Zhejiang Engineering Laboratory for Green Syntheses and Applications of Fluorine-Containing Specialty Chemicals Institute of Advanced Fluorine-Containing MaterialsZhejiang Normal UniversityJinhua 321004China State Key Laboratory of Inorganic Synthesis and Preparative Chemistry Jilin UniversityChangchun 130012China

Covalent organic frameworks(COFs) are a class of crystalline porous organic materials with variable structures and fascinating properties. The intrinsic low conductivity impedes their widely application in optoelectronic. Iodine doping is an effective way to enhance the electrical conductivity of COFs. Here, a novel 3D imine COF with lvt topology is synthesized from two different pentacene derivatives with the same core in the form of structural complementarity. DDHP-COF is a highly crystalline material featuring high surface area of 1679 m^(2)/g and excellent thermal stability up to 490 ℃. Upon doping with iodine, the electrical conductivity can reach as high as 1.5×10^(-2)S/m which is significantly enhanced over 6 orders of magnitude compared with the pristine COF.

关键词： Three-dimensional Covalent organic frameworks Imine linkage Chemical doping Electrical conduction

Optical properties of SERS substrate based on PVP-protected monolayer silver nanoparticles with tunable surface topographies

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Optical properties of SERS substrate based on PVP-protected ...

第十九届全国光散射学术会议

作者： Yangming Hu ruofan shen Erjun Liang School of Physical Engineering and Institute of Optoelectronic Information Science of Zhengzhou University

＜正＞Surface enhanced Raman scattering（SERS）spectroscopy with its high sensitivity on probing trace of molecules has become a powerful tool in chemical analysis,biomolecular sensor,food safety and so on.The

关键词： Surface enhanced Raman scattering SERS substrate Silver nanoparticles

来源： cnki会议评论

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HAN精品店设计

现代装饰 2021年第3期 166-169页

作者： Yusuke Kinoshita ruofan shen Kenshin Horikoshi(摄影) 舒禹(编译) ARCHIEE工作室

项目是ARCHIEE为HANSCOOL品牌所设计的两家精品店,分别以"圆形"与"方形"为主要概念。HANSCOOL是面向全球时装公司的面料供应商,而后决定推出自己的时装系列。该品牌不仅通过生产和使用高品质的面料脱颖而出,而且具有重新思考细节的能力... 详细信息

项目是ARCHIEE为HANSCOOL品牌所设计的两家精品店,分别以"圆形"与"方形"为主要概念。HANSCOOL是面向全球时装公司的面料供应商,而后决定推出自己的时装系列。该品牌不仅通过生产和使用高品质的面料脱颖而出,而且具有重新思考细节的能力,例如使用新的缝合技术,使某些制造工艺实现现代化。品牌过硬的专业素质也是ARCHIEE进行空间设计的重要灵感来源。

关键词：灵感来源缝合技术 COOL 空间设计制造工艺面料供应商生产和使用品牌