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Recent advances in morphology control of platinum catalysts toward oxygen reduction reaction

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Frontiers in Energy 2024年第3期18卷 330-355页

作者： Shun CHEN Yanru LIU Xiaogang FU wanglei WANG State Key Laboratory of Solidification Processing Atomic Control and Catalysis Engineering LaboratorySchool of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi’an 710072China State Key Laboratory of Oral and Maxillofacial Reconstruction and Regeneration National Clinical Research Center for Oral DiseasesShaanxi Key Laboratory of StomatologyDepartment of Dental MaterialsSchool of StomatologyThe Fourth Military Medical UniversityXi’an 710032China

Exploring advanced platinum (Pt)-based electrocatalysts is vital for the widespread implementation of proton exchange membrane fuel cells (PEMFCs). Morphology control represents an effective strategy to optimize the behavior of Pt catalysts. In this work, an attempt is made to comprehensively review the effect of morphology control on the catalytic behavior of catalysts in the oxygen reduction reaction (ORR). First, the fundamental physicochemical changes behind morphology control, including exposing more active sites, generating appropriate lattice strains, and forming different crystalline surfaces, are highlighted. Then, recently developed strategies for tuning the morphologies of electrocatalysts, including core-shell structures, hollow structures, nanocages, nanowires, and nanosheets, are comprehensively summarized. Finally, an outlook on the future development of morphology control of Pt catalysts is presented, including rational design strategies, advanced in situ characterization techniques, novel artificial intelligence, and mechanical learning. This work is intended to provide valuable insights into designing the morphology and technological innovation of efficient redox electrocatalysts in fuel cells.

关键词： morphology platinum catalysts electrocatalysis ORR PEMFC

Ultrasonic-enhanced Stereoselective Debromination of vic-Dibromides to Alkenes with Metallic Zinc Powder in Aqueous Media

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Chemical Research in Chinese Universities 2004年第5期20卷 598-601页

作者： LIPin-hua RAOWan-ping WANGMin wanglei DepartmentofChemistry HuaibeiCoalTeachersCollegeHuaibei235000P.R.China StateKeyLaboratoryofOrganometallicChemistry ShanghaiInstituteofOrganicChemistryChineseAcademyofSciencesShanghai200032P.R.China

Carbon-carbon double bond functional groups are often protected through a popular bromination/debromination method because of their reactivity. An ultrasonic-enhanced stereoselective debromination of vic-dibromides with metallic zinc powder in aqueous media has been developed, which generates E-alkenes with excellent yields. The reactivity of vic-dibromides decreases in the order of 1,2-dibromo-1,2-diphenylethane>1,2-dibromo-1-phenylethane>1,2-dibromo-1,2-dialkylethane.

关键词： Stereoselective debromination vic-Dibromides Alkenes Metallic zinc Ultrasonic irradiation Aqueous medium

Strain engineering of Pt-based electrocatalysts for oxygen reaction reduction

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Frontiers in Energy 2024年第2期18卷 241-262页

作者： Zeyu WANG Yanru LIU Shun CHEN Yun ZHENG Xiaogang FU Yan ZHANG wanglei WANG State Key Laboratory of Solidification Processing Atomic Control and Catalysis Engineering LaboratorySchool of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi’an 710072China State Key Laboratory of Oral and Maxillofacial Reconstruction and Regeneration National Clinical Research Center for Oral DiseasesShaanxi Key Laboratory of StomatologyDepartment of Dental MaterialsSchool of StomatologyThe Fourth Military Medical UniversityXi’an 710032China Institute of New Energy Materials and Engineering School of Materials Science and EngineeringFuzhou UniversityFuzhou 350108China Key Laboratory of Marine Chemistry Theory and Technology(Ministry of Education) College of Chemistry and Chemical EngineeringOcean University of ChinaQingdao 266100China

Proton exchange membrane fuel cells(PEMFCs)are playing irreplaceable roles in the construction of the future sustainable energy ***,the insufficient performance of platinum(Pt)-based electrocatalysts for oxygen reduction reaction(ORR)hinders the overall efficiency of *** the surface strain of catalysts is considered an effective way to tune their electronic structures and therefore optimize catalytic *** this paper,insights into strain engineering for improving Pt-based catalysts toward ORR are elaborated in ***,recent advances in understanding the strain effects on ORR catalysts are comprehensively ***,strain engineering methodologies for adjusting Ptbased catalysts are comprehensively ***,further information on the various challenges and potential prospects for strain modulation of Pt-based catalysts is provided.

关键词： strain engineering Pt-based catalysts oxygen reduction reaction(ORR) catalytic performance proton exchange membrane fuel cells(PEMFCs)

Porphyra haitanensis polysaccharide(PH)attenuates cell hyperplasia via remodeling the cross-talk between Hippo/YAP and mTOR pathways

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Food Science and Human Wellness 2023年第2期12卷 424-430页

作者： Chong Wang wanglei Lin Zhihua Sun Yiming Sun Yanbo Wang Linglin Fu Food Safety Key Laboratory of Zhejiang Province School of Food Science and BiotechnologyZhejiang Gongshang UniversityHangzhou 310018China The Affiliated High School to Hangzhou Normal University Hangzhou 310030China

Porphyra polysaccharide is a special kind of nutrient showing multiple physiological functions including regulating cell proliferation,but the detailed mechanisms are not fully revealed,impairing its further development and *** work was to purify and characterize the Porphyra haitanensis polysaccharide(PH),investigate its physiological function,and demonstrate the underlying *** purified PH was first characterized by Fourier-transform infrared *** an intestinal epithelial cell model was established,in which PH significantly suppressed cell ***,PH activated the Hippo/YAP pathway,which subsequently activated m TOR pathway,however m TOR activated Hippo in the absence of ***,both the inhibition of Hippo by YAP1 knock-down and the suppression of m TOR by rapamycin impaired PH *** results indicated that PH attenuated hyperplasia activity by remodeling the cross-talk between Hippo/YAP and m TOR pathways,which revealed potential targets and approaches for treating hyperplasia-related diseases and provided novel ways to utilize *** as well as other related functional foods.

关键词： Porphyra haitanensis Polysaccharide Hippo mTOR Cancer

Preparation and Characterization of CuInS_2 Thin Films for Solar Cells by Chemical Bath Deposition

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Chemical Research in Chinese Universities 2005年第2期21卷 236-239页

作者： TANGHui-xiang YANMi ZHANGHui MAXiang-yang wanglei YANGDe-ten StateKeyLaboratoryofSiliconMaterials ZhejiangUniversityHangzhou310027P.R.China

Recent years, chalcopyrite semiconductors have been successfully applied as absorber layers for polycrystalline thin-film solar cells. Among the ternary compound semiconductors, CuInS2 thin films with a direct bandgap of about 1.50 eV and a large absorption coefficient in the range of 104-105cm-1[1] are one kind of the most promising optical absorbers for high efficiency thin film solar *** date, CuInS2-based solar cells have shown conversion efficiency of about 12. 5%[2]. They exhibit long-term stability without any signs of degradation.

关键词： CuInS_2 Chemical bath deposition Thin films

BOUNDEDNESS OF MULTILINEAR FRACTIONAL INTEGRAL COMMUTATORS

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Applied Mathematics(A Journal of Chinese Universities) 2004年第2期19卷 212-222页

作者： wanglei PanTing Dept.ofMath. ZhejiangUniv.Hangzhou310028China Univ.ofInternationalRelation Hangzhou310015China

By introducing a kind of maximal operator of fractional order associated with the mean Luxemburg norm and using the technique of Sharp function,multilinear commutators of fractional integral operator with vector symbol b=(b 1,...,b m)defined byI b αf(x)=∫ R∏mj=1(b j(x)-b j(y))1｜x-y｜ n-αf(y)dyare *** following priori estimates are *** 101Φ1t｜｛y∈Rn:｜I b αf(y)｜>t｝｜ 1q≤ c supt>01Φ1t｜｛y∈Rn:M L(logL) 1r,α(‖b‖f)(y)>t｝｜ 1q,where ‖b‖=∏ m j=1‖b j‖ Osc expL r j,Φ(t)=t(1+log+t) 1r,1r=1r 1+...+1r m, M L(logL) 1r,α is an Orlicz type maximal operator.

关键词： fractional integral operator commutator sharp function Young function Luxemburg function.

学科能力构成及其表现研究——基于学习理解、应用实践与迁移创新导向的多维整合模型

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教育研究 2016年第9期37卷 83-92,125页

作者：王磊北京师范大学基础教育质量监测协同创新中心/化学学院/未来教育高精尖创新中心

学科能力是一个多维多层的复杂系统。通过构建基于学习理解、应用实践和迁移创新导向的多维整合模型,并进行大样本学生能力表现测试,研究结果表明,在当前的课程和教学条件下,学生相应学科课程的学习理解能力表现较好,应用实践能力表现... 详细信息

学科能力是一个多维多层的复杂系统。通过构建基于学习理解、应用实践和迁移创新导向的多维整合模型,并进行大样本学生能力表现测试,研究结果表明,在当前的课程和教学条件下,学生相应学科课程的学习理解能力表现较好,应用实践能力表现有待提高,迁移创新能力表现水平较低。学科能力表现及发展水平与学科领域、知识经验、学科能力活动及问题情境有关,知识经验的结构化和功能化程度是核心。学科能力的发展对课程和教学具有敏感性。促进学生学科能力发展应着力于基于学科能力要素设计丰富多样且有梯度的学习任务活动,加强教师教学观念向教学行为转化的培训和引导;同时,协同提升学科能力影响因素的水平,重视培养学生的学习动机和兴趣,重视学校资源和学校校风建设,以课程建设带动育人模式的改革和创新。

关键词：学科能力核心素养学习理解应用实践迁移创新能力表现

Wooden Wall Construction of Traditional Miao Stilted Buildings: A Case Study of Xijiang Miao Village in Guizhou

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Journal of Landscape Research 2019年第2期11卷 68-70页

作者： GAO Pei GAO wanglei Guizhou Minzu University

Wooden walls of traditional stilted buildings of Miao Nationality show outstanding regional characteristics. Taking the well-preserved traditional stilted buildings in Xijiang Miao Village for example, this paper focused on the construction units of the wooden wall, and the hierarchy of wooden wall construction, concluded spatial forms of the wooden wall, in order to explore the indigenous construction culture in the wooden wall system, protect and inherit the culture; seek for the ways of expressing national and regional characteristics in the modern architectural designs of relevant cultural regions.

关键词： Stilted buildings Wooden wall construction Xijiang Miao Village

Extending raw materials ordering policy with genetic algorithm

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吉林大学学报（工学版） 2004年第3期34卷 459-464页

作者： YUYugang LIANGLiang WANGZhiqiang wanglei SchoolofBusiness UniversityofScienceandTechnologyofChinaHefei230026China

A fractional-integral multiple ordering method was proposed to improve the integral multiple ordering method in material procurements. To illustrate the improvement effect, a new model considering a fractional-integral multiple ordering method was presented to extend the model proposed by Woo, Hsu, and Wu (2001), and a genetic algorithm was developed to resolve the modified model. Finally a numerical study based on the example used by Woo, Hsu, and Wu was presented to illustrate that the proposed model provided a lower or equal joint total relevant cost compared with Woo, Hsu, and Wu’s model.

关键词： vendor managed inventory integrated model lot size