Mechanistic Understanding of Size-Dependent Oxygen Reduction Activity and Selectivity over Pt/CNT Nanocatalysts

doi:10.1002/ejic.201801521

	Mechanistic Understanding of Size-Dependent Oxygen Reduction Activity and Selectivity over Pt/CNT Nanocatalysts
	Gan, Jie 2; Luo, Wei 2; Chen, Wenyao 2; Guo, Jianing 3; Xiang, Zhonghua 3; Chen, Bingxu 2; Yang, Fan 1; Cao, Yunjun 1; Song, Fei 4; Duan, Xuezhi 2
刊名	EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
	2019-07-23
期号	27 页码:3210-3217
关键词	Sustainable chemistry Catalysis Platinum Active site Density functional calculations
ISSN号	1434-1948
DOI	10.1002/ejic.201801521
通讯作者	Duan, Xuezhi(xzduan@ecust.edu.cn)
英文摘要	Identifying the underlying nature of the structure sensitivity of oxygen reduction reaction (ORR) over carbon supported Pt catalysts is an important but challenging issue in electrochemical system. In this work, we combine experiments, density functional theory calculations with model calculations to clarify the size-dependent ORR activity and selectivity over differently sized Pt/CNT catalysts. HAADF-STEM, HRTEM and XPS measurements show that the Pt nanoparticles supported on CNT possess a well-defined truncated octahedron shape in most cases and similar electronic properties. The observed size-insensitive TOFactive site based on the number of Pt(111) atoms suggests the Pt(111) surface as the dominant active site. Moreover, the Pt(111) surface is also suggested as the dominant active sites for the formation of H2O2, and the catalyst with the higher Pt binding energy facilitates the oxygen reduction to H2O. The insights revealed here could shed new light on the design and optimization of Pt-based ORR catalysts.
资助项目	Natural Science Foundation of China[21776077] ; Shanghai Natural Science Foundation[17ZR1407300] ; Shanghai Natural Science Foundation[17ZR1407500] ; Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning ; Shanghai Rising-Star Program[17QA1401200] ; State Key Laboratory of Organic-Inorganic Composites[oic-201801007] ; Open Project of State Key Laboratory of Chemical Engineering[SKLChe-15C03]
WOS关键词	CATALYZED HYDROLYTIC DEHYDROGENATION ; INITIO MOLECULAR-DYNAMICS ; TOTAL-ENERGY CALCULATIONS ; ELECTROCATALYTIC ACTIVITY ; PLATINUM ; KINETICS ; DESIGN ; DISCRIMINATION ; HYDROGENATION ; NANOPARTICLES
WOS研究方向	Chemistry
语种	英语
出版者	WILEY-V C H VERLAG GMBH
WOS记录号	WOS:000476762200012
资助机构	Natural Science Foundation of China ; Natural Science Foundation of China ; Shanghai Natural Science Foundation ; Shanghai Natural Science Foundation ; Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning ; Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning ; Shanghai Rising-Star Program ; Shanghai Rising-Star Program ; State Key Laboratory of Organic-Inorganic Composites ; State Key Laboratory of Organic-Inorganic Composites ; Open Project of State Key Laboratory of Chemical Engineering ; Open Project of State Key Laboratory of Chemical Engineering ; Natural Science Foundation of China ; Natural Science Foundation of China ; Shanghai Natural Science Foundation ; Shanghai Natural Science Foundation ; Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning ; Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning ; Shanghai Rising-Star Program ; Shanghai Rising-Star Program ; State Key Laboratory of Organic-Inorganic Composites ; State Key Laboratory of Organic-Inorganic Composites ; Open Project of State Key Laboratory of Chemical Engineering ; Open Project of State Key Laboratory of Chemical Engineering ; Natural Science Foundation of China ; Natural Science Foundation of China ; Shanghai Natural Science Foundation ; Shanghai Natural Science Foundation ; Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning ; Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning ; Shanghai Rising-Star Program ; Shanghai Rising-Star Program ; State Key Laboratory of Organic-Inorganic Composites ; State Key Laboratory of Organic-Inorganic Composites ; Open Project of State Key Laboratory of Chemical Engineering ; Open Project of State Key Laboratory of Chemical Engineering ; Natural Science Foundation of China ; Natural Science Foundation of China ; Shanghai Natural Science Foundation ; Shanghai Natural Science Foundation ; Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning ; Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning ; Shanghai Rising-Star Program ; Shanghai Rising-Star Program ; State Key Laboratory of Organic-Inorganic Composites ; State Key Laboratory of Organic-Inorganic Composites ; Open Project of State Key Laboratory of Chemical Engineering ; Open Project of State Key Laboratory of Chemical Engineering
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/173933]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
通讯作者	Duan, Xuezhi
作者单位	1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China 2.East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China 3.Beijing Univ Chem Technol, State Key Lab Organ Inorgan Composites, Beijing 100029, Peoples R China 4.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201204, Peoples R China
推荐引用方式 GB/T 7714	Gan, Jie,Luo, Wei,Chen, Wenyao,et al. Mechanistic Understanding of Size-Dependent Oxygen Reduction Activity and Selectivity over Pt/CNT Nanocatalysts[J]. EUROPEAN JOURNAL OF INORGANIC CHEMISTRY,2019(27):3210-3217.
APA	Gan, Jie.,Luo, Wei.,Chen, Wenyao.,Guo, Jianing.,Xiang, Zhonghua.,...&Zhou, Xinggui.(2019).Mechanistic Understanding of Size-Dependent Oxygen Reduction Activity and Selectivity over Pt/CNT Nanocatalysts.EUROPEAN JOURNAL OF INORGANIC CHEMISTRY(27),3210-3217.
MLA	Gan, Jie,et al."Mechanistic Understanding of Size-Dependent Oxygen Reduction Activity and Selectivity over Pt/CNT Nanocatalysts".EUROPEAN JOURNAL OF INORGANIC CHEMISTRY .27(2019):3210-3217.