In situ atomic-scale studies of thermal stability and surface reconstruction of ZnO nanowires based Pd nanocatalysts

doi:10.1016/j.matdes.2021.109947

CORC > 金属研究所 > 中国科学院金属研究所

	In situ atomic-scale studies of thermal stability and surface reconstruction of ZnO nanowires based Pd nanocatalysts
	Ying, Zhehan 1,2,3; Diao, Jiangyong 4; Wang, Shi 1,2,3; Cai, Xiangbin 1,2,3; Cai, Yuan 1,2; Liu, Hongyang 4; Wang, Ning 1,2,3
刊名	MATERIALS & DESIGN
	2021-11-01
卷号	209 页码:8
关键词	In-situ TEM Nanocatalysts Ripening dynamics Thermal stability Encapsulation behavior
ISSN号	0264-1275
DOI	10.1016/j.matdes.2021.109947
通讯作者	Liu, Hongyang(liuhy@imr.ac.cn) ; Wang, Ning(phwang@ust.hk)
英文摘要	As innovative nanostructured catalysts, palladium nanoparticles supported on carbon-coated zinc oxide nanowires (PdNPs/C&ZnO-NWs) are widely applied in industrial thermal catalysis, and therefore the realtime insights into their thermal stability and microstructural reconstruction at thermal reaction conditions will greatly extend our knowledge of their physicochemical properties and provide valuable guidance for the applications and designs of future nanocatalysts. The in-situ transmission electron microscopy (TEM) studies revealed the high-temperature resistance to PdNPs aggregations with aids of carbon-coated low-dimensional nanostructures C&ZnO-NWs and elucidated ripening dynamics of PdNPs and the surface reconstruction of C&ZnO-NWs. The operando analysis of PdNPs/C&ZnO-NWs was executed in real-time under working-temperature situations. The aggregations of PdNPs were not observed until reaching a high working temperature of 300 degrees C and carbon-coated layers could functionally prevent PdNPs from sintering even when ZnO-NWs experienced melting at 500 degrees C. The time-lapsed TEM investigation proved that the ripening dynamics and time-dependent revolution of PdNPs size are in accordance with the Ostwald ripening process. The subsequent atomic-scale observation revealed the surface reconstruction of ZnO-NWs in the form of ZnO encapsulation over PdNPs and carbon-coated layers during the thermal process, which showed the microscopic evidence of potential deactivation of ZnONW-based nanocatalysts in thermal reactions. (c) 2021 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
资助项目	Research Grants Council of Hong Kong[16306818] ; RGC-NSFC[N_HKUST624/19] ; National Key R&D Program of China[2016YFA0204100] ; National Natural Science Foundation of China[91845201] ; National Natural Science Foundation of China[21961160722] ; National Natural Science Foundation of China[22072162] ; Liaoning Revitalization Talents Program[XLYC1907055] ; Guangxi Key Laboratory of Information Materials Guilin University of Electronic Technology[191005-K] ; Sinopec China
WOS研究方向	Materials Science
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000697472400003
资助机构	Research Grants Council of Hong Kong ; RGC-NSFC ; National Key R&D Program of China ; National Natural Science Foundation of China ; Liaoning Revitalization Talents Program ; Guangxi Key Laboratory of Information Materials Guilin University of Electronic Technology ; Sinopec China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/167045]
专题	金属研究所_中国科学院金属研究所
通讯作者	Liu, Hongyang; Wang, Ning
作者单位	1.Hong Kong Univ Sci & Technol, Dept Phys, Kowloon, Hong Kong, Peoples R China 2.Hong Kong Univ Sci & Technol, Ctr Quantum Mat, Kowloon, Hong Kong, Peoples R China 3.Hong Kong Univ Sci & Technol, William Mong Inst Nano Sci & Technol, Kowloon, Hong Kong, Peoples R China 4.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Ying, Zhehan,Diao, Jiangyong,Wang, Shi,et al. In situ atomic-scale studies of thermal stability and surface reconstruction of ZnO nanowires based Pd nanocatalysts[J]. MATERIALS & DESIGN,2021,209:8.
APA	Ying, Zhehan.,Diao, Jiangyong.,Wang, Shi.,Cai, Xiangbin.,Cai, Yuan.,...&Wang, Ning.(2021).In situ atomic-scale studies of thermal stability and surface reconstruction of ZnO nanowires based Pd nanocatalysts.MATERIALS & DESIGN,209,8.
MLA	Ying, Zhehan,et al."In situ atomic-scale studies of thermal stability and surface reconstruction of ZnO nanowires based Pd nanocatalysts".MATERIALS & DESIGN 209(2021):8.