IMR OpenIR
Thermal stability, ripening dynamics and coalescing microstructures of reduced graphene oxide-based platinum nanocatalysts: An in-situ TEM study
Ying, Zhehan1,2,3,4; Diao, Jiangyong5; Wang, Shi1,2,3,4; Cai, Xiangbin1,2,3,4; Cai, Yuan1,2; Liu, Hongyang5; Wang, Ning1,2,3,4
Corresponding AuthorLiu, Hongyang(liuhy@imr.ac.cn) ; Wang, Ning(phwang@ust.hk)
2021-12-01
Source PublicationDIAMOND AND RELATED MATERIALS
ISSN0925-9635
Volume120Pages:9
AbstractThe real-time investigations of coarsening process and microstructural transformation are instrumental in elucidating the thermal stability, ripening dynamics and coalescing microstructures of metal nanocatalysts in thermocatalytic reactions. Herein, we conducted an in-situ transmission electron microscopy (TEM) study on reduced graphene oxide-based platinum nanocatalysts (Pt/rGO). The platinum nanoparticles (PtNPs) exhibited superior thermal stability on the rGO flat surface than on the wrinkle one, indicating that improving the surface flatness of graphene-based supports can increase the thermal stability of deposited metal nanocatalysts. The timeresolved analysis demonstrated that the thermal-induced microstructural transformation (graphitization) of the rGO support caused the discrepancy of PtNPs coarsening from the Ostwald ripening model. The in-situ highresolution images further revealed the coalescing microstructures of PtNPs on the graphitized rGO, which validated the previous simulation research by real-time experimental observations.
KeywordHigh resolutions electron microscopy Thermal stability Nanostructures Amorphous carbon Nanoparticles
Funding OrganizationHong Kong Branch of South Marine Science and Engineering Guangdong Laboratory ; 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
DOI10.1016/j.diamond.2021.108690
Indexed BySCI
Language英语
Funding ProjectHong Kong Branch of South Marine Science and Engineering Guangdong Laboratory[SMSEGL20SC01] ; 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 Research AreaMaterials Science ; Physics
WOS SubjectMaterials Science, Multidisciplinary ; Materials Science, Coatings & Films ; Physics, Applied ; Physics, Condensed Matter
WOS IDWOS:000733665300002
PublisherELSEVIER SCIENCE SA
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/173633
Collection中国科学院金属研究所
Corresponding AuthorLiu, Hongyang; Wang, Ning
Affiliation1.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, Hong Kong Branch, Southern Marine Sci & Engn Guangdong Lab Guangzho, Kowloon, Clear Water Bay, Hong Kong, Peoples R China
4.Hong Kong Univ Sci & Technol, William Mong Inst Nano Sci & Technol, Kowloon, Hong Kong, Peoples R China
5.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Ying, Zhehan,Diao, Jiangyong,Wang, Shi,et al. Thermal stability, ripening dynamics and coalescing microstructures of reduced graphene oxide-based platinum nanocatalysts: An in-situ TEM study[J]. DIAMOND AND RELATED MATERIALS,2021,120:9.
APA Ying, Zhehan.,Diao, Jiangyong.,Wang, Shi.,Cai, Xiangbin.,Cai, Yuan.,...&Wang, Ning.(2021).Thermal stability, ripening dynamics and coalescing microstructures of reduced graphene oxide-based platinum nanocatalysts: An in-situ TEM study.DIAMOND AND RELATED MATERIALS,120,9.
MLA Ying, Zhehan,et al."Thermal stability, ripening dynamics and coalescing microstructures of reduced graphene oxide-based platinum nanocatalysts: An in-situ TEM study".DIAMOND AND RELATED MATERIALS 120(2021):9.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Ying, Zhehan]'s Articles
[Diao, Jiangyong]'s Articles
[Wang, Shi]'s Articles
Baidu academic
Similar articles in Baidu academic
[Ying, Zhehan]'s Articles
[Diao, Jiangyong]'s Articles
[Wang, Shi]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Ying, Zhehan]'s Articles
[Diao, Jiangyong]'s Articles
[Wang, Shi]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.