| 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 Author | Liu, Hongyang(liuhy@imr.ac.cn) ; Wang, Ning(phwang@ust.hk) |
| 2021-12-01 | |
| Source Publication | DIAMOND AND RELATED MATERIALS
 |
| ISSN | 0925-9635 |
| Volume | 120Pages:9 |
| Abstract | The 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. |
| Keyword | High resolutions electron microscopy Thermal stability Nanostructures Amorphous carbon Nanoparticles |
| Funding Organization | Hong 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 |
| DOI | 10.1016/j.diamond.2021.108690 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | Hong 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 Area | Materials Science ; Physics |
| WOS Subject | Materials Science, Multidisciplinary ; Materials Science, Coatings & Films ; Physics, Applied ; Physics, Condensed Matter |
| WOS ID | WOS:000733665300002 |
| Publisher | ELSEVIER SCIENCE SA |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/173633 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Liu, Hongyang; Wang, Ning |
| Affiliation | 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, 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. |
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