In situ TEM studies of the shape evolution of Pd nanocrystals under oxygen and hydrogen environments at atmospheric pressure

被引：55

作者：

Zhang, Xun ^{[1
,2
]}

Meng, Jun ^{[3
,4
,5
]}

Zhu, Beien ^{[3
,4
]}

Yu, Jian ^{[1
,2
]}

Zou, Shihui ^{[1
,2
]}

Zhang, Ze ^{[1
,2
]}

Gao, Yi ^{[3
,4
]}

Wang, Yong ^{[1
,2
]}

机构：

[1] Zhejiang Univ, Ctr Electron Microscopy, Hangzhou 310027, Zhejiang, Peoples R China

[2] Zhejiang Univ, State Key Lab Silicon Mat, Dept Mat Sci & Engn, Hangzhou 310027, Zhejiang, Peoples R China

[3] Chinese Acad Sci, Shanghai Inst Appl Phys, Div Interfacial Water, Shanghai 201800, Peoples R China

[4] Chinese Acad Sci, Key Lab Interfacial Phys & Technol, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China

[5] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

来源：

CHEMICAL COMMUNICATIONS | 2017年 / 53卷 / 99期

基金：

上海市自然科学基金; 中国国家自然科学基金;

关键词：

CO OXIDATION; ELECTRON-MICROSCOPY; COPPER NANOCRYSTALS; NANOPARTICLES; PALLADIUM; CATALYSTS; SIZE; VISUALIZATION; COMBUSTION; PARTICLES;

D O I：

10.1039/c7cc07649e

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We demonstrate an atomic scale TEM observation of shape evolutions of Pd nanocrystals under oxygen and hydrogen environments at atmospheric pressure. Combined with multi-scale structure reconstruction model calculations, the reshaping mechanism is fully understood.

引用

页码：13213 / 13216

页数：4

共 38 条

[1]

Baldi A, 2014, NAT MATER, V13, P1143, DOI [10.1038/NMAT4086, 10.1038/nmat4086]

[2] Direct Observation of the Reversible Changes of the Morphology of Pt Nanoparticles under Gas Environment [J].

Cabie, M. ;

Giorgio, S. ;

Henry, C. R. ;

Axet, M. Rosa ;

Philippot, K. ;

Chaudret, B. .

JOURNAL OF PHYSICAL CHEMISTRY C, 2010, 114 (05) :2160-2163

[3]

Cargnello M, 2012, SCIENCE, V337, P713, DOI [10.1126/science.1223488, 10.1126/science.1222887]

[4]

Chase M. W., 2016, NIST JANAF THERMOCHE

[5] Catalytic combustion of methane over palladium-based catalysts [J].

Ciuparu, D ;

Lyubovsky, MR ;

Altman, E ;

Pfefferle, LD ;

Datye, A .

CATALYSIS REVIEWS-SCIENCE AND ENGINEERING, 2002, 44 (04) :593-649

[6] Atomic-scale electron microscopy at ambient pressure [J].

Creemer, J. F. ;

Helveg, S. ;

Hoveling, G. H. ;

Ullmann, S. ;

Molenbroek, A. M. ;

Sarro, P. M. ;

Zandbergen, H. W. .

ULTRAMICROSCOPY, 2008, 108 (09) :993-998

[7] Core-shell Pd-Pt nanocubes for the CO oxidation [J].

De Clercq, Astrid ;

Margeat, Olivier ;

Sitja, Georges ;

Henry, Claude R. ;

Giorgio, Suzanne .

JOURNAL OF CATALYSIS, 2016, 336 :33-40

[8] Surface-bonded precursor determines particle size effects for alkene hydrogenation on palladium [J].

Doyle, AM ;

Shaikhutdinov, SK ;

Freund, HJ ;

Freund, J .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2005, 44 (04) :629-631

[9] Influence of ceria on Pd activity for the CO+O2 reaction [J].

Fernández-García, M ;

Martínez-Arias, A ;

Salamanca, LN ;

Coronado, JM ;

Anderson, JA ;

Conesa, JC ;

Soria, J .

JOURNAL OF CATALYSIS, 1999, 187 (02) :474-485

[10]

Fowler RH., 1939, STAT THERMODYNAMICS, P431

← 1 2 3 4 →