Visualizing Gas Molecules Interacting with Supported Nanoparticulate Catalysts at Reaction Conditions

被引：368

作者：

Yoshida, Hideto ^{[1
]}

Kuwauchi, Yasufumi ^{[2
]}

Jinschek, Joerg R. ^{[3
]}

Sun, Keju ^{[4
]}

Tanaka, Shingo ^{[4
]}

Kohyama, Masanori ^{[4
]}

Shimada, Satoshi ^{[5
]}

Haruta, Masatake ^{[5
]}

Takeda, Seiji ^{[1
]}

机构：

[1] Osaka Univ, Inst Sci & Ind Res, Osaka 5670047, Japan

[2] Osaka Univ, Grad Sch Sci, Dept Phys, Toyonaka, Osaka 5600043, Japan

[3] FEI Co, NL-5651 GG Eindhoven, Netherlands

[4] Natl Inst Adv Ind Sci & Technol, Res Inst Ubiquitous Energy Devices, Ikeda, Osaka 5638577, Japan

[5] Tokyo Metropolitan Univ, Grad Sch Urban Environm Sci, Dept Appl Chem, Tokyo 1920397, Japan

来源：

SCIENCE | 2012年 / 335卷 / 6066期

关键词：

TRANSMISSION ELECTRON-MICROSCOPY; CO OXIDATION; GOLD; SURFACE; TEMPERATURE; AU/TIO2; PERFORMANCE; MECHANISM; BEHAVIOR; AU(111);

D O I：

10.1126/science.1213194

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Understanding how molecules can restructure the surfaces of heterogeneous catalysts under reaction conditions requires methods that can visualize atoms in real space and time. We applied a newly developed aberration-corrected environmental transmission electron microscopy to show that adsorbed carbon monoxide (CO) molecules caused the {100} facets of a gold nanoparticle to reconstruct during CO oxidation at room temperature. The CO molecules adsorbed at the on-top sites of gold atoms in the reconstructed surface, and the energetic favorability of this reconstructed structure was confirmed by ab initio calculations and image simulations. This atomic-scale visualizing method can be applied to help elucidate reaction mechanisms in heterogeneous catalysis.

引用

页码：317 / 319

页数：3

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