Crystal-Plane-Controlled Surface Restructuring and Catalytic Performance of Oxide Nanocrystals

被引:150
作者
Bao, Huizhi [1 ,2 ]
Zhang, Wenhua [3 ]
Hua, Qing [1 ,2 ]
Jiang, Zhiquan [1 ,2 ]
Yang, Jinlong [1 ,2 ]
Huang, Weixin [1 ,2 ]
机构
[1] Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, CAS Key Lab Mat Energy Convers, Hefei 230026, Peoples R China
[2] Univ Sci & Technol China, Dept Chem Phys, Hefei 230026, Peoples R China
[3] Univ Sci & Technol China, Dept Mat Sci & Engn, Hefei 230026, Peoples R China
基金
中国国家自然科学基金;
关键词
Cu2O nanocrystals; nanocatalysis; oxidation; structure-activity relationships; surface chemistry; SHAPE CHANGES; CO OXIDATION; IN-SITU; RECONSTRUCTION; REACTIVITY; MECHANISM;
D O I
10.1002/anie.201103698
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Crystal clear: Uniform Cu 2O nanooctahedra (o-Cu 2O) and nanocubes (c-Cu 2O) undergo surface restructuring during CO oxidation for the in-situ formation of catalytically active CuO thin films to give CuO/o-Cu 2O and CuO/c-Cu 2O, respectively (see picture). The structure and catalytic performance of CuO thin films are controlled by the crystal plane exposed on the underlying Cu 2O nanocrystals. © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
引用
收藏
页码:12294 / 12298
页数:5
相关论文
共 27 条
[1]   Shape-Dependent Reducibility of Cuprous Oxide Nanocrystals [J].
Bao, Huizhi ;
Zhang, Wenhua ;
Shang, Daili ;
Hua, Qing ;
Ma, Yunsheng ;
Jiang, Zhiquan ;
Yang, Jinlong ;
Huang, Weixin .
JOURNAL OF PHYSICAL CHEMISTRY C, 2010, 114 (14) :6676-6680
[2]   Coadsorbate induced reconstruction of a stepped Pt(111) surface by sulfur and CO: A novel surface restructuring mechanism observed by scanning tunneling microscopy [J].
Batteas, JD ;
Dunphy, JC ;
Somorjai, GA ;
Salmeron, M .
PHYSICAL REVIEW LETTERS, 1996, 77 (03) :534-537
[3]   Nanoscale chemical imaging of a working catalyst by scanning transmission X-ray microscopy [J].
de Smit, Emiel ;
Swart, Ingmar ;
Creemer, J. Fredrik ;
Hoveling, Gerard H. ;
Gilles, Mary K. ;
Tyliszczak, Tolek ;
Kooyman, Patricia J. ;
Zandbergen, Henny W. ;
Morin, Cynthia ;
Weckhuysen, Bert M. ;
de Groot, Frank M. F. .
NATURE, 2008, 456 (7219) :222-U39
[4]   AN ALL-ELECTRON NUMERICAL-METHOD FOR SOLVING THE LOCAL DENSITY FUNCTIONAL FOR POLYATOMIC-MOLECULES [J].
DELLEY, B .
JOURNAL OF CHEMICAL PHYSICS, 1990, 92 (01) :508-517
[5]   From molecules to solids with the DMol3 approach [J].
Delley, B .
JOURNAL OF CHEMICAL PHYSICS, 2000, 113 (18) :7756-7764
[6]  
Ertl G., 2008, Handbook of Heterogeneous Catalysis, V1, DOI DOI 10.1002/9783527610044.HETCAT0130
[7]   General insight into CO oxidation: A density functional theory study of the reaction mechanism on platinum oxides [J].
Gong, XQ ;
Raval, R ;
Hu, P .
PHYSICAL REVIEW LETTERS, 2004, 93 (10) :106104-1
[8]   A generalized synchronous transit method for transition state location [J].
Govind, N ;
Petersen, M ;
Fitzgerald, G ;
King-Smith, D ;
Andzelm, J .
COMPUTATIONAL MATERIALS SCIENCE, 2003, 28 (02) :250-258
[9]   Self-limited growth of a thin oxide layer on Rh(111) -: art. no. 126102 [J].
Gustafson, J ;
Mikkelsen, A ;
Borg, M ;
Lundgren, E ;
Köhler, L ;
Kresse, G ;
Schmid, M ;
Varga, P ;
Yuhara, J ;
Torrelles, X ;
Quirós, C ;
Andersen, JN .
PHYSICAL REVIEW LETTERS, 2004, 92 (12) :126102-1
[10]   Atom-resolved imaging of dynamic shape changes in supported copper nanocrystals [J].
Hansen, PL ;
Wagner, JB ;
Helveg, S ;
Rostrup-Nielsen, JR ;
Clausen, BS ;
Topsoe, H .
SCIENCE, 2002, 295 (5562) :2053-2055