Direct measurement of size, three-dimensional shape, and specific surface area of anatase nanocrystals

被引：44
作者：
Feldhoff, Armin
Mendive, Cecilia
Bredow, Thomas
Bahnemann, Detlef
机构：
[1] Leibniz Univ Hannover, Inst Phys Chem & Elektrochem, D-30167 Hannover, Germany
[2] Leibniz Univ Hannover, Inst Tech Chem, D-30167 Hannover, Germany
[3] Univ Bonn, Inst Phys & Theoret Chem, D-53115 Bonn, Germany
来源：
CHEMPHYSCHEM | 2007年 / 8卷 / 06期
关键词：
crystals; electron microscopy; nanostructures; surface; oxides;
D O I：
10.1002/cphc.200700084
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
(Figure Presented) Little is different: The specific surface areas of individual crystal facets on anatase nanocrystals (see picture) are estimated quantitatively by the combination of transmission electron microscope measurements with a Wulff-type construction of the three-dimensional shape. The results demonstrate that the crystal facets that are most abundant for macroscopic crystals are not necessarily those that predominate in nanocrystals. © 2007 Wiley-VCH Verlag GmbH & Co. KGaA.
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收藏
页码：805 / 809
页数：5
相关论文
共 36 条
[1]  
ARISTOTLE, NICHOMACHEAN ETHICS, V350
[2]   Effects of morphology on surface hydroxyl concentration:: a DFT comparison of anatase-TiO2 and γ-alumina catalytic supports [J].
Arrouvel, C ;
Digne, M ;
Breysse, M ;
Toulhoat, H ;
Raybaud, P .
JOURNAL OF CATALYSIS, 2004, 222 (01) :152-166
[3]   Prediction of TiO2 nanoparticle phase and shape transitions controlled by surface chemistry [J].
Barnard, AS ;
Curtiss, LA .
NANO LETTERS, 2005, 5 (07) :1261-1266
[4]   Predicting the energetics, phase stability, and morphology evolution of faceted and spherical anatase nanocrystals [J].
Barnard, AS ;
Zapol, P .
JOURNAL OF PHYSICAL CHEMISTRY B, 2004, 108 (48) :18435-18440
[5]   A systematic study of the surface energetics and structure of TiO2(110) by first-principles calculations [J].
Bates, SP ;
Kresse, G ;
Gillan, MJ .
SURFACE SCIENCE, 1997, 385 (2-3) :386-394
[6]   Electronic properties of rutile TiO2 ultrathin films:: Odd-even oscillations with the number of layers -: art. no. 035419 [J].
Bredow, T ;
Giordano, L ;
Cinquini, F ;
Pacchioni, G .
PHYSICAL REVIEW B, 2004, 70 (03) :035419-1
[7]  
Chemseddine A, 1999, EUR J INORG CHEM, P235, DOI 10.1002/(SICI)1099-0682(19990202)1999:2<235::AID-EJIC235>3.0.CO
[8]  
2-N
[9]  
Chernov A.A., 1963, CRYSTALLOGR REP+, V7, P728
[10]   The surface science of titanium dioxide [J].
Diebold, U .
SURFACE SCIENCE REPORTS, 2003, 48 (5-8) :53-229
1234