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.

引用

页码：805 / 809

页数：5

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
Arrouvel, C
Digne, M
Breysse, M
Toulhoat, H
Raybaud, P
[J]. JOURNAL OF CATALYSIS, 2004, 222 (01) : 152 - 166
[3] Prediction of TiO2 nanoparticle phase and shape transitions controlled by surface chemistry
Barnard, AS
Curtiss, LA
[J]. NANO LETTERS, 2005, 5 (07) : 1261 - 1266
[4] Predicting the energetics, phase stability, and morphology evolution of faceted and spherical anatase nanocrystals
Barnard, AS
Zapol, P
[J]. 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
Bates, SP
Kresse, G
Gillan, MJ
[J]. 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
Bredow, T
Giordano, L
Cinquini, F
Pacchioni, G
[J]. 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
Diebold, U
[J]. SURFACE SCIENCE REPORTS, 2003, 48 (5-8) : 53 - 229

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