Controllable Synthesis and Photocatalytic Activity of Anatase TiO2 Single Crystals with Exposed {110} Facets

被引：23

作者：

Wu Qian ^{[1
,2
]}

Wu Zhijiao ^{[1
]}

Li Yongliang ^{[2
]}

Gao Hongtao ^{[3
]}

Piao Lingyu ^{[1
]}

Zhang Tianhui ^{[1
]}

Du Lixia ^{[1
]}

机构：

[1] Natl Ctr Nanosci & Technol, Beijing 100190, Peoples R China

[2] Beijing Normal Univ, Analyt & Testing Ctr, Beijing 100875, Peoples R China

[3] Qingdao Univ Sci & Technol, Coll Chem & Mol Engn, Qingdao 266042, Shandong, Peoples R China

来源：

CHINESE JOURNAL OF CATALYSIS | 2012年 / 33卷 / 11期

关键词：

titania; facet with high surface energy; {110} facets; hydrothermal technique; photocatalysis; SURFACE SCIENCE; NANOSHEETS; PERCENTAGE; FILMS;

D O I：

10.1016/S1872-2067(11)60448-8

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Anatase TiO2 single crystals with a high percentage of the high surface energy {110} facets have been successfully synthesized in a simple and economical way using a modified hydrothermal technique in the presence of hydrogen peroxide and hydrofluoric acid. The morphology and structure of the TiO2 single crystals were characterized by X-ray diffraction, scanning electron microscopy, and Raman spectroscopy. The photocatalytic activity of the TiO2 crystals for the degradation of methylene blue dye was investigated by ultraviolet light irradiation. The effects of the amounts of HF and H2O2 on the morphology of TiO2 have been studied. The reaction time and temperature have also been investigated. In the TiO2 single crystals, the {001} and {110} facets are present at the same time. The results indicated that a high yield of single crystals with exposed {110} and {110} facets could be obtained by adjusting the reaction time, reaction temperature, and amounts of HF and H2O2. The anatase TiO2 single crystals with exposed {110} facets showed higher photocatalytic activities than those without.

引用

页码：1743 / 1753

页数：11

共 27 条

[1] A Method for Fabrication of Pyramid-Shaped TiO2 Nanoparticles with a High {001} Facet Percentage [J].

Alivov, Yahya ;

Fan, Z. Y. .

JOURNAL OF PHYSICAL CHEMISTRY C, 2009, 113 (30) :12954-12957

[2] Solid-state dye-sensitized mesoporous TiO2 solar cells with high photon-to-electron conversion efficiencies [J].

Bach, U ;

Lupo, D ;

Comte, P ;

Moser, JE ;

Weissörtel, F ;

Salbeck, J ;

Spreitzer, H ;

Grätzel, M .

NATURE, 1998, 395 (6702) :583-585

[3]

Bahnemann D W., 2002, APPL CATAL B-ENVIRON, V36, P161

[4] Catalytic reforming of methane with carbon dioxide over nickel catalysts .1. Catalyst characterization and activity [J].

Bradford, MCJ ;

Vannice, MA .

APPLIED CATALYSIS A-GENERAL, 1996, 142 (01) :73-96

[5] Gold Nanoparticle-Doped TiO2 Semiconductor Thin Films: Gas Sensing Properties [J].

Buso, Dario ;

Post, Michael ;

Cantalini, Carlo ;

Mulvaney, Paid ;

Martucci, Alessandro .

ADVANCED FUNCTIONAL MATERIALS, 2008, 18 (23) :3843-3849

[6] Constructing Hierarchical Spheres from Large Ultrathin Anatase TiO2 Nanosheets with Nearly 100% Exposed (001) Facets for Fast Reversible Lithium Storage [J].

Chen, Jun Song ;

Tan, Yi Ling ;

Li, Chang Ming ;

Cheah, Yan Ling ;

Luan, Deyan ;

Madhavi, Srinivasan ;

Boey, Freddy Yin Chiang ;

Archer, Lynden A. ;

Lou, Xiong Wen .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2010, 132 (17) :6124-6130

[7] The surface science of titanium dioxide [J].

Diebold, U .

SURFACE SCIENCE REPORTS, 2003, 48 (5-8) :53-229

[8] Dye-sensitized solar cells [J].

Grätzel, M .

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C-PHOTOCHEMISTRY REVIEWS, 2003, 4 (02) :145-153

[9] Structure and energetics of stoichiometric TiO2 anatase surfaces (vol 63, art no 155409, 2001) -: art. no. 119901 [J].

Lazzeri, M ;

Vittadini, A ;

Selloni, A .

PHYSICAL REVIEW B, 2002, 65 (11)

[10] Gas-sensing properties of nanocrystalline TiO2 [J].

Lin, HM ;

Keng, CH ;

Tung, CY .

NANOSTRUCTURED MATERIALS, 1997, 9 (1-8) :747-750

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