Solvothermal Synthesis and Photoreactivity of Anatase TiO2 Nanosheets with Dominant {001} Facets

被引：1196

作者：

Yang, Hua Gui ^{[1
,4
]}

Liu, Gang ^{[1
,5
]}

Qiao, Shi Zhang ^{[1
]}

Sun, Cheng Hua ^{[1
,2
]}

Jin, Yong Gang ^{[1
]}

Smith, Sean Campbell ^{[1
,2
]}

Zou, Jin ^{[3
]}

Cheng, Hui Ming ^{[5
]}

Lu, Gao Qing ^{[1
]}

机构：

[1] Univ Queensland, ARC Ctr Exlcellence Funct Nanomat, Ctr Computat Mol Sci, Brisbane, Qld 4072, Australia

[2] Univ Queensland, Ctr Computat Mol Sci, Brisbane, Qld 4072, Australia

[3] Univ Queensland, Ctr Microscopy & Microanal, Sch Engn, Brisbane, Qld 4072, Australia

[4] E China Univ Sci & Technol, Sch Mat Sci & Engn, Minist Educ, Key Lab Ultrafine Mat, Shanghai 200237, Peoples R China

[5] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2009年 / 131卷 / 11期

基金：

澳大利亚研究理事会;

关键词：

SHAPE CONTROL; SEMICONDUCTOR; NANOPARTICLES; NANOCRYSTALS; MORPHOLOGY; ENERGY; COSMO; WATER;

D O I：

10.1021/ja808790p

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Owing to wide-ranging industrial applications and fundamental importance, tailored synthesis of well-faceted single crystals of anatase TiO2 With high percentage of reactive facets has attracted much research interest. In this work, high-quality anatase TiO2 single-crystal nanosheets mainly dominated by (001) facets have been prepared by using a water-2-propanol solvothermal synthetic route. The synergistic functions of 2-propanol and HF on the growth of anatase TiO2 single-crystal nanosheets were studied by first-principle theoretical calculations, revealing that the addition of 2-propanol can strengthen the stabilization effect associated with fluorine adsorption over (001) surface and thus stimulate its preferred growth. By measuring the (OH)-O-center dot species with terephthalic acid scavenger, the as-prepared anatase TiO2 single-crystal nanosheets having 64% {001} facets show superior photoreactivity (more than 5 times), compared to P25 as a benchmarking material.

引用

页码：4078 / 4083

页数：6

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