文献类型：期刊文献

英文题名：Ultra-thin anatase TiO₂ nanosheets dominated with {001} facets: thickness-controlled synthesis, growth mechanism and water-splitting properties

作者：Yang, Xiao Hua[1];Li, Zhen[2,3];Liu, Gang[4];Xing, Jun[1];Sun, Chenghua[2,3];Yang, Hua Gui[1];Li, Chunzhong[1]

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Minist Educ, Key Lab Ultrafine Mat, Shanghai 200237, Peoples R China;[2]Univ Queensland, ARC Ctr Excellence Funct Nanomat, Sch Engn, Brisbane, Qld 4072, Australia;[3]Australian Inst Bioengn & Nanotechnol, Brisbane, Qld 4072, Australia;[4]Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China

年份：2011

卷号：13

期号：5

起止页码：1378

外文期刊名：CRYSTENGCOMM

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000287458500018)】；

基金：This work was financially supported by Scientific Research Foundation of East China University of Science and Technology (YD0142125), Pujiang Talents Programme of Science and Technology Commission of Shanghai Municipality (09PJ1402800), Shuguang Talents Programme of Education Commission of Shanghai Municipality (09SG27), National Natural Science Foundation of China (20925621, 20973059, 91022023, 21076076), Fundamental Research Funds for the Central Universities (WJ0913001), and Program for New Century Excellent Talents in University (NCET-09-0347).

语种：英文

摘要：Ultra-thin anatase TiO2 nanosheets with dominant {001} facets (similar to 82%) and controllable thickness (1.6-2.7 nm) were synthesized by using a modified one-pot hydrothermal route. As a morphology controlling agent, the concentration of hydrofluoric acid has a significant impact on the thickness of the as-synthesized TiO2 nanosheets. In addition, according to the XRD patterns and TEM images of the products on different reaction stages, the growth process of TiO2 nanosheets was clarified for the first time. We further measured the efficiency for H-2 evolution of the ultra-thin anatase TiO2 nanosheets loaded with 1 wt% Pt from photochemical reduction of water in the presence of methanol as a scavenger. The TiO2 nanosheets exhibited a H-2 evolution rate as high as 7381 mu mol h(-1) g(-1) under UV-vis light irradiation, attributing to their exposed reactive {001} facets and high crystallinity.