Two-dimensional Sn2Ta2O7 nanosheets as efficient visible lightdriven photocatalysts for hydrogen evolution

作     者：Xiao-Shuai Wang Chao Zhou Run Shi Qin-Qin Liu Tie-Rui Zhang 

作者机构：School of Materials Science and EngineeringJiangsu UniversityZhenjiang 212013China Key Laboratory of Photochemical Conversion and Optoelectronic MaterialsTechnical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190China Center of Materials Science and Optoelectronics EngineeringUniversity of Chinese Academy of SciencesBeijing 100049China 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2019年第38卷第5期

页      面：397-403页

核心收录：

学科分类：0806[工学-冶金工程] 08[工学] 

基　　金：financially supported by the National Key R&D Program of China (Nos. 2017YFA0206904, 2017YFA0206900 and 2016YFB0600901) the National Natural Science Foundation of China (Nos. 51825205, U1662118, 51772305, 51572270, 21871279 and 21802154) the Strategic Priority Research Program of the Chinese Academy of Sciences (No. XDB17000000) the Beijing Natural Science Foundation (No. 2182078), the Beijing Municipal Science and Technology Project (No. Z181100005118007) the Royal Society-Newton Advanced Fellowship (No. NA170422) the International Partnership Program of Chinese Academy of Sciences (No. GJHZ1819) the K. C. Wong Education Foundation 

主　　题：Sn2Ta2O7 Nanosheets Visible light Photocatalysis Hydrogen evolution 

摘      要：Two-dimensional Sn2Ta2O7 nanosheets with a thickness of^10 nm were successfully prepared through a novel tantalic acid-based solid-state reaction method at reduced *** as-obtained samples were characterized by powder X-ray diffraction(XRD),ultraviolet–visible(UV–Vis)diffuse reflectance spectra,scanning electron microscopy(SEM),transmission electron microscopy(TEM)and Brunauer–Emmett–Teller(BET)*** photocatalytic performance of Sn2 Ta2 O7 nanosheets was evaluated by photocatalytic water splitting for hydrogen evolution under visible light irradiation(k C 400 nm).The Sn2Ta2O7 nanosheets with a large surface area of 25.9 m^2·g^-1 showed higher H2 production activity,which was about 4.4 times higher than that of bulk Sn2 Ta2O7 in lactic acid aqueous solutions using Pt as a *** improved photocatalytic performance mainly benefited from the nanosheet structure,which provided abundant surface active sites and facilitated the photogenerated charge carrier separation *** workmay open up new opportunity to develop novel nanostructured tantalum-based semiconductors with improved catalytic performance for solar energy conversion.