文献类型：期刊文献

英文题名：Al3+-Dependent Anisotropic Facet Tailoring on SrTiO3 Single Crystal for Photocatalytic Overall Water Splitting

作者：Zhang, Yang[1];Wang, Zhi-Hao[2];Li, Wenbo[3,4];Ding, Peng Cheng[1];Wang, Meng Min[1];Tang, Yu Yang[1];Lin, Hao Yang[1];Peng, Yu[1];Wang, Meng Yi[1];Zheng, Zhaoke[5];Yang, Shuang[1];Dai, Sheng[3,4];Zhang, Xie[6];Liu, Peng Fei[1];Yang, Hua Gui[1]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Ultrafine Mat, Minist Educ, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]Beijing Computat Sci Res Ctr, Beijing 100193, Peoples R China;[3]East China Univ Sci & Technol, Sch Chem & Mol Engn, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[4]East China Univ Sci & Technol, Feringa Nobel Prize Scientist Joint Res Ctr, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China;[5]Shandong Univ, State Key Lab Crystal Mat, Jinan 250100, Peoples R China;[6]Northwestern Polytech Univ, Sch Mat Sci & Engn, Xian 710072, Peoples R China

年份：2025

卷号：64

期号：30

外文期刊名：ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

收录：;EI(收录号：20252318551931);WOS:【SCI-EXPANDED(收录号:WOS:001499917400001)】；

基金：This work was financially supported by the National Key Research and Development Program of China (No: 2023YFA1507102, 2024YFF0506203), the National Natural Science Foundation of China (22239001 and 22379043), the Shanghai Pilot Program for Basic Research Science and Technology Commission of Shanghai Municipality (22TQ1400100-12), and the Science and Technology Commission of Shanghai Municipality (23520710700). The authors also thank the Frontiers Science Center for Materiobiology and Dynamic Chemistry.

语种：英文

外文关键词：Al-doping; Anisotropic structure; Crystal facet; Photocatalytic overall water splitting; SrTiO3 single crystal

摘要：Controllable fabrication of single-crystal metal oxide is of paramount importance for advanced photo(electro)catalytic applications, but achieving nonequilibrium crystal shapes with tailored facets through molten salt synthesis still remains a challenge. Herein, we systematically explored the effect of Al3+ concentration in tailoring crystal facets of SrTiO3 single crystals and developed a one-step molten salt strategy for engineering anisotropic structures by using miscible AlCl3 as Al3+ additive. By progressively increasing Al3+ concentration, a series of high-quality SrTiO3 single crystals exposing {100}, {111}, and {110} facets were sequentially synthesized. Theoretical calculations reveal an Al-doping stabilized {111} surface reconstruction and provide further atomistic insights into the surface structural evolution with Wulff constructions as Al3+ concentration increases. Experimental results demonstrate that the anisotropic facets dominate the efficient charge separation for the enhanced photocatalytic overall water splitting activity. Consequently, SrTiO3 single crystals enclosed by well-defined {100} and {111} facets exhibit a remarkable hydrogen evolution rate of 2621.85 mu molh(-1) and an apparent quantum yield value of 50.5% at 350 nm for stoichiometric overall water splitting. This work offers a molten-salt synthetic strategy and valuable insight for preparing facet-controlled single-crystal semiconductors.