文献类型：期刊文献

英文题名：Crystal Facet Engineering on SrTiO3 Enhances Photocatalytic Overall Water Splitting

作者：Zhang, Yang[1];Wu, Xuefeng[1];Wang, Zhi-Hao[2];Peng, Yu[1];Liu, Yuanwei[1];Yang, Shuang[1];Sun, Chenghua[3];Xu, Xiaoxiang[4];Zhang, Xie[2,5];Kang, Jun[6];Wei, Su-Huai[2];Liu, Peng Fei[1];Dai, Sheng[7,8];Yang, Hua Gui[1]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Ultrafine Mat, Minist Educ, Shanghai 200237, Peoples R China;[2]Beijing Computat Sci Res Ctr, Beijing 100193, Peoples R China;[3]Swinburne Univ Technol, Dept Chem & Biotechnol, Fac Sci Engn & Technol, Hawthorn 3122, Australia;[4]Tongji Univ, Sch Chem Sci & Engn, Shanghai Key Lab Chem Assessment & Sustainabil, Shanghai 200092, Peoples R China;[5]Northwestern Polytech Univ, Sch Mat Sci & Engn, Xian 710072, Peoples R China;[6]Beijing Computat Sci Res Ctr, Beijing 100193, Peoples R China;[7]East China Univ Sci & Technol, Sch Chem & Mol Engn, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[8]East China Univ Sci & Technol, Inst Fine Chem, Feringa Nobel Prize Scientist Joint Res Ctr, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China

年份：2024

卷号：146

期号：10

起止页码：6618

外文期刊名：JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

收录：;EI(收录号：20240815609624);WOS:【SCI-EXPANDED(收录号:WOS:001166530200001)】；

基金：This work was financially supported by the National Key Research and Development Program of China (No: 2023YFA1507102), the National Natural Science Foundation of China (51920105003, 22239001, 12088101, 11991060, 52172136, 22376062, and U2230402), the Shanghai Pilot Program for Basic Research (22TQ1400100-12), the Science and Technology Commission of Shanghai Municipality (21DZ1207101 and 22ZR1415700), and the Innovation Program of Shanghai Municipal Education Commission (E00014). The authors also thank the Frontiers Science Center for Materiobiology and Dynamic Chemistry, the crew of the BL14W1 beamline at the Shanghai Synchrotron Radiation Facility (SSRF), and the 1W1B beamline of Beijing Synchrotron Radiation Facility (BSRF) for their constructive assistance with the XAFS measurements and data analyses.

语种：英文

外文关键词：Crystal orientation - Crystallinity - Environmental technology - Morphology - Photocatalytic activity - Recrystallization (metallurgy) - Single crystals - Strontium titanates - Surface morphology

摘要：Single-crystal semiconductor-based photocatalysts exposing unique crystallographic facets show promising applications in energy and environmental technologies; however, crystal facet engineering through solid-state synthesis for photocatalytic overall water splitting is still challenging. Herein, we develop a novel crystal facet engineering strategy through solid-state recrystallization to synthesize uniform SrTiO3 single crystals exposing tailored {111} facets. The presynthesized low-crystalline SrTiO3 precursors enable the formation of well-defined single crystals through kinetically improved crystal structure transformation during solid-state recrystallization process. By employing subtle Al3+ ions as surface morphology modulators, the crystal surface orientation can be precisely tuned to a controlled percentage of {111} facets. The photocatalytic overall water splitting activity increases with the exposure percentage of {111} facets. Owing to the outstanding crystallinity and favorable anisotropic surface structure, the SrTiO3 single crystals with 36.6% of {111} facets lead to a 3-fold enhancement of photocatalytic hydrogen evolution rates up to 1.55 mmolh(-1) in a stoichiometric ratio of 2:1 than thermodynamically stable SrTiO3 enclosed with isotropic {100} facets.