【作者】 胡倩倩； 李建荣； 郝旻汀； 黄小荥；

【Author】 Qian-Qian Hu;Jian-Rong Li;Min-Ting Hao;Xiao-Ying Huang;State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences;

【机构】 中国科学院福建物质结构研究所结构化学国家重点实验室；

【摘要】 化学调控和形貌调整是提高催化剂活性的有效手段^[1]。本文首先通过简单的元素间微波辅助离子热法得到了尺寸约2～3 nm的可溶性In₂S₃前驱体团簇溶液（图a）。随后将钛酸正丁酯加入含有H₂O和团簇溶液的离子液体中,经微波法获得了In₂S₃簇嵌入介孔TiO₂的复合光催化剂（图b）。研究表明,该方法引入In₂S₃不会破坏TiO₂的介孔结构,且会与TiO₂紧密接触加强载流子分离效率,促使仅掺入0.5 wt%In₂S₃的介孔TiO₂的光催化产氢速率可至纯介孔TiO₂的9倍（图c）。更多还原

【Abstract】 Chemical modification and morphology engineering are the most adopted strategies to improve the activity of catalysts. Herein, the soluble In₂S₃ cluster-based precursor with size of 2～3 nm was synthesized by straightforward elemental reaction. Then, a composite with In₂S₃ clusters confined in mesoporous TiO₂ was in situ synthesized by treating tetrabutyl titanate in an ionic liquid containing H₂O and the precursor. The photocatalytic H₂ evolution rate of mesoporous TiO₂ with 0.5 wt% In₂S₃ is 9 times higher than that of pure mesoporous TiO₂, which is probably due to its non-destroyed mesoporous structure and intimate contact between In₂S₃ and TiO₂.更多还原