Z型CdIn2S4/ZnSnO3异质结的构筑及其光催化产氢性能
Construction of Z-scheme CdIn2S4/ZnSnO3 heterostructure for photocatalytic hydrogen production performance
作者单位E-mail
王传涛 延安大学化学与化工学院, 陕西省化学反应工程重点实验室, 延安 716000  
王英仙 延安大学化学与化工学院, 陕西省化学反应工程重点实验室, 延安 716000  
郭莉 延安大学化学与化工学院, 陕西省化学反应工程重点实验室, 延安 716000  
杨志雄 延安大学化学与化工学院, 陕西省化学反应工程重点实验室, 延安 716000  
周思凡 延安大学化学与化工学院, 陕西省化学反应工程重点实验室, 延安 716000  
杜锐 延安大学化学与化工学院, 陕西省化学反应工程重点实验室, 延安 716000  
王丹军 延安大学化学与化工学院, 陕西省化学反应工程重点实验室, 延安 716000 wangdj761118@163.com 
摘要: 通过高温煅烧ZnSn(OH)6前驱体制备了双壳中空立方体结构的ZnSnO3(ZSO),进而采用水热法将CdIn2S4(CIS)纳米晶包裹在ZSO表面,成功制备了CdIn2S4/ZnSnO3(CIS/ZSO)异质催化剂。活性产氢实验结果表明,CIS、ZSO物质的量之比为12%时制备的12% CIS/ZSO具有优异的光催化产氢性能,在3 h内产氢量为1 676.48 μmol·g-1,分别是ZSO和CIS的12倍和8倍。ZSO光催化析氢反应活性的增强归因于CIS/ZSO异质结构的成功构建,异质界面的形成显著提高了光生电子/空穴对的分离效率,降低了其复合率。通过对电荷转移路径的分析,提出了可能的反应机理。
关键词: Z型  CdIn2S4/ZnSnO3异质结  光催化水分解  氢气
基金项目: 国家自然科学基金(No.22168040,22162025)、陕西省科技厅项目(No.2022JM-062)和陕西省大学生创新创业计划项目(No.S202210719056)资助。
Abstract: The double shell hollow cube structural ZnSnO3(ZSO) was prepared by high-temperature calcination with ZnSn(OH)6 as a precursor. Then, the CdIn2S4 (CIS) nanocrystalline was wrapped on the surface of ZSO by a hydrothermal method. Thus CdIn2S4/ZnSnO3 (CIS/ZSO) heterostructures were successfully prepared. The photocatalytic hydrogen evolution reaction (HER) result indicated that the as-prepared 12% CIS/ZSO heterostructure obtained with the molar ratio of CIS to ZSO of 12% exhibited excellent photocatalytic H2-production activity with the hydrogen yield of 1 676.48 μmol·g-1 for 3 h, about 12 times and 8 times of original ZSO and CIS, respectively. The enhanced activity of the ZSO photocatalytic HER was attributed to the successful construction of the CIS/ZSO heterostructure. The formation of the CIS/ZSO heterostructural interface significantly improved the separation efficiency of photogenerated electron/hole pairs and reduced their recombination rate. Furthermore, the possible reaction mechanism was proposed by analyzing the charge transfer pathway.
Keywords: Z-scheme  CdIn2S4/ZnSnO3 heterostructure  photocatalytic water splitting  hydrogen
投稿时间:2022-09-07 修订日期:2023-06-15
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王传涛,王英仙,郭莉,杨志雄,周思凡,杜锐,王丹军.Z型CdIn2S4/ZnSnO3异质结的构筑及其光催化产氢性能[J].无机化学学报,2023,39(8):1637-1648.
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Support information: 相关附件:   220408_Supporting_Information.pdf