Journal
INORGANIC CHEMISTRY COMMUNICATIONS
Volume 121, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.inoche.2020.108192
Keywords
Bi2WO6; Heterojunctions; Ionic liquid; Photocatalytic performance; S-scheme
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Funding
- National Natural Science Foundation of China [21777168]
- program of Science and Technology Department of Sichuan Province, China [2019YJ0457, 2019ZYZF0069]
- Project of Zigong City, China [2018YYJC10]
- Opening Project of Jiangsu Key Laboratory for Environment Functional Materials, China [SJHG1805]
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In this study, BiOI/Bi2WO6 heterojunctions were in-situ prepared by a hydrothermal routine with the aid of ionic liquid N-butyl pyridine iodized salt ([Epy]I). The BiOI/Bi2WO6 composites were studied by a series of char-acterization methods. The results manifest that BiOI/Bi2WO6 heterojunctions were in-situ constructed, proven by high-resolution transmission electron microscopy (HRTEM) and energy dispersive spectroscopy (EDS) char-acterization. Construction of BiOI/Bi2WO6 heterojunctions dramatically facilitates the separation of photo excited carriers due to the interfacial electric field between BiOI and Bi2WO6. All the composites display higher sunlight-driven photocatalytic activity than the bare Bi2WO6 benefited from promoted separation of photo induced carriers. The BiOI/Bi2WO6 heterojunctions hold excellent stability. An S-scheme was discussed to elaborate the separation and transfer of photogenerated carriers of BiOI/Bi2WO6 heterojunctions.
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