Affiliation:
1. College of Optoelectronic Engineering Chongqing University of Posts and Telecommunications Chongqing 400065 China
2. Key Laboratory of Optoelectronic Technology & Systems (Ministry of Education) College of Optoelectronic Engineering Chongqing University Chongqing 400044 China
3. School of Materials Science and Engineering Zhengzhou University Zhengzhou 450001 China
Abstract
AbstractLead halide perovskite materials have great potential for photocatalytic reaction due to their low fabrication cost, unique optical absorption coefficient, and suitable band structures. However, the main problems are the toxicity and instability of the lead halide perovskite materials. Therefore, a facile synthetic method is used to prepare lead‐free environmentally friendly Cs2TiX6(X = Cl, Cl0.5Br0.5, Br) perovskite materials. Their structural and optical characteristics are systematically investigated. The band gaps of the produced samples are illustrated to be from 1.87 to 2.73 eV. Moreover, these materials can keep high stability in harsh environments such as illumination and heating, and the Cs2Ti(Cl0.5Br0.5)6 microcrystals demonstrate the yields of 176 µmol g−1 for CO and 78.9 µmol g−1 for CH4 after light irradiation for 3 h, which is of the first report of Ti‐based perovskite photocatalysts. This finding demonstrates that the Ti‐based perovskites will create opportunities for photocatalytic applications, which may offer a new idea to construct low‐cost, eco‐friendly, and bio‐friendly photocatalysts.
Funder
National Key Research and Development Program of China
National Natural Science Foundation of China
Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences
Natural Science Foundation of Chongqing
Subject
Biomaterials,Biotechnology,General Materials Science,General Chemistry
Cited by
9 articles.
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