文献类型：期刊文献

英文题名：Cubic AgBiS₂ Powder Prepared Using a Facile Reflux Method for Photocatalytic Degradation of Dyes

作者：Wang, Wenzhen[1,2];Gao, Chengxiong[3];Chen, Yuxing[4];Shen, Tao[3];Dong, Mingrong[3];Yao, Bo[4];Zhu, Yan[1,3]

机构：[1]Shanghai Tech Inst Elect & Informat, Shanghai 201411, Peoples R China;[2]Shanghai Univ, Sch Mat Sci & Engn, Shanghai 200444, Peoples R China;[3]Kunming Univ Sci & Technol, Fac Mat Sci & Engn, Kunming 650093, Peoples R China;[4]Shaoxing Univ, Zhejiang Engn Res Ctr MEMS, Shaoxing 312000, Peoples R China

年份：2023

卷号：14

期号：12

外文期刊名：MICROMACHINES

收录：SCI-EXPANDED(收录号：WOS:001132742600001)、、WOS

基金：No Statement Available

语种：英文

外文关键词：AgBiS2; reflux method; photocatalytic degradation

外文摘要：The ternary chalcogenide AgBiS2 has attracted widespread attention in the field of photovoltaic and photoelectric devices due to its excellent properties. In this study, AgBiS2 powders with an average diameter of 200 nm were prepared via a simple and convenient reflux method from silver acetate, bismuth nitrate pentahydrate, and n-dodecyl mercaptan. The adjustment of the ratios of Ag:Bi:S raw materials and of the reaction temperatures were carried out to investigate the significance of the synthesis conditions toward the composition of the as-synthesized AgBiS2. The results of XRD indicated that the powders synthesized at a ratio of 1.05:1:2.1 and a synthesis temperature of 225 degrees C have the lowest bismuth content and the highest purity. The synthesized AgBiS2 crystallizes in a rock salt type structure with the cubic Fm (3) over barm space group. Scanning and transmission electron microscopy, thermogravimetric analysis, ultraviolet-visible-near-infrared spectra, and photocatalytic degradation performance were employed to characterize the as-synthesized samples. The results demonstrated that AgBiS2 powders display thermal stability; strong absorption in the ultraviolet, visible, and partial infrared regions; and an optical bandgap of 0.98 eV. The obtained AgBiS2 powders also have a good degradation effect on the methylene blue solution with a degradation efficiency of 58.61% and a rate constant of 0.0034 min(-1), indicating that it is an efficient strategy for sewage degradation to reduce water pollution.