磁性材料Fe3S4/Bi2S3的合成及其对水体中六价铬的光催化还原作用
Synthesis of Magnetic Fe3S4/Bi2S3 for Photocatalytic Reduction of Hexavalent Chromium in Water
DOI: 10.12677/MS.2020.1011109, PDF,   
作者: 陶 雄, 胡晓武, 陈 嵘, 高 洪*：武汉工程大学化学与环境工程学院，绿色化工过程教育部重点实验室，新型反应器与绿色化学工艺湖北省重点实验室，湖北 武汉
关键词: 硫化铋；四硫化三铁；六价铬；光催化还原；Bi2S3； Fe3S4； Hexavalent Chromium； Photoreduction
摘要: 本文为了提升Bi2S3粉体光催化材料在水体中对Cr(VI)的去除能力，将其与磁性材料Fe3S4进行复合，采用一步溶剂热法合成了Fe3S4/Bi2S3磁性光催化材料。并对合成的样品进行了X射线粉末衍射以及物理吸附仪分析，发现通过改变合成过程中Fe3+与Bi3+的配比可以调控Fe3S4/Bi2S3中的Fe3S4的含量。当合成过程中Fe3+与Bi3+的比例为1:2时，所得到的样品中的Fe3S4含量最少，但是其具有磁性以及最大的比表面积，同时其对Cr(VI)的光催化还原效果也最佳。此外，Fe3S4/Bi2S3在酸性条件下具有最佳的光催化还原Cr(VI)的效果。但是，Fe3S4/Bi2S3对Cr(VI)的光催化稳定性还有待提升。
Abstract: In this work, Fe3S4/Bi2S3 magnetic photocatalytic material was synthesized by one-step solvothermal method to improve the Cr(VI) photoreduction performance. The synthesized samples were analyzed by powder X-ray diffraction and physical adsorption apparatus. It was found that the content of Fe3S4 in Fe3S4/Bi2S3 could be regulated by changing the ratio of Fe3+ and Bi3+ in the synthesis process. When the ratio of Fe3+ to Bi3+ was 1:2, the content of Fe3S4 in the Fe3S4/Bi2S3 was the least, but it exhibited magnetic properties and the largest specific surface area, and the photocatalytic reduction effect of Cr(VI) was also the best. At the same time, Fe3S4/Bi2S3 had the best photocatalytic reduction effect of Cr(VI) under acidic conditions. But, its stability has yet to be improved.
文章引用：陶雄, 胡晓武, 陈嵘, 高洪. 磁性材料Fe3S4/Bi2S3的合成及其对水体中六价铬的光催化还原作用[J]. 材料科学, 2020, 10(11): 906-915. https://doi.org/10.12677/MS.2020.1011109

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