BiOI/g-C3N4光催化降解甲基橙研究
收稿日期: 2020-10-11
网络出版日期: 2021-04-23
基金资助
国家级大学生创新创业训练计划项目(201912949002);河南省科技攻关项目(192102210139);河南省高等学校青年骨干教师培养计划(2019GGJS252);河南省高等学校重点科研项目(18A150018);郑州师范学院环境催化科研创新团队(702010)
Study on photocatalytic degradation of methyl orange by BiOI/g-C3N4
Received date: 2020-10-11
Online published: 2021-04-23
以三聚氰胺为前驱物采用热聚合法制备了石墨相氮化碳(g-C3N4),并在其表面原位合成了碘氧化铋(BiOI),构筑了石墨相氮化碳-碘氧化铋复合材料。采用X射线衍射仪(XRD)、傅里叶变换红外光谱仪(FT-IR)、紫外可见漫反射仪(UV-Vis-DRS)等对催化剂进行了表征。结果表明,当BiOI与g-C3N4物质的量比为0.5时,BiOI/g-C3N4催化剂具有高分散的BiOI颗粒及适中的禁带宽度,吸附和降解甲基橙性能最佳。回流温度为120 ℃时制备的BiOI/g-C3N4催化剂具有适中的粒径、比表面积和表面羟基浓度,吸附和降解甲基橙性能最佳,且该催化剂具有良好的重复使用性能。
孙海杰 , 刘欣改 , 陈志浩 , 陈凌霞 , 邓亚茹 , 梅洋洋 . BiOI/g-C3N4光催化降解甲基橙研究[J]. 无机盐工业, 2021 , 53(4) : 90 -94 . DOI: 10.11962/1006-4990.2020-0252
Graphite phase carbon nitride(g-C3N4) was prepared by thermal polymerization using melamine as precursor.Then bismuth oxyiodide(BiOI) was in-situ generated on its surface to construct BiOI/g-C3N4 composite.The catalyst was characterized by X-ray diffraction XRD,fourier transform infrared spectroscopy(FT-IR) and ultraviolet visible diffuse reflectance spectroscopy(UV-Vis-DRS).The results showed that when the mass-of-substance of BiOI to g-C3N4 was 0.5,the catalyst of BiOI/g-C3N4 had high dispersion of BiOI particles and moderate band gap and the adsorption and degradation performance of methyl orange was the best.The catalyst of BiOI/g-C3N4 prepared at reflux temperature of 120 ℃ had moderate particle size,specific surface area and surface hydroxyl concentration and the best adsorption and degradation performance of methyl orange.In addition,the catalyst had good recyclability.
Key words: BiOI; g-C3N4; photocatalysis; methyl orange
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