| Ag/Bi2WO6复合材料的制备及光催化性能 |
| Preparation and Photocatalytic Properties of Ag/Bi2WO6 Composites |
| 作者 | 单位 | E-mail | | 刘勇 | 南京邮电大学, 有机电子与信息显示国家重点实验室培育基地, 信息材料与纳米技术研究院, 南京 210023 | | | 昝佳慧 | 南京邮电大学, 有机电子与信息显示国家重点实验室培育基地, 信息材料与纳米技术研究院, 南京 210023 | | | 陈莹 | 南京邮电大学, 有机电子与信息显示国家重点实验室培育基地, 信息材料与纳米技术研究院, 南京 210023 | iamyingchen@njupt.edu.cn | | 范曲立 | 南京邮电大学, 有机电子与信息显示国家重点实验室培育基地, 信息材料与纳米技术研究院, 南京 210023 | |
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| 摘要: 采用一步水热合成法制得花球状Bi2WO6和Ag/Bi2WO6光催化剂，借助X射线衍射（XRD）、场发射扫描电子显微镜（FES-EM）、透射电子显微镜（TEM）、X射线光电子能谱分析（XPS）、紫外-可见分光光度法（UV-Vis）等手段对样品进行结构性能表征。模拟日光的条件下，以甲基橙（MO）为降解物，对Bi2WO6和Ag/Bi2WO6的催化活性和机理进行研究。结果表明，相对Bi2WO6，相同条件下Ag/Bi2WO6对MO具有更佳的降解效果，当Ag掺杂量为1%（n/n）时，其降解率（180 min）可达到91.4%，同时一次回收样降解率也达到81%。此外，也对Ag/Bi2WO6复合材料的降解机理做了初步探究。 |
| 关键词: 掺杂Ag 钨酸铋 水热合成 光催化 甲基橙 |
| 基金项目: 中国林科院中央级公益性科研院所基本科研业务费专项资金（No.CAFYBB2017MA016）和南京邮电大学引进人才科研启动基金高水平师资（No.NY218122）资助项目。 |
| Abstract: One-step hydrothermal synthesis was used to prepare spherical Bi2WO6 and Ag/Bi2WO6 photocatalysts, and the properties of the samples were characterized by X-ray diffraction (XRD), field emission scanning electron microscope (FESEM), transmission electron microscope (TEM), X-ray photoelectron spectroscopy (XPS), ultravioletvisible spectrophotometry (UV-Vis) and other means. Under the condition of simulating sunlight, the catalytic activity and mechanism of Bi2WO6 and Ag/Bi2WO6 were studied using methyl orange (MO) as degradation product. The results show that compared with Bi2WO6, Ag/Bi2WO6 has a better degradation effect on MO under the same conditions. When the Ag doping amount was 1%(n/n), the degradation rate (180 min) reached 91.4%, and the degradation rate of the recovered sample was also obtained, which also reached 81%. In addition, a preliminary study of the degradation mechanism of Ag/Bi2WO6 composites was also performed. |
| Keywords: Ag doping Bi2WO6 hydrothermal synthesis method photocatalysis methyl orange |
| 投稿时间：2020-03-06 修订日期：2020-04-25 |
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| 刘勇,昝佳慧,陈莹,范曲立.Ag/Bi2WO6复合材料的制备及光催化性能[J].无机化学学报,2020,36(8):1499-1505. |
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