摘要
采用水热法制备了铜修饰钒酸铋/膨润土(Cu-BiVO_4/BTT)复合材料,借助X射线衍射(XRD)、扫描电子显微镜(SEM)、X射线光电子能谱(XPS)和紫外-可见漫反射吸收光谱(DRS)对其进行表征。XRD分析显示,所制备的催化剂中BiVO_4均保持单斜结构,SEM结果证实了钒酸铋负载到了膨润土上,XPS结果显示Cu元素以CuO形式存在于催化剂表面,DRS结果显示复合材料在可见光区域的吸收增强。研究表明,当Cu与Bi的摩尔比为1.2时,复合材料光催化活性最高,经可见光照射3h,对模型汽油脱硫率达91%。
Copper modified bismuth vanadate/bentonite(Cu-BiVO_(4)/BTT)nanocomposites were hydrothermally synthesized,and characterized by X-ray diffraction(XRD),scanning electron microscopy(SEM),X-ray photoelectron spectroscopy(XPS),and UV-Vis diffuse reflectance spectroscopy(DRS).XRD showed that all the photocatalysts had the same single monoclinic sheelite structure.SEM results confirmed that BiVO_(4)was loaded to BTT.XPS results shown that Cu existed on the surface of the BiVO_(4)catalysts as their stable oxide cation species CuO.DRS results shown the absorption of nanocomposites was enhanced in the visible region.The highest desulfurization rate of model oil can reach 91%under the visible light irradiation for 3 hwhen the molar ratio of Cu to Bi was equal to 1.2.
作者
刘巍
田永胜
崔佳伟
王光辉
Liu Wei;Tian Yongsheng;Cui Jiawei;Wang Guanghui(School of Chemistry and Chemical Engineering,Hubei Key Laboratory of Coal Conversion and New Carbon Material,Wuhan University of Science and Technology,Wuhan 430081)
出处
《化工新型材料》
CAS
CSCD
北大核心
2021年第2期200-203,共4页
New Chemical Materials
基金
国家自然科学基金(21473126)
湖北省煤转化与新型碳材料重点实验室开放基金(WKDM201705)。
关键词
钒酸铋
膨润土
可见光
光催化脱硫
bismuth vanadate
bentonite
visible light
photocatalytic desulfurization
