ZnO/BiOI微球的合成及其光催化性能
Synthesis and Photocatalytic Characterization of ZnO/BiOI Microspheres
作者单位E-mail
王元有 扬州工业职业技术学院, 扬州 225127 wangyy@ypi.edu.cn 
龚爱琴 扬州工业职业技术学院, 扬州 225127  
余文华 扬州工业职业技术学院, 扬州 225127  
摘要: 通过一步溶剂热法合成ZnO/BiOI纳米复合材料,在Bi(NO33·6H2O、KI、ZnO和乙二醇(EG)溶剂中,制备出的样品尺寸和形貌采用X射线粉末衍射(XRD)、场发射扫描电镜(FESEM)、高分辨透射电镜(HRTEM)、紫外-可见漫反射光谱(DRS)、X射线光电子能谱(XPS)、N2吸附-脱附等,对实验所得产物的组成、结构及光学性质等进行表征。以染料罗丹明B(RhB)水溶液和气态乙醛作为降解对象,采用BiOI、ZnO/BiOI和ZnO微纳材料作为光催化剂,通过对BiOI、ZnO/BiOI和ZnO微纳材料在可见光下光催化降解染料罗丹明B(RhB)水溶液和气态乙醛,结果表明多孔微纳材料的ZnO/BiOI具有更高的降解效率,实验表明多孔微纳材料的ZnO/BiOI具有更高的氧空位浓度,因此使其催化活性增强,讨论了其可能的催化活性机理。
关键词: ZnO/BiOI纳米复合材料  光催化  乙醛
基金项目: 国家自然科学基金(No.21505118),江苏省自然科学基金(No.BK2150438),江苏省“青蓝工程”(No.2016-15)和扬州工业职业技术学院重点科研项目(No.2016xjzk001)资助。
Abstract: Porous ZnO/BiOI microspheres composed of ultrathin nanosheets were successfully fabricated by an ethylene glycol-assisted solvothermal method, The morphology and size of the as-prepared samples were characterized by X-ray powder diffraction (XRD), field emission scanning electron microscopy(FESEM), high resolution transmission electron microscopy(HRTEM), UV-Vis diffuse reflectance spectra (DRS), X-ray photoelectron spectroscopy (XPS) and N2 adsorpion-desorption measurements. The photocatalytic degradation of RhB aqueous solution shows that the porous ZnO/BiOI microspheres have the highest photodegradation performance with visible light and acetaldehyde (CH3CHO) gas degradation.This finding indicates that the heterojunction effect created between two different semiconductors is of importance in determining the dynamic properties of photogenerated charge transfer and the related photocatalytic properties.
Keywords: Porous ZnO/BiOI microspheres  photocatalytic  acetaldehyde
投稿时间:2016-11-08 修订日期:2016-12-30
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王元有,龚爱琴,余文华.ZnO/BiOI微球的合成及其光催化性能[J].无机化学学报,2017,33(3):509-518.
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