木纤维仿生制备铈锆固溶体光催化降解甲基橙  

Photocatalytic Degradation of Methyl Orange by Cerium Zirconium Solid Solution Prepared from Wood Fiber Bionics

作　　者：郭明辉[1] 江宜航 张硕[1] GUO Minghui;JIANG Yihang;ZHANG Shuo(Material Science and Engineering College,Northeast Forestry University,Harbin 150040,China)

机构地区：[1]东北林业大学材料科学与工程学院,哈尔滨150040

出　　处：《森林工程》2021年第5期50-55,74,共7页Forest Engineering

基　　金：国家自然科学基金(31971587);东北林业大学大学生国家级创新训练项目资助(201910225016)。

摘　　要：使用铈锆固溶体催化剂降解甲基橙是当今最有前景的方法之一,开发具有生物结构的光催化剂是目前非常有意义的。本文以木纤维为生物模板合成具有生物结构的铈锆固溶体,通过扫描电镜(SEM)、透射电镜(TEM)、X射线衍射(XRD)、X射线光电子能谱(XPS)及紫外可见分光光度计等对这类具有层次结构生物形态的铈锆固溶体样品的表面及组成的信息、晶体结构、内结合能标准和光催化降解甲基橙速率进行表征。结果证明,该新型光催化剂比未有模板的铈锆固溶体具有更大的比表面积,能极大增强对水中大分子污染物的降解率,最终实现通过光催化的途径降解类似甲基橙等有机污染物。Using cerium zirconium solid solution catalyst to degrade methyl orange is one of the most promising methods at present and the development of catalysts with biological structure is of great significance.In this paper,cerium zirconium solid solution with biological structure was synthesized with wood fiber as biological template.By scanning electron microscopy(SEM),transmission electron microscopy(TEM),X-ray diffraction(XRD),X-ray photoelectron spectroscopy(XPS)and uv-vis spectrophotometer,the surface and composition information,crystal structure,internal binding energy standard and photocatalytic degradation rate of methyl orange of cerium zirconium solid solution samples with hierarchical biological morphology were characterized.The results show that the new catalyst has a larger specific surface area than the untemplated cerium zirconium solid solution,which can greatly enhance the degradation rate of macromolecular pollutants in water,and finally realize the photocatalytic degradation of organic pollutants such as methyl orange.

关 键 词：铈锆固溶体 木纤维仿生 生物结构 光催化 甲基橙 

分 类 号：X524[环境科学与工程—环境工程]