可控构筑三维花球WO_(3)及其在可见光下降解甲基橙  

Controlled fabrication of three-dimensional of WO_(3) and the degradation of methyl orange under visible light

作　　者：杨思涵 冉建新 韩明雪 齐晨宇 李心宇 曹艳珍[1] 于海霞[1] 董国华[1] 张转芳[1] YANG Sihan;RAN Jianxin;HAN Mingxue;QI Chenyu;LI Xinyu;CAO Yanzhen;YU Haixia;DONG Guohua;ZHANG Zhuanfang(School of Chemistry and Chemical Engineering,Qiqihar University,Qiqihar 161006,China)

机构地区：[1]齐齐哈尔大学化学与化学工程学院,黑龙江齐齐哈尔161006

出　　处：《高师理科学刊》2021年第11期49-54,共6页Journal of Science of Teachers＇College and University

基　　金：国家自然科学基金项目(21776144);黑龙江省大学生创新创业计划项目(202110232082);齐齐哈尔大学创新项目(202010232250)。

摘　　要：在水热条件下合成一个具有三维尺寸的多层次花球状WO_(3).研究不同反应时间对生成的WO_(3)总体形貌的影响,当反应时间为15 h时,合成了具有由纳米线构筑的WO_(3)多层次花球.通过扫描电镜(SEM)、傅里叶红外光谱(FT-IR)、X-射线衍射(XRD)对所合成的WO_(3)结构进行表征,通过紫外漫反射研究其光学性质.结果表明,三维尺寸WO_(3)的禁带宽度为2.9 eV,是一种优异的半导体材料.在对甲基橙(MO)光催化降解研究过程中表明,所生成的三维花球WO_(3)在可见光激发下具有很好的光催化能力,光照120 min后降解率达到91.2%.A hierarchical WO_(3) with three-dimensional ball-flower was synthesized under hydrothermal method.The effect of different reaction time on the morphology of WO_(3) was studied.When the reaction time was 15 h,the hierarchical flower sphere WO_(3) with nanowires was synthesized.The structure characterizations of as-prepared WO_(3) were carried out by scanning electron microscope(SEM),Fourier transform infrared(FT-IR)and ray diffraction(XRD).The optical properties of the WO_(3) were studied by UV diffuse reflection.The results showed that WO_(3) with three dimensional was a semiconductor material with a band gap width of 2.9 eV,which is an excellent semiconductor material.During the study of photocatalytic degradation for Methyl orange(MO),it is shown that the WO_(3) with three-dimensional ball-flowers exhibit the high visible-light-driven activity.The degradation rate reached 91.2%after 120 min of illumination.

关 键 词：三维尺寸WO_(3) 水热反应 光催化降解 甲基橙 

分 类 号：O69[理学—化学]