科学研究

SiO2掺杂BiVO4光催化降解刚果红的研究

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  • 1.东北林业大学化学化工与资源利用学院,哈尔滨150040;
    2.普渡大学戴维森化工学院,印第安纳州西拉法叶47906
张卓煜(1998-),男,硕士研究生,主要从事光催化水处理。

收稿日期: 2020-01-10

  修回日期: 2021-02-01

  网络出版日期: 2021-05-07

基金资助

中央高校基本科研业务费项目(2572015CB23);中国博士后科研项目(2014 M561312);黑龙江省博士后科研项目(LBH-Z14014);哈尔滨市科技局科研项目(2015RQQXJ063);东北林业大学大学生创新实验项目(201810225104)

Photocatalytic degradation of Congo red using SiO2 doping BiVO4

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  • 1. College of Chemistry,Chemical Engineering and Resource Utilization,Northeast Forestry University,Haerbin150040;
    2. Davidson School of Chemical Engineering,Purdue University, West Lafayette 47906,Indiana

Received date: 2020-01-10

  Revised date: 2021-02-01

  Online published: 2021-05-07

摘要

采用柠檬酸络合溶胶-凝胶法,以稻谷壳为模板和Si源制备SiO2-BiVO4光催化剂,结合SEM、XRD等手段对其进行表征。考察了源物质物质的量之比、烧结温度、降解时间、起始溶液浓度、催化剂用量、初始pH和反应温度等因素对光催化降解刚果红脱色率的影响。结果表明,在源物质物质的量之比为1∶1,烧结温度为450℃,染料初始浓度为30mg/L,初始pH为3.0,催化剂用量0.3g/L,光照35℃恒温反应90min时,光催化降解刚果红溶液的脱色率可达到92.82%,脱色反应动力学方程符合准一级反应。

本文引用格式

张祚煜, 杨佳林, 李卓豪, 陈秀婷, 方涛 . SiO2掺杂BiVO4光催化降解刚果红的研究[J]. 化工新型材料, 2021 , 49(4) : 212 -216 . DOI: 10.19817/j.cnki.issn1006-3536.2021.04.046

Abstract

SiO2-BiVO4 photocatalyst was prepared by citric acid complex sol-gel method,and characterized by SEM and XRD methods.The effects of source material molar ratio,sintering temperature,degradation time,initial solution concentration,catalyst dosage,initial pH and reaction temperature on the decolorization rate of Congo red were investigated.The results showed that the decolorization rate of the photocatalytic degradation of Congo red solution could reach 92.82% at the source material ratio of 1∶1,sintering temperature of 450℃,initial dye concentration of 30mg/L,initial pH of 3.0,catalyst dosage of 0.3g/L and constant temperature reaction at 35℃ for 90min.The kinetic equation of decolorization reaction accorded with pseudo first order reaction.

参考文献

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