鳞片状Bi2WO6 的制备及其处理盐酸强力霉素的研究  

Preparation of Scale Bi2WO6 and Its Treatment with Doxycycline Hydrochlorid

作　　者：代恒灿 盛贵尚[1] 杨小亮[1] DAI Heng-can;SHENG Gui-shang;YANG Xiao-liang(College of Civil Engineering,Guizhou University,Guiyang 550025,China)

机构地区：[1]贵州大学土木工程学院,贵州贵阳550025

出　　处：《广州化学》2020年第6期24-29,共6页Guangzhou Chemistry

基　　金：贵州大学土木工程一流学科(QYNYL[2017]0013);贵州省科技计划项目(黔科合SY字[2014]3045号、黔科合基础[2018]1125号)。

摘　　要：利用“水热法+磁力搅拌”制备了鳞片状结构的Bi2WO6,并结合XRD、SEM等技术手段对其结晶度和表面微观结构进行了表征;以盐酸强力霉素(DOX)作为目标污染物,通过光催化试验探讨Bi2WO6投加量、污染物初始浓度及溶液pH对目标污染物降解效果的影响;同时采用重复试验验证催化剂的稳定性。结果表明,鳞片状结构的Bi2WO6拥有良好的吸附性和光催化活性。当浓度为20 mg/L、投加量为2.0 g/L时,30 min暗反应对DOX吸附去除率可达64.03%;最佳实验条件下DOX去除率可达96.15%。同时,溶液为中性时处理效果比酸性和碱性条件下要好,通过5次重复实验DOX去除率仍可达到93.4%,说明鳞片状结构的Bi2WO6拥有良好的稳定性。Bi2WO6 with scaly structure was prepared by“hydrothermal method+magnetic stirring”,and its crystallinity and surface microstructure were characterized by XRD,SEM and other technical means.Doxycycline hydrochloride(DOX)was taken as the target pollutant,and the effects of Bi2WO6 dosage,initial concentration of pollutant and pH of solution on the degradation effect of target pollutant were investigated by photocatalytic test.The stability of the catalyst was verified by repeated tests.The results showed that the scaled Bi2WO6 had good adsorption and photocatalytic activity.When the concentration was 20 mg/L and the dosage was 20 mg/L,the DOX adsorption and removal rate of 30 min dark reaction could reach 64.03%.The DOX removal rate can reach 96.15%under the best experimental conditions.At the same time,when the solution was neutral,the treatment effect was better than that under acidic or alkaline conditions.Through 5 repeated experiments,the DOX removal rate could still reach 93.4%,indicating that the scaled Bi2WO6 has good stability.

关 键 词：水热法 Bi2WO6 盐酸强力霉素 光催化 

分 类 号：X703.1[环境科学与工程—环境工程]