二氧化锡-溴化银复合光催化材料的制备及其处理甲基橙的研究  

Preparation of Tin Dioxide Silver Bromide Composite Photocatalytic Material and Its Treatment of Methyl Orange

作　　者：王玉凯 魏琛[1] 盛贵尚[1] WANG Yu-kai;WEI Chen;SHENG Gui-shang(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》2021年第6期25-30,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：通过简单的水热法制备了二氧化锡,并合成了SnO_(2)-AgBr复合光催化剂,利用XRD、SEM、EDS表征手段表征该材料微观形貌和吸光性能。以甲基橙为目标污染物,通过光催化实验探讨了多种单因素对材料降解效能的影响。结果表明,该复合材料吸附效果较差,但降解甲基橙效果良好。在甲基橙浓度为30 mg/L,催化剂投加量为1 g/L时,经过60 min光反应污染物去除率达84.3%,经过100 min光反应去除率达95.1%。通过5次重复利用实验,证明该复合催化剂有良好的稳定性。Tin dioxide was prepared by a simple hydrothermal method,and SnO_(2)-AgBr composite photocatalyst was synthesized.The micro morphology and light absorption properties of the material were characterized by XRD,SEM and EDS.Taking methyl orange as the target pollutant,the effects of various single factors on the degradation efficiency of the material were discussed through photocatalytic experiments.The results showed that the adsorption effect of the composite was poor,but the degradation effect of methyl orange was good.When the concentration of methyl orange was 30 mg/L and the dosage of catalyst was 1.0 g/L,the removal rate of pollutants was 84.3%after 60 min light reaction and 95.1%after 100 min light reaction.Through five times of reuse experiments,it is proved that the composite catalyst has good stability.

关 键 词：SnO_(2) 水热法 SnO_(2)-AgBr 甲基橙 光催化 

分 类 号：X703.1[环境科学与工程—环境工程]