低频低功率超声协同BiOI光催化降解有机废水的研究  

Study on photocatalytic degradation of dye wastewater by BiOI with low frequency and low power ultrasound

作　　者：江馨 陈思怡 张晶[1] 王敏超 王君豪 JIANG Xin;CHEN Si-yi;ZHANG Jing;WANG Min-chao;WANG Jun-hao(School of Medical and Pharmaceutical Engineering,Taizhou Vocational&Technical College,Taizhou 318000,China)

机构地区：[1]台州职业技术学院医药学院

出　　处：《化学工程师》2019年第11期34-38,共5页Chemical Engineer

基　　金：浙江省基础公益研究计划项目(LGG18E020003);浙江省自然科学基金项目(LY17E020001);台州市科技计划项目(1701gy23);台州职业技术学院大学生科技创新项目(2013DKC15)

摘　　要：利用超声协同BiOI光催化氧化法,对含有亚甲基蓝的染料废水进行了低频、低功率的超声协同光催化降解试验,并对降解机理进行了探讨。结果表明,超声协同BiOI光催化的联合技术对于染料亚甲基蓝的降解率相对于单一的光催化技术或单一的超声技术都有非常显著的提高,在30min内,在频率20kHz,功率50W的超声条件下,对亚甲基蓝的降解率高达约92%。此外,通过向超声协同光催化降解亚甲基蓝体系中加入捕获剂来考察降解过程中起到重要作用的活性基团,研究发现,·OH对于降解过程作用最大。The low frequency and low power sonophotocatalytic degradation of dye wastewater containing methylene blue was carried out by ultrasonic-BiOI photocatalytic synergistic oxidation,and the degradation mechanism was discussed.The results showed that the degradation efficiency of methylene blue by sonophotocatalysis was significantly higher than that by single photocatalysis or single ultrasonic technology.Within 30minutes,the degradation rate of methylene blue was as high as 92%under the condition of the frequency 20kHz and power 50W.In addition,the active groups that played an important role in the degradation process were investigated by adding scavengers to the system of sonophotocatalytic degradation of methylene blue.It was found that·OH had the greatest effect on the degradation process.

关 键 词：超声 BiOI 光催化 亚甲基蓝 

分 类 号：O644.1[理学—物理化学]