纳米氧化锌(ZnO)催化超声波降解酸性红B的研究  

Degradation of Acid Red B in the Presence of Nanon-Sized ZnO Powder under Ultrasonic Irradiation

作　　者：姜玉春[1] 田朋[2] 姜喆[1] 韩正学[3] 曹春英[4] 徐锐[1] 邢志强[1] 

机构地区：[1]辽宁大学化学院,辽宁沈阳110036 [2]海军驻沈阳地区航空军事代表室,辽宁沈阳110034 [3]沈阳化工股份有限公司,辽宁沈阳110026 [4]沈阳广播电视大学化学系,辽宁沈阳110003

出　　处：《沈阳师范大学学报（自然科学版）》2008年第2期202-205,共4页Journal of Shenyang Normal University:Natural Science Edition

基　　金：国家自然科学基金资助项目(20371023)

摘　　要：采用高温活化处理过的纳米氧化锌(ZnO)粉末为催化剂,研究了超声照射对酸性红B的降解.另外,还考查了超声照射时间,酸性红B初始浓度和纳米ZnO的添加量对酸性红B降解反应的影响.结果表明:在纳米ZnO作用下,酸性红B的超声降解效果明显优于单纯超声波照射降解.降解动力学符合一级反应.在超声波频率40 kHz,输出功率50 W,催化剂用量1.0 g/L,pH为7.0,温度25℃,酸性红B水溶液初始浓度10 mg/L的条件下,照射120 min左右时降解率即可达到86%以上.Some factors such as ultrasonic irradiation time, initial concentration of acid red B and addition amount of ZnO on ultrasonic degradation of Acid Red B was studied with nanometer ZnO catalyst activated at high-temperature. The results indicated that the effects of sonocatalytic degradation were more obvious in the presence of nanometer ZnO. The ultrasonic degradation kinetics of Acid Red B in the presence of nanometer ZnO catalyst follows first-order reaction. The degradation ratio of Acid Red B surpassed 86% within 120 min under conditions of ultrasonic frequency of 40 kHz, power input of 50W, amount of catalyst of 1.0 g/L, pH = 7, temperature of 25℃ and Acid Red B concentration of 10 mg/L.

关 键 词：酸性红B 纳米氧化锌(ZnO) 超声波照射 声催化降解 

分 类 号：X703.1[环境科学与工程—环境工程]