摘要
以介孔分子筛MCM-41为载体,采用浸渍法将1,4,8,11,15,18,22,25-八环戊氧基酞菁锌(α-CyOPcZn)负载到分子筛上得到了一种新型的催化剂CyOPcZn/MCM-41.并通过氮气吸附、红外光谱扫描及电镜扫描对催化剂的结构进行表征.考察了该催化剂的用量、H2O2浓度对孔雀石绿降解作用的影响.实验结果表明,在模拟可见光照射下,当催化剂用量0.6 g.L-1、H2O2浓度为0.1 mmol.L-1时,60 min后使0.1 mmol.L-1的孔雀石绿水溶液的脱色率达到98.6%,并呈现出一级反应的动力学特征,速率常数k为0.0891 min-1.催化剂重复使用3次后,脱色率可达96%以上.
A novel catalyst CyOPcZn/MCM-41 was synthesized with 1,4,8,11,15,18,22,25-octacyclopentyloxy phthalocyanine zinc（Ⅱ）（α-CyOPcZn） loaded on MCM-41 mesoporous sieves by impregnation wetness method.The catalyst was characterized by N2 adsorption,Fourier-transformed infrared spectrscopy（FT-IR） and scanning electron microscopy（SEM） techniques.The dosage of catalyst,concentration of hydrogen peroxide on the catalytic oxidation of malachite green were investigated.The results showed that under visible light irradiation,malachite green solution（0.1 mmol · L-1） was degraded by 98.6% after 60 mins,when the catalyst was 0.6 g · L-1,and hydrogen peroxide was 0.1 mmol · L-1.The degradation process obeys the first-order kinetic reaction with a rate constant of 0.0891 min-1.The activity of the catalyst remained above 96% after 3 repeated use.
出处
《环境化学》
CAS
CSCD
北大核心
2012年第7期1043-1048,共6页
Environmental Chemistry
基金
黑龙江省自然科学基金重点项目(D200822)资助
关键词
α-八环戊氧基酞菁锌
介孔分子筛
光催化
孔雀石绿
反应动力学
α-octacyclopentyloxy phthalocyanine zinc（Ⅱ）； mesoporous sieves； photocatalysis； malachite green； reaction kinetics
