摘要
采用浸渍法将α-四(2-甲氧基乙氧基)酞菁铜和β-四(2-甲氧基乙氧基)酞菁铜分别负载在SBA-15上,制备了光催化剂。通过红外光谱、紫外可见吸收光谱和氮气吸附对催化剂进行表征和物理性质研究。探究了催化剂用量、底物浓度、H2O2浓度等因素对孔雀石绿(MG)降解率的影响。结果表明:α-Cu Pc/SBA-15的降解效果优于β-Cu Pc/SBA-15,当α-Cu Pc/SBA-15催化剂用量为0.7 g/L,H2O2浓度为8 mmol/L时,降解6 mg/L孔雀石绿60 min达最佳效果,降解率达98.8%。两种催化剂经3次重复使用,仍能达到较好的降解效果,但β-Cu Pc/SBA-15的稳定性优于α-Cu Pc/SBA-15。两种催化剂的降解反应均遵循一级动力学方程,其速率常数分别为0.034、0.035 min-1。
Theα-tetra（2-methoxy ethoxy） phthalocyanine copper andβ-tetra（2-methoxy ethoxy） phthalocyanine copper were supported on SBA-15 by impregnation method, and the photocatalytic function catalyst was prepared. The catalyst and physical properties of the product were characterized by FT-IR, UV-Vis absorption spectrum, and nitrogen adsorption. The effects of the dosage of two catalysts, substrate concentration and H2 O2 concentration on the degradation rate of malachite green（MG） were studied. The results showed that the degradation effect ofα-Cu Pc/SBA-15 was better thanβ-Cu Pc/SBA-15. When the concentration ofα-Cu Pc/SBA-15 was 0.7 g/L and the concentration of H2 O2 was 8 mmol/L, the degradation rate of malachite green with concentration of 6 mg/L was 98.8%, which obtained the best catalytic effect. The two catalysts could achieve good degradation effect after three times of reuse, and the stability ofβ-Cu Pc/SBA-15 was better than that ofα-Cu Pc/SBA-15. The degradation reaction of two catalysts followed the first-order kinetic equation, and the rate constants were 0.034, 0.035 min-1, respectively.
作者
吴瑀晗
陈伟
单秋杰
WU Yuhan;CHEN Wei;SHAN Qiujie(College of Chemistry and Chemical Engineering,Qiqihar University,Qiqihar 161006,China)
出处
《印染助剂》
CAS
北大核心
2018年第7期12-16,共5页
Textile Auxiliaries
基金
黑龙江省自然科学基金重点项目(ZD201318)
关键词
铜酞菁
光催化降解
孔雀石绿
copper phthalocyanine
photocatalytic degradation
malachite green
