钴酞菁/PAN纳米纤维催化H_2O_2对酸性红G的降解  

Degradation of Acid Red G Catalyzed by Cobalt Phthalocyanine/PAN Nanofiber in the Presence of H_2O_2

作　　者：胡积润 徐建峰[1] 吕汪洋[1] 陈文兴[1] 

机构地区：[1]浙江理工大学先进纺织材料与制备技术教育部重点实验室,杭州310018

出　　处：《现代纺织技术》2017年第1期40-45,共6页Advanced Textile Technology

基　　金：国家自然科学基金项目(51133006)

摘　　要：将钴酞菁和聚丙烯腈一起溶解,通过静电纺丝的方式制备出钴酞菁/PAN纳米纤维。选择偶氮染料酸性红G作为模型底物,环境友好型的双氧水作为氧化剂,研究了温度、pH值、氧化剂初始浓度、催化剂用量、印染助剂等对催化体系的影响,探讨了钴酞菁和PAN的重复使用性能和催化机理。结果表明:温度的升高和氧化剂初始浓度的加大,都能加快底物的去除速率;异丙醇和氯化钠对催化体系的活性没有影响,推测体系是由非羟基自由基主导的反应;此外,催化剂多次循环使用后,其活性并未出现明显下降。In this paper,cobalt phthalocyanine and polyacrylonitrile were dissolved to prepare the cobalt phthalocyanine/PAN nanofibers by electrostatic spinning.Azo dye acid red G was chosen as model substrate,and hydrogen peroxide was chosen as the oxidizing agent.The effects of temperature,pH,initial concentration of oxidizing agent,catalyst dosage,printing and dyeing auxiliary on the catalytic system were discussed.Besides,the recycling performance and catalytic mechanism of cobalt phthalocyanine and PAN were also studied.The results show that the increase in temperature and initial concentration of oxidizing agent could significantly promote the removal rate of substrate;the existence of NaCl and isopropanol had no impact on the catalytic activity and a non-hydroxyl radical mechanism was proposed in this catalytic system.Furthermore,the activity of the catalyst did not obviously decline after recycling.

关 键 词：钴酞菁 聚丙烯腈 静电纺丝 过氧化氢 催化降解 偶氮染料 

分 类 号：TQ032.41[化学工程]