催化学报

催化学报 ›› 2008, Vol. 29 ›› Issue (4): 397-402.

• 研究论文 • 上一篇    下一篇

新型仿生光催化剂HMS-FePcS催化降解孔雀绿的反应因素及动力学

高冠道1,张爱勇1,张萌1,陈金龙2,张全兴2   

  1. 1 南开大学环境科学与工程学院环境污染过程与基准教育部重点实验室(南开大学), 天津 300071; 2 南京大学环境学院污染控制与资源化研究国家重点实验室, 江苏南京 210093
  • 收稿日期:2008-04-25 出版日期:2008-04-25 发布日期:2012-03-22

Reaction Factors and Kinetics of Degradation of Malachite Green with Novel Biomimetic Photocatalyst HMS-FePcS

GAO Guandao1, ZHANG Aiyong1, ZHANG Meng1, CHEN Jinlong2, ZHANG Quanxing2   

  1. 1 Key Laboratory of Pollution Processes and Environmental Criteria (Nankai University), Ministry of Education, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China; 2 State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing 210093, Jiangsu, China
  • Received:2008-04-25 Online:2008-04-25 Published:2012-03-22

PDF

852

被引次数

40

摘要： 在可见光照射下,应用合成的新型仿生光催化剂HMS-FePcS, 催化降解孔雀绿模拟废水. 考察了温度、光源强度、催化剂用量、过氧化氢用量以及金属活性中心(Fe, Cu和Co)等一系列因素对降解反应的影响,得到了优化的反应条件. 在此基础上推导出孔雀绿光催化降解的反应级数及反应速率常数. 该降解反应分两个阶段,初始反应的速率与反应物的浓度无关,呈现出零级反应的特征; 而后一阶段的反应呈现一级反应的特征. 两段反应均可用经典的Langmuir-Hinshelwood多相催化动力学模型进行合理的解释.

关键词: 光催化, 孔雀绿, 磺酸铁酞菁, 反应因素, 反应动力学

Abstract: A novel catalyst, HMS-FePcS, prepared by modifying HMS molecular sieve with iron sulfophthalocyanine (FePcS) was found to be highly effective for the degradation of nonbiodegradable malachite green upon visible light irradiation in the presence of H2O2. Influencing factors including temperature, light energy, dosages of the catalyst and H2O2, and active centers were investigated. The experimental data of kinetics from optimum conditions indicated that the reaction is zero order in the initial stage and first order in the second stage. A rational explanation was suggested according to the Langmuir-Hinshelwood model.

Key words: photocatalysis, malachite green, iron sulfophthalocyanine, reaction factor, reaction kinetics