Barka N, Assabbane A, Nounah A, Ichou Y Aît
Department of Chemistry, Faculty of Sciences, BP 8106 Hay Dakhla, Agadir, Morocco.
J Hazard Mater. 2008 Apr 15;152(3):1054-9. doi: 10.1016/j.jhazmat.2007.07.080. Epub 2007 Jul 28.
The photocatalytic degradation of indigo carmine has been investigated in aqueous solutions using TiO2 coated non-woven fibres as photocatalyst. The experiments were carried out to investigate the factors influencing the photocatalytic degradation, such as the previous adsorption in the dark, initial concentration of dye solution, temperature, and pH. The experimental results show that adsorption is an important parameter controlling the apparent kinetic constant of the degradation. The photocatalytic degradation rate was favoured by a high concentration of solution in respect to Langmuir-Hinshelwood model. The degradation rate was pH and temperature dependent with a high degradation rate at high temperature.
以TiO₂ 包覆的非织造纤维作为光催化剂，研究了靛蓝胭脂红在水溶液中的光催化降解。进行实验以研究影响光催化降解的因素，如黑暗中的前期吸附、染料溶液的初始浓度、温度和pH值。实验结果表明，吸附是控制降解表观动力学常数的一个重要参数。根据朗缪尔 - 欣谢尔伍德模型，高浓度溶液有利于光催化降解速率。降解速率与pH值和温度有关，在高温下具有较高的降解速率。
