Heterogeneous photo-decolourization of cobaltous phthalocyaninate dye (reactive green dye) catalyzed by ZnO

THE 7TH INTERNATIONAL CONFERENCE ON APPLIED SCIENCE AND TECHNOLOGY (ICAST 2019) Pub Date : 2019-08-23 DOI:10.1063/1.5123061

K. O. Kzar, Zainab Fadil Mohammed, S. I. Saeed, L. Ahmed, Duaa Ibrahim Kareem, Haneen Hadyi, A. J. Kadhim

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引用次数: 18

Abstract

This study focused on the photocatalytic decolourization of cobaltous phthalocyaninate dye (PcCo) from ZnO suspension solution under artificial UV-A light. The results showed that the photo-decolourization process of this dye process was obeyed to pseudo-first order kinetics. Moreover, the optimization results explained that the maximum value of decolourization efficiency of this dye was achieved at the conditions: initial dye concentration 25 mg/L and the initial pH of dye aqueous solution is equal to 11.01. Arrhenius plot obtained at temperatures ranged (287.15-303.15) K, which is equal to 28.995 kJ mol-1. The thermodynamic parameters were calculated also and determined that the photoreaction is endothermic and non-spontaneous.This study focused on the photocatalytic decolourization of cobaltous phthalocyaninate dye (PcCo) from ZnO suspension solution under artificial UV-A light. The results showed that the photo-decolourization process of this dye process was obeyed to pseudo-first order kinetics. Moreover, the optimization results explained that the maximum value of decolourization efficiency of this dye was achieved at the conditions: initial dye concentration 25 mg/L and the initial pH of dye aqueous solution is equal to 11.01. Arrhenius plot obtained at temperatures ranged (287.15-303.15) K, which is equal to 28.995 kJ mol-1. The thermodynamic parameters were calculated also and determined that the photoreaction is endothermic and non-spontaneous.

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氧化锌催化酞菁酸钴染料(活性绿染料)的非均相光脱色

研究了人工UV-A光催化氧化锌悬浮液脱色酞菁酸钴染料(PcCo)。结果表明，该染料的光脱色过程符合准一级动力学。优化结果表明，该染料的脱色效率在初始染料浓度为25 mg/L，初始染料水溶液pH = 11.01时达到最大值。在(287.15-303.15)K温度范围内得到的Arrhenius图等于28.995 kJ mol-1。计算了光反应的热力学参数，确定了光反应是吸热的、非自发的。研究了人工UV-A光催化氧化锌悬浮液脱色酞菁酸钴染料(PcCo)。结果表明，该染料的光脱色过程符合准一级动力学。优化结果表明，该染料的脱色效率在初始染料浓度为25 mg/L，初始染料水溶液pH = 11.01时达到最大值。在(287.15-303.15)K温度范围内得到的Arrhenius图等于28.995 kJ mol-1。计算了光反应的热力学参数，确定了光反应是吸热的、非自发的。

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THE 7TH INTERNATIONAL CONFERENCE ON APPLIED SCIENCE AND TECHNOLOGY (ICAST 2019)

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