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首页> 外文期刊>Journal of the Taiwan Institute of Chemical Engineers >Photocatalytic degradation and absorption kinetics of cibacron brilliant yellow 3G-P by nanosized ZnO catalyst under simulated solar light
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Photocatalytic degradation and absorption kinetics of cibacron brilliant yellow 3G-P by nanosized ZnO catalyst under simulated solar light

机译：纳米ZnO催化剂在模拟太阳光下光催化降解cibacron艳黄3G-P及其吸收动力学

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摘要

The photocatalytic degradation process and absorption kinetics of cibacron brilliant yellow 3G-P dye aqueous solution under UV-Vis light were investigated by using nanosized ZnO as a photocatalyst. The influencing parameters of dye degradation during photocatalysis, such as initial dye concentration, catalyst dosage, initial pH value and irradiation intensity, were investigated in detail. The dye solutions with concentrations < 100 ppm were similar to 98% decolorized after 60 min of UV-Vis light irradiation. The dye degradation was enhanced at original pH, indicating no requirement of pH value adjustments in process. The degradation of the dye at 200 ppm was only 52% at irradiation intensity of 7.7 mu W/cm(2) after 60 min, but above 75% degradation was achieved at 14.8 mu W/cm(2). The photodegredation kinetics of cibacron brilliant yellow 3G-P followed the Langmuir-Hinshelwood model. From the kinetic model analysis, the adsorption constant increased with increasing irradiation intensity but decreased with increasing initial dye concentration. The photodegradation and adsorption rate were relatively high for cibacron brilliant yellow 3G-P, but the maximum quantity of absorbance on ZnO surface was only 45 mu mol/g. (C) 2015 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
机译：以纳米ZnO为光催化剂，研究了cibacron亮黄3G-P染料水溶液在紫外可见光下的光催化降解过程和吸收动力学。详细研究了光催化过程中染料降解的影响参数，如初始染料浓度，催化剂用量，初始pH值和辐照强度。浓度小于100 ppm的染料溶液在UV-Vis光照射60分钟后与98％的脱色率相似。在原始pH值下，染料降解得到增强，这表明无需在过程中调节pH值。 60分钟后，在7.7μW / cm（2）的辐射强度下，染料在200 ppm处的降解仅为52％，但在14.8μW / cm（2）时，降解率达到75％以上。 cibacron亮黄色3G-P的光降解动力学遵循Langmuir-Hinshelwood模型。从动力学模型分析，吸附常数随辐照强度的增加而增加，但随初始染料浓度的增加而降低。 cibacron亮黄3G-P的光降解和吸附速率较高，但ZnO表面的最大吸收量仅为45μmol / g。 （C）2015台湾化学工程师学会。由Elsevier B.V.发布。保留所有权利。

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