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首页> 外文期刊>Journal of the Indian Chemical Society >Photocatalytic bleaching of malachite green by manganese dioxide
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Photocatalytic bleaching of malachite green by manganese dioxide

机译：二氧化锰对孔雀石绿的光催化漂白。

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摘要

The photocatalytic bleaching of aqueous solution of malachite green using manganese dioxide as photocatalyst has been carried out. The absorbance of reaction mixture at different time intervals has been observed spcctropho-tometrically. The effect of variation of different parameters such as concentration of malachite green, pH, intensity of light and amount of manganese dioxide has also been observed on the rate of reaction. It has been observed that the photocatalytic bleaching of malachite green follows pscudo first order kinetics and the rate constant k has been determined using the expression k = 2.303 x slope. A tentative mechanism for the reaction has been proposed.
机译：已经使用二氧化锰作为光催化剂对孔雀石绿的水溶液进行了光催化漂白。用分光光度法已观察到在不同时间间隔的反应混合物的吸光度。还观察到诸如孔雀石绿的浓度，pH，光强度和二氧化锰的量之类的不同参数的变化对反应速率的影响。已经观察到，孔雀石绿的光催化漂白遵循伪一级动力学，并且已经使用表达式k ＝ 2.303×斜率确定了速率常数k。已经提出了该反应的暂定机理。

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