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首页> 外文期刊>Environmental progress & sustainable energy >Calotropis gigantea leaves assisted biosynthesis of ZnO and Ag@ZnO catalysts for degradation of rhodamine B dye in aqueous medium
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Calotropis gigantea leaves assisted biosynthesis of ZnO and Ag@ZnO catalysts for degradation of rhodamine B dye in aqueous medium

机译：Calotropis Gigantea留下ZnO和Ag ZnO催化剂的辅助生物合成，用于水性介质中罗丹明B染料的降解

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The semiconductor metal oxides based photocatalysis is one of the efficient techniques used for eradication of pollutants from wastewater. The plants mediated biosynthesis of metal oxides have got much interest due to environmentally friendly and cost-effective nature. This article reports the Calotropis gigantea mediated biosynthesis of ZnO and Ag@ZnO as effective catalysts for degradation of rhodamine B (RhB) dye. After characterization with advanced techniques, the biosynthesized ZnO and Ag@ZnO were tested as photocatalysts on degradation of RhB dye under irradiation. The catalytic activity of ZnO and Ag@ZnO was estimated in terms of decolorization, COD, and TOC removal. Results showed that 50.4 and 90.2% decolorization, 41.3 and 74.8% removal of COD, and 45.3 and 83.5% removal of TOC were measured over ZnO and Ag@ZnO as photocatalysts in 120 min, respectively. The biosynthesized Ag@ZnO was a stable and reusable catalyst in degradation experiments.
机译：基于半导体金属氧化物的光催化是用于消除废水中污染物的有效技术之一。由于环境友好和成本效益的性质，植物介导的金属氧化物的生物合成已经很多兴趣。本文报道了Calotropis Gigantea介导的ZnO和Ag @ ZnO的生物合成作为罗丹明B（RHB）染料的降解的有效催化剂。用先进技术表征后，将生物合成的ZnO和Ag @ ZnO在辐照下作为光催化剂进行了光催化剂。 ZnO和Ag @ ZnO的催化活性在脱色，鳕鱼和去除方面估计。结果表明，在120分钟的光催化剂上，测量了50.4和90.2％的脱色，41.3和74.8％的鳕鱼，45.3和83.5％去除TOC，分别为光催化剂。 Biosynthesized Ag ZnO在降解实验中是一种稳定且可重复使用的催化剂。

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