Significantly photoinduced synergy between sodium sulfite and ammonium nitrate and the mechanism study

文献类型： 外文期刊

第一作者： Hu, Wen-Na

作者： Hu, Wen-Na;Liu, Wei;Zhang, Xian-Feng;Liu, Jian

作者机构：

关键词： ammonium nitrate; decolorization; mechanism; sulfite; synergistic effect

期刊名称：WATER SCIENCE AND TECHNOLOGY （ 影响因子：1.915； 五年影响因子：2.054 ）

ISSN： 0273-1223

年卷期： 2018 年

页码：

收录情况： SCI

摘要： In this paper, a significantly photoinduced synergy between ammonium nitrate and sodium sulfite via dye decolorization was first found. This study mainly aims to explore the influences of several fundamental aspects on the photoinduced synergy as well as discuss the detailed mechanisms. The dye removal efficiencies of methyl orange and methylene blue of the synergistic system are much higher than that of a single one, and they reach 96.4% and 90.7% when the illumination is 6 and 14 min, respectively. The optimum mass ratio of sodium sulfite and ammonium nitrate in the reaction system is 1:1. The reaction process of photoinduced synergy follows the first-order reaction equation. Effects of different structures of dyes, amount of sodium sulfite and initial dye concentration on the synergistic effect were investigated. The changes of UV-vis spectra in the course of photoinduced synergy were also examined. The excellent synergistic effect can owe to the simultaneous photoreduction and photooxidation reaction with respect to photoinduced hydrated electrons (e(aq)(-)) and SO4 center dot- active species, respectively. This work may provide some insight into detoxifying water contaminants in practical applications as well as developing other novel photoinduced synergistic systems with high performance.

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