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摘要
为解决光芬顿体系需外部提供H2O2的问题,利用光催化蒽醌法制备H2O2并构建原位生成H2O2的光芬顿体系。通过优化实验条件提高H2O2产率,并通过降解罗丹明B验证该体系的光芬顿性能。结果表明,当二异丁基甲醇与2-乙基蒽醌质量比为80∶1时,H2O2的产率最高,可达13.08 mmol/L;在此条件下,将该反应与光芬顿结合,并将原位产生的H2O2用于降解罗丹明B,10 mg/L罗丹明B的降解效率达到95.59%。因此,实验构建的体系具备良好的催化降解性能。
Abstract
To solve the problem that the photo-Fenton system needs external supply of H2O2, a photocatalytic anthraquinone method is used to prepare H2O2 and construct a photo-Fenton system that generates H2O2 in situ.The yield of H2O2 is improved through optimizing experimental conditions, and the photo-Fenton performance of the system is verified by degrading Rhodamine B.The results show that the yield of H2O2 reaches the highest, being 13.08 mmol·h-1 when the mass ratio of di-isobutyl methanol to 2-ethylanthraquinone is 80:1.Under these conditions, this reaction is combined with photo-Fenton, and the in-situ generated H2O2 is used to degrade Rhodamine B.The degradation efficiency of 10 mg·L-1 Rhodamine B reaches 95.59%.It is identified that the system constructed in the experiment has good catalytic degradation performance.
关键词
光催化
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污染物降解
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光芬顿
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过氧化氢原位生成
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蒽醌
Key words
photocatalysis
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pollutants degradation
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photo-Fenton
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in-situ H2O2 generation
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anthraquinone
Author summay
张硕(1998-),女,硕士生,研究方向为生物质纳米功能材料处理污水,2015391091@st.gxu.edu.cn
基于H2O2原位生成的光芬顿体系降解罗丹明B的研究[J].
现代化工, 2023, 43(11): 128-133,139 DOI:10.16606/j.cnki.issn0253-4320.2023.11.025