fewo4-cus颗粒体系光催化降解萘酚绿b

Q4 Environmental Science

Pollution Research Pub Date : 2023-01-01 DOI:10.53550/pr.2023.v42i01.025

L. Joshi, Jyotsana Panwar, R. Ameta, D. Soni

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引用次数: 0

摘要

研究了FeWO4 - cu复合光催化剂在可见光下对萘酚绿B (NGB)的光催化降解。采用水热法制备了钨酸铁。考察了FeWO4 - cu复合材料在可见光下光降解萘酚绿B染料的光催化活性。用XRD、EDX、FESEM等技术对制备的复合材料进行了表征。考察了各参数对降解速率的影响，确定了最佳条件为pH = 9.0, NGB浓度= 1.9 × 10-4 M, FeWO4 - cu用量= 0.10 g，光照强度= 70.0 mWcm-2。结果表明，复合材料在碱性介质中具有最高的催化活性。提出了一种涉及羟基自由基作为活性氧化物质的反应机制。

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PHOTOCATALYTIC DEGRADATION OF NAPHTHOL GREEN B OVER FEWO4-CUS PARTICULATE SYSTEM

The photocatalytic degradation of naphthol green B (NGB) has been studied under visible light in the presence of FeWO4 – CuS composite as a photocatalyst. Ferric tungstate was prepared by hydrothermal method. The photocatalytic activity of FeWO4 - CuS composite was evaluated for photodegradation of naphthol green B dye under visible light. As-prepared composite was characterized by techniques such as XRD, EDX and FESEM. The effect of various parameters was investigated on rate of degradation and optimum conditions were obtained as pH = 9.0, concentration of NGB = 1.9 × 10–4 M, amount of FeWO4 – CuS = 0.10 g and light intensity = 70.0 mWcm–2. It was observed that composite has the highest catalytic activity in basic medium. A tentative mechanism for the reaction has been proposed involving hydroxyl radical as an active oxidizing species.

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Pollution Research Environmental Science-Water Science and Technology

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期刊介绍： POLLUTION RESEARCH is one of the leading enviromental journals in world and is widely subscribed in India and abroad by Institutions and Individuals in Industry, Research and Govt. Departments.