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使用高级氧化工艺和不同光催化剂组合高效降解酸性紫49的方法优化

Methodological optimization for efficient degradation of Acid Violet 49 using advanced oxidation processes and varied photocatalyst combinations.

作者信息

Iqbal Aqsa, Bokhari Tanveer Hussain, Usman Muhammad, Yusaf Amnah, Mansha Asim, Saeed Muhammad, Khan Salahuddin, Iqbal Mazhar, Bhatti Muhammad Ahsan, Shafqat Syed Salman, Afshan Noshin, Zafar Muhammad Nadeem

机构信息

Colloidal and Computational Lab, Department of Chemistry, Government College University Faisalabad, Faisalabad, 38000, Pakistan.

College of Engineering, King Saud University, P.O. Box 800, Riyadh, 11421, Saudi Arabia.

出版信息

Sci Rep. 2024 Dec 5;14(1):30339. doi: 10.1038/s41598-024-81409-8.

DOI:10.1038/s41598-024-81409-8
PMID:39639077
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11621579/
Abstract

This study investigates the photodegradation of Acid Violet 49 in an aqueous medium under UV, UV/HO and combined with photo catalyst (UV/HO/TiO, UV/HO/ZnO, and UV/HO/SnO). The impact of all operational parameters including catalytic dosage, peroxidation (HO), pH and dye concentration were evaluated. The degradation efficiency of AV49 was enhanced up to 96% with the alternative photocatalyst UV/HO/ZnO under the circumstances of 0.6mL HO, 0.9 g ZnO, 50 mg/L initial dye concentration, and pH 9 after 90 min. Hemolytic test were used to check the toxicity level of products. FTIR spectroscopy of UV/ZnO/HO was applied to identify the functional group of AV49 before and end product of the degradation. Moreover, the analytical technique LC-MS provided valuable information regarding the degradation products of AV 49. A proposed pathway was identified based on the findings of the degradation product.

摘要

本研究考察了酸性紫49在紫外光（UV）、紫外光/过氧化氢（UV/HO）以及与光催化剂（UV/HO/TiO、UV/HO/ZnO和UV/HO/SnO）联合作用下在水介质中的光降解情况。评估了包括催化剂用量、过氧化（HO）、pH值和染料浓度在内的所有操作参数的影响。在0.6mL HO、0.9g ZnO、初始染料浓度50mg/L和pH值为9的条件下，经过90分钟，使用替代光催化剂UV/HO/ZnO时，AV49的降解效率提高到了96%。采用溶血试验来检测产物的毒性水平。利用UV/ZnO/HO的傅里叶变换红外光谱（FTIR）对AV49降解前后的官能团进行鉴定。此外，液相色谱-质谱联用（LC-MS）分析技术提供了有关AV49降解产物的有价值信息。基于降解产物的研究结果确定了一条可能的降解途径。

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