Degradation of Orange G, Acid Blue 161, and Brillant Green Dyes Using UV Light-Activated GA–TiO2–Cd Composite

IF 4.4 4区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Global Challenges Pub Date : 2024-04-14 DOI:10.1002/gch2.202300271

Derya Tekin, Derya Birhan, Taner Tekin, Hakan Kiziltas

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Abstract

In this study, photocatalysts with high photocatalytic activity performance are synthesized by synthesizing graphene aerogel-supported, cadmium-doped TiO₂ composites by hydrothermal method for the effective degradation of organic dyes in wastewater. Here, GA–TiO₂–Cd is investigated as a photocatalyst for the degradation of toxic dyes named Orange G, Acid Blue 161, and Brilliant Green in the UV part of the light spectrum. As a result of the experiments, it is observed that the effective decomposition of organic dyes is due to graphene aerogel (GA) and cadmium-doped TiO₂ nanoparticles. The results show that for 20 ppm solutions of Orange G, Acid Blue 161, and Brilliant Green, dyes are removed at approximately 81.075%, 84.15%, and 95.18% in 120 min. The morphology and elemental analysis of the synthesized composites are determined using SEM-EDS, crystal structure analysis by XRD, chemical bond analysis by FTIR, optical properties by UV-Vis-NIR spectrophotometry, and thermal resistance by TGA analysis.

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利用紫外光激活的 GA-TiO2-Cd 复合材料降解橙 G、酸性蓝 161 和艳绿染料

本研究采用水热法合成了石墨烯气凝胶支撑的掺镉 TiO2 复合材料，从而合成了具有高光催化活性的光催化剂，用于有效降解废水中的有机染料。本文研究了 GA-TiO2-Cd 作为光催化剂在紫外光谱下降解有毒染料橙 G、酸性蓝 161 和艳绿的情况。实验结果表明，石墨烯气凝胶（GA）和掺杂镉的 TiO2 纳米粒子能有效分解有机染料。结果表明，对于 20 ppm 的橙 G、酸性蓝 161 和亮绿溶液，120 分钟内染料的去除率分别约为 81.075%、84.15% 和 95.18%。合成复合材料的形貌和元素分析采用 SEM-EDS、晶体结构分析采用 XRD、化学键分析采用 FTIR、光学性质采用 UV-Vis-NIR 分光光度法，热阻分析采用 TGA。

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