Enhancing photocatalytic activity of Fe2O3/TiO2 with gelatin: A fuzzy logic analysis of mesoporosity and iron loading

Q1 Social Sciences South African Journal of Chemical Engineering Pub Date : 2024-08-30 DOI:10.1016/j.sajce.2024.08.011

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Abstract

The synthesis of mesoporous Fe₂O₃/TiO₂ heterostructures using a P123-Gelatin hybrid template has been investigated for enhanced photocatalytic degradation of methylene blue under visible light. The study focused on the effect of gelatin concentration on mesoporosity, iron content, particle size, and surface area of Fe₂O₃/TiO₂. The results showed that the Fe₂O₃/TiO₂ composites exhibited superior photocatalytic activity compared to individual TiO₂ and Fe₂O₃. This enhancement was attributed to the optimized gelatin concentration, which increases mesoporosity and Fe₂O₃ incorporation, facilitating efficient electron transfer and photo-electron conversion for methylene blue oxidation. Additionally, a fuzzy logic analysis was conducted to correlate the physicochemical properties of the composites with their photocatalytic activities. This analysis identified iron loading and mesoporosity as theion dominant factors affecting photocatalytic efficiency, with a high correlation coefficient. The study concluded that mesoporous Fe₂O₃/TiO₂ synthesized with the P123-Gelatin template significantly improves methylene blue degradation. This improvement is primarily due to the synergistic effect of large pore diameter and Fe³⁺/Ti⁴⁺ interaction. The fuzzy logic model provided accurate predictions, confirming the critical role of iron loading and mesoporosity in enhancing photocatalytic performance.

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用明胶提高 Fe2O3/TiO2 的光催化活性：对介孔率和铁负载的模糊逻辑分析

研究人员利用 P123-明胶混合模板合成了介孔 Fe2O3/TiO2 异质结构，用于增强可见光下亚甲基蓝的光催化降解。研究的重点是明胶浓度对 Fe2O3/TiO2 的介孔度、铁含量、粒度和表面积的影响。结果表明，与单独的 TiO2 和 Fe2O3 相比，Fe2O3/TiO2 复合材料表现出更高的光催化活性。这种增强归功于优化的明胶浓度，它增加了介孔率和 Fe2O3 的掺入，促进了亚甲基蓝氧化过程中有效的电子转移和光电转换。此外，还进行了模糊逻辑分析，将复合材料的理化性质与其光催化活性联系起来。分析结果表明，铁负载量和介孔率是影响光催化效率的主要因素，相关系数很高。研究得出结论，以 P123-明胶为模板合成的介孔 Fe2O3/TiO2 能显著改善亚甲基蓝的降解效果。这种改善主要是由于大孔径和 Fe3+/Ti4+ 相互作用的协同效应。模糊逻辑模型提供了准确的预测，证实了铁负载和介孔率在提高光催化性能方面的关键作用。

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来源期刊

South African Journal of Chemical Engineering Social Sciences-Education

CiteScore

8.40

自引率

0.00%

发文量

100

审稿时长

33 weeks

期刊介绍： The journal has a particular interest in publishing papers on the unique issues facing chemical engineering taking place in countries that are rich in resources but face specific technical and societal challenges, which require detailed knowledge of local conditions to address. Core topic areas are: Environmental process engineering • treatment and handling of waste and pollutants • the abatement of pollution, environmental process control • cleaner technologies • waste minimization • environmental chemical engineering • water treatment Reaction Engineering • modelling and simulation of reactors • transport phenomena within reacting systems • fluidization technology • reactor design Separation technologies • classic separations • novel separations Process and materials synthesis • novel synthesis of materials or processes, including but not limited to nanotechnology, ceramics, etc. Metallurgical process engineering and coal technology • novel developments related to the minerals beneficiation industry • coal technology Chemical engineering education • guides to good practice • novel approaches to learning • education beyond university.