高性能UiO-67/BiFeO3光催化剂的研制:RSM工艺优化

IF 5.8 2区 化学 Q2 CHEMISTRY, MULTIDISCIPLINARY
Ali Khatib Juma , Zulkifli Merican Aljunid Merican , Abdurrashid Haruna , Bamidele Victor Ayodele , Afiq Mohd Laziz , Atta Ullah , Hamzah Sakidin
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引用次数: 0

摘要

由于工业化导致大气中二氧化碳浓度持续上升,引起了紧迫的环境问题,需要有效的碳捕获和利用战略。其中,光催化将二氧化碳还原为甲醇提供了一种可持续的方法,可以在生产有价值的太阳能燃料的同时减少排放。金属有机框架(mof)由于其高表面积、可调节的孔隙率和密集的活性位点而成为有前途的光催化剂,尽管它们的宽带隙限制了可见光活性。本研究结合BiFeO3的窄带隙和UiO-67的结构优势,通过湿化学方法合成了UiO-67/BiFeO3复合光催化剂。可见光下光催化实验表明,复合材料的甲醇产率显著提高,4 h后达到93.99 μmol/g·h,优于纯UiO-67 (31.29 μmol/g·h)和BiFeO3 (8.01 μmol/g·h)。采用响应面法(RSM)和Box-Behnken设计(BBD)优化反应条件。模型(R2 = 0.9966)表明,最佳甲醇产率为95.06 μmol/g·h,理想值为1.000。这些发现突出了BiFeO3的光吸收和UiO-67的CO2吸附的协同作用,展示了RSM在优化基于mof的光催化体系以实现可持续CO2转化方面的潜力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Development of high performing UiO-67/BiFeO3 photocatalyst for selective CO2 conversion to methanol: Process optimization by RSM

Development of high performing UiO-67/BiFeO3 photocatalyst for selective CO2 conversion to methanol: Process optimization by RSM
The continuous rise in atmospheric CO2 levels due to industrialization has raised pressing environmental concerns, necessitating efficient carbon capture and utilization strategies. Among them, the photocatalytic reduction of CO2 to methanol offers a sustainable approach that mitigates emissions while producing a valuable solar fuel. Metal-organic frameworks (MOFs) have emerged as promising photocatalysts due to their high surface area, tunable porosity, and dense active sites, though their wide bandgaps limit visible-light activity. In this study, a UiO-67/BiFeO3 composite photocatalyst was synthesized via a wet chemical method, combining BiFeO3's narrow bandgap with the structural advantages of UiO-67. Photocatalytic tests under visible light showed a significant improvement in methanol production, with the composite achieving 93.99 μmol/g·h after 4 h outperforming pure UiO-67 (31.29 μmol/g·h) and BiFeO3 (8.01 μmol/g·h). To optimize reaction conditions, Response Surface Methodology (RSM) and Box–Behnken design (BBD) were employed. The resulting model (R2 = 0.9966) identified an optimal methanol production rate of 95.06 μmol/g·h with a desirability value of 1.000. These findings highlight the synergistic role of BiFeO3's light absorption and UiO-67's CO2 adsorption, showcasing the potential of RSM in optimizing MOF-based photocatalytic systems for sustainable CO2 conversion.
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来源期刊
Sustainable Chemistry and Pharmacy
Sustainable Chemistry and Pharmacy Environmental Science-Pollution
CiteScore
8.20
自引率
6.70%
发文量
274
审稿时长
37 days
期刊介绍: Sustainable Chemistry and Pharmacy publishes research that is related to chemistry, pharmacy and sustainability science in a forward oriented manner. It provides a unique forum for the publication of innovative research on the intersection and overlap of chemistry and pharmacy on the one hand and sustainability on the other hand. This includes contributions related to increasing sustainability of chemistry and pharmaceutical science and industries itself as well as their products in relation to the contribution of these to sustainability itself. As an interdisciplinary and transdisciplinary journal it addresses all sustainability related issues along the life cycle of chemical and pharmaceutical products form resource related topics until the end of life of products. This includes not only natural science based approaches and issues but also from humanities, social science and economics as far as they are dealing with sustainability related to chemistry and pharmacy. Sustainable Chemistry and Pharmacy aims at bridging between disciplines as well as developing and developed countries.
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