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水中双酚A的有效降解：双金属UiO-66 Ce-Zr的集成

Effective BPA degradation in water: the integration of bimetallic UiO-66 Ce-Zr.

作者信息

Gallo Leidy Marcela, Obeso Juan L, Portillo-Vélez Nora S, Garduño-Albino Carlos E, Flores Catalina V, Herrera-Zuñiga Leonardo, Islas-Jácome Alejandro, Peralta Ricardo A, Leyva Carolina

机构信息

Instituto Politécnico Nacional, Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada, Laboratorio Nacional de Ciencia, Tecnología y Gestión Integrada del Agua Legaria 694, Col. Irrigación, Miguel Hidalgo 11500 CDMX Mexico

División de Ingeniería en Sistemas Automotrices, Tecnológico de Estudios Superiores del Oriente del Estado de México (TESOEM), Tecnológico Nacional de México Estado de México 56400 Mexico.

出版信息

RSC Adv. 2024 Nov 4;14(47):35090-35096. doi: 10.1039/d4ra06460g. eCollection 2024 Oct 29.

DOI:10.1039/d4ra06460g
PMID:39497778
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11533980/
Abstract

In this work, a bimetallic MOF UiO-66 Ce-Zr to degrade bisphenol A (BPA) in water was synthesised. The material exhibited a remarkable degradation efficiency of 84.3% under UV irradiation for 240 minutes. Combining cerium (Ce) and zirconium (Zr) in the MOF structure enhanced the catalytic activity and reinforced its structural stability. Comprehensive characterisation was performed using PXRD, FT-IR, SEM-EDS, XPS, and N₂ adsorption-desorption isotherms. Scavenger tests confirmed that hydroxyl (˙OH) and superoxide (˙O₂⁻) radicals played a crucial role in the photocatalysis. The material demonstrated excellent reusability, maintaining high performance over three cycles with minimal structural changes. Furthermore, a toxicological evaluation of the degradation by-products was conducted using UPLC-MS, reaffirming the potential of the material as an efficient water treatment system. This study underscores the potential of UiO-66 Ce-Zr as a stable and effective photocatalyst for water treatment applications, particularly in removing emerging pollutants such as BPA.

摘要

在这项工作中，合成了一种用于降解水中双酚A（BPA）的双金属金属有机框架UiO-66 Ce-Zr。该材料在紫外光照射240分钟的条件下表现出84.3%的显著降解效率。在金属有机框架结构中结合铈（Ce）和锆（Zr）提高了催化活性并增强了其结构稳定性。使用粉末X射线衍射（PXRD）、傅里叶变换红外光谱（FT-IR）、扫描电子显微镜-能谱仪（SEM-EDS）、X射线光电子能谱（XPS）和N₂吸附-脱附等温线进行了全面表征。清除剂测试证实羟基（˙OH）和超氧阴离子（˙O₂⁻）自由基在光催化过程中起关键作用。该材料表现出优异的可重复使用性，在三个循环中保持高性能且结构变化最小。此外，使用超高效液相色谱-质谱联用仪（UPLC-MS）对降解副产物进行了毒理学评估，再次证实了该材料作为高效水处理系统的潜力。这项研究强调了UiO-66 Ce-Zr作为一种稳定且有效的光催化剂在水处理应用中的潜力，特别是在去除诸如双酚A等新兴污染物方面。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/23a6/11533980/12c1eb8385cf/d4ra06460g-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/23a6/11533980/6a2c033456fe/d4ra06460g-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/23a6/11533980/a616a53f2bed/d4ra06460g-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/23a6/11533980/12c1eb8385cf/d4ra06460g-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/23a6/11533980/6a2c033456fe/d4ra06460g-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/23a6/11533980/a616a53f2bed/d4ra06460g-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/23a6/11533980/12c1eb8385cf/d4ra06460g-f3.jpg

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Rapid synthesis of cerium-UiO-66 MOF nanoparticles for photocatalytic dye degradation.用于光催化染料降解的铈-UiO-66金属有机框架纳米颗粒的快速合成
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