Efficient degradation of bisphenol from aqueous solutions via a Fenton-like process using C-ZIF-8@Fe/REEs catalysts

IF 9.2 2区工程技术 Q1 ENERGY & FUELS

Sustainable Materials and Technologies Pub Date : 2025-09-30 DOI:10.1016/j.susmat.2025.e01696

Hui Li , Ronghao Wu , Long Zhou , Zuliang Chen

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引用次数: 0

Abstract

In this study, a novel C-ZIF-8@Fe/REEs composite, fabricated from one-step pyrolysis using ZIF-8@Fe adsorbed with rare earth elements (REEs) as precursors was successfully used to activate peroxymonosulfate (PMS) for efficient oxidation of Bisphenol A (BPA). The as-prepared C-ZIF-8@Fe/REEs exhibited high PMS activation performance, with an BPA removal efficiency exceeding 95 % within 120 min. Characterizations revealed that the REEs introduction increased the exposure of active sites, and facilitates the electron transfer. Electron paramagnetic resonance analysis and quenching tests confirmed that both radical (·OH, ·SO₄⁻) and non-radical (¹O₂, high-valent metals, and electron transfer) pathways were involved in BPA degradation. Reasonable BPA degradation pathways were proposed by analyzing the results of LC-MS and DFT calculations. Additionally, toxicity assessments demonstrated a significant reduction in the toxicity of degradation products. Finally, the synthesized composite exhibited excellent reusability and stability in real wastewater fixed column bed experiments, with the removal efficiency still be higher than 70 % after 11 h operation. These findings demonstrate that the recovery REEs from mining wastewater is an effective strategy in developing a highly efficient Fenton-like catalysts, and also highlight the promising role of using C-ZIF-8@Fe/REEs in wastewater treatment, particularly for the removal of organic contaminants.

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利用C-ZIF-8@Fe/ ree催化剂通过Fenton-like工艺高效降解水溶液中的双酚

在这项研究中，利用ZIF-8@Fe吸附稀土元素（ree）作为前驱体，一步热解制备了一种新型C-ZIF-8@Fe/REEs复合材料，成功地激活了过氧单硫酸盐（PMS），以有效氧化双酚a （BPA）。制备的C-ZIF-8@Fe/REEs具有良好的PMS活化性能，在120 min内对BPA的去除率超过95%。表征结果表明，稀土元素的引入增加了活性位点的暴露，促进了电子的转移。电子顺磁共振分析和淬火实验证实，自由基（·OH、·SO4−）和非自由基（1O2、高价金属和电子转移）途径都参与了BPA的降解。通过分析LC-MS和DFT计算结果，提出了合理的双酚a降解途径。此外，毒性评估表明降解产物的毒性显著降低。最后，合成的复合材料在实际废水固定柱床实验中表现出良好的可重复使用性和稳定性，运行11 h后去除率仍高于70%。这些研究结果表明，从采矿废水中回收稀土是开发高效类芬顿催化剂的有效策略，同时也突出了C-ZIF-8@Fe/稀土在废水处理，特别是有机污染物去除中的应用前景。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Sustainable Materials and Technologies Energy-Renewable Energy, Sustainability and the Environment

CiteScore

13.40

自引率

4.20%

发文量

158

审稿时长

45 days

期刊介绍： Sustainable Materials and Technologies (SM&T), an international, cross-disciplinary, fully open access journal published by Elsevier, focuses on original full-length research articles and reviews. It covers applied or fundamental science of nano-, micro-, meso-, and macro-scale aspects of materials and technologies for sustainable development. SM&T gives special attention to contributions that bridge the knowledge gap between materials and system designs.