High-efficiency Fe(III)-doped ultrathin VO2 nanobelts boosted peroxydisulfate activation for actual antibiotics photodegradation

IF 8.9 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Chinese Chemical Letters Pub Date : 2025-03-01 Epub Date: 2024-06-04 DOI:10.1016/j.cclet.2024.110087

Shukun Le , Peng Wang , Yuhao Liu , Mutao Xu , Quansheng Liu , Qijie Jin , Jie Miao , Chengzhang Zhu , Haitao Xu

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Abstract

It has been challenging for Fe(III) regeneration in Fe-based photocatalysts for continuous peroxydisulfate (PDS) activation due to the lower ability to reduce Fe(III). In this work, Fe-doped ultrathin VO₂ (Fe-VO₂) nanobelts were synthesized for purifying metronidazole (MNZ) via PDS activation. As an efficient Fenton-like catalyst for PDS activation, 2 wt% Fe-doped VO₂ can remove 98 % of MNZ within 40 min and exhibits impressive recyclability. The synergistic effect of Fe-VO₂ and Fe(III) activated PDS boosted the photocatalytic performance. Moreover, SO₄^•−, h⁺, O₂^•−, ¹O₂, and ^•OH were the main reactive radicals. The effects of initial MNZ concentration, Fe-VO_2, PDS dosage, and various anions/cations on MNZ removal by the Fe-VO₂/PDS/Vis system were studied. The intermediates of MNZ degradation and possible pathways were determined by density function theory (DFT) calculations and HPLC-MS. This study provided a sustainable technology using Fe-doped ultrathin VO₂ nanobelts for photocatalytic PDS activation and decontamination of pharmaceutical wastewater.

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掺杂铁(III)的高效超薄 VO2 纳米颗粒促进过硫酸盐活化，实现抗生素的实际光降解

由于铁基光催化剂对铁（III）的还原能力较低，对连续过硫酸盐（PDS）活化的铁（III）再生一直是一个挑战。本文采用PDS活化法制备了fe掺杂超薄VO2纳米带，用于纯化甲硝唑（MNZ）。作为一种高效的PDS类fenton催化剂，掺铁率为2 wt%的VO2在40 min内可去除98% %的MNZ，并具有良好的可回收性。Fe- vo2和Fe（III）的协同作用提高了PDS的光催化性能。SO4•−、h+、O2•−、1O2和•OH是主要的活性自由基。研究了初始MNZ浓度、Fe-VO2、PDS用量和不同阴离子/阳离子对Fe-VO2/PDS/Vis体系脱除MNZ的影响。通过密度泛函理论（DFT）计算和HPLC-MS分析确定了MNZ降解的中间体和可能的途径。本研究提供了一种可持续的利用掺铁超薄VO2纳米带光催化PDS活化和净化制药废水的技术。

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来源期刊

Chinese Chemical Letters 化学-化学综合

CiteScore

14.10

自引率

15.40%

发文量

8969

审稿时长

1.6 months

期刊介绍： Chinese Chemical Letters (CCL) (ISSN 1001-8417) was founded in July 1990. The journal publishes preliminary accounts in the whole field of chemistry, including inorganic chemistry, organic chemistry, analytical chemistry, physical chemistry, polymer chemistry, applied chemistry, etc.Chinese Chemical Letters does not accept articles previously published or scheduled to be published. To verify originality, your article may be checked by the originality detection service CrossCheck.