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发表刊物：Materials Science in Semiconductor Processing

刊物所在地：Elsevier

关键字：Photocatalyst; Peroxymonosulfate; FeV3O8; C3N4; type-II heterojunction; Chlorophenols

摘要：2,4,6-Trichlorophenol (TCP) is a typical chlorophenol pollutant that can invade our living aquatic environments and pose a serious threat to human health and livelihoods. Herein, the FeV3O8/g-C3N4 (FCN) type II heterojunctions were synthesized using a hydrothermal and calcination technique. The bonded interface of the CN sheet and the bimetallic FeV3O8 spheres gave rise to an effective interfacial carrier transmission and separation, which enabled a stable photocatalytic degradation of TCP with a removal rate of 62.8 % after 2 hours light irradiation. Interestingly, the heterojunction was able to photocatalytic activate peroxymonosulfate (PMS), leading to an increased TCP removal performance (close to 100 % in 60 min). The PMS may be quickly active by the separated photo-generated carrier, accelerating the TCP degradation process. The charge transfer mechanism of the type II FCN heterojunctions has been validated by Mott-Schottky analysis and valence band X-ray photoelectron spectroscopy (VB-XPS). Free radical scavenging experiments and electron paramagnetic resonance (EPR) spectroscopy were also conducted to confirm the co-existence and relative contribution of different active radicals to the degradation process. Based on liquid chromatography-mass spectrometry (LC-MS) analysis, TCP degradation pathways have been proposed and the toxicity of the intermediate products also has been evaluated. The research provides a mechanistic foundation for the rational engineering of heterogeneous advanced oxidation processes toward efficient chlorophenol remediation.

全部作者：Hanxuan Li,Jialiu Sun

第一作者：Kongyu-ang Qu

论文类型：期刊论文

通讯作者：Sen Wang,Zuoli He,Shuguang Wang

学科门类：工学

一级学科：环境科学与工程

文献类型：J

卷号：194

页面范围：109541

字数：8000

是否译文：否

发表时间：2025-04-01

收录刊物：SCI