电极
X射线光电子能谱
循环伏安法
材料科学
光电子学
阳极
光电流
光催化
分析化学(期刊)
核化学
催化作用
化学工程
化学
电化学
工程类
物理化学
生物化学
色谱法
作者
Chen Chen,Ying Li,Ruiyu Bao,Ling Yang,Mengmeng Cui,Shiyu Cheng,Jinxin Liu,Jianxin Xia,Hua Li
标识
DOI:10.1016/j.apsusc.2023.157187
摘要
In this work, CuxO nanoarrays containing Cu2O and CuO with different morphologies were synthesized on the surface of copper mesh by anodic oxidation method, and the prepared Cux[email protected] mesh electrodes were confirmed by X-ray diffraction (XRD), field emission scanning microscope (SEM), and X-ray photoelectron spectroscopy (XPS). Cyclic voltammetry (CV) and photocurrent were used to characterize the composite electrode. The photo-electro-Fenton (PEF) catalytic system constructed with the prepared Cux[email protected] electrode anode has excellent H2O2 utilization efficiency and pollutant degradation rate. Degradation efficiency of methylene blue (MB) by electro-Fenton (EF), photo-Fenton (PF) and photo-electro-Fenton (PEF) processes were investigated, which was in order: PEF > PF > EF. The effects of applied voltage, current density, pH and H2O2 concentration on MB degradation were investigated. MB could be quickly degraded at Cux[email protected] electrode during heterogeneous photo-electro-Fenton process with a first-order kinetic constant of 3.61 h−1 under 300 W simulated sunlight irradiation at 0.6 V, pH 7.0, 4.9 mmol H2O2. The Cux[email protected] electrode anode was stable and could be reused without catalytic reduction, and also had good degradation efficiency on other organic compounds (p-nitrophenol, tetracycline, norfloxacin), having potential application value in wastewater treatment.
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