Efficient degradation of oxytetracycline by glucose modified CuFeO2 in visible-light-assisted heterogeneous activation of peroxymonosulfate system：Performance, mechanism and DFT calculation

Fu, Wenxian; Huo, Siyue; Zhang, Minsheng; Song, Laizhou; Zhao, Quanyou; Wu, Xuan; Gao, Mengchun

doi:10.1016/j.jece.2023.111225

Cited by 3 publications

(1 citation statement)

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“…Peroxymonosulfate can be activated via heat, UV light, and transition metals in heterogeneous and homogeneous catalysis systems [ 27 , 28 , 29 , 30 ]. Compared to other activation methods, heterogeneous activation has unique advantages due to its simple and easy operation during the experiments, low cost, easy separation from the aqueous solution, and the prevention of secondary metal pollution [ 31 , 32 , 33 ]. However, some bottleneck issues were also found in the heterogeneous PMS activation process, including metal ion leaching and an inefficient conversion efficiency of the active metal valence state.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Degradation of Levofloxacin through Visible-Light-Driven Peroxymonosulfate Activation over CuInS2/g-C3N4 Heterojunctions

Zhong,

Ji,

et al. 2023

Nanomaterials

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In this work, the heterojunctions of CuInS2 embedded in the g-C3N4 materials (xCuInS2/g-C3N4, abbreviated as xCIS/GCN) was successfully prepared for peroxymonosulfate (PMS) activation under visible light. The catalysts are characterized by different techniques, such as XRD, FTIR, SEM, TEM, and UV-vis. The unique heterojunction composites can suppress the recombination of photogenerated pairs. The catalytic results showed that the 3CIS/GCN exhibited excellent catalytic levofloxacin (LVF) degradation efficiency, while more than 98.9% of LVF was removed in 60 min over a wide pH range. SO4•−, O2•−, OH•, and 1O2 were verified as the main reactive species for LVF degradation via the quenching experiments and electron paramagnetic resonance technology (EPR). The synergetic effect of xCIS/GCN, PMS, and visible light irradiation was discussed. The possible LVF degradation pathway was proposed through byproducts analysis (LC-MS). Moreover, the 3CIS/GCN/vis-PMS system has very low metal leaching. Owing to xCIS/GCN having good properties for PMS activation, it has potential applications for LVF or other hazardous pollutants degradation.

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