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• W4387381018 abstract "This study demonstrates the novel application of carrollite (CuCo2S4) for the activation of sodium percarbonate (SPC) towards bisphenol S (BPS) degradation. The effect of several crucial factors like BPS concentration, CuCo2S4 dosage, SPC concentration, reaction temperature, water matrices, inorganic anions, and pH value were investigated. Experimental results demonstrated that BPS could be efficiently degraded by CuCo2S4-activated SPC system (88.52% at pH = 6.9). The mechanism of BPS degradation by CuCo2S4-activated SPC system was uncovered by quenching and electron spin resonance experiments, discovering that a multiple reactive oxygen species process was involved in BPS degradation by hydroxyl radical (•OH), superoxide radical (•O2−), singlet oxygen superoxide (1O2) and carbonate radical (•CO3−). Furthermore, the S(-II) species facilitated rapid redox cycles between Cu(I)/Cu(II) and Co(II)/Co(III). •CO3− was found to not only directly react with BPS molecules, but also act as a bridge to promote •O2− and 1O2 generation, thereby accelerating BPS degradation. Finally, the combination of UHPLC/Q-TOF-MS test with density functional theory (DFT) method was employed to detect major degradation intermediates and thereby elucidate possible reaction pathways of BPS degradation. This study provides a novel strategy by integrating transition metal sulfides with percarbonate for the elimination of organic pollutants in water. Bisphenol S BPS is classified as an endocrine disrupting compound (EDC) that demonstrates significant acute, reproductive, and developmental toxicity to organisms. In addition, BPS is less susceptible to natural degradation and conventional water treatment, potentially causing severe long-term damage to the aquatic environment. Consequently, it is imperative to develop an efficient technology to degrade BPS of aqueous environments. In this work, carrollite (CuCo2S4) was firstly exploited to activate sodium percarbonate (SPC) for efficient degradation of BPS with a degradation rate of 88.52% BPS in a neutral reaction medium during 40 min." @default.
• W4387381018 created "2023-10-06" @default.
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• W4387381018 date "2023-10-01" @default.
• W4387381018 modified "2023-10-16" @default.
• W4387381018 title "Catalytic activation of percarbonate with synthesized carrollite for efficient decomposition of bisphenol S: Performance, degradation mechanism and toxicity assessment" @default.
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• W4387381018 doi "https://doi.org/10.1016/j.jhazmat.2023.132719" @default.
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