Visible light absorption by perylene diimide for synergistic persulfate activation towards efficient photodegradation of bisphenol A

Ji, Qiuyi; Cheng, Xiaoli; Wu, Yimin; Xiang, Weiming; He, Huan; Xu, Zhe; Xu, Chenmin; Qi, Chengdu; Li, Shiyin; Zhang, Limin; Yang, Shaogui

doi:10.1016/j.apcatb.2020.119579

Cited by 108 publications

(19 citation statements)

References 57 publications

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“…Surprisingly, very little attention has been paid to the potential activation of PDS by visible light under a catalyst-free condition. In contrast, extensive studies have been conducted to activate PDS by ultraviolet (UV) light, and PDS activation by visible light often relies on the assistance of homogeneous and heterogeneous catalysts (including dye photosensitizers). ,− However, a closer examination of the literature suggests that visible light activation of PDS without an additional catalyst is possible. A recent study on the inactivation of Escherichia coli, Staphylococcus aureus, and Pseudomonas aeruginosa implied the activation of PDS by visible light to generate reactive species such as SO 4 •– , • OH, and O 2 •– .…”

Section: Introductionmentioning

confidence: 99%

Visible Light-Induced Catalyst-Free Activation of Peroxydisulfate: Pollutant-Dependent Production of Reactive Species

Wen

Huang

Ashley

et al. 2022

Environ. Sci. Technol.

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Activation of peroxydisulfate (PDS, S2O8 2–) via various catalysts to degrade pollutants in water has been extensively investigated. However, catalyst-free activation of PDS by visible light has been largely ignored. This paper reports effective visible light activation of PDS without any additional catalyst, leading to the degradation of a wide range of organic compounds of high environmental and human health concerns. Importantly, the formation of reactive species is distinctively different in the PDS visible light system with and without pollutants [e.g., atrazine (ATZ)]. In addition to SO4 •– generated via S2O8 2– dissociation under visible light irradiation, O2 •– and 1O2 are also produced in both systems. However, in the absence of ATZ, H2O2 and O2 •– are key intermediates and precursors for 1O2, whereas in the presence of ATZ, a different pathway was followed to produce O2 •– and 1O2. Both radical and nonradical processes contribute to the degradation of ATZ in the PDS visible light system. The active role of 1O2 in the degradation of ATZ besides SO4 •– is manifested by the enhanced degradation of contaminants and electron paramagnetic resonance spectroscopy measurements in D2O.

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Section: Introductionmentioning

confidence: 99%

Visible Light-Induced Catalyst-Free Activation of Peroxydisulfate: Pollutant-Dependent Production of Reactive Species

Wen

Huang

Ashley

et al. 2022

Environ. Sci. Technol.

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“…Due to the advantages of great stability and safety (for transportation and storage), solid-form oxidants such as peroxymonosulfate (PMS), , persulfate (PS), , and periodate (PI) , based AOPs have drawn great attention for the contaminants’ removal (degradation of organic micropollutants and inactivation of bacteria) in water. Activation of PI could generate various types of highly reactive species including iodyl radical ( • IO 3 ), hydroxyl radical ( • OH), superoxide radical anion( • O 2 – ), atomic oxygen radical anion ( • O – ), and singlet oxygen ( 1 O 2 ).…”

Section: Introductionmentioning

confidence: 99%

Catalyst-Free Periodate Activation by Solar Irradiation for Bacterial Disinfection: Performance and Mechanisms

Liu

Dong

et al. 2022

Environ. Sci. Technol.

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Periodate (PI)-based advanced oxidation process has recently attracted great attention in the water treatment processes. In this study, solar irradiation was used for PI activation to disinfect waterborne bacteria. The PI/solar irradiation system could inactivate Escherichia coli below the limit of detection (LOD, 10 CFU mL–1) with initial concentrations of 1 × 106, 1 × 107, and 1 × 108 CFU mL–1 within 20, 40, and 100 min, respectively. •O2 – and •OH radicals contributed to the bacterial disinfection. These reactive radicals could attack and penetrate the cell membrane, thereby increasing the amount of intracellular reactive oxygen species and destroying the intracellular defense system. The damage of the cell membrane caused the leakage of intracellular K+ and DNA (that could be eventually degraded). Excellent bacterial disinfection performance in PI/solar irradiation systems was achieved in a wide range of solution pH (3–9), with coexisting humic acid (0.1–10 mg L–1) and broad solution ionic strengths (15–600 mM). The PI/solar irradiation system could also efficiently inactivate Gram-positive Bacillus subtilis. Moreover, PI activated by natural sunlight irradiation could inactivate 1 × 107 CFU mL–1 viable E. coli below the LOD in the river and sea waters with a working volume of 1 L in 40 and 50 min, respectively. Clearly, the PI/solar system could be potentially applied to disinfect bacteria in water.

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“…In pathway III, the oxidation of BPA leads to the generation of monohydroxylated BPA ( m / z = 243) . Due to a further attack, these intermediates go through further aromatic ring opening, leading to the formation of malonic acid ( m / z = 103), oxalic acid ( m / z = 89), and other small organic molecules, which are further oxidized by ROSs and mineralized into CO 2 and H 2 O with the prolonged reaction.…”

Section: Resultsmentioning

confidence: 99%

Novel Pyrolusite-Templated Biochar as an Outstanding Catalyst for Persulfate Activation: Structural Design, Synergistic Effect, and Mechanism

Feng¹,

Faraj

Yan³

et al. 2022

Ind. Eng. Chem. Res.

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The design of a high-efficiency and ecofriendly persulfate (PS) activator with low cost and superior performance in water decontamination still remains a big challenge. Herein, we report a facile strategy for the synthesis of novel pyrolusite-templated mesoporous catalyst (PMC), and used it as a green PS activator for the outstanding removal of bisphenol A (BPA) in water. The N2 adsorption–desorption curves and SEM-EDS images show that pyrolusite templating can successfully modulate the mesoporous structure of the catalyst; the XRD and XPS spectra indicate that pyrolusite templating renders the catalyst with enriched active sites and faster electron transfer. The mechanism studies suggest that both the radical and nonradical pathway [singlet oxygen (1O2)] contributed to BPA degradation, and 86.81% of the total organic carbon (TOC) of 100 mg/L BPA was removed using merely 0.4 g/L PMC, without detectable metal ion leaching. This work provides a new strategy for the structural design and property adjustment of an efficient persulfate catalyst for green environmental remediation.

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Visible light absorption by perylene diimide for synergistic persulfate activation towards efficient photodegradation of bisphenol A

Cited by 108 publications

References 57 publications

Visible Light-Induced Catalyst-Free Activation of Peroxydisulfate: Pollutant-Dependent Production of Reactive Species

Visible Light-Induced Catalyst-Free Activation of Peroxydisulfate: Pollutant-Dependent Production of Reactive Species

Catalyst-Free Periodate Activation by Solar Irradiation for Bacterial Disinfection: Performance and Mechanisms

Novel Pyrolusite-Templated Biochar as an Outstanding Catalyst for Persulfate Activation: Structural Design, Synergistic Effect, and Mechanism

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