Underneath mechanisms into the super effective degradation of PFOA by BiOF nanosheets with tunable oxygen vacancies on exposed (101) facets

Wang, Jingzhen; Cao, Chun‐Shuai; Zhang, Yinqing; Zhu, Lingyan

doi:10.1016/j.apcatb.2021.119911

Cited by 73 publications

(24 citation statements)

References 41 publications

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“…Doubling the OVs in BiOCl led to a four-fold increase in efficiency of defluorination in PFOA. The wide-bandgap BiOF photocatalyst can be modified by inducting OVs, which introduce the intermediate band in the forbidden gap to lower the energy required to excite the electrons by irradiation [89]. A study conducted by Zu and coworkers [89] demonstrated that OVs could be tuned on exposed (001) facets of BiOF by adjusting the concentration of ethylene glycol during synthesis.…”

Section: Other Photocatalystsmentioning

confidence: 99%

“…The wide-bandgap BiOF photocatalyst can be modified by inducting OVs, which introduce the intermediate band in the forbidden gap to lower the energy required to excite the electrons by irradiation [89]. A study conducted by Zu and coworkers [89] demonstrated that OVs could be tuned on exposed (001) facets of BiOF by adjusting the concentration of ethylene glycol during synthesis. The BiOF (001) produced by using 50% ethylene glycol could completely decompose PFOA within 6 h based on developed OVs.…”

Section: Other Photocatalystsmentioning

confidence: 99%

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Light-Induced Advanced Oxidation Processes as PFAS Remediation Methods: A Review

et al. 2021

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PFAS substances, which have been under investigation in recent years, are certainly some of the most critical emerging contaminants. Their presence in drinking water, correlated with diseases, is consistently being confirmed by scientific studies in the academic and health sectors. With the aim of developing new technologies to mitigate the water contamination problem, research activity based on advanced oxidation processes for PFAS dealkylation and subsequent mineralization is active. While UV radiation could be directly employed for decontamination, there are nevertheless considerable problems regarding its use, even from a large-scale perspective. In contrast, the use of cheap, robust, and green photocatalytic materials active under near UV-visible radiation shows interesting prospects. In this paper we take stock of the health problems related to PFAS, and then provide an update on strategies based on the use of photocatalysts and the latest findings regarding reaction mechanisms. Finally, we detail some brief considerations in relation to the economic aspects of possible solutions.

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Section: Other Photocatalystsmentioning

confidence: 99%

Section: Other Photocatalystsmentioning

confidence: 99%

Light-Induced Advanced Oxidation Processes as PFAS Remediation Methods: A Review

et al. 2021

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“…As shown in Fig. 8 experimental results and literature work (He et al 2020;Wang et al 2021), the possible degradation pathway was proposed in Fig. 9.…”

Section: Generation Mechanism Of Active Constituentsmentioning

confidence: 72%

“…Loading [MathJax]/jax/output/CommonHTML/fonts/TeX/fontdata.js experimental results and literature work (He et al 2020;Wang et al 2021), the possible degradation pathway was proposed in Fig. 9.…”

Section: Degradation Pathway Of Pfoamentioning

confidence: 99%

Self-healing Co3O4@Fe3O4/cellulose Blend Membranes Efficient Degrade Perfluorooctanoic Acid in the Visible Light-driven Photo-fenton System

Chen

Hou

Wang

et al. 2021

Preprint

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Co3O4@Fe3O4/cellulose was synthesized by in-situ self-assembly strategy coating rod-like MOF-derived Fe3O4 with Co3O4 nanoparticles and blending with cellulose solution, further applied in the visible light-driven photo-Fenton system for PFOA degradation. In addition, Co3O4@Fe3O4/cellulose/Vitrimer was obtained to explore the application of self-healing property in photo-Fenton filed and the result turned out to be good self-healing capacity for small cracks. In comparison, Co3O4@Fe3O4/cellulose can degrade around 94.5% PFOA within 180 min in reaction system, which shows better degradation capacity than others catalyst. Moreover, Co3O4@Fe3O4/cellulose was reused by rinsing with ultra-pure water and the degradation capacity was still 80.4% after five cycles. In this system, the results of Electron paramagnetic resonance analysis (EPR) and scavenger experiment suggested that PFOA degradation was a co-dependent mechanism via photogenerated electrons, photogenerated holes (h+) and various radical species, rather than a single active constituent. The degradation pathway of PFOA also was proposed based on UHPLC-MS analysis.

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“…[62] In another recent study, the faceting of BiOF nanosheets was adjusted to achieve more (101) surfaces to accelerate PFOA photodegradation compared to bulk BiOF and titania. [63] Recently, post-transition metals have emerged as important catalysts and modifiers, often as intermetallics. With respect to photocatalysis, In 2 O 3 and Ga 2 O 3 are the most prominent.…”

Section: Per-and Polyfluoroalkyl (Pfas) Substancesmentioning

confidence: 99%

Aqueous‐Phase Photocatalytic Degradation of Emerging Forever Chemical Contaminants

Kuhn

Sokefun

2021

ChemistrySelect

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Heterogeneous photocatalysis is an emerging area of catalysis increasingly fraught with pains caused by the battle between hype and real-world application. Inspired by abundant yet diffuse solar energy and applications such as clean water and energy, ample motivation has provided the background for this situation. However, substantial fundamental (e. g., charge transfer, recombination), engineering (e. g., observed rates, photon management), and practical barriers (e. g., use of precious metals, competing technologies) have limited implementation. In this review, these are all outlined, in conjunction with typical strategies for improvements, with an emphasis on the use of semiconductor photocatalysts for the degradation of emerging forever chemical contaminants in water. The selected classes of forever chemical contaminants are (micro)-plastics, per-and polyfluoroalkyl substances (PFAs), siloxanes, and dioxanes. Each has been identified as a key or emerging contaminant and often travel widely while accumulating in the atmosphere due to the lack of natural remediation processes. Recommendations to the field and opportunities for contributions are highlighted throughout and as part of the outlook to the future.

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Underneath mechanisms into the super effective degradation of PFOA by BiOF nanosheets with tunable oxygen vacancies on exposed (101) facets

Cited by 73 publications

References 41 publications

Light-Induced Advanced Oxidation Processes as PFAS Remediation Methods: A Review

Light-Induced Advanced Oxidation Processes as PFAS Remediation Methods: A Review

Self-healing Co3O4@Fe3O4/cellulose Blend Membranes Efficient Degrade Perfluorooctanoic Acid in the Visible Light-driven Photo-fenton System

Aqueous‐Phase Photocatalytic Degradation of Emerging Forever Chemical Contaminants

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