Application of photocatalytic ozonation with a WO3/TiO2 catalyst for PFAS removal under UVA/visible light

Lashuk, Brent; Pineda, Marco; AbuBakr, Salma; Boffito, Daria C.; Yargeau, Viviane

doi:10.1016/j.scitotenv.2022.157006

Cited by 35 publications

(5 citation statements)

References 79 publications

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“…GenX, the new PFOA replacement material, proved very resistant to all treatments. This is in line with the latest results of [42], who found that the CF3 group on the alpha carbon of GenX acts as a protective group, making it resistant to advanced oxidative processes [142].…”

Section: Destruction Techniquessupporting

confidence: 91%

“…Lashuk et al evaluated the catalytic ozonation removal potential for five different PFAS including GenX in the presence of four catalysts fabricated using titanium in different ratios of butaoxide, mixed with t-butanol (WO 3 /TiO 2 catalyst) [142]. Photocatalytic ozonation removed 4-24% of PFAS, whereas photolysis destroyed 4-13%, ozone photolysis eliminated 7-16%, and photolysis removed 2-4%.…”

Section: Destruction Techniquesmentioning

confidence: 99%

See 1 more Smart Citation

A Critical Review on PFAS Removal from Water: Removal Mechanism and Future Challenges

Amen,

Ibrahim,

Shafqat

et al. 2023

Sustainability

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Per and polyfluoroalkyl substances (PFAS) have been extensively employed in a broad range of manufacturing and consumer goods due to their highly persistent nature. PFAS exposure is recognized to pose serious health hazards; therefore, addressing PFAS pollution in water has become a top priority for public health and environmental protection organizations. This review article focuses on the efficiency of different removal techniques (activated carbon, biochar, ion exchange resin, membrane filtration, reverse osmosis, metal-organic frameworks, foam fractionation, ozone fractionation, and destruction techniques) for eliminating different types of short- and long-chain PFAS from water. Hydrophobicity and electrostatic interactions are revealed to be the primary mechanisms for the elimination of PFAS. The efficiency of all techniques to eradicate short-chain PFAS is comparatively lower compared to long-chain PFAS. The destruction techniques are the most efficient but have some drawbacks, including the formation of PFAS precursors and high operational costs. According to the findings from the study, it is anticipated that combined methods will be required to effectively remediate PFAS-contaminated water.

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Section: Destruction Techniquessupporting

confidence: 91%

Section: Destruction Techniquesmentioning

confidence: 99%

A Critical Review on PFAS Removal from Water: Removal Mechanism and Future Challenges

Amen,

Ibrahim,

Shafqat

et al. 2023

Sustainability

View full text Add to dashboard Cite

show abstract

“…In Figure 5a, the absorption edges of pure WO 3 NSs and ZnIn 2 S 4 are about 475 and 551 nm, respectively, which is similar to previous reports. 31,32 The light adsorption edge of WO 3 / ZnIn 2 S 4 exhibits a significant red shift compared to that of pure WO 3 , which indicated that WO 3 /ZnIn 2 S 4 has improved visible-light utilization ability. Thus, the WO 3 /ZnIn 2 S 4 with a hierarchical structure could allow much more multiple reflections of incident light, efficiently enhancing the visiblelight absorption ability and thus allowing more photogenerated carriers to take part in CO 2 photoreduction.…”

Section: Uv−vis Drs Analysismentioning

confidence: 99%

WO₃ Nanosheet/ZnIn₂S₄ S-Scheme Heterojunctions for Enhanced CO₂ Photoreduction

Xu,

Zhang,

Fan

et al. 2024

ACS Appl. Nano Mater.

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The nanostructure of the photocatalyst plays a crucial role in determining its catalytic ability. In this paper, a 2D/2D WO 3 /ZnIn 2 S 4 Sscheme heterojunction was successfully prepared through a simple hydrogen reaction. Under UV−vis light irradiation, the yield of CO in the CO 2 photoreduction process using WO 3 /ZnIn 2 S 4 as the catalyst reached about 44.61 μmol•g −1 , which was about 3.9 times higher than that obtained with ZnIn 2 S 4 alone. Cycling experiments demonstrated that the binary composite exhibited excellent photocatalytic activity and material stability. Photoelectrochemical measurements revealed that the 2D/2D WO 3 /ZnIn 2 S 4 Sscheme heterojunction significantly enhanced the separation efficiency of photogenerated carriers and effectively improved the redox ability of the photocatalyst. Density functional theory calculations were employed to analyze the electron transfer pathways and the formation of the built-in electric field at the 2D/2D WO 3 /ZnIn 2 S 4 interface, confirming that the heterojunction structure accelerated the transfer of photogenerated electrons from WO 3 to ZnIn 2 S 4 . The CO 2 photoreduction process was further investigated by in situ FTIR. Finally, a possible S-scheme electron transfer mechanism at the 2D−2D WO 3 /ZnIn 2 S 4 interface during the CO 2 photoreduction reaction was proposed and discussed.

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“…Therefore, PFOA can be effectively photodegraded in the absence of O 2 [ 128 ]. However, a recent study by Lashuk et al [ 129 ] reported that photocatalytic ozonation inefficiently degraded PFAS with WO 3 /TiO 2 under UVA-visible radiation, where the degradation efficiency was comparable to photocatalysis.…”

Section: Photocatalytic Degradation Of Pfasmentioning

confidence: 99%

Photodegradation and photocatalysis of per- and polyfluoroalkyl substances (PFAS): A review of recent progress

Verma,

Mezgebe,

Hejase

et al. 2024

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Application of photocatalytic ozonation with a WO3/TiO2 catalyst for PFAS removal under UVA/visible light

Cited by 35 publications

References 79 publications

A Critical Review on PFAS Removal from Water: Removal Mechanism and Future Challenges

A Critical Review on PFAS Removal from Water: Removal Mechanism and Future Challenges

WO₃ Nanosheet/ZnIn₂S₄ S-Scheme Heterojunctions for Enhanced CO₂ Photoreduction

Photodegradation and photocatalysis of per- and polyfluoroalkyl substances (PFAS): A review of recent progress

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Application of photocatalytic ozonation with a WO3/TiO2 catalyst for PFAS removal under UVA/visible light

Cited by 35 publications

References 79 publications

A Critical Review on PFAS Removal from Water: Removal Mechanism and Future Challenges

A Critical Review on PFAS Removal from Water: Removal Mechanism and Future Challenges

WO3 Nanosheet/ZnIn2S4 S-Scheme Heterojunctions for Enhanced CO2 Photoreduction

Photodegradation and photocatalysis of per- and polyfluoroalkyl substances (PFAS): A review of recent progress

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WO₃ Nanosheet/ZnIn₂S₄ S-Scheme Heterojunctions for Enhanced CO₂ Photoreduction