Photocatalytic removal of ammonia nitrogen from water: investigations and challenges for enhanced activity

Zhang, Huining; Cao, Yang; Wang, Shaofeng; Tang, Yuling; Tian, Lihong; Cai, Wenrui; Wei, Zhiqiang; Wu, Zhiguo; Zhu, Ying; Guo, Qi

doi:10.1007/s11356-024-33891-w

Cited by 1 publication

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References 139 publications

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“…Combined with the above calculations, the conduction and valence band positions ( E CB / E VB ) of WO 3 and Bi 2 MoO 6 can be obtained to be 0.88 eV/3.41 and 0.30 eV/3.10 eV, respectively. Based on the radical trapping experiments as well as the ESR test, the photocatalytic degradation mechanism of Z-scheme heterojunctions has been deduced . Under visible light irradiation, the photogenerated electrons (e – ) in the VB of WO 3 and Bi 2 MoO 6 were excited to the CB, and h + was left behind.…”

Section: Resultsmentioning

confidence: 99%

“…Based on the radical trapping experiments as well as the ESR test, the photocatalytic degradation mechanism of Z-scheme heterojunctions has been deduced. 68 Under visible light irradiation, the photogenerated electrons (e − ) in the VB of WO 3 and Bi 2 MoO 6 were excited to the CB, and h + was left behind. Under the action of the internal electric field, 69 − and • OH.…”

Section: Photocatalytic Treatment Of Actual Wastewatermentioning

confidence: 99%

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Stable and Flexible Polyurethane Membranes with WO₃/Bi₂MoO₆ Nanoparticles for the Photocatalytic Degradation of 2,4-Dichlorophenol

Zhang,

Tang,

Cao

et al. 2024

ACS Appl. Nano Mater.

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The objective of this work is to develop a microsomal composite catalytic membrane that exhibits efficient catalytic capabilities and robust stability, thereby addressing the challenge of recycling and reusing powdered photocatalytic materials. Specifically, Bi 2 MoO 6 and WO 3 nanoparticles were incorporated onto polyurethane (PU) substrates using a hybrid in situ growth method. By forming Bi 2 MoO 6 /WO 3 heterojunctions, the photocatalytic activity of the membrane was enhanced without compromising its structural integrity. The flexibility and porosity of PUs play a crucial role in facilitating the adsorption of 2,4dichlorophenol (DCP) molecules on the membrane's surface, leading to the efficient degradation of contaminants through the cleavage of C−Cl bonds triggered by the migration of electron pairs generated by the photocatalysts. A 5 × 5 cm composite membrane was tested for degradation in 20 mg/L 2,4-DCP solutions with neutral pH, achieving a degradation rate of 78.8% within 120 min. The composite membrane exhibited stability after undergoing six cycles of testing, affirming the effectiveness of its composition. Furthermore, a detailed analysis was conducted on the photocatalytic reaction mechanism of 2,4-DCP on the WO 3 /Bi 2 MoO 6 /PU membrane surface, highlighting the potential of porous composite membranes for wastewater treatment.

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Section: Resultsmentioning

confidence: 99%

Section: Photocatalytic Treatment Of Actual Wastewatermentioning

confidence: 99%

Stable and Flexible Polyurethane Membranes with WO₃/Bi₂MoO₆ Nanoparticles for the Photocatalytic Degradation of 2,4-Dichlorophenol

Zhang,

Tang,

Cao

et al. 2024

ACS Appl. Nano Mater.

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View full text Add to dashboard Cite

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Photocatalytic removal of ammonia nitrogen from water: investigations and challenges for enhanced activity

Cited by 1 publication

References 139 publications

Stable and Flexible Polyurethane Membranes with WO₃/Bi₂MoO₆ Nanoparticles for the Photocatalytic Degradation of 2,4-Dichlorophenol

Stable and Flexible Polyurethane Membranes with WO₃/Bi₂MoO₆ Nanoparticles for the Photocatalytic Degradation of 2,4-Dichlorophenol

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Photocatalytic removal of ammonia nitrogen from water: investigations and challenges for enhanced activity

Cited by 1 publication

References 139 publications

Stable and Flexible Polyurethane Membranes with WO3/Bi2MoO6 Nanoparticles for the Photocatalytic Degradation of 2,4-Dichlorophenol

Stable and Flexible Polyurethane Membranes with WO3/Bi2MoO6 Nanoparticles for the Photocatalytic Degradation of 2,4-Dichlorophenol

Contact Info

Product

Resources

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Stable and Flexible Polyurethane Membranes with WO₃/Bi₂MoO₆ Nanoparticles for the Photocatalytic Degradation of 2,4-Dichlorophenol

Stable and Flexible Polyurethane Membranes with WO₃/Bi₂MoO₆ Nanoparticles for the Photocatalytic Degradation of 2,4-Dichlorophenol