Experimental and molecular dynamics investigations on Z-scheme visible light Ag3PO4/CuWO4 photocatalysts for antibiotic degradation

Jatav, Neha; Shrivastava, Anshu; De, Arup Kumar; Sinha, Indrajit

doi:10.1016/j.jece.2022.107975

Cited by 22 publications

(5 citation statements)

References 38 publications

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“…In recent years, turnover frequency (TOF) has been widely used to evaluate the intrinsic activity of catalysts. Therefore, we also calculated the TOF of CB‐2, and the value is 5.9×10 −3 mol/(g ⋅ min), which shows a better activity compared with the reported materials [42] …”

Section: Resultsmentioning

confidence: 94%

“…Therefore, we also calculated the TOF of CB-2, and the value is 5.9×10 À 3 mol/ (g • min), which shows a better activity compared with the reported materials. [42] Analyzing the effect of PMS on the photocatalytic process of the Co 3 O 4 /Bi 2 MoO 6 system, a photocatalytic experiment was carried out without adding PMS in the same test environment (as shown in Figure 5c). It can be found from the figure that within 30 min, the degradation rate of all photocatalysts to EFA did not reach 50 %.…”

Section: Photocatalytic Degradation Of Efamentioning

confidence: 99%

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Preparation of a Co₃O₄/Bi₂MoO₆ P‐N‐Type Heterojunction with Enhanced Photocatalytic Activity and Synergistic PMS Enrofloxacin Degradation

Li,

Su,

Chen

et al. 2024

ChemistrySelect

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In this work, Co3O4/Bi2MoO6 p‐n‐type heterojunctions were successfully fabricated via a hydrothermal method combined with in‐situ deposition. The as‐prepared samples were systematically characterized by means of SEM, TEM, XPS, XRD, etc. Through the synergistic effect of PMS (peroxosulfate monosalt), the obtained composite CB‐2 has a superior degradation performance of enrofloxacin under visible light irradiation, and the degradation rate of enrofloxacin reaches 87.84 % within 30 min. The reaction process of enrofloxacin degradation was analyzed by 3D EEM (exception emission matrix spectrum) and LC–MS (liquid phase mass spectrometry). The influence of the reaction system on EFA degradation efficiency without PMS synergy and light was studied. The kind of free radical was determined from the outcome of the EPR and free radical capture experiment. Benefiting from the construction of the p‐n heterojunction system and the activation of the PMS, the photogenerated carriers of the Co3O4/Bi2MoO6 composite can be fully separated and transferred to produce active species with higher oxidative properties. Based on this, the photocatalytic mechanism of Co3O4/Bi2MoO6/PMS was explored.

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Section: Resultsmentioning

confidence: 94%

Section: Photocatalytic Degradation Of Efamentioning

confidence: 99%

Preparation of a Co₃O₄/Bi₂MoO₆ P‐N‐Type Heterojunction with Enhanced Photocatalytic Activity and Synergistic PMS Enrofloxacin Degradation

Li,

Su,

Chen

et al. 2024

ChemistrySelect

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“…High-resolution spectra of the WO 3 /CuWO 4 /Ag sample were deconvoluted and are presented in Figure b–e. The high-resolution XPS spectra of W 4f show two distinct peaks emerged around 35.45 and 37.58 eV along with a very weak peak of about 41.31 eV corresponding to the spin–orbit splitting of W 4f 7/2 , W 4f 5/2 , and W 5p 3/2 for the W 6+ oxidation state, respectively . The deconvolution of Cu 2p high-resolution XPS spectra displays four distinct peaks around 934.1, 943.0, 954.0, and 961.6 eV, which are attributed to the Cu 2+ species presented in the electronic structure of CuWO 4 . , The peaks at 931.6 and 934.1 eV belong to Cu 2p 3/2 and 951.2 and 954.0 eV correspond to Cu 2p 1/2 .…”

Section: Resultsmentioning

confidence: 97%

Silver-Boosted WO₃/CuWO₄ Heterojunction Thin Films for Enhanced Photoelectrochemical Water Splitting Efficiency

Loka

Devarajulu

Vattikuti

et al. 2023

ACS Sustainable Chem. Eng.

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The enhancement of efficient, visible-light active photoanodes is vital for advancing photoelectrochemical (PEC) water splitting as a sustainable and environmentally friendly energy alternative. In this study, we explore the potential of WO 3 / CuWO 4 /Ag heterojunction thin films fabricated by magnetron sputtering on n-Si substrates as viable photoanodes. The synergetic effects of heterojunction formation and Ag nanoparticle dispersion contribute to superior visible-light absorption, charge transfer, and separation efficiency. The influence of Ag nanoparticle decoration achieved through solid-state dewetting phenomena was studied in terms of structural and microstructural changes and photoelectrochemical responses. Surface topography observations revealed that the WO 3 /CuWO 4 /Ag thin film exhibited the highest surface area ratio of 22.7%, approximately a threefold increase compared to the pure WO 3 thin films. The photoluminescence (PL) and time-resolved photoluminescence (TRPL) results demonstrated that the heterojunction configuration promotes effective charge separation and an increased carrier lifetime of ∼20.1 ns. PEC analysis showed a substantial enhancement in photocurrent density of 1.53 mA cm −2 (1.0 V vs Ag/AgCl), approximately 2.32 times greater than that of WO 3 , and an increased applied bias photon-to-current efficiency (ABPE) of approximately 0.91%, compared to 0.43% for WO 3 and 0.50% for WO 3 /CuWO 4 photoanodes. Moreover, the WO 3 /CuWO 4 /Ag photoanode demonstrated remarkable long-term stability with a current density of 0.21 mA cm −2 for about 4.5 h. These findings underscore the potential of WO 3 /CuWO 4 /Ag heterojunction photocatalysts for PEC water splitting and emphasize the significance of the synergetic effect of Ag decoration and heterojunction structure formation in achieving clean and sustainable hydrogen production. Additionally, this research may inspire further studies on surface plasmon metal nanoparticle dispersion with controlled size and shape, using a simple solid-state dewetting technique for the development of efficient electrodes in next-generation water splitting applications.

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“…Furthermore, we measured the TOC after photocatalytic degradation by Sims and Haby's method. 54–57 This procedure quantifies the Cr 3+ produced by the reaction of potassium dichromate with antibiotics. The TOC in the sample is directly proportional to the concentration of Cr 3+ produced.…”

Section: Materials Characterizationmentioning

confidence: 99%

“…Furthermore, we measured the TOC after photocatalytic degradation by Sims and Haby's method. [54][55][56][57] This procedure…”

Section: Catalysis Science and Technology Papermentioning

confidence: 99%

Fenton reaction by H₂O₂ produced on a magnetically recyclable Ag/CuWO₄/NiFe₂O₄ photocatalyst

Kumar

Shrivastava

et al. 2023

Catal. Sci. Technol.

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Experimental and molecular dynamics investigations on Z-scheme visible light Ag3PO4/CuWO4 photocatalysts for antibiotic degradation

Cited by 22 publications

References 38 publications

Preparation of a Co₃O₄/Bi₂MoO₆ P‐N‐Type Heterojunction with Enhanced Photocatalytic Activity and Synergistic PMS Enrofloxacin Degradation

Preparation of a Co₃O₄/Bi₂MoO₆ P‐N‐Type Heterojunction with Enhanced Photocatalytic Activity and Synergistic PMS Enrofloxacin Degradation

Silver-Boosted WO₃/CuWO₄ Heterojunction Thin Films for Enhanced Photoelectrochemical Water Splitting Efficiency

Fenton reaction by H₂O₂ produced on a magnetically recyclable Ag/CuWO₄/NiFe₂O₄ photocatalyst

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Experimental and molecular dynamics investigations on Z-scheme visible light Ag3PO4/CuWO4 photocatalysts for antibiotic degradation

Cited by 22 publications

References 38 publications

Preparation of a Co3O4/Bi2MoO6 P‐N‐Type Heterojunction with Enhanced Photocatalytic Activity and Synergistic PMS Enrofloxacin Degradation

Preparation of a Co3O4/Bi2MoO6 P‐N‐Type Heterojunction with Enhanced Photocatalytic Activity and Synergistic PMS Enrofloxacin Degradation

Silver-Boosted WO3/CuWO4 Heterojunction Thin Films for Enhanced Photoelectrochemical Water Splitting Efficiency

Fenton reaction by H2O2 produced on a magnetically recyclable Ag/CuWO4/NiFe2O4 photocatalyst

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Preparation of a Co₃O₄/Bi₂MoO₆ P‐N‐Type Heterojunction with Enhanced Photocatalytic Activity and Synergistic PMS Enrofloxacin Degradation

Preparation of a Co₃O₄/Bi₂MoO₆ P‐N‐Type Heterojunction with Enhanced Photocatalytic Activity and Synergistic PMS Enrofloxacin Degradation

Silver-Boosted WO₃/CuWO₄ Heterojunction Thin Films for Enhanced Photoelectrochemical Water Splitting Efficiency

Fenton reaction by H₂O₂ produced on a magnetically recyclable Ag/CuWO₄/NiFe₂O₄ photocatalyst