Z-scheme Au@TiO2/Bi2WO6 heterojunction as efficient visible-light photocatalyst for degradation of antibiotics

Jin, Kejie; Qin, Mian; Wang, Rui; Wang, Huan

doi:10.1016/j.molliq.2022.120017

Cited by 30 publications

(9 citation statements)

References 56 publications

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“…Figure 9 d shows the transient photocurrent response curves of different samples. Generally, the stronger the photocurrent is, the better the photogenerated charge carriers of the catalyst can capture light, and the higher the separation efficiency [ 59 , 60 ]. During 50 s of irradiation, all samples exhibited a fast and stable transient photocurrent response.…”

Section: Resultsmentioning

confidence: 99%

Facile Synthesis to Porous TiO2 Nanostructures at Low Temperature for Efficient Visible-Light Degradation of Tetracycline

Lian,

Qin,

Liu

et al. 2024

Nanomaterials

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In this study, nanoporous TiO2 with hierarchical micro/nanostructures was synthesized on a large scale by a facile one-step solvothermal method at a low temperature. A series of characterizations was performed and carried out on the as-prepared photocatalysts, which were applied to the degradation of the antibiotic tetracycline (TC). The results demonstrated that nanoporous TiO2 obtained at a solvothermal temperature of 100 °C had a spherical morphology with high crystallinity and a relatively large specific surface area, composed of a large number of nanospheres. The nanoporous TiO2 with hierarchical micro/nanostructures exhibited excellent photocatalytic degradation activity for TC under simulated sunlight. The degradation rate was close to 100% after 30 min of UV light irradiation, and reached 79% only after 60 min of visible light irradiation, which was much better than the photodegradation performance of commercial TiO2 (only 29%). Moreover, the possible intermediates formed during the photocatalytic degradation of TC were explored by the density functional theory calculations and HPLC-MS spectra. Furthermore, two possible degradation routes were proposed, which provided experimental and theoretical support for the photocatalytic degradation of TC. In this study, we provide a new approach for the hierarchical micro/nanostructure of nanoporous TiO2, which can be applied in industrial manufacturing fields.

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Section: Resultsmentioning

confidence: 99%

Facile Synthesis to Porous TiO2 Nanostructures at Low Temperature for Efficient Visible-Light Degradation of Tetracycline

Lian,

Qin,

Liu

et al. 2024

Nanomaterials

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“…These factors increase the absorption range of visible light and accelerate the transfer and separation of charge carriers between the catalysts. Jin et al 57 created a Z-scheme Au@TiO 2 /Bi 2 WO 6 heterojunction to break down antibiotics. Bi, Ti, and Ag contribute to the plasmon resonance effect which enhances the photocatalytic activity of the heterojunction.…”

Section: ■ Photocatalytic Degradation Mechanisms In Z-and S-scheme He...mentioning

confidence: 99%

“…These changes directly influence the materials’ optical absorption, charge carrier dynamics, surface reactivity, and catalytic performance. The most common methods used to synthesize BBSc photocatalysts include solvothermal/hydrothermal methods, , coprecipitation methods, sol–gel method, , solid-state thermolysis, stepwise deposition techniques, in situ growth, and photoreduction techniques. This work aims to review the recent studies on BBZSH photocatalysts for treating contaminated water.…”

Section: Introductionmentioning

confidence: 99%

Bismuth-Based Z-Scheme Heterojunction Photocatalysts for Remediation of Contaminated Water

Wakjira,

Gemta,

Kassahun

et al. 2024

ACS Omega

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Agricultural runoff, fuel spillages, urbanization, hospitalization, and industrialization are some of the serious problems currently facing the world. In particular, byproducts that are hazardous to the ecosystem have the potential to mix with water used for drinking. Over the last three decades, various techniques, including biodegradation, advanced oxidation processes (AOPs), (e.g., photocatalysis, photo-Fenton oxidation, Fenton-like oxidation, and electrochemical oxidation process adsorption), filtration, and adsorption techniques, have been developed to remove hazardous byproducts. Among those, AOPs, photocatalysis has received special attention from the scientific community because of its unusual properties at the nanoscale and its layered structure. Recently, bismuth based semiconductor (BBSc) photocatalysts have played an important role in solving global energy demand and environmental pollution problems. In particular, bismuth-based Z-scheme heterojunction (BBZSH) is considered the best alternative route to overhaul the limitations of singlecomponent BBSc photocatalysts. This work aims to review recent studies on a new type of BBZSH photocatalysts for the treatment of contaminated water. The general overview of the synthesis methods, efficiencyenhancing strategies, classifications of BBSc and Z-scheme heterojunctions, the degradation mechanisms of Z-and S-schemes, and the application of BBZSH photocatalysts for the degradation of organic dyes, antibiotics, aromatics compounds, endocrinedisrupting compounds, and volatile organic compounds are reviewed. Finally, challenges and the future perspective of BBZSH photocatalysts are discussed.

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“…When utilized for the degradation of Rh B and phenol, the ternary composite presented optimum photocatalytic activity under visible light, much better than Ag/AgBr and pure Bi 2 WO 6 . Jin et al [106] prepared a Au@TiO 2 /Bi 2 WO 6 composite via a sol-gel method followed by hydrothermal reaction. In this ternary system, core-shell structured Au@TiO 2 nanoparticles were dispersed on flower-like Bi 2 WO 6 nanosheets.…”

Section: The Composite Of Bi 2 Wo 6 /Carbon/other Materialsmentioning

confidence: 99%

Advances in Bi2WO6-Based Photocatalysts for Degradation of Organic Pollutants

Jiang¹,

Deng

et al. 2022

Molecules

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With the rapid development of modern industries, water pollution has become an urgent problem that endangers the health of human and wild animals. The photocatalysis technique is considered an environmentally friendly strategy for removing organic pollutants in wastewater. As an important member of Bi-series semiconductors, Bi2WO6 is widely used for fabricating high-performance photocatalysts. In this review, the recent advances of Bi2WO6-based photocatalysts are summarized. First, the controllable synthesis, surface modification and heteroatom doping of Bi2WO6 are introduced. In the respect of Bi2WO6-based composites, existing Bi2WO6-containing binary composites are classified into six types, including Bi2WO6/carbon or MOF composite, Bi2WO6/g-C3N4 composite, Bi2WO6/metal oxides composite, Bi2WO6/metal sulfides composite, Bi2WO6/Bi-series composite, and Bi2WO6/metal tungstates composite. Bi2WO6-based ternary composites are classified into four types, including Bi2WO6/g-C3N4/X, Bi2WO6/carbon/X, Bi2WO6/Au or Ag-based materials/X, and Bi2WO6/Bi-series semiconductors/X. The design, microstructure, and photocatalytic performance of Bi2WO6-based binary and ternary composites are highlighted. Finally, aimed at the existing problems in Bi2WO6-based photocatalysts, some solutions and promising research trends are proposed that would provide theoretical and practical guidelines for developing high-performance Bi2WO6-based photocatalysts.

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Z-scheme Au@TiO2/Bi2WO6 heterojunction as efficient visible-light photocatalyst for degradation of antibiotics

Cited by 30 publications

References 56 publications

Facile Synthesis to Porous TiO2 Nanostructures at Low Temperature for Efficient Visible-Light Degradation of Tetracycline

Facile Synthesis to Porous TiO2 Nanostructures at Low Temperature for Efficient Visible-Light Degradation of Tetracycline

Bismuth-Based Z-Scheme Heterojunction Photocatalysts for Remediation of Contaminated Water

Advances in Bi2WO6-Based Photocatalysts for Degradation of Organic Pollutants

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