Sb2WO6/Bi2WO6 composite photocatalyst prepared by one-step hydrothermal method: Simple synthesis and excellent visible-light photocatalytic performance

Miao, Baoyu; Chu, Yanyang; Zheng, Xianglei; Su, Hongzhao

doi:10.1016/j.mssp.2020.105636

Cited by 41 publications

(9 citation statements)

References 73 publications

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“…The FT-IR spectra of the as-obtained samples were shown in Figure 1 b. The characteristic peaks of pristine Sov−BWO at 581 cm −1 and 726 cm −1 were considered as W–O bonds, while the characteristic peak at 1382 cm −1 was attributed to a W–O–W vibration bond, respectively [ 24 ]. Figure S1b showed that the characteristic peaks of the T−ZIS, Sov−BWO and S 2− doped Sov−BWO/T−ZIS samples were around 1619 cm −1 and 3421 cm −1 , respectively, which were caused by O–H bonds and water molecules adsorbed on the surface [ 25 ].…”

Section: Resultsmentioning

confidence: 99%

Investigation of the Kinetics and Reaction Mechanism for Photodegradation Tetracycline Antibiotics over Sulfur-Doped Bi2WO6-x/ZnIn2S4 Direct Z-Scheme Heterojunction

Jiang

Huang

Wei³

et al. 2021

Nanomaterials

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The rational design of direct Z-scheme heterostructural photocatalysts using solar energy is promising for energy conversion and environmental remediation, which depends on the precise regulation of redox active sites, rapid spatial separation and transport of photoexcited charge and a broad visible light response. The Bi2WO6 materials have been paid more and more attention because of their unique photochemical properties. In this study, S2− doped Bi2WO6-x coupled with twin crystal ZnIn2S4 nanosheets (Sov−BWO/T−ZIS) were prepared as an efficient photocatalyst by a simple hydrothermal method for the removal of tetracycline hydrochloride (TCH). Multiple methods (XRD, TEM, XPS, EPR, UV vis DRS, PL etc.) were employed to systematically investigate the morphology, structure, composition and photochemical properties of the as-prepared samples. The XRD spectrum indicated that the S2− ions were successfully doped into the Sov−BWO component. XPS spectra and photoelectrochemical analysis proved that S2− served as electronic bridge and promoted captured electrons of surface oxygen vacancies transfer to the valence band of T−ZIS. Through both experimental and in situ electron paramagnetic resonance (in situ EPR) characterizations, a defined direct Z-scheme heterojunction in S-BWO/T−ZIS was confirmed. The improved photocatalytic capability of S-BWO/T−ZIS results ascribed that broadened wavelength range of light absorption, rapid separation and interfacial transport of photoexcited charge, precisely regulated redox centers by optimizing the interfacial transport mode. Particularly, the Sov−50BWO/T−ZIS Z-scheme heterojunction exhibited the highest photodegradation rate was 95% under visible light irradiation. Moreover, this heterojunction exhibited a robust adsorption and degradation capacity, providing a promising photocatalyst for an organic pollutant synergistic removal strategy.

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Section: Resultsmentioning

confidence: 99%

Investigation of the Kinetics and Reaction Mechanism for Photodegradation Tetracycline Antibiotics over Sulfur-Doped Bi2WO6-x/ZnIn2S4 Direct Z-Scheme Heterojunction

Jiang

Huang

Wei³

et al. 2021

Nanomaterials

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“…2g) reveals the lattice fringes with a d-spacing equal to 0.34 nm, corresponding to the (11 ˉ1) lattice plane. 41 Furthermore, the inverse fast Fourier transform (IFFT) and line profile of this lattice plane are shown in Fig. 2h and i.…”

Section: Morphological and Compositional Studiesmentioning

confidence: 98%

Tuning of surface oxygen vacancies for enhancing photocatalytic performance under visible light irradiation in Sb₂WO₆ nanostructures

Sharma,

Singh,

Sharma

et al. 2024

Dalton Trans.

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“…Under UV irradiation, the optimized 30% Bi 2 WO 6 /ZnWO 4 delivered the maximum degradation performance for the removal of Plasmocorinth B dye. Miao et al [90] prepared Sb 2 WO 6 /Bi 2 WO 6 composite photocatalysts and evaluated their photocatalytic activity for the degradation of Rh B and MO. The composite showed an increased specific surface area and an enhanced visible-light absorption capability, and it suppressed the recombination of electron-hole pairs.…”

Section: Bi 2 Wo 6 /Metal Tungstates Compositementioning

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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Sb2WO6/Bi2WO6 composite photocatalyst prepared by one-step hydrothermal method: Simple synthesis and excellent visible-light photocatalytic performance

Cited by 41 publications

References 73 publications

Investigation of the Kinetics and Reaction Mechanism for Photodegradation Tetracycline Antibiotics over Sulfur-Doped Bi2WO6-x/ZnIn2S4 Direct Z-Scheme Heterojunction

Investigation of the Kinetics and Reaction Mechanism for Photodegradation Tetracycline Antibiotics over Sulfur-Doped Bi2WO6-x/ZnIn2S4 Direct Z-Scheme Heterojunction

Tuning of surface oxygen vacancies for enhancing photocatalytic performance under visible light irradiation in Sb₂WO₆ nanostructures

Advances in Bi2WO6-Based Photocatalysts for Degradation of Organic Pollutants

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Sb2WO6/Bi2WO6 composite photocatalyst prepared by one-step hydrothermal method: Simple synthesis and excellent visible-light photocatalytic performance

Cited by 41 publications

References 73 publications

Investigation of the Kinetics and Reaction Mechanism for Photodegradation Tetracycline Antibiotics over Sulfur-Doped Bi2WO6-x/ZnIn2S4 Direct Z-Scheme Heterojunction

Investigation of the Kinetics and Reaction Mechanism for Photodegradation Tetracycline Antibiotics over Sulfur-Doped Bi2WO6-x/ZnIn2S4 Direct Z-Scheme Heterojunction

Tuning of surface oxygen vacancies for enhancing photocatalytic performance under visible light irradiation in Sb2WO6 nanostructures

Advances in Bi2WO6-Based Photocatalysts for Degradation of Organic Pollutants

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Tuning of surface oxygen vacancies for enhancing photocatalytic performance under visible light irradiation in Sb₂WO₆ nanostructures