Study of photocatalytic activities of Bi2WO6/BiVO4 nanocomposites

Phú, Nguyễn Đăng; Hoàng, Lục Huy; Guo, Ping; Chen, Xiang‐Bai; Chou, Wu–Ching

doi:10.1007/s10971-017-4450-8

Cited by 13 publications

(3 citation statements)

References 45 publications

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“…As a significant semiconductor photocatalytic material, Bi 2 WO 6 is the simplest compound in the Aurivillius family, which is alternately composed of [Bi 2 O 2 ] 2+ layers and perovskite-like (WO 4 ) 2− octahedral layers, and is widely used in PEC oxidation [ 3 , 7 ]. As a narrow band gap semiconductor (2.75 eV), Bi 2 WO 6 has the advantages of a non-toxic, high-stability, and visible-light response [ 8 , 9 , 10 ]. Nevertheless, this material exhibits certain drawbacks, such as a high rate of electron and hole recombination, a low specific surface area, and a tendency towards easy agglomeration [ 4 , 11 , 12 ].…”

Section: Introductionmentioning

confidence: 99%

LDH/MXene Synergistic Carrier Separation Effects to Improve the Photoelectric Catalytic Activities of Bi2WO6 Nanosheet Arrays

Wang,

Li,

Zhang

et al. 2024

Nanomaterials

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Photoelectric catalysis is a green and efficient way to degrade pollutants, which has been paid more and more attention by researchers. Among them, Bi2WO3 has been proved to have excellent photocatalytic oxidation activity on its {001} facets. In this study, {001}-oriented facets with high exposure were successfully integrated into Bi2WO6 nanoplate arrays (Bi2WO6 NAs) to create a photoelectrode. This structure was grown in situ on an indium tin oxide (ITO) substrate. To promote photogenerated carrier separation efficiency and reduce agglomeration of Bi2WO6 photocatalysts, the electrochemical deposition of NiFe–layered double hydroxide (NiFe-LDH) and Ti3C2 (MXene) were introduced in this research to synergistically catalyze pollutant degradation. Morphology, spectral characterization, and electrochemical analysis jointly confirmed that the outstanding performance of hole capture behavior with LDH and electron conduction properties with MXene were the main reasons for the improvement in catalytic activity of the photoelectrode. Taking bisphenol A (BPA) as the model pollutant, the rate constant k of the NiFe-LDH/Ti3C2/Bi2WO6 NAs photoelectrode reaches 0.00196 min−1 under photoelectrocatalytic (PEC) conditions, which is 4.5 times that of the pure Bi2WO6 NAs photoelectrode. This work provides a new way to improve the reaction kinetics of the PEC degradation of pollutants.

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Section: Introductionmentioning

confidence: 99%

LDH/MXene Synergistic Carrier Separation Effects to Improve the Photoelectric Catalytic Activities of Bi2WO6 Nanosheet Arrays

Wang,

Li,

Zhang

et al. 2024

Nanomaterials

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“…Considering its convenient synthesis, unique photoelectric performance and catalysis, it has attracted extensive attention. 23 Although Bi 2 WO 6 can absorb visible light, it has the disadvantages of low quantum efficiency and high recombination rate of photogenerated carriers, which greatly limits its practical application. 24,25 To improve the photocatalytic activity of Bi 2 WO 6 , various improvement strategies have been proposed, including metal and nonmetal element doping and heterostructure construction.…”

Section: Introductionmentioning

confidence: 99%

Construction of a Bi₂WO₆/BiVO₄ photocatalytic system for efficient visible light degradation of tetracycline drugs

et al. 2023

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“…0.51 eV) [13]. Thus, plenty of attempts have been carried out to improve the photocatalytic activity of Bi 2 WO 6 such as controlling morphology [14], elemental doping [15] and building heterojunctions [16, 17]. Carbon materials have attracted widespread attention for designing photocatalysts due to their excellent ability to store/deliver electrons [11].…”

Section: Introductionmentioning

confidence: 99%

Carbon quantum dots modified Bi ₂ WO ₆ nanoflowers for enhancing photocatalytic activity: an experimental and DFT study

Song

et al. 2020

Micro & Nano Letters

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Carbon quantum dots (CQDs) decorated Bi 2 WO6 nanocomposites were successfully synthesised by a facile hydrothermal method. The prepared samples were characterised by the XRD, FESEM, TEM, XPS, UV-vis DRS, photocurrent and photoluminescence (PL) techniques. The DRS, photocurrent, PL spectra measurements reveal that the introduction of CQDs could broaden the absorption edge and accelerate the separation and transportation efficiency of carriers. Moreover, a reasonable charge transfer approach was given out based on the calculated work function and the differential charge difference. The CQDs/Bi 2 WO 6-2 sample provides the optimal activity for photodegradation of CIP under simulated sunlight irradiation. It is hopeful that this work not only gives a reference for the design of CQDs/Bi 2 WO 6 composites, but also provides some mechanistic insights into enhanced photoactivity.

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Study of photocatalytic activities of Bi2WO6/BiVO4 nanocomposites

Cited by 13 publications

References 45 publications

LDH/MXene Synergistic Carrier Separation Effects to Improve the Photoelectric Catalytic Activities of Bi2WO6 Nanosheet Arrays

LDH/MXene Synergistic Carrier Separation Effects to Improve the Photoelectric Catalytic Activities of Bi2WO6 Nanosheet Arrays

Construction of a Bi₂WO₆/BiVO₄ photocatalytic system for efficient visible light degradation of tetracycline drugs

Carbon quantum dots modified Bi ₂ WO ₆ nanoflowers for enhancing photocatalytic activity: an experimental and DFT study

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Study of photocatalytic activities of Bi2WO6/BiVO4 nanocomposites

Cited by 13 publications

References 45 publications

LDH/MXene Synergistic Carrier Separation Effects to Improve the Photoelectric Catalytic Activities of Bi2WO6 Nanosheet Arrays

LDH/MXene Synergistic Carrier Separation Effects to Improve the Photoelectric Catalytic Activities of Bi2WO6 Nanosheet Arrays

Construction of a Bi2WO6/BiVO4 photocatalytic system for efficient visible light degradation of tetracycline drugs

Carbon quantum dots modified Bi 2 WO 6 nanoflowers for enhancing photocatalytic activity: an experimental and DFT study

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Construction of a Bi₂WO₆/BiVO₄ photocatalytic system for efficient visible light degradation of tetracycline drugs

Carbon quantum dots modified Bi ₂ WO ₆ nanoflowers for enhancing photocatalytic activity: an experimental and DFT study