Halogen-induced polymorphic Bi2WO6-xhalogen2x with highly photocatalytic performance and mechanism investigation

Li, Wenliang; Qi, Kai; Wang, Yan; Wen, Fusheng; Wang, Jiqian

doi:10.1016/j.apsusc.2022.154160

Cited by 13 publications

(1 citation statement)

References 38 publications

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“…12 Several strategies have been examined to increase the photocatalytic activity of Bi 2 WO 6 . 6 One of the interesting strategies is doping in the crystal lattice with various atoms such as Mo, 13 Fe, 14 Co, 15 Zr, 16 Nb, 17 Yb, 18 N, 19 halogen, 20 Ce−F, 21 and Sm−N. 22 Heteroatom doping often regulates the electronic structure, controls the band gap, and/or improves charge separation, leading to enhanced activities.…”

Section: Introductionmentioning

confidence: 99%

Controlling the Photocatalytic Activity and Benzylamine Photooxidation Selectivity of Bi₂WO₆ via Ion Substitution: Effects of Electronegativity

et al. 2023

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Doping or ion substitution is often used as an effective strategy to improve photocatalytic activities of several semiconductors. Most frequently, the dopants provide extra states to increase light absorption, alter the electronic structure, or lower the carrier recombination. This work focuses on ion substitution in Bi 2 WO 6 , where the dopants modify band-edge potentials of the catalysts. Specifically, we investigate how the electronegativity (EN) of the dopant could be used to tune the band-edge potentials and how such changes influence the photocatalytic mechanism. Compared to Te that has a lower EN, I lowers the band-edge potentials. While substitutions with both ions enhance Rh B photodegradation and benzylamine photooxidation, the modified band potentials of I-doped Bi 2 WO 6 influence the benzylamine photooxidation pathway, resulting in higher selectivity. Additionally, substitution of I 7+ in the Bi 2 WO 6 lattice improves the morphologies, decreases the band-gap energy, and reduces the carrier recombination. As a result, I-doped Bi 2 WO 6 shows almost 3 times higher %conversion while maintaining 100% selectivity in the oxidative coupling of benzylamine. The findings here signify the importance of the choices of dopants on the photocatalytic reactions and would benefit the design of other related materials for such applications.

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Section: Introductionmentioning

confidence: 99%

Controlling the Photocatalytic Activity and Benzylamine Photooxidation Selectivity of Bi₂WO₆ via Ion Substitution: Effects of Electronegativity

et al. 2023

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A Review on Bi₂WO₆‐Based Materials for Photocatalytic CO₂ Reduction

Li,

Liu,

Zhu

et al. 2024

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Photocatalytic reduction of CO2 (PCR) technology offers the capacity to transmute solar energy into chemical energy through an eco‐friendly and efficacious process, concurrently facilitating energy storage and carbon diminution, this innovation harbors significant potential for mitigating energy shortages and ameliorating environmental degradation. Bismuth tungstate (Bi2WO6) is distinguished by its robust visible light absorption and distinctive perovskite‐type crystal architecture, rendering it highly efficiency in PCR. In recent years, numerous systematic strategies have been investigated for the synthesis and modification of Bi2WO6 to enhance its photocatalytic performance, aiming to achieve superior applications. This review provides a comprehensive review of the latest research progress on Bi2WO6 based materials in the field of photocatalysis. Firstly, outlining the fundamental principles, associated reaction mechanisms and reduction pathways of PCR. Then, the synthesis strategy of Bi2WO6‐based materials is introduced for the regulation of its photocatalytic properties. Furthermore, accentuating the extant applications in CO2 reduction, including metal‐Bi2WO6, semiconductor‐Bi2WO6 and carbon‐based Bi2WO6 composites etc. while concludes with an examination of the future landscape and challenges faced. This review hopes to serve as an effective reference for the continuous improvement and implementation of Bi2WO6‐based photocatalysts in PCR.

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Novel Br-doped Bi2WO6 photocatalyst for high-efficiency removal of norfloxacin: mechanism and photocatalytic activity

Li,

Zhu,

Chen

et al. 2024

Environ Sci Pollut Res

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Halogen-induced polymorphic Bi2WO6-xhalogen2x with highly photocatalytic performance and mechanism investigation

Cited by 13 publications

References 38 publications

Controlling the Photocatalytic Activity and Benzylamine Photooxidation Selectivity of Bi₂WO₆ via Ion Substitution: Effects of Electronegativity

Controlling the Photocatalytic Activity and Benzylamine Photooxidation Selectivity of Bi₂WO₆ via Ion Substitution: Effects of Electronegativity

A Review on Bi₂WO₆‐Based Materials for Photocatalytic CO₂ Reduction

Novel Br-doped Bi2WO6 photocatalyst for high-efficiency removal of norfloxacin: mechanism and photocatalytic activity

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Halogen-induced polymorphic Bi2WO6-xhalogen2x with highly photocatalytic performance and mechanism investigation

Cited by 13 publications

References 38 publications

Controlling the Photocatalytic Activity and Benzylamine Photooxidation Selectivity of Bi2WO6 via Ion Substitution: Effects of Electronegativity

Controlling the Photocatalytic Activity and Benzylamine Photooxidation Selectivity of Bi2WO6 via Ion Substitution: Effects of Electronegativity

A Review on Bi2WO6‐Based Materials for Photocatalytic CO2 Reduction

Novel Br-doped Bi2WO6 photocatalyst for high-efficiency removal of norfloxacin: mechanism and photocatalytic activity

Contact Info

Product

Resources

About

Controlling the Photocatalytic Activity and Benzylamine Photooxidation Selectivity of Bi₂WO₆ via Ion Substitution: Effects of Electronegativity

Controlling the Photocatalytic Activity and Benzylamine Photooxidation Selectivity of Bi₂WO₆ via Ion Substitution: Effects of Electronegativity

A Review on Bi₂WO₆‐Based Materials for Photocatalytic CO₂ Reduction