Strategies to improve WO3-based photocatalysts for wastewater treatment: a review

Liao, Meiju; Su, Long; Deng, Yaocheng; Xiong, Sheng; Tang, Rongdi; Wu, Zhibin; Ding, Chunmei; Yang, Lihua

doi:10.1007/s10853-021-06202-8

Cited by 59 publications

(14 citation statements)

References 128 publications

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“…[226] Several methods to lower energy wavelengths, extending the photoactivity to the visible range, were realized by incorporation of transition metals [227] or introducing nonmetal dopants [228,229] to create oxygen vacancies or low-lying interband states. [230] Beyond modified TiO 2 , some other semiconductors that have been evaluated as substitute photocatalysts with visible light activity include WO 3 , [231] C 3 N 4 , [232] and perovskites. [233] Heavy-metal ions accumulated in water circulation systems are a significant challenge, but also represent a potential resource to be recovered.…”

Section: Photocatalystsmentioning

confidence: 99%

Material Design Strategies for Recovery of Critical Resources from Water

et al. 2023

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Population growth, urbanization, and decarbonization efforts are collectively straining the supply of limited resources that are necessary to produce batteries, electronics, chemicals, fertilizers, and other important products. Securing the supply chains of these critical resources via the development of separation technologies for their recovery represents a major global challenge to ensure stability and security. Surface water, groundwater, and wastewater are emerging as potential new sources to bolster these supply chains. Recently, a variety of material‐based technologies have been developed and employed for separations and resource recovery in water. Judicious selection and design of these materials to tune their properties for targeting specific solutes is central to realizing the potential of water as a source for critical resources. Here, the materials that are developed for membranes, sorbents, catalysts, electrodes, and interfacial solar steam generators that demonstrate promise for applications in critical resource recovery are reviewed. In addition, a critical perspective is offered on the grand challenges and key research directions that need to be addressed to improve their practical viability.

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Section: Photocatalystsmentioning

confidence: 99%

Material Design Strategies for Recovery of Critical Resources from Water

et al. 2023

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“…In this context, designing WO 3 structures for PC oxidation of organic compounds has attracted much attention recently [11] . WO 3 consists of WO 6 octahedra units via variable connected methods, which produce many crystalline such as hexagonal, monoclinic, orthorhombic, tetragonal, and triclinic phases.…”

Section: Introductionmentioning

confidence: 99%

“…In this context, designing WO 3 structures for PC oxidation of organic compounds has attracted much attention recently. [11] WO 3 consists of WO 6 octahedra units via variable connected methods, which produce many crystalline such as hexagonal, monoclinic, orthorhombic, tetragonal, and triclinic phases. The WO 3 catalysts with the hexagonal and monoclinic phases have been frequently used for PC selective oxidations because they are relatively stable and easily available.…”

Section: Introductionmentioning

confidence: 99%

WO₃‐based Materials for Photocatalytic and Photoelectrocatalytic Selective Oxidation Reactions

Wang,

Einaga

2023

ChemCatChem

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Selective oxidation reactions are crucial in producing various chemicals in the industry. However, most catalytic processes for these reactions use harsh reaction conditions. Recently, heterogeneous photo(electro)catalysis has been considered promising for selective oxidation reactions under mild conditions. Semiconductor materials are frequently used as heterogeneous photocatalysts because they can produce active species that contribute to the oxidation of organic compounds under light irradiation. Among various semiconductor photocatalysts, tungsten oxide (WO3) is one of the most promising candidates due to its advantages, including high stability, wide light adsorption range, proper band structures, and unique catalytic mechanism. This paper reviews the WO3‐based materials for photocatalytic (PC) and photoelectrocatalytic (PEC) selective oxidations. We summarize the strategies for designing WO3 structures, which include morphology control, crystal facet optimization, and defect engineering. Then, the finely designed WO3 structures for PC and PEC oxidation of several typical organic compounds have been discussed based on catalytic mechanism and performance. Finally, we propose the prospects and challenges of WO3 photocatalysts and photoanodes in selective oxidation reactions.

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“…The photochromic properties of WO 3 have also been recently reviewed [ 3 ]. Throughout the years, other fields of interest have emerged, such as solar hydrogen generation [ 4 , 5 ], the photoelectrochemical [ 6 , 7 ] and photocatalytic [ 8 , 9 , 10 ] properties of WO 3 , water remediation [ 11 , 12 , 13 ] and energy storage [ 14 , 15 ]. Along with these recently emerging applications, the field of gas sensing was one of the earliest applications of WO 3 together with electrochromic devices.…”

Section: Introductionmentioning

confidence: 99%

Mechanistic Insights into WO3 Sensing and Related Perspectives

Epifani

2022

Sensors

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Tungsten trioxide (WO3) is taking on an increasing level of importance as an active material for chemoresistive sensors. However, many different issues have to be considered when trying to understand the sensing properties of WO3 in order to rationally design sensing devices. In this review, several key points are critically summarized. After a quick review of the sensing results, showing the most timely trends, the complex system of crystallographic WO3 phase transitions is considered, with reference to the phases possibly involved in gas sensing. Appropriate attention is given to related investigations of first principles, since they have been shown to be a solid support for understanding the physical properties of crucially important systems. Then, the surface properties of WO3 are considered from both an experimental and first principles point of view, with reference to the paramount importance of oxygen vacancies. Finally, the few investigations of the sensing mechanisms of WO3 are discussed, showing a promising convergence between the proposed hypotheses and several experimental and theoretical studies presented in the previous sections.

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Strategies to improve WO3-based photocatalysts for wastewater treatment: a review

Cited by 59 publications

References 128 publications

Material Design Strategies for Recovery of Critical Resources from Water

Material Design Strategies for Recovery of Critical Resources from Water

WO₃‐based Materials for Photocatalytic and Photoelectrocatalytic Selective Oxidation Reactions

Mechanistic Insights into WO3 Sensing and Related Perspectives

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Strategies to improve WO3-based photocatalysts for wastewater treatment: a review

Cited by 59 publications

References 128 publications

Material Design Strategies for Recovery of Critical Resources from Water

Material Design Strategies for Recovery of Critical Resources from Water

WO3‐based Materials for Photocatalytic and Photoelectrocatalytic Selective Oxidation Reactions

Mechanistic Insights into WO3 Sensing and Related Perspectives

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Product

Resources

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WO₃‐based Materials for Photocatalytic and Photoelectrocatalytic Selective Oxidation Reactions