An overview on WO3 based photocatalyst for environmental remediation

Dutta, Vishal; Sharma, Sheetal; Raizada, Pankaj; Thakur, Vijay Kumar; Khan, Aftab Aslam Parwaz; Saini, Vipin; Asiri, Abdullah M.; Singh, Pardeep

doi:10.1016/j.jece.2020.105018

Cited by 158 publications

(42 citation statements)

References 71 publications

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“…At present, nanostructured WO 3 are deposited on various substrates to fabricate optical and electrical devices, such as TiO 2 [ 15 ], NiO [ 16 ], ZnO nanowires (NWs) [ 17 ], diamond [ 14 ], Fe 2 WO 6 [ 8 ], and BiVO 4 [ 18 ]. In the last few years, several review reports have been published based on photo catalysts [ 19 , 20 ], electrochromic devices [ 21 , 22 ], gas sensors [ 23 , 24 ], and oxygen-deficient WO 3 [ 25 ]. However, so far there is no review focusing specifically on nanostructured WO 3 optical and electrical devices.…”

Section: Introductionmentioning

confidence: 99%

A Review on the Properties and Applications of WO3 Nanostructure−Based Optical and Electronic Devices

et al. 2021

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Tungsten oxide (WO3) is a wide band gap semiconductor with unintentionally n−doping performance, excellent conductivity, and high electron hall mobility, which is considered as a candidate material for application in optoelectronics. Several reviews on WO3 and its derivatives for various applications dealing with electrochemical, photoelectrochemical, hybrid photocatalysts, electrochemical energy storage, and gas sensors have appeared recently. Moreover, the nanostructured transition metal oxides have attracted considerable attention in the past decade because of their unique chemical, photochromic, and physical properties leading to numerous other potential applications. Owing to their distinctive photoluminescence (PL), electrochromic and electrical properties, WO3 nanostructure−based optical and electronic devices application have attracted a wide range of research interests. This review mainly focuses on the up−to−date progress in different advanced strategies from fundamental analysis to improve WO3 optoelectric, electrochromic, and photochromic properties in the development of tungsten oxide−based advanced devices for optical and electronic applications including photodetectors, light−emitting diodes (LED), PL properties, electrical properties, and optical information storage. This review on the prior findings of WO3−related optical and electrical devices, as well as concluding remarks and forecasts will help researchers to advance the field of optoelectric applications of nanostructured transition metal oxides.

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Section: Introductionmentioning

confidence: 99%

A Review on the Properties and Applications of WO3 Nanostructure−Based Optical and Electronic Devices

et al. 2021

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“…Photocatalytic technology directly utilizes solar energy to thoroughly degrade and eventually mineralize antibiotics from wastewater [8][9][10]. Yet, semiconductors are used as photocatalysts to eliminate the organic pollutants from wastewater, such as zinc oxide (ZnO), titanium dioxide (TiO 2 ), g-C 3 N 4 , and so on [11][12][13][14][15][16]. However, the wide band gap of semiconductors and the slow rate of photogeneration of electron-hole pairs causes low quantum efficiency restricting the photocatalytic efficiency under visible light [17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Facile Synthesis of Sillén-Aurivillius Layered Oxide Bi7Fe2Ti2O17Cl with Efficient Photocatalytic Performance for Degradation of Tetracycline

Fang

Chen

et al. 2022

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The development of an efficient and environment-friendly photocatalyst for antibiotics degradation is of great significance and still remains a major challenge. Herein, a novel Sillén-Aurivillius layered oxide Bi7Fe2Ti2O17Cl is successfully synthesized via a one-step flux route (noted as F-BFTOC) and solid-state reaction (noted as S-BFTOC). The as-prepared F-BFTOC manifests the enhanced visible-light photocatalytic performance towards tetracycline (TC) degradation compared with Bi4NbO8Cl and its degradation efficiency reaches 90% within 90 min. Additionally, the proposed degradation pathway and photocatalytic mechanism are systematically investigated by liquid chromatography tandem-mass spectrometry (HPLC-MS), active species trapping test, electron spin resonance (ESR) and first-principles calculations. The superior degradation of antibiotics is primarily derived from the photo-generated h+, and radical ·O2− as the dominant active species. More importantly, the F-BFTOC exhibits excellent cycle stability and TC is ultimately transformed into non-toxic open-loop products. Simultaneously, Rhodamine B (RhB) as a typical organic pollutant is further employed to evaluate the photocatalytic activity of F-BFTOC, and 98% of the degradation efficiency is achieved. BFTOC as a multifunctional photocatalyst for pollutant degradation offers a new insight for Sillén-Aurivillius photocatalytic in the field of water purification.

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“…Composite metal oxides can affect the material property by adjusting the cycle of reductive and oxidative ability as well as the distribution of active components on the surface/in the body phases, so as to improve the catalytic degradation performance of catalysts. Particularly, WO 3-x with abundant oxygen vacancies, noticeable resistance to thermal shock and hydrochloric acid corrosion can be used as the active or additive component of catalyst [37][38][39][40][41]. It has both acidity and oxidizability, showing certain catalytic activity for Cl-VOCs degradation [35,37,38].…”

Section: Introductionmentioning

confidence: 99%

Preparation of tungsten–iron composite oxides and application in environmental catalysis for volatile organic compounds degradation

et al. 2021

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Emission of volatile organic compounds has important influence on complex air pollution and human health. In this paper, a series of tungsten-iron composite oxides with different proportions and preparation methods were synthesized and first used for catalytic combustion of chlorobenzene and toluene, as typical polluting gas sources. These WO 3 -based solid catalytic materials were systematically characterized by modern analytical methods, and the results showed that there was strong electron interaction between W and Fe elements in the composite oxides, and the presence of a certain amount of tungsten oxide inhibited the crystallization of iron oxide, and vice versa, which were beneficial to the uniform dispersion of tungsten-iron components into each other and the improvement of redox properties. Compared with single-component oxide, the formation of tungsten-iron composite oxide affected the micro-structure, improved the specific surface area and optimized the pore structure of materials. The performance test results showed that the tungsten-iron composite oxide (FeWO 4 -0.5Fe 2 O 3 , molar ratio of tungsten and iron was 1/2) prepared using citric acid-based sol-gel method was the optimal, and its catalytic degradation efficiency could reach 90% for chlorobenzene and 83% for toluene at 320 °C, and maintain at least 60 h without obvious deactivation, with high selectivity to the formation of HCl and CO 2 . KeywordsVolatile organic compounds • Catalytic combustion • WO 3 • FeWO 4 • Composite oxide • Synergistic catalytic effect Tungsten www.springer.com/42864

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An overview on WO3 based photocatalyst for environmental remediation

Cited by 158 publications

References 71 publications

A Review on the Properties and Applications of WO3 Nanostructure−Based Optical and Electronic Devices

A Review on the Properties and Applications of WO3 Nanostructure−Based Optical and Electronic Devices

Facile Synthesis of Sillén-Aurivillius Layered Oxide Bi7Fe2Ti2O17Cl with Efficient Photocatalytic Performance for Degradation of Tetracycline

Preparation of tungsten–iron composite oxides and application in environmental catalysis for volatile organic compounds degradation

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