Synthesis of LAS/ZnO/ZnWO4 3D rod-like heterojunctions with efficient photocatalytic performance: Synergistic effects of highly active site exposure and low carrier recombination

Wu, Yadong; Tie, Junyu; Chen, Cheng; Luo, Ni; Yang, Dingming; Hu, Wenyuan; Liu, Xun

doi:10.1016/j.ceramint.2019.04.027

Cited by 12 publications

(6 citation statements)

References 32 publications

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“…Wu et al [35] showed that the hydrothermal synthesis in autoclave for the time of 20 h at 180 °C generates semi-spherical nanoparticles, with an average diameter of 30 nm. Thus, it can be attributed that low temperatures in parallel with short synthesis times tend to form agglomeration-prone nanoparticles [36].…”

Section: Resultsmentioning

confidence: 99%

Influence of microwave-assisted hydrothermal treatment time on the crystallinity, morphology and optical properties of ZnWO4 nanoparticles: Photocatalytic activity

Neto

Nunes

Li³

et al. 2020

Ceramics International

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Section: Resultsmentioning

confidence: 99%

Influence of microwave-assisted hydrothermal treatment time on the crystallinity, morphology and optical properties of ZnWO4 nanoparticles: Photocatalytic activity

Neto

Nunes

Li³

et al. 2020

Ceramics International

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“… 17 Composite photocatalysts about ZnWO 4 by means of constructing heterostructures have been reported, for instance, CdS/Zn 1– x Cd x WO 4 , 18 BiOI/ZnWO 4 , 19 LAS/ZnO/ZnWO 4 . 20 Benefiting from heterostructure effects, admirable visible-light photocatalytic property of these composited materials can be achieved. Compared with changing the photocatalytic property of ZnWO 4 via adjusting its morphology, the photocatalytic activity of the ZnWO 4 -based heterostructure has been obviously improved.…”

Section: Introductionmentioning

confidence: 99%

“…The way of controlling the morphology were rarely used in the industrial production, until now, which is probably because a good deal of photo-generated carriers are excited, which irregularly generate taunt the recombination of carriers and further impose restrictions on photocatalytic performance . Composite photocatalysts about ZnWO 4 by means of constructing heterostructures have been reported, for instance, CdS/Zn 1– x Cd x WO 4 , BiOI/ZnWO 4 , LAS/ZnO/ZnWO 4 . Benefiting from heterostructure effects, admirable visible-light photocatalytic property of these composited materials can be achieved.…”

Section: Introductionmentioning

confidence: 99%

Rodlike Cadmium-Incorporated Zinc Tungstate Nanoarchitecture Fabricated by a Facile and Template-Free Strategy as a Photocatalyst for the Effective Degradation of Organic Pollutants in Sewage

Luo

Xie

2020

ACS Omega

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Fabricating nanostructures and doping engineering are beneficial to tailor the photocatalytic activity of semiconductor materials, and the semiconducting photocatalysis is deemed to be one of the potential protocols to handle the environmental pollution and energy crisis issues. Herein, rodlike Cd-doped ZnWO 4 Zn 1– x Cd x WO 4 nanoarchitectures were triumphantly prepared by a template-free strategy. The crystal structure, chemical state, optical, and photocatalytic features of the Zn 1– x Cd x WO 4 nanoarchitectures were studied using a variety of characterizations. The Zn 1– x Cd x WO 4 nanoarchitectures exhibit glorious photocatalytic performance compared with pristine ZnWO 4 for the degradation of methyl orange in sewage. Mechanistic studies were executed for getting insights into the photocatalytic degradation process, and the remarkable photocatalytic property of the doped ZnWO 4 nanoarchitectures is attributed to the boosted optical absorptive efficiency and the valid segregation and transmission of photogenerated charge carriers deriving from doping effects. The doped nanoarchitectures of this work have promising applications in the territories such as environment and energy chemistry, and the insight proposed in this work will contribute to develop other functionalized nanoarchitectures.

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“…A typical saturation magnetization (M-H curve) with high coercivity of αF was identified and saturated under a magnetic field of 20 KOe. It was found that the ferromagnetic αF had lower residual magnetization [35] , [36] , [37] . In addition, the ferromagnetic M-H curves of FZHx were not identified in the picture, suggesting that the samples of ZFx were non-ferromagnetic semiconductor materials.…”

Section: Resultsmentioning

confidence: 99%

Magnetic field assisted α-Fe2O3/Zn1−xFexO heterojunctions for accelerating antiviral agents degradation under visible-light

Ren

et al. 2022

Journal of Environmental Chemical Engineering

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Reducing the recombination efficiency of photo-induced carriers has been found as an effective means to improve the degradation of antiviral agents. Given that the Lorentz forces can cause the abnormal charge to move in the opposite direction, external magnetic field improved α-Fe 2 O 3 /Zn 1-x Fe x O heterojunctions (FZHx) were developed to remove increasing antiviral agents that were attributed to the COVID-19 pandemic under visible light. The characterization of the mentioned FZHx in the external magnetic field indicated that FZHx had perfect photocatalytic activity for degrading antiviral agents. In the external magnetic field, the quantities of photo-generated carriers and free radicals (•OH and •O 2 - ) derived from FZHx increased significantly, which improved antiviral agent removal by 30.0%. Though the band structure (α-Fe 2 O 3 ) is unlikely to change due to some orders of magnitude weaker of Zeeman energy in magnetic fields, which insignificantly impacts photocatalytic performance. However, this study proposed a strategy of negative magnetoresistance effects and heterojunctions to facilitate the separation and transfer of photo-induced carriers in magnetic fields. Based on the proposed strategy, spin oriented electrons were selected and accumulated on the conduction band, which contributed to the degradation of antiviral agents. Overall, this study presented novel insights into the improved degradation performance of antiviral agents by applying Fe-based heterojunctions in an external magnetic field.

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Synthesis of LAS/ZnO/ZnWO4 3D rod-like heterojunctions with efficient photocatalytic performance: Synergistic effects of highly active site exposure and low carrier recombination

Cited by 12 publications

References 32 publications

Influence of microwave-assisted hydrothermal treatment time on the crystallinity, morphology and optical properties of ZnWO4 nanoparticles: Photocatalytic activity

Influence of microwave-assisted hydrothermal treatment time on the crystallinity, morphology and optical properties of ZnWO4 nanoparticles: Photocatalytic activity

Rodlike Cadmium-Incorporated Zinc Tungstate Nanoarchitecture Fabricated by a Facile and Template-Free Strategy as a Photocatalyst for the Effective Degradation of Organic Pollutants in Sewage

Magnetic field assisted α-Fe2O3/Zn1−xFexO heterojunctions for accelerating antiviral agents degradation under visible-light

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