WS2 quantum dots/MoS2@WO3-x core-shell hierarchical dual Z-scheme tandem heterojunctions with wide-spectrum response and enhanced photocatalytic performance

Guo, Meijun; Xing, Zipeng; Zhao, Tianyu; Li, Zhenzi; Yang, Shilin; Zhou, Wei

doi:10.1016/j.apcatb.2019.117913

Cited by 125 publications

(45 citation statements)

References 43 publications

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“…This mechanism is in accordance with other literature papers (Liu et al, 2012a;Badawi et al, 2013;Melhem et al, 2013) showing that a better charge separation in the tandem structures is the result of the fast electron-transfer process from the conduction band of TiO 2 to that of SnO 2 /ZnO. The highest photocatalytic efficiency of ZnO-TiO 2 tandem structures is related to the band energies proximity which favors the charge carrier's mobility and promotes the formation of oxidative species during the photocatalytic degradation (Riboni et al, 2013;Guo et al, 2019;Zhang et al, 2020). The influence of metal oxides ratios on the tandem structures as well as the concentration and optimization of the organic additives should be explored in future studies.…”

Section: Photocatalytic Propertiessupporting

confidence: 91%

Enhancing the Photocatalytic Activity of SnO2-TiO2 and ZnO-TiO2 Tandem Structures Toward Indoor Air Decontamination

Eneşca

2020

Front. Chem.

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ZnO-TiO2 and SnO2-TiO2 tandem structures were developed using the doctor blade technique. It was found that by employing organic hydrophilic and hydrophobic as additives into the precursor it is possible to tailor the film density and morphology with direct consequences on the photocatalytic activity of the tandem structures. The highest photocatalytic efficiency corresponds to ZnO-TiO2 and can reach 74.04% photocatalytic efficiency toward acetaldehyde when a hydrophilic additive is used and 70.93% when a hydrophobic additive is employed. The snO2-TiO2 tandem structure presents lower photocatalytic properties (61.35 % when the hydrophilic additive is used) with a constant rate reaction of 0.07771 min−1.

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Section: Photocatalytic Propertiessupporting

confidence: 91%

Enhancing the Photocatalytic Activity of SnO2-TiO2 and ZnO-TiO2 Tandem Structures Toward Indoor Air Decontamination

Eneşca

2020

Front. Chem.

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“…The nanostructured films containing WO 3− y and MoS 2 phases are currently used to create photoanodes for effective photo-electrochemical water oxidation reaction (oxygen evolution reaction, OER) [2,3,9,55,56,57]. This is due to the adequate optical properties of these semiconductor materials and their energy band structures.…”

Section: Discussionmentioning

confidence: 99%

Pulsed Laser Deposition of Nanostructured MoS3/np-Mo//WO3−y Hybrid Catalyst for Enhanced (Photo) Electrochemical Hydrogen Evolution

et al. 2019

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Pulsed laser ablation of MoS2 and WO3 targets at appropriate pressures of background gas (Ar, air) were used for the preparation of new hybrid nanostructured catalytic films for hydrogen production in an acid solution. The films consisted of a nanostructured WO3−y underlayer that was covered with composite MoS3/np-Mo nanocatalyst. The use of dry air with pressures of 40 and 80 Pa allowed the formation of porous WO3−y films with cauliflower- and web-like morphology, respectively. The ablation of the MoS2 target in Ar gas at a pressure of 16 Pa resulted in the formation of amorphous MoS3 films and spherical Mo nanoparticles. The hybrid MoS3/np-Mo//WO3−y films deposited on transparent conducting substrates possessed the enhanced (photo)electrocatalytic performance in comparison with that of any pristine one (MoS3/np-Mo or WO3−y films) with the same loading. Modeling by the kinetic Monte Carlo method indicated that the change in morphology of the deposited WO3−y films could be caused by the transition of ballistic deposition to diffusion limited aggregation of structural units (atoms/clusters) under background gas pressure growth. The factors and mechanisms contributing to the enhancement of the electrocatalytic activity of hybrid nanostructured films and facilitating the effective photo-activation of hydrogen evolution in these films are considered.

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“…13 b shows the applied bias photon-to-current conversion efficiency (ABPE) under different applied potentials, which were calculated based on LSV. The ABPE was determined using equation (12) [69] , [70] , where J is the net photocurrent density at different potentials, V is the applied potential, and P is the power density of the incident light, which is 100 mW cm −2 (AM 1.5G).

…”

Section: Resultsmentioning

confidence: 99%

Ultrasonically prepared photocatalyst of W/WO3 nanoplates with WS2 nanosheets as 2D material for improving photoelectrochemical water splitting

Tayebi

Masoumi

Lee

2021

Ultrasonics Sonochemistry

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WS2 quantum dots/MoS2@WO3-x core-shell hierarchical dual Z-scheme tandem heterojunctions with wide-spectrum response and enhanced photocatalytic performance

Cited by 125 publications

References 43 publications

Enhancing the Photocatalytic Activity of SnO2-TiO2 and ZnO-TiO2 Tandem Structures Toward Indoor Air Decontamination

Enhancing the Photocatalytic Activity of SnO2-TiO2 and ZnO-TiO2 Tandem Structures Toward Indoor Air Decontamination

Pulsed Laser Deposition of Nanostructured MoS3/np-Mo//WO3−y Hybrid Catalyst for Enhanced (Photo) Electrochemical Hydrogen Evolution

Ultrasonically prepared photocatalyst of W/WO3 nanoplates with WS2 nanosheets as 2D material for improving photoelectrochemical water splitting

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