Solar-Driven Photoelectrochemical Performance of Novel ZnO/Ag2WO4/AgBr Nanorods-Based Photoelectrodes

Abstract Highly efficient photoelectrochemical (PEC) water oxidation under solar visible light is crucial for water splitting to produce hydrogen as a source of sustainable energy. Particularly, silver-based nanomaterials are important for PEC performance due to their surface plasmon resonance which can enhance the photoelectrochemical efficiency. However, the PEC of ZnO/Ag2WO4/AgBr with enhanced visible-light water oxidation has not been studied so far. Herein, we present a novel photoelectrodes based on ZnO/Ag2WO4/AgBr nanorods (NRs) for PEC application, which is prepared by the low-temperature chemical growth method and then by successive ionic layer adsorption and reaction (SILAR) method. The synthesized photoelectrodes were investigated by several characterization techniques, emphasizing a successful synthesis of the ZnO/Ag2WO4/AgBr heterostructure NRs with excellent photocatalysis performance compared to pure ZnO NRs photoelectrode. The significantly enhanced PEC was due to improved photogeneration and transportation of electrons in the heterojunction due to the synergistic effect of the heterostructure. This study is significant for basic understanding of the photocatalytic mechanism of the heterojunction which can prompt further development of novel efficient photoelectrochemical-catalytic materials. Graphic Abstract

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A Simplified Successive Ionic Layer Adsorption and Reaction (s-SILAR) Method for Growth of Porous BiVO4Thin Films for Photoelectrochemical Water Oxidation

Journal of The Electrochemical Society ◽

10.1149/2.1321702jes ◽

2017 ◽

Vol 164 (2) ◽

pp. H119-H125 ◽

Cited By ~ 5

Author(s):

Wenlong Guo ◽

Ding Tang ◽

Oluwaniyi Mabayoje ◽

Bryan R. Wygant ◽

Peng Xiao ◽

...

Keyword(s):

Water Oxidation ◽

Silar Method ◽

Layer Adsorption ◽

Photoelectrochemical Water Oxidation ◽

Ionic Layer

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Improving photoelectrochemical performance of highly-ordered TiO2 nanotube arrays with cosensitization of PbS and CdS quantum dots

RSC Advances ◽

10.1039/c5ra22964b ◽

2016 ◽

Vol 6 (10) ◽

pp. 8118-8126 ◽

Cited By ~ 19

Author(s):

Xiaojiao Zhang ◽

Min Zeng ◽

Jiawei Zhang ◽

Aimin Song ◽

Shiwei Lin

Keyword(s):

Quantum Dots ◽

Tio2 Nanotube Arrays ◽

Tio2 Nanotube ◽

Nanotube Arrays ◽

Cds Quantum Dots ◽

Photoelectrochemical Performance ◽

Silar Method ◽

Layer Adsorption ◽

Ionic Layer

PbS and CdS quantum dots (QDs) were deposited on TiO2 nanotube arrays (TNTAs) by a sonication-assisted successive ionic layer adsorption and reaction (S-SILAR) method.

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Influence of TiO2 Support on Activity of Co3O4/TiO2 Photocatalysts for Visible-Light Water Oxidation

Bulletin of the Chemical Society of Japan ◽

10.1246/bcsj.20170373 ◽

2018 ◽

Vol 91 (3) ◽

pp. 486-491 ◽

Cited By ~ 14

Author(s):

Koki Ishimaki ◽

Tomoki Uchiyama ◽

Megumi Okazaki ◽

Daling Lu ◽

Yoshiharu Uchimoto ◽

...

Keyword(s):

Visible Light ◽

Water Oxidation ◽

Tio2 Photocatalysts ◽

Light Water ◽

Tio2 Support

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Fabrication of hydrophobic surface of titanium dioxide films by successive ionic layer adsorption and reaction (SILAR) method

Applied Surface Science ◽

10.1016/j.apsusc.2009.01.015 ◽

2009 ◽

Vol 255 (12) ◽

pp. 6067-6072 ◽

Cited By ~ 19

Author(s):

A.M. More ◽

J.L. Gunjakar ◽

C.D. Lokhande ◽

Oh Shim Joo

Keyword(s):

Titanium Dioxide ◽

Hydrophobic Surface ◽

Silar Method ◽

Titanium Dioxide Films ◽

Layer Adsorption ◽

Ionic Layer

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Preparation of Cu2ZnSnS4 Thin Films by Successive Ionic Layer Adsorption and Reaction (SILAR) Method for Supercapacitor Applications

Journal of Nanoscience and Nanotechnology ◽

10.1166/jnn.2020.17888 ◽

2020 ◽

Vol 20 (10) ◽

pp. 6235-6244 ◽

Cited By ~ 3

Author(s):

A. Murugan ◽

V. Siva ◽

A. Shameem ◽

S. Asath Bahadur

Keyword(s):

Thin Films ◽

Electrochemical Behavior ◽

Electrochemical Impedance ◽

X Ray Diffraction ◽

Silar Method ◽

Layer Adsorption ◽

Diffraction Patterns ◽

Czts Thin Films ◽

Supercapacitor Applications ◽

Ionic Layer

The Cu2ZnSnS4 (CZTS) thin films have been prepared at different deposition cycles, deposited on a glass substrate by successive ionic layer adsorption and reaction (SILAR) method followed by the annealing process at elevated temperature. The investigations on the films have been carried out to understand and confirm its structure, functional group present, crystalline morphology, optical and electrochemical behavior. The powder X-ray diffraction patterns recorded indicate that the deposited films are formed in the tetragonal structure. Other parameters like grain size, dislocation density, and microstrain are also calculated. The uniform surface of the films with spherical shaped morphology has been observed by Scanning Electron Microscopy, and the elemental compositions have been confirmed by EDAX. Electrochemical behavior such as cyclic voltammetry, electrochemical impedance spectroscopy and galvanostatic charge–discharge analysis have been carried out by electrochemical workstation. The modified electrode exhibits maximum specific capacitance value as 416 F/g for a pure sample. Optical studies have shown that the band gaps are estimated between 1.40 eV and 1.57 eV.

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