Spacing prior to decorating TiO2 nanowires by dewetted Au nanoparticles for boosting photoelectrochemical water oxidation

CrystEngComm ◽  
2021 ◽  
Author(s):  
Yun Cai ◽  
Fengyu Yuan ◽  
Fan Li ◽  
Huihui Kang ◽  
Daxiang Xue ◽  
...  
Keyword(s):  
Water Splitting ◽  
Structural Dynamics ◽  
Water Oxidation ◽  
Au Nanoparticles ◽  
Hydrogen Generation ◽  
Electronic Configuration ◽  
Tio2 Nanowires ◽  
The Right ◽  
Photoelectrochemical Water Oxidation ◽  
Pec Water Splitting

The Au/TiO2-based systems with the right combination of electronic configuration, structural dynamics, and stability have recently attracted wide attention in photoelectrochemical (PEC) water splitting for hydrogen generation. Here, we used...

Scheelite-related MIIxBi1−xV1−xMoxO4 (MII – Ca, Sr) solid solution-based photoanodes for enhanced photoelectrochemical water oxidation

2020 ◽  
Vol 49 (7) ◽  
pp. 2345-2355
Author(s):  
Shilin Li ◽  
Konstantin L. Bychkov ◽  
Denys S. Butenko ◽  
Kateryna V. Terebilenko ◽  
Yukun Zhu ◽  
...  
Keyword(s):  
Solid Solution ◽  
Water Splitting ◽  
Solid Solutions ◽  
Water Oxidation ◽  
Conductive Glass ◽  
Photoelectrochemical Water Oxidation ◽  
Pec Water Splitting

Scheelite-related MIIxBi1−xV1−xMoxO4 (MII = Ca, Sr, x = 0.1 to 0.9) solid solutions deposited on FTO-conductive glass have been shown to be promising photoanodes in photoelectrochemical (PEC) water splitting.

Tri-functional molecular relay to fabricate size-controlled CoOx nanoparticles and WO3 photoanode for an efficient photoelectrochemical water oxidation

2020 ◽  
Vol 10 (16) ◽  
pp. 5677-5687
Author(s):  
Gui-Lin Hu ◽  
Rong Hu ◽  
Zhi-Hong Liu ◽  
Kai Wang ◽  
Xiang-Yang Yan ◽  
...  
Keyword(s):  
Water Splitting ◽  
Water Oxidation ◽  
Light Harvesting ◽  
Catalytic Materials ◽  
Element Doping ◽  
Size Controlled ◽  
Photoelectrochemical Water Oxidation ◽  
Pec Water Splitting

Heterojunction and element doping to couple light-harvesting semiconductors with catalytic materials have been widely employed for photoelectrochemical (PEC) water splitting.

scholarly journals Efficient photoelectrochemical water oxidation using a TiO2 nanosphere-decorated BiVO4 heterojunction photoanode

RSC Advances ◽  
2018 ◽  
Vol 8 (72) ◽  
pp. 41439-41444 ◽  
Author(s):  
Wenchao Jiang ◽  
Yi Jiang ◽  
Jing Tong ◽  
Qian Zhang ◽  
Siyuan Li ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Water Splitting ◽  
Water Oxidation ◽  
Charge Separation ◽  
Photoelectrochemical Water Oxidation ◽  
Pec Water Splitting

Constructing heterojunctions by coupling dissimilar semiconductors is a promising approach to boost charge separation and charge transfer in photoelectrochemical (PEC) water splitting.

Electrochemical and photoelectrochemical water splitting with a CoOx catalyst prepared by flame assisted deposition

2020 ◽  
Vol 49 (3) ◽  
pp. 588-592 ◽  
Author(s):  
Fusheng Li ◽  
Ziqi Zhao ◽  
Hao Yang ◽  
Dinghua Zhou ◽  
Yilong Zhao ◽  
...  
Keyword(s):  
Cobalt Oxide ◽  
Water Splitting ◽  
Water Oxidation ◽  
Oxide Catalyst ◽  
Photoelectrochemical Water Splitting ◽  
Deposition Method ◽  
Photoelectrochemical Water Oxidation

A cobalt oxide catalyst prepared by a flame-assisted deposition method on the surface of FTO and hematite for electrochemical and photoelectrochemical water oxidation, respectively.

Tetragonal Tungsten Bronze Type Sn(II)-Based Quaternary Oxides: A New Type of Visible-Light-Absorbing Semiconductors for Photoelectrochemical Water Oxidation

2021 ◽  
Author(s):  
Yalong Zou ◽  
Jiabo Le ◽  
Yufeng Cao ◽  
Na An ◽  
Yang Zhou ◽  
...  
Keyword(s):  
Visible Light ◽  
Water Oxidation ◽  
Tungsten Bronze ◽  
Complex Oxides ◽  
Tetragonal Tungsten Bronze ◽  
Visible Light Absorption ◽  
New Type ◽  
Hydrogen Fuels ◽  
Photoelectrochemical Water Oxidation ◽  
Pec Water Splitting

The attractive photoelectrochemical (PEC) water splitting for hydrogen fuels always desires new semiconductors which provide stronger visible light absorption with suitable band positions. Sn(II) complex oxides are expected to offer...

Two photon tandem photoanode with black phosphorous quantum dot sensitized BiVO4 for solar water splitting

2022 ◽  
Author(s):  
Bingjun Jin ◽  
Yoonjun Cho ◽  
Cheolwoo Park ◽  
Jeehun Jeong ◽  
Sungsoon Kim ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Water Splitting ◽  
Water Oxidation ◽  
Oxidation Kinetics ◽  
Light Harvesting ◽  
Charge Recombination ◽  
Solar Water ◽  
Two Photon ◽  
Solar Water Splitting ◽  
Pec Water Splitting

The photoelectrochemical (PEC) water splitting efficiency is profoundly restricted by the limited light harvesting, rapid charge recombination, and sluggish water oxidation kinetics, in which the construction of a photoelectrode requires...

scholarly journals Thickness-dependent photoelectrochemical properties of a semitransparent Co3O4 photocathode

2018 ◽  
Vol 9 ◽  
pp. 2432-2442 ◽  
Author(s):  
Malkeshkumar Patel ◽  
Joondong Kim
Keyword(s):  
Water Splitting ◽  
Water Oxidation ◽  
Hydrogen Generation ◽  
Hydrogen Gas ◽  
Generation Rate ◽  
Alkaline Electrolyte ◽  
Stoichiometric Ratio ◽  
Gas Generation ◽  
Pec Cells ◽  
Gas Generation Rate

Co3O4 has been widely studied as a catalyst when coupled with a photoactive material during hydrogen production using water splitting. Here, we demonstrate a photoactive spinel Co3O4 electrode grown by the Kirkendall diffusion thermal oxidation of Co nanoparticles. The thickness-dependent structural, physical, optical, and electrical properties of Co3O4 samples are comprehensively studied. Our analysis shows that two bandgaps of 1.5 eV and 2.1 eV coexist with p-type conductivity in porous and semitransparent Co3O4 samples, which exhibit light-induced photocurrent in photoelectrochemical cells (PEC) containing the alkaline electrolyte. The thickness-dependent properties of Co3O4 related to its use as a working electrode in PEC cells are extensively studied and show potential for the application in water oxidation and reduction processes. To demonstrate the stability, an alkaline cell was composed for the water splitting system by using two Co3O4 photoelectrodes. The oxygen gas generation rate was obtained to be 7.17 mL·h−1 cm−1. Meanwhile, hydrogen gas generation rate was almost twice of 14.35 mL·h−1·cm−1 indicating the stoichiometric ratio of 1:2. We propose that a semitransparent Co3O4 photoactive electrode is a prospective candidate for use in PEC cells via heterojunctions for hydrogen generation.

scholarly journals TiO2 Nanosheet Arrays with Layered SnS2 and CoOx Nanoparticles for Efficient Photoelectrochemical Water Splitting

2019 ◽  
Vol 14 (1) ◽  
Author(s):  
Zhou Cao ◽  
Yanling Yin ◽  
Peng Fu ◽  
Dong Li ◽  
Yulan Zhou ◽  
...  
Keyword(s):  
Water Splitting ◽  
Water Oxidation ◽  
Environmental Issues ◽  
Charge Carriers ◽  
Oxidation Catalyst ◽  
Hydrogen Fuel ◽  
Nanosheet Array ◽  
Nanosheet Arrays ◽  
Global Energy Supply ◽  
Pec Water Splitting

Abstract Converting solar energy into sustainable hydrogen fuel by photoelectrochemical (PEC) water splitting is a promising technology to solve increasingly serious global energy supply and environmental issues. However, the PEC performance based on TiO2 nanomaterials is hindered by the limited sunlight-harvesting ability and its high recombination rate of photogenerated charge carriers. In this work, layered SnS2 absorbers and CoOx nanoparticles decorated two-dimensional (2D) TiO2 nanosheet array photoelectrode have been rationally designed and successfully synthesized, which remarkably enhanced the PEC performance for water splitting. As the result, photoconversion efficiency of TiO2/SnS2/CoOx and TiO2/SnS2 hybrid photoanodes increases by 3.6 and 2.0 times under simulated sunlight illumination, compared with the bare TiO2 nanosheet arrays photoanode. Furthermore, the TiO2/SnS2/CoOx photoanode also presented higher PEC stability owing to CoOx catalyst served as efficient water oxidation catalyst as well as an effective protectant for preventing absorber photocorrosion.

Band gap tuning to improve the photoanodic activity of ZnInxSy for photoelectrochemical water oxidation

2019 ◽  
Vol 9 (23) ◽  
pp. 6769-6781 ◽  
Author(s):  
Mamta Devi Sharma ◽  
Chavi Mahala ◽  
Mrinmoyee Basu
Keyword(s):  
Band Gap ◽  
Water Splitting ◽  
Water Oxidation ◽  
Photoelectrochemical Water Splitting ◽  
Elemental Doping ◽  
Band Gap Tuning ◽  
Photoelectrochemical Water Oxidation

Elemental doping and band gap tuning of ZnInxSy result in enhanced photoelectrochemical water splitting activity.

scholarly journals Hybrid TaON/LaTiO2N photoelectrode for water oxidation

2019 ◽  
Vol 1 (3) ◽  
pp. 212-219 ◽  
Author(s):  
Pengda An ◽  
Baopeng Yang ◽  
Ning Zhang ◽  
Hongmei Li ◽  
Min Liu
Keyword(s):  
Water Splitting ◽  
Water Oxidation ◽  
Counter Electrode ◽  
Applied Bias ◽  
Microwave Assisted ◽  
Particle Transfer ◽  
Microwave Assisted Method ◽  
Pec Water Splitting

Abstract Efficient and stable photoelectrodes for water oxidation are highly desirable in the field of photoelectrochemical (PEC) water splitting. However, photoelectrodes with low externally applied bias usually exhibit weak photocurrent and vice versa. Herein, novel and efficient CoOx-TaON/LTON composite photoanodes have been successfully prepared by a microwave assisted method followed with a particle transfer procedure. The obtained photoanode generated an anodic photocurrent of ~7.2 mA cm−2 at 1.2 VRHE and initiated the anodic photourrent at ~0.5 VRHE. The HC-STH of the composite photoelectrode reached 1.0% at 1.2 VRHE. Further, stoichiometric oxygen and hydrogen are stably produced on the photoanode and the counter electrode with a Faraday efficiency of unity for 2 h.

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