Effect of Mn2+ incorporation on the photoelectrochemical properties of BiVO4

2022 ◽  
Author(s):  
Preeti Dagar ◽  
Sandeep Kumar ◽  
Ashok Ganguli
Keyword(s):  
Band Gap ◽  
Water Splitting ◽  
High Stability ◽  
Narrow Band ◽  
Photoelectrochemical Water Splitting ◽  
Band Edge ◽  
Photoelectrochemical Properties

BiVO4 is a promising photoanode material for photoelectrochemical water splitting applications due to its narrow band gap i.e., ̴ 2.4 eV, suitable band-edge positions, non-toxicity and high stability. Here, we...

Anatase Mg0.05Ta0.95O1.15N0.85: a novel photocatalyst for solar hydrogen production

RSC Advances ◽  
2016 ◽  
Vol 6 (89) ◽  
pp. 86240-86244 ◽  
Author(s):  
Honglin Gao ◽  
Meiming Zhao ◽  
Shicheng Yan ◽  
Peng Zhou ◽  
Zeyan Li ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Visible Light ◽  
Band Gap ◽  
Water Splitting ◽  
Narrow Band ◽  
Light Response ◽  
Photoelectrochemical Water Splitting ◽  
Solar Hydrogen ◽  
Visible Light Response ◽  
Solar Hydrogen Production

Anatase Mg0.05Ta0.95O1.15N0.85, exhibiting a narrow band gap for solar hydrogen, is a promising visible-light-response photocatalyst for photocatalytic or photoelectrochemical water splitting.

InGaAsP as a Promising Narrow Band Gap Semiconductor for Photoelectrochemical Water Splitting

2019 ◽  
Vol 11 (28) ◽  
pp. 25236-25242 ◽  
Author(s):  
Joshua D. Butson ◽  
Parvathala Reddy Narangari ◽  
Mykhaylo Lysevych ◽  
Jennifer Wong-Leung ◽  
Yimao Wan ◽  
...  
Keyword(s):  
Band Gap ◽  
Water Splitting ◽  
Narrow Band ◽  
Photoelectrochemical Water Splitting

One-Dimensional TiO2@GaON Core-Shell Nanowires with Controlled Shell Thickness from Atomic Layer Deposition for Stable and Efficient Photoelectrochemical Water Splitting

2019 ◽  
Author(s):  
Jiajia Tao ◽  
Hong-Ping Ma ◽  
Kaiping Yuan ◽  
Yang Gu ◽  
Jianwei Lian ◽  
...  
Keyword(s):  
Atomic Layer Deposition ◽  
Band Gap ◽  
Water Splitting ◽  
Atomic Layer ◽  
Photoelectrochemical Water Splitting ◽  
Core Shell ◽  
Photoelectrochemical Performance ◽  
Highly Efficient ◽  
Layer Deposition ◽  
Shell Nanowires

<div>As a promising oxygen evolution reaction semiconductor, TiO2 has been extensively investigated for solar photoelectrochemical water splitting. Here, a highly efficient and stable strategy for rationally preparing GaON cocatalysts on TiO2 by atomic layer deposition is demonstrated, which we show significantly enhances the</div><div>photoelectrochemical performance compared to TiO2-based photoanodes. For TiO2@20 nm-GaON core-shell nanowires a photocurrent density up to 1.10 mA cm-2 (1.23 V vs RHE) under AM 1.5 G irradiation (100 mW cm-2) has been achieved, which is 14 times higher than that of TiO2 NWs. Furthermore, the oxygen vacancy formation on GaON as well as the band gap matching with TiO2 not only provides more active sites for water oxidation but also enhances light absorption to promote interfacial charge separation and migration. Density functional theory studies of model systems of GaON-modified TiO2 confirm the band gap reduction, high reducibility and ability to activate water. The highly efficient and stable systems of TiO2@GaON core-shell nanowires provide a deeper understanding and universal strategy for enhancing photoelectrochemical performance of photoanodes now available. </div>

Niobium incorporated WO3 nanotriangles: Band edge insights and improved photoelectrochemical water splitting activity

2019 ◽  
Vol 45 (7) ◽  
pp. 8157-8165 ◽  
Author(s):  
Shankara S. Kalanur ◽  
Il-Han Yoo ◽  
In Sun Cho ◽  
Hyungtak Seo
Keyword(s):  
Water Splitting ◽  
Photoelectrochemical Water Splitting ◽  
Band Edge

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.

Enhanced Photoelectrochemical Water Splitting Behaviour of Tuned Band Gap CdSe QDs Sensitized LaB6

2017 ◽  
Vol 17 (1) ◽  
pp. 437-442 ◽  
Author(s):  
M. Soban Babu ◽  
A Sivanantham ◽  
B. Barath Chakravarthi ◽  
R. Sujith kannan ◽  
Subhendu K Panda ◽  
...  
Keyword(s):  
Band Gap ◽  
Water Splitting ◽  
Photoelectrochemical Water Splitting ◽  
Cdse Qds

scholarly journals First Principle Calculation of Electronic, Optical Properties and Photocatalytic Potential of CuO Surfaces

2016 ◽  
Vol 1 ◽  
Author(s):  
Faozan Ahmad
Keyword(s):  
Optical Properties ◽  
Electronic Structure ◽  
Band Gap ◽  
Water Splitting ◽  
Co2 Reduction ◽  
Band Edge ◽  
Semiconductor Surface ◽  
First Principle Calculation ◽  
Stable Surface ◽  
Input Parameters

<p class="TTPKeywords">We have performed DFT calculations of electronic structure, optical properties and photocatalytic potential of the low-index surfaces of CuO. Photocatalytic reaction on the surface of semiconductor requires the appropriate band edge of the semiconductor surface to drive redox reactions. The calculation begins with the electronic structure of bulk system; it aims to determine realistic input parameters and band gap prediction. CuO is an antiferromagnetic material with strong electronic correlations, so that we have applied DFT + U calculation with spin polarized approach, beside it, we also have used GW approximation to get band gap correction. Based on the input parameters obtained, then we calculate surface energy, work function and band edge of the surfaces based on a framework developed by Bendavid et al (J. Phys. Chem. B, 117, 15750-15760) and then they are aligned with redox potential needed for water splitting and CO<sub>2</sub> reduction. Based on the calculations result can be concluded that not all of low-index CuO have appropriate band edge to push reaction of water splitting and CO2 reduction, only the surface CuO(111) and CuO(011) which meets the required band edge. Fortunately, based on the formation energy, CuO(111) and CuO(011) is the most stable surface. The last we calculate electronic structure and optical properties (dielectric function) of low-index surface of CuO, in order to determine the surface state of the most stable surface of CuO.</p>

Nanoporous Ta3N5via electrochemical anodization followed by nitridation for solar water oxidation

2020 ◽  
Vol 49 (42) ◽  
pp. 15023-15033
Author(s):  
Pran Krisna Das ◽  
Maheswari Arunachalam ◽  
Kanase Rohini Subhash ◽  
Young Jun Seo ◽  
Kwang-Soon Ahn ◽  
...  
Keyword(s):  
Visible Light ◽  
Band Gap ◽  
Water Splitting ◽  
Water Oxidation ◽  
Narrow Band ◽  
Tantalum Nitride ◽  
Electrochemical Anodization ◽  
Visible Light Driven ◽  
Solar Water Oxidation ◽  
Pec Water Splitting

Nanoporous tantalum nitride (Ta3N5) is a promising visible-light-driven photoanode for photoelectrochemical (PEC) water splitting with a narrow band gap of approximately 2.0 eV.

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