Effect of Ti3+ Ions and Conduction Band Electrons on Photocatalytic and Photoelectrochemical Activity of Rutile Titania for Water Oxidation

2016 ◽  
Vol 120 (12) ◽  
pp. 6467-6474 ◽  
Author(s):  
Fumiaki Amano ◽  
Masashi Nakata ◽  
Akira Yamamoto ◽  
Tsunehiro Tanaka
Keyword(s):  
Conduction Band ◽  
Water Oxidation ◽  
Photoelectrochemical Activity ◽  
Rutile Titania

Ultrasonic-assisted preparation of a pinhole-free BiVO4 photoanode for enhanced photoelectrochemical water oxidation

2018 ◽  
Vol 54 (44) ◽  
pp. 5570-5573 ◽  
Author(s):  
Gisang Park ◽  
Joon Yong Park ◽  
Jong Hyeok Seo ◽  
Kyung Hee Oh ◽  
Ahyeon Ma ◽  
...  
Keyword(s):  
Water Oxidation ◽  
Photoelectrochemical Activity ◽  
Sulfite Oxidation ◽  
Ultrasonic Assisted ◽  
Photoelectrochemical Water Oxidation

A pinhole-free BiVO4 electrode showed highly improved photoelectrochemical activity for both sulfite oxidation and water oxidation.

Improved Photoelectrochemical Activity of CaFe2O4/BiVO4Heterojunction Photoanode by Reduced Surface Recombination in Solar Water Oxidation

2014 ◽  
Vol 6 (20) ◽  
pp. 17762-17769 ◽  
Author(s):  
Eun Sun Kim ◽  
Hyun Joon Kang ◽  
Ganesan Magesh ◽  
Jae Young Kim ◽  
Ji-Wook Jang ◽  
...  
Keyword(s):  
Water Oxidation ◽  
Surface Recombination ◽  
Photoelectrochemical Activity ◽  
Solar Water ◽  
Solar Water Oxidation ◽  
Reduced Surface

scholarly journals Photoelectrochemical Response of WO3/Nanoporous Carbon Anodes for Photocatalytic Water Oxidation

2018 ◽  
Vol 4 (3) ◽  
pp. 45 ◽  
Author(s):  
Alicia Gomis-Berenguer ◽  
Jesús Iniesta ◽  
David Fermín ◽  
Conchi Ania
Keyword(s):  
Water Oxidation ◽  
Carrier Transport ◽  
Hexagonal Phase ◽  
Nanoporous Carbon ◽  
Photoelectrochemical Performance ◽  
Nanoporous Carbons ◽  
Photoelectrochemical Activity ◽  
Photoelectrochemical Response ◽  
Carbon Anodes ◽  
The Impact

This work demonstrates the ability of nanoporous carbons to boost the photoelectrochemical activity of hexagonal and monoclinic WO3 towards water oxidation under irradiation. The impact of the carbonaceous phase was strongly dependent on the crystalline structure and morphology of the semiconductor, substantially increasing the activity of WO3 rods with hexagonal phase. The incorporation of increasing amounts of a nanoporous carbon of low functionalization to the WO3 electrodes improved the quantum yield of the reaction and also affected the dynamics of the charge transport, creating a percolation path for the majority carriers. The nanoporous carbon promotes the delocalization of the charge carriers through the graphitic layers. We discuss the incorporation of nanoporous carbons as an interesting strategy for improving the photoelectrochemical performance of nanostructured semiconductor photoelectrodes featuring hindered carrier transport.

scholarly journals Influence of C3N4 Precursors on Photoelectrochemical Behavior of TiO2/C3N4 Photoanode for Solar Water Oxidation

Energies ◽  
2020 ◽  
Vol 13 (4) ◽  
pp. 974 ◽  
Author(s):  
Swetha S. M. Bhat ◽  
Sang Eon Jun ◽  
Sol A Lee ◽  
Tae Hyung Lee ◽  
Ho Won Jang
Keyword(s):  
Water Oxidation ◽  
Photocurrent Density ◽  
Continuous Illumination ◽  
Photoelectrochemical Performance ◽  
Photoelectrochemical Activity ◽  
Energy Demands ◽  
Photoelectrochemical Response ◽  
Solar Water Oxidation ◽  
Redox Ability ◽  
2D Nanosheets

Photoelectrochemical water splitting is considered as a long-term solution for the ever-increasing energy demands. Various strategies have been employed to improve the traditional TiO2 photoanode. In this study, TiO2 nanorods were decorated by graphitic carbon nitride (C3N4) derived from different precursors such as thiourea, melamine, and a mixture of thiourea and melamine. Photoelectrochemical activity of TiO2/C3N4 photoanode can be modified by tuning the number of precursors used to synthesize C3N4. C3N4 derived from the mixture of melamine and thiourea in TiO2/C3N4 photoanode showed photocurrent density as high as 2.74 mA/cm2 at 1.23 V vs. RHE. C3N4 synthesized by thiourea showed particle-like morphology, while melamine and melamine with thiourea derived C3N4 yielded two dimensional (2D) nanosheets. Nanosheet-like C3N4 showed higher photoelectrochemical performance than that of particle-like nanostructures as specific surface area, and the redox ability of nanosheets are believed to be superior to particle-like nanostructures. TiO2/C3N4 displayed excellent photostability up to 20 h under continuous illumination. Thiourea plays an important role in enhancing the photoelectrochemical performance of TiO2/C3N4. This study emphasizes the fact that the improved photoelectrochemical performance can be achieved by varying the precursors of C3N4 in TiO2/C3N4 heterojunction. This is the first report to show the influence of C3N4 precursors on photoelectrochemical performance in TiO2/C3N4 systems. This would pave the way to explore different precursors influence on C3N4 with respect to the photoelectrochemical response of TiO2/C3N4 heterojunction photoanode.

Photoelectrochemical Activity of Layered Metal Phosphorous Trichalcogenides for Water Oxidation

2021 ◽  
pp. 2100294
Author(s):  
Filipa M. Oliveira ◽  
Jan Paštika ◽  
Laura S. Pires ◽  
Zdeněk Sofer ◽  
Rui Gusmão
Keyword(s):  
Water Oxidation ◽  
Photoelectrochemical Activity
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