Boosting the efficiency of water oxidation via surface states on hematite photoanodes by incorporating Bi3+ ions

2020 ◽  
Vol 4 (8) ◽  
pp. 4207-4218
Author(s):  
Abdul Zeeshan Khan ◽  
Tarek A. Kandiel ◽  
Safwat Abdel-Azeim ◽  
Khalid Alhooshani
Keyword(s):  
Crystal Structure ◽  
Water Oxidation ◽  
Oxidation Kinetics ◽  
Oxygen Vacancies ◽  
Surface States ◽  
The Creation ◽  
Photoelectrochemical Water Oxidation

The incorporation of Bi3+ ions into the hematite crystal structure induces the creation of oxygen vacancies and boosts the photoelectrochemical water oxidation kinetics.

Insights into the multiple effects of oxygen vacancies on CuWO4 for photoelectrochemical water oxidation

2020 ◽  
Vol 10 (21) ◽  
pp. 7344-7351
Author(s):  
Wenlong Guo ◽  
Ya Wang ◽  
Xin Lian ◽  
Yao Nie ◽  
Shijia Tian ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Water Oxidation ◽  
Oxidation Kinetics ◽  
Oxygen Vacancies ◽  
Charge Recombination ◽  
Transfer Time ◽  
Photoelectrochemical Water Oxidation

For CuWO4, oxygen vacancies can shorten the electron transfer time and boost the water oxidation kinetics, but they aggravate the charge recombination on the surface.

Ultrathin CoOx nanolayers derived from polyoxometalate for enhanced photoelectrochemical performance of hematite photoanodes

2019 ◽  
Vol 7 (11) ◽  
pp. 6294-6303 ◽  
Author(s):  
Xiaohu Cao ◽  
Yifan Wang ◽  
Junqi Lin ◽  
Yong Ding
Keyword(s):  
Water Oxidation ◽  
Oxidation Kinetics ◽  
Surface States ◽  
Photoelectrochemical Performance

A CoOx nanolayer derived from Co8POM by photodeposition effectively passivates the surface states of hematite, thereby improving the water oxidation kinetics.

Room temperature plasma enriching oxygen vacancies of WO3 nanoflakes for photoelectrochemical water oxidation

2020 ◽  
Vol 816 ◽  
pp. 152610 ◽  
Author(s):  
Qiling Li ◽  
Shuo Li ◽  
Omar Ajouyed ◽  
Chen Chen ◽  
Yangyang Zhou ◽  
...  
Keyword(s):  
Water Oxidation ◽  
Room Temperature ◽  
Oxygen Vacancies ◽  
Temperature Plasma ◽  
Photoelectrochemical Water Oxidation

Passivation of surface states by ALD-grown TiO2 overlayers on Ta3N5 anodes for photoelectrochemical water oxidation

2016 ◽  
Vol 52 (57) ◽  
pp. 8806-8809 ◽  
Author(s):  
Peng Zhang ◽  
Tuo Wang ◽  
Jinlong Gong
Keyword(s):  
Thin Film ◽  
Atomic Layer Deposition ◽  
Water Oxidation ◽  
Surface States ◽  
Atomic Layer ◽  
Layer Deposition ◽  
Photoelectrochemical Water Oxidation

This paper describes the fabrication of TiO2 overlayers by atomic layer deposition to passivate the surface states on Ta3N5 thin film anodes for photoelectrochemical water oxidation.

Metalloporphyrin immobilized CeO2: in situ generation of active sites and synergistic promotion of photocatalytic water oxidation

2021 ◽  
Author(s):  
Jiao Meng ◽  
Yue Zhao ◽  
Haining Li ◽  
Ruiping Chen ◽  
Xun Sun ◽  
...  
Keyword(s):  
Water Oxidation ◽  
Active Sites ◽  
Oxygen Vacancies ◽  
Electron Coupling ◽  
Catalytically Active ◽  
In Situ Generation ◽  
The Creation

CoTCPP transfer photoexcited electrons to CeO2 by d–f electron coupling. The in situ generation of catalytically active sites: reduction on CeO2 accompanied with the creation of oxygen vacancies and oxidation on CoTCPP that transforms into CoOOH.

Modulating oxygen vacancies in Sn-doped hematite film grown on silicon microwires for photoelectrochemical water oxidation

2018 ◽  
Vol 6 (32) ◽  
pp. 15593-15602 ◽  
Author(s):  
Zhongyuan Zhou ◽  
Shaolong Wu ◽  
Linling Qin ◽  
Liang Li ◽  
Liujing Li ◽  
...  
Keyword(s):  
Absorption Spectrum ◽  
Water Splitting ◽  
Water Oxidation ◽  
Oxygen Vacancies ◽  
Solar Water ◽  
Solar Water Splitting ◽  
Silicon Microwires ◽  
Photoelectrochemical Water Oxidation

Dual-absorber photoelectrodes are attractive candidates for solar water splitting due to their broadened absorption spectrum and improved photovoltage compared to single-absorber systems.

Improved photoelectrochemical water oxidation kinetics using a TiO2 nanorod array photoanode decorated with graphene oxide in a neutral pH solution

2015 ◽  
Vol 17 (12) ◽  
pp. 7714-7719 ◽  
Author(s):  
Sang Youn Chae ◽  
Pitchaimuthu Sudhagar ◽  
Akira Fujishima ◽  
Yun Jeong Hwang ◽  
Oh-Shim Joo
Keyword(s):  
Graphene Oxide ◽  
Water Splitting ◽  
Water Oxidation ◽  
Oxidation Kinetics ◽  
Oxide Coating ◽  
Nanorod Array ◽  
Tio2 Nanorod ◽  
Neutral Ph ◽  
Tio2 Nanorod Array ◽  
Photoelectrochemical Water Oxidation

Opposite contributions of graphene oxide are obtained in TiO2 nanorod array photoanodes, in electrolytes of varying pH, for the water splitting application. The photocurrent of TiO2 photoanode is improved, after graphene oxide coating, in a neutral pH electrolyte, while it decreases in a basic electrolyte.

Boosting Photoelectrochemical Water Oxidation of Hematite by Surface States Modification

2019 ◽  
Author(s):  
Peng-Yi Tang ◽  
Li-Juan Han ◽  
Franziska Simone Hegner ◽  
Paul Paciok ◽  
Martí Biset-Peiró ◽  
...  
Keyword(s):  
Water Oxidation ◽  
Surface States ◽  
Photoelectrochemical Water Oxidation

scholarly journals Cobalt doped BiVO4 with rich oxygen vacancies for efficient photoelectrochemical water oxidation

RSC Advances ◽  
2020 ◽  
Vol 10 (48) ◽  
pp. 28523-28526 ◽  
Author(s):  
Guoquan Liu ◽  
Fei Li ◽  
Yong Zhu ◽  
Jiayuan Li ◽  
Licheng Sun
Keyword(s):  
Thin Films ◽  
Water Oxidation ◽  
Oxygen Vacancies ◽  
Electrodeposition Method ◽  
Photoelectrochemical Water Oxidation

A facile electrodeposition method was developed to prepare Co-BiVO4 thin films with rich oxygen vacancies.

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