scholarly journals Dye–catalyst dyads for photoelectrochemical water oxidation based on metal-free sensitizers

RSC Advances ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 5311-5319
Author(s):  
Cristina Decavoli ◽  
Chiara L. Boldrini ◽  
Vanira Trifiletti ◽  
Sally Luong ◽  
Oliver Fenwick ◽  
...  
Keyword(s):  
Water Splitting ◽  
Water Oxidation ◽  
Photoelectrochemical Water Splitting ◽  
Faradaic Efficiency ◽  
Metal Free ◽  
Dye Sensitized ◽  
Photoelectrochemical Water Oxidation

Dye–catalyst dyads based on metal-free dyes were prepared for dye-sensitized photoanodes in photoelectrochemical water splitting, showing a top ranked faradaic efficiency for O2 generation up to 95%.

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.

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.

A graphene oxide–molecular Cu porphyrin-integrated BiVO4 photoanode for improved photoelectrochemical water oxidation performance

2020 ◽  
Vol 8 (7) ◽  
pp. 4062-4072 ◽  
Author(s):  
Chunjiang Xu ◽  
Wanjun Sun ◽  
Yinjuan Dong ◽  
Congzhao Dong ◽  
Qiyu Hu ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Water Splitting ◽  
Water Oxidation ◽  
Bismuth Vanadate ◽  
Photoelectrochemical Water Splitting ◽  
Oxidation Performance ◽  
Photoelectrochemical Water Oxidation

Monoclinic bismuth vanadate (BiVO4), as a rising star in light-catching materials, has been researched in many fields, such as photoelectrochemical water splitting.

scholarly journals Hierarchical nanowire arrays based on carbon nanotubes and Co3O4 decorated ZnO for enhanced photoelectrochemical water oxidation

2015 ◽  
Vol 3 (26) ◽  
pp. 13731-13737 ◽  
Author(s):  
Mu Li ◽  
Kun Chang ◽  
Tao Wang ◽  
Lequan Liu ◽  
Huabin Zhang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Water Splitting ◽  
Water Oxidation ◽  
Nanowire Arrays ◽  
Photoelectrochemical Water Splitting ◽  
Zno Nanowire ◽  
Stepwise Synthesis ◽  
Synthesis Strategy ◽  
Photoelectrochemical Water Oxidation

A highly enhanced activity for photoelectrochemical water splitting was achieved by fabricating carbon nanotube (CNT) and Co3O4 decorated hierarchical ZnO nanowire (NW) arrays via a facile stepwise synthesis strategy.

Effect of preparation conditions and Co-Pi groups as noble metal-free redox mediator and hole extractor to boost photoelectrochemical water oxidation for 1D nanorod α-Fe2O3

2021 ◽  
Author(s):  
Ai Qin ◽  
Wanqing Fang ◽  
Yimin Lin ◽  
Rongzi Xv ◽  
Li Fu
Keyword(s):  
Hydrogen Production ◽  
Water Splitting ◽  
Water Oxidation ◽  
Hydrothermal Process ◽  
Energy Utilization ◽  
Hydrothermal Time ◽  
Metal Free ◽  
Preparation Conditions ◽  
Solar Energy Utilization ◽  
Photoelectrochemical Water Oxidation

Photoelectrochemical water splitting for hydrogen production is an ideal way for solar energy utilization. Herein, α-Fe2O3 was prepared by hydrothermal process and the precursor concentration, calcination temperature and hydrothermal time...

scholarly journals Dye-sensitized photoelectrochemical water oxidation through a buried junction

2018 ◽  
Vol 115 (27) ◽  
pp. 6946-6951 ◽  
Author(s):  
Pengtao Xu ◽  
Tian Huang ◽  
Jianbin Huang ◽  
Yun Yan ◽  
Thomas E. Mallouk
Keyword(s):  
Solar Cell ◽  
Water Splitting ◽  
Water Oxidation ◽  
Molecular Water ◽  
Phosphate Solution ◽  
Oxidation Catalysts ◽  
Faradaic Efficiency ◽  
Dye Sensitized ◽  
Electrode Potentials ◽  
Oxide Electrodes

Water oxidation has long been a challenge in artificial photosynthetic devices that convert solar energy into fuels. Water-splitting dye-sensitized photoelectrochemical cells (WS-DSPECs) provide a modular approach for integrating light-harvesting molecules with water-oxidation catalysts on metal-oxide electrodes. Despite recent progress in improving the efficiency of these devices by introducing good molecular water-oxidation catalysts, WS-DSPECs have poor stability, owing to the oxidation of molecular components at very positive electrode potentials. Here we demonstrate that a solid-state dye-sensitized solar cell (ss-DSSC) can be used as a buried junction for stable photoelectrochemical water splitting. A thin protecting layer of TiO2 grown by atomic layer deposition (ALD) stabilizes the operation of the photoanode in aqueous solution, although as a solar cell there is a performance loss due to increased series resistance after the coating. With an electrodeposited iridium oxide layer, a photocurrent density of 1.43 mA cm−2 was observed in 0.1 M pH 6.7 phosphate solution at 1.23 V versus reversible hydrogen electrode, with good stability over 1 h. We measured an incident photon-to-current efficiency of 22% at 540 nm and a Faradaic efficiency of 43% for oxygen evolution. While the potential profile of the catalyst layer suggested otherwise, we confirmed the formation of a buried junction in the as-prepared photoelectrode. The buried junction design of ss-DSSs adds to our understanding of semiconductor–electrocatalyst junction behaviors in the presence of a poor semiconducting material.

scholarly journals Efficient charge separation and transfer of a TaON/BiVO4 heterojunction for photoelectrochemical water splitting

RSC Advances ◽  
2021 ◽  
Vol 11 (22) ◽  
pp. 13269-13273
Author(s):  
Na Li ◽  
Yi Jiang ◽  
Xiaodi Wang ◽  
Chongyang Hu ◽  
Wenchao Jiang ◽  
...  
Keyword(s):  
Water Splitting ◽  
Water Oxidation ◽  
Charge Separation ◽  
Photoelectrochemical Water Splitting ◽  
Significant Enhancement ◽  
Efficient Charge ◽  
Photoelectrochemical Water Oxidation

TaON/BiVO4 heterojunction electrodes exhibited significant enhancement in the photoelectrochemical water oxidation.

Spontaneous phase transition of hexagonal wurtzite CoO: application to electrochemical and photoelectrochemical water splitting

2017 ◽  
Vol 53 (29) ◽  
pp. 4120-4123 ◽  
Author(s):  
Kyu Yeon Jang ◽  
Gisang Park ◽  
Kyung Hee Oh ◽  
Jong Hyeok Seo ◽  
Ki Min Nam
Keyword(s):  
Phase Transition ◽  
Water Splitting ◽  
Water Oxidation ◽  
Photoelectrochemical Water Splitting ◽  
Oxidation Reactions ◽  
Photoelectrochemical Water Oxidation ◽  
Spontaneous Phase

Spontaneous phase transition of h-CoO to β-Co(OH)2 is widely applicable for electrochemical and photoelectrochemical water oxidation reactions.

scholarly journals Highly efficient hamburger-like nanostructure of a triadic Ag/Co3O4/BiVO4 photoanode for enhanced photoelectrochemical water oxidation

RSC Advances ◽  
2020 ◽  
Vol 10 (73) ◽  
pp. 45067-45075
Author(s):  
Xintong Gao ◽  
Zhiqun Bai ◽  
Shuai Zhang ◽  
Jingchao Liu ◽  
Zenghe Li
Keyword(s):  
Water Splitting ◽  
Conversion Efficiency ◽  
Water Oxidation ◽  
Photoelectrochemical Water Splitting ◽  
Highly Efficient ◽  
Photoelectrochemical Water Oxidation

A novel hamburger-like nanostructure of a triadic photoanode Ag/Co3O4/BiVO4 was designed to enhance photoelectrochemical water splitting, providing a fascinating pathway to efficiently improve the PEC conversion efficiency.

Synergistic effect of Sn doping and hydrogenation on hematite electrodes for photoelectrochemical water oxidation

2021 ◽  
Author(s):  
Tae Hwa Jeon ◽  
Hae-in Cho ◽  
Hyunwoong Park ◽  
Hyoung-il Kim ◽  
Wonyong Choi
Keyword(s):  
Synergistic Effect ◽  
Charge Transport ◽  
Water Splitting ◽  
Water Oxidation ◽  
Photoelectrochemical Water Splitting ◽  
Sn Doping ◽  
Photoelectrochemical Water Oxidation

A hematite photoanode with dual-modification by Sn doping and H2 treatment exhibits outstanding photoelectrochemical water splitting performance with improved charge transport and separation because of the synchronous presence of Sn4+ and Vo.

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