scholarly journals Photo-assisted water oxidation by high-nuclearity cobalt-oxo cores: tracing the catalyst fate during oxygen evolution turnover

2017 ◽  
Vol 19 (10) ◽  
pp. 2416-2426 ◽  
Author(s):  
M. Natali ◽  
I. Bazzan ◽  
S. Goberna-Ferrón ◽  
R. Al-Oweini ◽  
M. Ibrahim ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Visible Light ◽  
Oxygen Evolution ◽  
Water Oxidation

Cobalt-oxo cores with Co>9 enable oxygen evolution under visible light with diffusional electron transfer and 32 ET events in 60 ms.

Enhanced oxygen evolution on visible light responsive TaON photocatalysts co-loaded with highly active Ru species for IO3− reduction and Co species for water oxidation

2017 ◽  
Vol 1 (4) ◽  
pp. 748-754 ◽  
Author(s):  
Yukari Iwase ◽  
Osamu Tomita ◽  
Masanobu Higashi ◽  
Ryu Abe
Keyword(s):  
Visible Light ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
Water Oxidation ◽  
Redox Couple ◽  
Highly Active ◽  
One Step ◽  
Type Water ◽  
Ru Species

Loading an appropriate cocatalyst significantly enhances the activity of semiconductor photocatalysts in both conventional one-step water splitting and Z-scheme-type water splitting with a redox couple.

scholarly journals Hollow CoP/FeP4 Heterostructural Nanorods Interwoven by CNT as a Highly Efficient Electrocatalyst for Oxygen Evolution Reactions

Nanomaterials ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1450
Author(s):  
Yanfang Liu ◽  
Yong Li ◽  
Qi Wu ◽  
Zhe Su ◽  
Bin Wang ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Oxygen Evolution ◽  
Water Oxidation ◽  
Active Sites ◽  
High Performance ◽  
Hydrothermal Reaction ◽  
Clean Energy ◽  
Electrochemical Performances ◽  
Ion Diffusion ◽  
Kinetics Of

Electrolysis of water to produce hydrogen is crucial for developing sustainable clean energy and protecting the environment. However, because of the multi-electron transfer in the oxygen evolution reaction (OER) process, the kinetics of the reaction is seriously hindered. To address this issue, we designed and synthesized hollow CoP/FeP4 heterostructural nanorods interwoven by carbon nanotubes (CoP/FeP4@CNT) via a hydrothermal reaction and a phosphorization process. The CoP/FeP4@CNT hybrid catalyst delivers prominent OER electrochemical performances: it displays a substantially smaller Tafel slope of 48.0 mV dec−1 and a lower overpotential of 301 mV at 10 mA cm−2, compared with an RuO2 commercial catalyst; it also shows good stability over 20 h. The outstanding OER property is mainly attributed to the synergistic coupling between its unique CNT-interwoven hollow nanorod structure and the CoP/FeP4 heterojunction, which can not only guarantee high conductivity and rich active sites, but also greatly facilitate the electron transfer, ion diffusion, and O2 gas release and significantly enhance its electrocatalytic activity. This work offers a facile method to develop transition metal-based phosphide heterostructure electrocatalysts with a unique hierarchical nanostructure for high performance water oxidation.

Au nanoparticle-doped Co3O4–CoFe2O4@SiO2 as a catalyst for visible-light-driven water oxidation

2018 ◽  
Vol 42 (18) ◽  
pp. 14757-14765 ◽  
Author(s):  
Wenlan Ma ◽  
Hui Li ◽  
Qian Xu ◽  
Yi Zhang ◽  
Wei Wang ◽  
...  
Keyword(s):  
Dielectric Constant ◽  
Electron Transfer ◽  
Visible Light ◽  
Water Oxidation ◽  
Transfer Rate ◽  
Au Nanoparticle ◽  
Low Dielectric Constant ◽  
Electron Transfer Rate ◽  
Low Dielectric ◽  
Visible Light Driven

Composites of low dielectric constant SiO2, Au and metal oxide was obtained, it showed higher O2 evolution performance due to enhancing the electron transfer rate.

Photoanodes for water oxidation with visible light based on a pentacyclic quinoid organic dye enabling proton-coupled electron transfer

2020 ◽  
Vol 56 (15) ◽  
pp. 2248-2251
Author(s):  
Giulia Alice Volpato ◽  
Martina Marasi ◽  
Thomas Gobbato ◽  
Francesca Valentini ◽  
Federica Sabuzi ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Visible Light ◽  
Water Oxidation ◽  
Visible Region ◽  
Organic Dye ◽  
Proton Coupled Electron Transfer

A novel pentacyclic quinoid photosensitizer with extended absorption in the visible region and enabling proton-coupled electron transfer is employed in photoelectrodes for water oxidation in combination with a ruthenium polyoxometalate catalyst.

Solar-driven Z-scheme water splitting using tantalum/nitrogen co-doped rutile titania nanorod as an oxygen evolution photocatalyst

2017 ◽  
Vol 5 (23) ◽  
pp. 11710-11719 ◽  
Author(s):  
Akinobu Nakada ◽  
Shunta Nishioka ◽  
Junie Jhon M. Vequizo ◽  
Kanemichi Muraoka ◽  
Tomoki Kanazawa ◽  
...  
Keyword(s):  
Visible Light ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
Water Oxidation ◽  
Visible Light Active ◽  
Rutile Titania ◽  
Co Doped

Tantalum and nitrogen co-doped rutile TiO2 nanorods were developed as a visible-light-active water oxidation photocatalyst for solar-driven Z-scheme water splitting.

A photonic crystal-based CdS–Au–WO3 heterostructure for efficient visible-light photocatalytic hydrogen and oxygen evolution

RSC Advances ◽  
2014 ◽  
Vol 4 (30) ◽  
pp. 15689-15694 ◽  
Author(s):  
Xiaofeng Cui ◽  
Yajun Wang ◽  
Guiyuan Jiang ◽  
Zhen Zhao ◽  
Chunming Xu ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Photonic Crystal ◽  
Visible Light ◽  
Oxygen Evolution ◽  
Visible Light Photocatalytic

Photonic crystal-based CdS–Au–WO3 heterostructure that integrates slow photon effect and superior electron transfer exhibits efficient photocatalytic H2 and O2 evolution.

Solution-phase vertical growth of aligned NiCo2O4 nanosheet arrays on Au nanosheets with weakened oxygen–hydrogen bonds for photocatalytic oxygen evolution

Nanoscale ◽  
2020 ◽  
Vol 12 (10) ◽  
pp. 6195-6203
Author(s):  
Suisui He ◽  
Jian Chai ◽  
Siyu Lu ◽  
Xijiao Mu ◽  
Ruitong Liu ◽  
...  
Keyword(s):  
Hydrogen Bonds ◽  
Visible Light ◽  
Oxygen Evolution ◽  
Water Oxidation ◽  
Solution Phase ◽  
Light Water ◽  
Vertical Growth ◽  
Nanosheet Arrays ◽  
Sandwich Type

We demonstrate the synthesis of vertically arranged NiCo2O4–Au–NiCo2O4 sandwich-type heterojunctions with weakened oxygen–hydrogen bonds as an efficient photocatalyst for visible-light water oxidation.

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