scholarly journals On the photocatalytic cycle of water splitting with small manganese oxides and the roles of water clusters as direct sources of oxygen molecules

2018 ◽  
Vol 20 (9) ◽  
pp. 6708-6725 ◽  
Author(s):  
Kentaro Yamamoto ◽  
Kazuo Takatsuka
Keyword(s):  
Water Splitting ◽  
Manganese Oxides ◽  
Water Clusters

A study on the photocatalytic cycle of water splitting and coupled proton electron-wavepacket transfer (CPEWT) as key processes of the mechanism.

scholarly journals Nano-sized manganese oxides as biomimetic catalysts for water oxidation in artificial photosynthesis: a review

2012 ◽  
Vol 9 (75) ◽  
pp. 2383-2395 ◽  
Author(s):  
Mohammad Mahdi Najafpour ◽  
Fahimeh Rahimi ◽  
Eva-Mari Aro ◽  
Choon-Hwan Lee ◽  
Suleyman I. Allakhverdiev
Keyword(s):  
Hydrogen Production ◽  
Water Splitting ◽  
Water Oxidation ◽  
Active Sites ◽  
Manganese Oxides ◽  
Metal Compounds ◽  
Functional Models ◽  
Current Densities ◽  
Conversion Efficiencies ◽  
Manganese Compounds

There has been a tremendous surge in research on the synthesis of various metal compounds aimed at simulating the water-oxidizing complex (WOC) of photosystem II (PSII). This is crucial because the water oxidation half reaction is overwhelmingly rate-limiting and needs high over-voltage (approx. 1 V), which results in low conversion efficiencies when working at current densities required for hydrogen production via water splitting. Particular attention has been given to the manganese compounds not only because manganese has been used by nature to oxidize water but also because manganese is cheap and environmentally friendly. The manganese–calcium cluster in PSII has a dimension of about approximately 0.5 nm. Thus, nano-sized manganese compounds might be good structural and functional models for the cluster. As in the nanometre-size of the synthetic models, most of the active sites are at the surface, these compounds could be more efficient catalysts than micrometre (or bigger) particles. In this paper, we focus on nano-sized manganese oxides as functional and structural models of the WOC of PSII for hydrogen production via water splitting and review nano-sized manganese oxides used in water oxidation by some research groups.

Biomineralized Vaterite derived Efficient solid-state synthesis of pure CaMnO3 Perovskite as an effective photocatalyst

CrystEngComm ◽  
2021 ◽  
Author(s):  
Debojit Paul ◽  
Gopal Das
Keyword(s):  
Solid State ◽  
Water Splitting ◽  
Manganese Oxides ◽  
Solid State Synthesis ◽  
Perovskite Materials

In recent years, perovskite materials have attracted immense popularity due to their role in energy-based applications. Calcium manganese oxides are analogous to the systems that perform water-splitting in the natural...

Photoelectrochemical OER activity by employing BiVO4 with manganese oxide co-catalysts

2020 ◽  
Vol 22 (2) ◽  
pp. 811-817 ◽  
Author(s):  
Manjodh Kaur ◽  
Manjeet Chhetri ◽  
C. N. R. Rao
Keyword(s):  
Manganese Oxide ◽  
Water Splitting ◽  
Manganese Oxides ◽  
Photoelectrochemical Water Splitting ◽  
Co Catalysts ◽  
Natural Photosynthesis

Inspired by natural photosynthesis, various manganese oxides have been studied as co-catalysts with BiVO4 for photoelectrochemical water splitting.

scholarly journals Photoinduced water splitting in pyridine water clusters

2016 ◽  
Vol 18 (36) ◽  
pp. 25637-25644 ◽  
Author(s):  
Natalia Esteves-López ◽  
Stephane Coussan ◽  
Claude Dedonder-Lardeux ◽  
Christophe Jouvet
Keyword(s):  
Water Splitting ◽  
Water Clusters ◽  
Pyridinyl Radical

Photon induced water splitting in pyridine–(H2O)n clusters observed through the detection of the pyridinyl radical.

Manganese oxides supported on nano-sized metal oxides as water-oxidizing catalysts for water splitting systems: 2-Water-oxidizing activities

2016 ◽  
Vol 41 (41) ◽  
pp. 18472-18477 ◽  
Author(s):  
Mohammad Mahdi Najafpour ◽  
Foad Ebrahimi ◽  
Mahnaz Abasi ◽  
Seyedeh Maedeh Hosseini
Keyword(s):  
Metal Oxides ◽  
Water Splitting ◽  
Manganese Oxides

scholarly journals Regulating proton-coupled electron transfer for efficient water splitting by manganese oxides at neutral pH

2014 ◽  
Vol 5 (1) ◽  
Author(s):  
Akira Yamaguchi ◽  
Riko Inuzuka ◽  
Toshihiro Takashima ◽  
Toru Hayashi ◽  
Kazuhito Hashimoto ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Water Splitting ◽  
Manganese Oxides ◽  
Neutral Ph ◽  
Proton Coupled Electron Transfer
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