Self-assembled layered hybrid [Ru(bpy)3]2+/manganese(iii,iv) oxide: a new and efficient strategy for water oxidation

Najafpour, Mohammad Mahdi

doi:10.1039/c1cc13895b

Cited by 57 publications

(21 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[28] On the other hand, delithiation of nanocrystalline LiMn 2 O 4 with dilute nitric acid produced l-MnO 2 . [43] Manganese oxide nanoclusters supported on the mesoporous silica KIT-6 were employed for the stacking of catalytic particles to attain a high rate of oxygen production per metal center as well as per projected geometrical area. Systematic studies by Jiao and co-workers showed that replacing metal ion from K-d-MnO 2 nanoparticles by Na + produced isostructured Na-d-MnO 2 which has comparable photochemical water oxidation activities.…”

Section: Photo-assisted Water Oxidationmentioning

confidence: 99%

“…[29c] A close contact of the catalyst and the photosensitizer by the self-assembly of cationic [Ru(bpy) 3 ] 2 + between layers of anionic Mn III,IV oxide was also demonstrated. [43] Manganese oxide nanoclusters supported on the mesoporous silica KIT-6 were employed for the stacking of catalytic particles to attain a high rate of oxygen production per metal center as well as per projected geometrical area. [32] In line with the recent trend of using amorphous materials for catalytic reactions, Suib and co-workers reported higher TON for chemical and photochemical water oxidation with amorphous manganese oxide compared to tunnel and layered structures.…”

Section: Photo-assisted Water Oxidationmentioning

confidence: 99%

See 1 more Smart Citation

Uncovering Structure–Activity Relationships in Manganese‐Oxide‐Based Heterogeneous Catalysts for Efficient Water Oxidation

2015

View full text Add to dashboard Cite

Artificial photosynthesis by harvesting solar light into chemical energy could solve the problems of energy conversion and storage in a sustainable way. In nature, CO2 and H2 O are transformed into carbohydrates by photosynthesis to store the solar energy in chemical bonds and water is oxidized to O2 in the oxygen-evolving center (OEC) of photosystem II (PS II). The OEC contains CaMn4 O5 cluster in which the metals are interconnected through oxido bridges. Inspired by biological systems, manganese-oxide-based catalysts have been synthesized and explored for water oxidation. Structural, functional modeling, and design of the materials have prevailed over the years to achieve an effective and stable catalyst system for water oxidation. Structural flexibility with eg(1) configuration of Mn(III) , mixed valency in manganese, and higher surface area are the main requirements to attain higher efficiency. This Minireview discusses the most recent progress in heterogeneous manganese-oxide-based catalysts for efficient chemical, photochemical, and electrochemical water oxidation as well as the structural requirements for the catalyst to perform actively.

show abstract

Section: Photo-assisted Water Oxidationmentioning

confidence: 99%

Section: Photo-assisted Water Oxidationmentioning

confidence: 99%

Uncovering Structure–Activity Relationships in Manganese‐Oxide‐Based Heterogeneous Catalysts for Efficient Water Oxidation

2015

View full text Add to dashboard Cite

show abstract

“…The procedure is simple and produced an efficient catalyst (0. 54 O labelling studies proved that water was the source of dioxygen [79].…”

Section: Amorphous Manganese Oxidementioning

confidence: 98%

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

Najafpour

Rahimi

Aro

et al. 2012

J. R. Soc. Interface.

Self Cite

128

View full text Add to dashboard Cite

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.

show abstract

“…Mn oxides were reported as water-oxidizing catalysts for artificial photosynthetic systems [23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40]. Among Mn oxides, nanolayered Mn oxides with different organic or inorganic ions between layers are efficient and stable in water oxidation [41].…”

Section: Introductionmentioning

confidence: 99%

The effect of different metal ions between nanolayers of manganese oxide on water oxidation

Najafpour

Isaloo

Ghobadi

et al. 2014

Journal of Photochemistry and Photobiology B: Biology

Self Cite

View full text Add to dashboard Cite

Self-assembled layered hybrid [Ru(bpy)3]2+/manganese(iii,iv) oxide: a new and efficient strategy for water oxidation

Abstract: For the first time, a self-assembled layered hybrid [Ru(bpy)(3)](2+)/manganese(III,IV) as a water oxidizing system is reported.

Cited by 57 publications

References 18 publications

Uncovering Structure–Activity Relationships in Manganese‐Oxide‐Based Heterogeneous Catalysts for Efficient Water Oxidation

Uncovering Structure–Activity Relationships in Manganese‐Oxide‐Based Heterogeneous Catalysts for Efficient Water Oxidation

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

The effect of different metal ions between nanolayers of manganese oxide on water oxidation

Contact Info

Product

Resources

About