scholarly journals Water oxidation catalyzed by molecular di- and nonanuclear Fe complexes: importance of a proper ligand framework

2016 ◽  
Vol 45 (34) ◽  
pp. 13289-13293 ◽  
Author(s):  
Biswanath Das ◽  
Bao-Lin Lee ◽  
Erik A. Karlsson ◽  
Torbjörn Åkermark ◽  
Andrey Shatskiy ◽  
...  
Keyword(s):  
Water Oxidation ◽  
Iron Complexes ◽  
Iron Complex ◽  
Oxidation Catalysts ◽  
Dinuclear Iron ◽  
Fe Complexes

The synthesis of two molecular iron complexes, a dinuclear iron(iii,iii) complex and a nonanuclear iron complex, and their use as water oxidation catalysts is described.

Three bonding modes of bis(2-picolyl)phenylphosphine at iron: isolation of a dinuclear iron complex featuring dearomatized pyridine moieties

2015 ◽  
Vol 44 (16) ◽  
pp. 7500-7505 ◽  
Author(s):  
G. Jin ◽  
L. Vendier ◽  
Y. Coppel ◽  
S. Sabo-Etienne ◽  
S. Bontemps
Keyword(s):  
Iron Complexes ◽  
Iron Complex ◽  
Coordination Modes ◽  
Dinuclear Iron

Three iron complexes displaying different coordination modes of the NPN ligand were isolated, including one dinuclear compound featuring dearomatized pyridine moieties.

Mononuclear Iron Complexes with Tetraazadentate Ligands as Water Oxidation Catalysts

2016 ◽  
Vol 2016 (20) ◽  
pp. 3262-3268 ◽  
Author(s):  
Gayatri Panchbhai ◽  
Wangkheimayum Marjit Singh ◽  
Biswanath Das ◽  
Reuben T. Jane ◽  
Anders Thapper
Keyword(s):  
Water Oxidation ◽  
Iron Complexes ◽  
Oxidation Catalysts ◽  
Mononuclear Iron

A dinuclear iron complex as an efficient electrocatalyst for homogeneous water oxidation reaction

2020 ◽  
Vol 10 (9) ◽  
pp. 2830-2837
Author(s):  
Suhana Karim ◽  
Aratrika Chakraborty ◽  
Debabrata Samanta ◽  
Ennio Zangrando ◽  
Totan Ghosh ◽  
...  
Keyword(s):  
Schiff Base ◽  
Renewable Energy ◽  
Water Splitting ◽  
Schiff Base Ligand ◽  
Water Oxidation ◽  
Oxidation Reaction ◽  
Real Life ◽  
Iron Complex ◽  
Dinuclear Iron

A novel dinuclear iron complex of a Schiff base ligand has been exploited as a homogeneous water splitting electrocatalyst having possible real life application in renewable energy.

Mechanism of water oxidation by non-heme iron catalysts when driven with sodium periodate

2014 ◽  
Vol 43 (33) ◽  
pp. 12501-12513 ◽  
Author(s):  
Alexander R. Parent ◽  
Takashi Nakazono ◽  
Shu Lin ◽  
Satoshi Utsunomiya ◽  
Ken Sakai
Keyword(s):  
Water Oxidation ◽  
Sodium Periodate ◽  
Iron Complexes ◽  
Heme Iron ◽  
Iron Catalysts ◽  
Dinuclear Complexes ◽  
Oxidation Catalysts ◽  
Monomeric Species ◽  
Non Heme Iron

Non-heme iron complexes were determined to serve as homogeneous water oxidation catalysts when driven with sodium periodate. Both mononuclear and dinuclear complexes were found to be active for water oxidation, with the monomeric species exhibiting higher rates.

A dinuclear iron complex as a precatalyst for water oxidation under alkaline conditions

2021 ◽  
Author(s):  
Amirreza Valizadeh ◽  
Rahman Bikas ◽  
Pavlo Aleshkevych ◽  
Anna Kozakiewicz ◽  
Suleyman I. Allakhverdiev ◽  
...  
Keyword(s):  
Water Oxidation ◽  
Iron Complex ◽  
Dinuclear Iron ◽  
Alkaline Conditions

Revisiting Dinuclear Ruthenium Water Oxidation Catalysts: Effect of Bridging Ligand Architecture on Catalytic Activity

2021 ◽  
Vol 60 (3) ◽  
pp. 1806-1813
Author(s):  
Husain N. Kagalwala ◽  
Mahesh S. Deshmukh ◽  
Elamparuthi Ramasamy ◽  
Neelima Nair ◽  
Rongwei Zhou ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Water Oxidation ◽  
Oxidation Catalysts ◽  
Bridging Ligand ◽  
Dinuclear Ruthenium

Heterogeneous Water Oxidation Catalysts for Molecular Anodes and Photoanodes

Solar RRL ◽  
2021 ◽  
Author(s):  
Matthew V. Sheridan ◽  
Benjamin D. Sherman ◽  
Yi Xie ◽  
Ying Wang
Keyword(s):  
Water Oxidation ◽  
Oxidation Catalysts

Dinuclear [OSSO]-Fe complexes for the reaction of CO2 with epoxides

2021 ◽  
Author(s):  
Veronica Paradiso ◽  
Francesco Della Monica ◽  
David Hermann Lamparelli ◽  
Sara D'Aniello ◽  
Bernhard Rieger ◽  
...  
Keyword(s):  
Catalytic System ◽  
Turnover Frequency ◽  
Dinuclear Iron ◽  
Fe Complexes ◽  
Iron Based

A dinuclear iron-based catalytic system, bearing a new alkyl-bridged bis-[OSSO]-type ligand, for the coupling of CO2 with epoxides is reported. Turnover frequency up to 1680 h-1 was recorded for the...

scholarly journals Design of Molecular Water Oxidation Catalysts Stabilized by Ultrathin Inorganic Overlayers—Is Active Site Protection Necessary?

Inorganics ◽  
2018 ◽  
Vol 6 (4) ◽  
pp. 105 ◽  
Author(s):  
Laurent Sévery ◽  
Sebastian Siol ◽  
S. Tilley
Keyword(s):  
Water Oxidation ◽  
Atomic Layer ◽  
Deposition Process ◽  
Operating Conditions ◽  
Molecular Water ◽  
Side Reactions ◽  
Aqueous Environment ◽  
Oxidation Catalysts ◽  
Initial Onset ◽  
Anchoring Groups

Anchored molecular catalysts provide a good step towards bridging the gap between homogeneous and heterogeneous catalysis. However, applications in an aqueous environment pose a serious challenge to anchoring groups in terms of stability. Ultrathin overlayers embedding these catalysts on the surface using atomic layer deposition (ALD) are an elegant solution to tackle the anchoring group instability. The propensity of ALD precursors to react with water leads to the question whether molecules containing aqua ligands, such as most water oxidation complexes, can be protected without side reactions and deactivation during the deposition process. We synthesized two iridium and two ruthenium-based water oxidation catalysts, which contained an aqua ligand (Ir–OH2 and Ru–OH2) or a chloride (Ir–Cl and Ru–Cl) that served as a protecting group for the former. Using a ligand exchange reaction on the anchored and partially embedded Ru–Cl, the optimal overlayer thickness was determined to be 1.6 nm. An electrochemical test of the protected catalysts on meso-ITO showed different behaviors for the Ru and the Ir catalysts. The former showed no onset difference between protected and non-protected versions, but limited stability. Ir–Cl displayed excellent stability, whilst the unprotected catalyst Ir–OH2 showed a later initial onset. Self-regeneration of the catalytic activity of Ir–OH2 under operating conditions was observed. We propose chloride ligands as generally applicable protecting groups for catalysts that are to be stabilized on surfaces using ALD.

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