Water Oxidation with Molecularly Defined Iridium Complexes: Insights into Homogeneous versus Heterogeneous Catalysis

2012 ◽  
Vol 18 (40) ◽  
pp. 12749-12758 ◽  
Author(s):  
Henrik Junge ◽  
Nicolas Marquet ◽  
Anja Kammer ◽  
Stefania Denurra ◽  
Matthias Bauer ◽  
...  
Keyword(s):  
Heterogeneous Catalysis ◽  
Water Oxidation ◽  
Iridium Complexes

scholarly journals Cover Picture: Water Oxidation with Molecularly Defined Iridium Complexes: Insights into Homogeneous versus Heterogeneous Catalysis (Chem. Eur. J. 40/2012)

2012 ◽  
Vol 18 (40) ◽  
pp. 12533-12533 ◽  
Author(s):  
Henrik Junge ◽  
Nicolas Marquet ◽  
Anja Kammer ◽  
Stefania Denurra ◽  
Matthias Bauer ◽  
...  
Keyword(s):  
Heterogeneous Catalysis ◽  
Water Oxidation ◽  
Iridium Complexes

Distinguishing Homogeneous from Heterogeneous Catalysis in Electrode-Driven Water Oxidation with Molecular Iridium Complexes

2011 ◽  
Vol 133 (27) ◽  
pp. 10473-10481 ◽  
Author(s):  
Nathan D. Schley ◽  
James D. Blakemore ◽  
Navaneetha K. Subbaiyan ◽  
Christopher D. Incarvito ◽  
Francis D’Souza ◽  
...  
Keyword(s):  
Heterogeneous Catalysis ◽  
Water Oxidation ◽  
Iridium Complexes

scholarly journals Noncovalent Immobilization of Pentamethylcyclopentadienyl Iridium Complexes on Ordered Mesoporous Carbon for Electrocatalytic Water Oxidation

Small Science ◽  
2021 ◽  
Vol 1 (11) ◽  
pp. 2170027
Author(s):  
Ana M. Geer ◽  
Chang Liu ◽  
Charles B. Musgrave ◽  
Christopher Webber ◽  
Grayson Johnson ◽  
...  
Keyword(s):  
Water Oxidation ◽  
Mesoporous Carbon ◽  
Ordered Mesoporous Carbon ◽  
Iridium Complexes ◽  
Ordered Mesoporous

scholarly journals Post Synthetic Defect Engineering of UiO-66 Metal-Organic Framework with Iridium(III)-HEDTA Complex and Application in Catalysis for Water Oxydation

2019 ◽  
Author(s):  
Ferdinando Costantino ◽  
Alceo Macchioni ◽  
Giordano Gatto ◽  
Roberto Bondi ◽  
Fabio Marmottini
Keyword(s):  
Water Oxidation ◽  
Metal Organic Framework ◽  
Partial Substitution ◽  
Iridium Complexes ◽  
Defect Engineering ◽  
Cerium Ammonium Nitrate ◽  
Highly Active ◽  
Metal Organic ◽  
Heterogenous Catalyst ◽  
Sacrificial Agent

Clean production of renewable fuels is a great challenge of our scientific community. Iridium complexes have demonstrated a superior catalytic activity in the water oxidation (WO) reaction, which is a crucial step in water splitting process. Herein we have used a defective zirconium MOF with UiO-66 structure as support of a highly active Ir complex based on EDTA with formula [Ir(HEDTA)Cl]Na. The defects are induced by the partial substitution of tereftalic acid with smaller formiate groups. Anchoring of the complex occurs through a post-synthetic exchange of formiate anions, coordinated at the zirconium clusters of the MOF, with the free carboxylate group of the [Ir(HEDTA)Cl]-complex. The modified material was tested as heterogenous catalyst for the WO reaction by using Cerium Ammonium Nitrate as sacrificial agent. Although TOF and TON values are comparable to those of other iridium heterogenized catalysts, the MOF exhibits iridium leaching not limited at the first catalytic run, as usually observed, suggesting a lack of stability of the hybrid system under strong oxidative conditions.

Photocatalytic water oxidation mediated by iridium complexes

2017 ◽  
Vol 290 ◽  
pp. 10-18 ◽  
Author(s):  
Ilaria Corbucci ◽  
Kevin Ellingwood ◽  
Lucia Fagiolari ◽  
Cristiano Zuccaccia ◽  
Fausto Elisei ◽  
...  
Keyword(s):  
Water Oxidation ◽  
Iridium Complexes

scholarly journals Post Synthetic Defect Engineering of UiO-66 Metal–Organic Framework with An Iridium(III)-HEDTA Complex and Application in Water Oxidation Catalysis

Inorganics ◽  
2019 ◽  
Vol 7 (10) ◽  
pp. 123 ◽  
Author(s):  
Giordano Gatto ◽  
Alceo Macchioni ◽  
Roberto Bondi ◽  
Fabio Marmottini ◽  
Ferdinando Costantino
Keyword(s):  
Water Oxidation ◽  
Metal Organic Framework ◽  
Oxidation Catalysis ◽  
Partial Substitution ◽  
Iridium Complexes ◽  
Cerium Ammonium Nitrate ◽  
Highly Active ◽  
Water Oxidation Catalysis ◽  
Metal Organic ◽  
Organic Framework

Clean production of renewable fuels is a great challenge of our scientific community. Iridium complexes have demonstrated a superior catalytic activity in the water oxidation (WO) reaction, which is a crucial step in water splitting process. Herein, we have used a defective zirconium metal–organic framework (MOF) with UiO-66 structure as support of a highly active Ir complex based on EDTA with the formula [Ir(HEDTA)Cl]Na. The defects are induced by the partial substitution of terephthalic acid with smaller formate groups. Anchoring of the complex occurs through a post-synthetic exchange of formate anions, coordinated at the zirconium clusters of the MOF, with the free carboxylate group of the [Ir(HEDTA)Cl]− complex. The modified material was tested as a heterogeneous catalyst for the WO reaction by using cerium ammonium nitrate (CAN) as the sacrificial agent. Although turnover frequency (TOF) and turnover number (TON) values are comparable to those of other iridium heterogenized catalysts, the MOF exhibits iridium leaching not limited at the first catalytic run, as usually observed, suggesting a lack of stability of the hybrid system under strong oxidative conditions.

ChemInform Abstract: Crossing the Divide Between Homogeneous and Heterogeneous Catalysis in Water Oxidation.

ChemInform ◽  
2014 ◽  
Vol 45 (13) ◽  
pp. no-no
Author(s):  
Aaron K. Vannucci ◽  
Leila Alibabaei ◽  
Mark D. Losego ◽  
Javier J. Concepcion ◽  
Berc Kalanyan ◽  
...  
Keyword(s):  
Heterogeneous Catalysis ◽  
Water Oxidation

scholarly journals Relevance of Chemical vs. Electrochemical Oxidation of Tunable Carbene Iridium Complexes for Catalytic Water Oxidation

2020 ◽  
Vol 2020 (10) ◽  
pp. 801-812 ◽  
Author(s):  
Marta Olivares ◽  
Cornelis J. M. van der Ham ◽  
Velabo Mdluli ◽  
Markus Schmidtendorf ◽  
Helge Müller-Bunz ◽  
...  
Keyword(s):  
Electrochemical Oxidation ◽  
Water Oxidation ◽  
Iridium Complexes

scholarly journals Heterogeneous Catalysis for Water Oxidation by an Iridium Complex Immobilized on Bipyridine-Periodic Mesoporous Organosilica

2016 ◽  
Vol 128 (28) ◽  
pp. 8075-8079 ◽  
Author(s):  
Xiao Liu ◽  
Yoshifumi Maegawa ◽  
Yasutomo Goto ◽  
Kenji Hara ◽  
Shinji Inagaki
Keyword(s):  
Heterogeneous Catalysis ◽  
Water Oxidation ◽  
Iridium Complex ◽  
Periodic Mesoporous Organosilica ◽  
Mesoporous Organosilica
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