scholarly journals Highly Active and Robust Cp* Iridium Complexes for Catalytic Water Oxidation

2009 ◽  
Vol 131 (25) ◽  
pp. 8730-8731 ◽  
Author(s):  
Jonathan F. Hull ◽  
David Balcells ◽  
James D. Blakemore ◽  
Christopher D. Incarvito ◽  
Odile Eisenstein ◽  
...  
Keyword(s):  
Water Oxidation ◽  
Iridium Complexes ◽  
Highly Active

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.

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.

Controllable growth of graphdiyne layered nanosheets for high-performance water oxidation

2021 ◽  
Author(s):  
Shuya Zhao ◽  
Yurui Xue ◽  
Zhongqiang Wang ◽  
Zhiqiang Zheng ◽  
Xiaoyu Luan ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Water Oxidation ◽  
High Performance ◽  
Low Cost ◽  
Highly Active ◽  
Controllable Growth

Developing highly active, stable and low-cost electrocatalysts capable of an efficient oxygen evolution reaction (OER) is urgent and challenging.

An All-Inorganic, Stable, and Highly Active Tetraruthenium Homogeneous Catalyst for Water Oxidation

2008 ◽  
Vol 47 (21) ◽  
pp. 3896-3899 ◽  
Author(s):  
Yurii V. Geletii ◽  
Bogdan Botar ◽  
Paul Kögerler ◽  
Daniel A. Hillesheim ◽  
Djamaladdin G. Musaev ◽  
...  
Keyword(s):  
Water Oxidation ◽  
Homogeneous Catalyst ◽  
Highly Active

Visible-Light-Responsive Photoanodes for Highly Active, Stable Water Oxidation

2018 ◽  
Vol 57 (28) ◽  
pp. 8396-8415 ◽  
Author(s):  
Jeongsuk Seo ◽  
Hiroshi Nishiyama ◽  
Taro Yamada ◽  
Kazunari Domen
Keyword(s):  
Visible Light ◽  
Water Oxidation ◽  
Highly Active

Nanostructured Manganese Oxides as Highly Active Water Oxidation Catalysts: A Boost from Manganese Precursor Chemistry

ChemSusChem ◽  
2014 ◽  
Vol 7 (8) ◽  
pp. 2202-2211 ◽  
Author(s):  
Prashanth W. Menezes ◽  
Arindam Indra ◽  
Patrick Littlewood ◽  
Michael Schwarze ◽  
Caren Göbel ◽  
...  
Keyword(s):  
Water Oxidation ◽  
Manganese Oxides ◽  
Precursor Chemistry ◽  
Oxidation Catalysts ◽  
Highly Active ◽  
Manganese Precursor

Porous CoO-CeO2 heterostructures as highly active and stable electrocatalysts for water oxidation

2018 ◽  
Vol 43 (50) ◽  
pp. 22529-22537 ◽  
Author(s):  
Xiaona Ren ◽  
Fang Hou ◽  
Fangyuan Wang ◽  
Xiangwen Zhang ◽  
Qingfa Wang
Keyword(s):  
Water Oxidation ◽  
Highly Active

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
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