Organometallic ni pincer complexes for the electrocatalytic production of hydrogen.

Summary of "Organometallic ni pincer complexes for the electrocatalytic production of hydrogen."

Nonplatinum metals are needed to perform cost-effective water reduction electrocatalysis to enable technological implementation of a proposed hydrogen economy. We describe electrocatalytic proton reduction and H(2) production by two organometallic nickel complexes with tridentate pincer ligands. The kinetics of H(2) production from voltammetry is consistent with an overall third order rate law: the reaction is second order in acid and first order in catalyst. Hydrogen production with 90-95% Faradaic yields was confirmed by gas analysis, and UV-vis spectroscopy suggests that the ligand remains bound to the catalyst over the course of the reaction. A computational study provides mechanistic insights into the proposed catalytic cycle. Furthermore, two proposed intermediates in the proton reduction cycle were isolated in a representative system and show a catalytic response akin to the parent compound.


Department of Chemistry, Yale University , 225 Prospect Street, New Haven, Connecticut 06520-8107, United States.

Journal Details

This article was published in the following journal.

Name: Inorganic chemistry
ISSN: 1520-510X
Pages: 8704-9


DeepDyve research library

PubMed Articles [8448 Associated PubMed Articles listed on BioPortfolio]

Effect of biochar addition on hydrogen and methane production in two-phase anaerobic digestion of aqueous carbohydrates food waste.

Effect of biochar addition on hydrogen and methane production in two-phase anaerobic digestion of aqueous carbohydrates was studied using bench-scale bioreactors. The cultures with biochar additions w...

Iron Polypyridyl Complexes for Photocatalytic Hydrogen Generation.

A series of Fe(III) complexes were recently reported that are stable and active electrocatalysts for reducing protons into hydrogen gas. Herein, we report the incorporation of these electrocatalysts i...

Nickel-centred proton reduction catalysis in a model of NiFe hydrogenase.

Hydrogen production through water splitting is one of the most promising solutions for the storage of renewable energy. [NiFe] hydrogenases are organometallic enzymes containing nickel and iron centre...

Trimetallic TriStar Nanostructures: Tuning Electronic and Surface Structures for Enhanced Electrocatalytic Hydrogen Evolution.

PtFeCo alloy nanostructures in a TriStar shape with tunable Fe and Co contents are developed for electrocatalytic hydrogen evolution reaction (HER). With electronic and surface structures well-tailore...

Co-production of hydrogen and methane from herbal medicine wastewater by a combined UASB system with immobilized sludge (H2 production) and UASB system with suspended sludge (CH4 production).

An upflow anaerobic sludge bed (UASB) system with sludge immobilized on granular activated carbon was developed for fermentative hydrogen production continuously from herbal medicine wastewater at var...

Clinical Trials [744 Associated Clinical Trials listed on BioPortfolio]

Combination of Dental Bleaching Techniques, Randomized Clinical Trial

To determine the effectiveness of combining different concentrations of hydrogen peroxide and carbamide used during tooth bleaching.

Therapeutic Effects of Hydrogen on Steroid-refractory/or Steroid-dependent cGVHD

This study suggested that hydrogen has a potential as an effective and safe therapeutic agent on cGVHD.

Molecular Hydrogen for Cognitive Function and Performance in Elderly

A variety of non-pharmacological interventions have been used in the management of Alzheimer's disease (AD) and similar cognitive disorders in elderly, yet no therapeutic modality has demo...

Exhaled Hydrogen Sulphide as a Biomarker of Airways Disease in Asthma

The purpose of this study will be to determine whether there is any role for measuring Hydrogen Sulphide (H2S) in the exhaled breath in terms of management of the patient with asthma. ...

The Effect of Probioticson Bloating in IBS

The purpose of the study is to establish an in-vitro method to evaluate the effect of probiotics on gas production in feces (hydrogen and methane)

Medical and Biotech [MESH] Definitions

Systems of enzymes which function sequentially by catalyzing consecutive reactions linked by common metabolic intermediates. They may involve simply a transfer of water molecules or hydrogen atoms and may be associated with large supramolecular structures such as MITOCHONDRIA or RIBOSOMES.

A large multisubunit protein complex found in the THYLAKOID MEMBRANE. It uses light energy derived from LIGHT-HARVESTING PROTEIN COMPLEXES to catalyze the splitting of WATER into DIOXYGEN and of reducing equivalents of HYDROGEN.

Organometallic compounds which contain tin and three alkyl groups.

Hydrogen. The first chemical element in the periodic table. It has the atomic symbol H, atomic number 1, and atomic weight 1. It exists, under normal conditions, as a colorless, odorless, tasteless, diatomic gas. Hydrogen ions are PROTONS. Besides the common H1 isotope, hydrogen exists as the stable isotope DEUTERIUM and the unstable, radioactive isotope TRITIUM.

A species of EDWARDSIELLA distinguished by its hydrogen sulfide production. (From Bergey's Manual of Determinative Bacteriology, 9th ed)

Quick Search

DeepDyve research library

Searches Linking to this Article