Precious-metal free photoelectrochemical water splitting with immobilised molecular Ni and Fe redox catalysts.

ABSTRACT: Splitting water into hydrogen and oxygen with molecular catalysts and light has been a long-established challenge. Approaches in homogeneous systems have been met with little success and the integration of molecular catalysts in photoelectrochemical cells is challenging due to inaccessibility and incompatibility of functional hybrid molecule/material electrodes with long-term stability in aqueous solution. Here, we present the first example of light-driven water splitting achieved with precious-metal-free molecular catalysts driving both oxygen and hydrogen evolution reactions. Mesoporous TiO₂ was employed as a low-cost scaffold with long-term stability for anchoring a phosphonic acid-modified nickel(ii) bis-diphosphine catalyst (NiP) for electrocatalytic proton reduction

SUBMITTER: Rosser TE 

PROVIDER: S-EPMC6013811 | biostudies-literature | 2016 Jul

REPOSITORIES: biostudies-literature