Photocatalytic Water Splitting-1

Dear Colleagues,

Since the discovery of photoassisted electrochemical water splitting on single-crystal titania and platinum electrodes by Fujishima and Honda, published in Nature in 1972, a number of trials for the application of this concept to heterogeneous photocatalysis have been made. However, even after more than 40 years, the number of successful examples is limited and the efficiency is still low, especially for systems using visible-light irradiation. Control of the band position of semiconducting materials to fit redox reactions by doping or modification and combination of two photocatalysts to drive reduction and oxidation separately, i.e., Z-scheme systems, have been proposed, but a new concept/strategy seems to be required for the realization of efficient photocatalytic water splitting.

In this Special Issue, recent studies on photocatalytic and photoelectrochemical water splitting are assembled to provide a broad overview of its current status, outstanding barriers, and future outlook.

Prof. Dr. Bunsho Ohtani
Prof. Dr. Jae Sung Lee
Guest Editors

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