Frontispiece: Photochemical and Photoelectrochemical Hydrogen Generation by Splitting Seawater.

Producing hydrogen from water in an efficient way could significantly reduce consumption of fossil fuels. The abundance of water in oceans offers a large‐scale alternative approach for water splitting using seawater. The direct use of seawater for the generation of hydrogen is a difficult and complex process due to the presence of various ions in seawater, which affect the activity of the catalysts and makes the selectivity towards efficient water splitting a challenging task. In their Full Paper on page 18455 ff., C. N. R. Rao et al. report on various ways to efficiently reduce seawater to hydrogen under visible‐light irradiation by various catalysts. [ABSTRACT FROM AUTHOR]