© 2018 Elsevier Inc. The “alchemy of water,” i.e., turning water into fuel (such as hydrogen) with sunlight, is an exciting prospect for sustainable energy. In a recent Chem issue, Atta et al. (2018) developed plasmonic-TiO2nanostructures that bring photocatalytic water splitting one step closer to reality. The “alchemy of water,” i.e., turning water into fuel (such as hydrogen) with sunlight, is an exciting prospect for sustainable energy. In a recent Chem issue, Atta et al. (2018) developed plasmonic-TiO2nanostructures that bring photocatalytic water splitting one step closer to reality.