Single crystal CsTaWO6 nanoparticles for photocatalytic hydrogen production

Abstract Due to its band positions and unique crystal structure, CsTaWO 6 is a very interesting model system for the investigation of morphological influences on the performance in photocatalytic Hydrogen generation and water splitting. Here we present the synthesis of phase-pure and single crystal CsTaWO 6 nanoparticles in the range of 8–30 nm via hydrothermal synthesis. The nanoparticle size was controlled by adjusting the amount of base in the synthesis. Nanoparticles of different sizes were used to perform photocatalytic Hydrogen generation from water/methanol. The optimum particle size was found to be around 13 nm with regard to maximum gas evolution activity.