Single crystal CsTaWO6 nanoparticles for photocatalytic hydrogen production

Due to its band positions and unique crystal structure, CsTaWO6 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 CsTaWO6 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.