Plasmon‐induced Photocatalytic Hydrogen Production from Water Using Binary Au Nanoparticles/Reduced Graphene Oxide Nanocomposites

TiO2-graphene nanocomposites. UV-assisted photocatalytic reduction of graphene oxide.

Graphene oxide suspended in ethanol undergoes reduction as it accepts electrons from UV-irradiated TiO(2) suspensions. The reduction is accompanied by changes in the absorption of the graphene oxide, as the color of the suspension shifts from brown to black. The direct interaction between TiO(2) particles and graphene sheets hinders the collapse of exfoliated sheets of graphene. Solid films cas...

Graphene/Semiconductor Nanocomposites: Preparation and Application for Photocatalytic Hydrogen Evolution

Photocatalytic Hydrogen Generation from Water using Solar Radiation

Solar photocatalytic water splitting is considered as a potential method for hydrogen production as both solar energy and water are renewable. The major task is the design of suitable photocatalysts, which can work efficiently under solar radiation, especially under visible light. The performance of the visible light active photocatalysts synthesized till date is far from satisfactory for any p...

Photocatalytic production of hydrogen on Ni/NiO/KNbO3/CdS nanocomposites using visible light†

The photocatalytic production of H2 from water splitting was demonstrated on Ni/NiO/KNbO3/CdS nanocomposites using visible light irradiation at wavelengths >400 nm in the presence of isopropanol. The inherent photocatalytic activity of bulk-phase CdS was enhanced by combining Q-sized CdS with KNbO3 and Ni deposited on KNbO3. Enhanced activity is most likely due to effective charge separation of...

Solar Photocatalytic Hydrogen Production from Water Using a Dual Bed Photosystem

We have been investigating the use of organic pigments as semiconductor photocatalysts in a dual stage water decomposition scheme that would ultimately use solar energy to generate hydrogen from water. We have shown that by employing a combination of simple screening procedures on prospective compounds, such as semiempirical molecular orbital calculations and thin film voltammetry, we can quick...