Highly dispersed noble-metal/chromia (core/shell) nanoparticles as efficient hydrogen evolution promoters for photocatalytic overall water splitting under visible light

Abstract

Highly dispersed rhodium nanoparticles (1.7 +/- 0.3 nm) prepared by a liquid-phase reduction method were loaded on a solid solution of GaN and ZnO without forming aggregates, achieving improved activity for visible-light-driven overall water splitting when the nanoparticles are coated with a chromia shell.

Photocatalytic Overall Water Splitting Promoted by Two Different Cocatalysts for Hydrogen and Oxygen Evolution under Visible Light

“…The relatively low activity of the present system can be attributed to the method of cocatalyst modification; specifically, the present photodeposition method causes aggregation of Rh cores. [13] In conclusion, we demonstrated for the first time the validity of modifying a photocatalyst with two different cocatalysts for H 2 and O 2 evolution to improve water-splitting activity under visible light.…”

Functioning devices for solar to fuel conversion

“…Solar panels for heating and production of electricity as such do not store energy, although batteries and chemical flow batteries are available and being improved. Two other major routes suggest themselves, for storing the collected photonic energy in the form of chemicals: -H 2 production by water splitting [11][12][13][14][15][16] -CO 2 reduction, combined with water oxidation (to O 2 ), yielding liquids such as alcohols or even hydrocarbons. This process is commonly referred to as artificial photosynthesis [17][18][19][20][21][22][23].…”

Toward the Creation of Functionalized Metal Nanoclusters and Highly Active Photocatalytic Materials Using Thiolate-Protected Magic Gold Clusters

“…When nanoparticles synthesized in the liquid-phase are adsorbed onto the photocatalyst followed by the removal of their ligands, monodispersed nanoparticles of a few nanometers in size can be loaded onto the photocatalyst. 136,137 Au n (SR) m clusters can be synthesized with diameters of ca. 1 nm and precision at the atomic level.…”

“…The microminiaturization of cocatalyst particles has been reported to improve photocatalytic activity. 136,137 Although cocatalysts are often loaded by techniques such as photodeposition or impregnation, 130135 the strict control of particle size during growth on the photocatalysts is difficult using these methods; therefore, loading monodisperse nanoparticles of a few nanometers in diameter is difficult. When nanoparticles synthesized in the liquid-phase are adsorbed onto the photocatalyst followed by the removal of their ligands, monodispersed nanoparticles of a few nanometers in size can be loaded onto the photocatalyst.…”