摘要:
Disclosed is a water-splitting photocatalyst, and methods for its use, that includes a photoactive semi-conductive layer, an up-converting material capable of converting infrared (IR) light to visible light and/or ultraviolet (UV) light, and a metal or metal alloy material having surface plasmon resonance properties in response to IR light and/or visible light, wherein the photoactive semi-conductive layer encompasses at least a portion of the up- converting material and the metal or metal alloy material.
摘要:
Photocatalysts and methods of using the same for producing hydrogen and oxygen from water are disclosed. The photocatalysts include a photoactive layer having a thickness of 10 nanometers (nm) to 1000 nm and a plasmonic metal layer having a thickness of 2 nm to 20 nm and having surface plasmon resonance properties in response to ultra-violet and/or visible light, wherein the plasmonic metal layer is positioned proximal to the photoactive layer.
摘要:
A photocatalyst and a method for producing hydrogen and oxygen from water by photocatalytic electrolysis are disclosed. The photocatalyst includes a photoactive material and metal or metal alloy material (15) - e.g. pure particles or alloys of Au, Pd and Ag - capable of having plasmon resonance properties deposited on the surface of the photoactive material. The photoactive material includes a p-n junction (17) formed by contact of a n-type semiconductor material (10), such as mixed phase TiO2 nanoparticles (anatase to rutile ratio of 1.5 to 1 or greater), and a p-type semiconductor material (16), such as CoO or Cu2O.
摘要:
Photocatalysts and methods of using photocatalysts for producing hydrogen from water are disclosed. The photocatalysts comprise photoactive titanium dioxide particles having an anatase to rutile ratio of greater than or equal to 2:1 and silver, palladium, and gold metal material deposited on the surface of the photoactive titanium dioxide particles. The molar ratio of gold to palladium is from 0.1 to 5 and the molar ratio of gold to silver is from 0.1 to 3.
摘要:
Photocatalysts and methods of using the same for producing hydrogen and oxygen from water are disclosed. The photocatalysts include photoactive titanium dioxide loaded with 0.5 wt.% to 4 wt.% of a hole-scavenging material comprising cobalt oxide and 0.1 wt.% to 1 wt.% of palladium (Pd) and/or a Pd-Co alloy.
摘要:
A photocatalyst, and methods for its use, that includes a photoactive material comprising a photonic band gap and an electronic band gap, wherein the photonic band gap at least partially overlaps with the electronic band gap (such as titania inverse opal); and an electrically conductive material such as silver,gold, palladium, platinum, ruthenium, rhenium, rhodium, osmium or iridium, deposited on the photoactive material in the form of nanoparticles.