Nanostructured materials for photocatalytic hydrogen production
Artikel i vetenskaplig tidskrift, 2009

Photocatalytic hydrogen (H-2) production represents a very promising but challenging contribution to a clean, sustainable and renewable energy system. The photocatalyst material plays a key role in photocatalytic H-2 production, and it has proven difficult to obtain corrosion resistant, chemically stable, visible light harvesting and highly efficient photocatalysts, which have their band edges matching the O-2 and H-2 production levels. Nanoscience and nanotechnology are opening a new vista in the development of highly active, nanostructured photocatalysts with large surface areas for optimized light absorption, minimized distances (or times) for charge-carrier transport, and further favorable properties. Our focus here is on recently developed nanostructured photocatalysts. In particular. the particle size, chemical composition (including dopants), microstructure, crystal phase. morphology, surface modification, bandgap and flat-band potential of the nanophotocatalysts have shown a visible effect on photocatalytic H-2 production rates, which may be further increased by adding sensitizers, cocatalysts or scavengers. Finally, potential directions required to push this research field a step further are highlighted. (

H-2

titanium-oxide

shuttle redox mediator

Nanostructured materials

activity tio2

Nanomaterials

h-2 evolution

z-scheme

Photocaralysis

surfactant template

TiO2

calcium niobate

Light harvesting

sol-gel process

Water splitting

aqueous-methanol solution

Hydrogen

Semiconductor

Solar light

Visible light

Photocatalyst

visible-light irradiation

Författare

Jiefang Zhu

Chalmers, Teknisk fysik, Kemisk fysik

Michael Zäch

Chalmers

Current Opinion in Colloid and Interface Science

1359-0294 (ISSN)

Vol. 14 4 260-269

Ämneskategorier

Fysikalisk kemi

DOI

10.1016/j.cocis.2009.05.003