Titania-based photocatalysts—crystal growth, doping and heterostructuring

N-Doped TIO2 Shuttle Redox Mediator Inorganic green chemistry 1600 Chemistry 01 natural sciences 7. Clean energy Visible-light Irradiation 620 0104 chemical sciences Engineering Dominant 001 Facets Chemical sciences Mesoporous Tio2 Z-scheme Sensitized Solar-cells Electrochemistry Electronic Band-structure Hydrogen-production Water-splitting System 2505 Materials Chemistry
DOI: 10.1039/b909930a Publication Date: 2009-09-18T14:54:12Z
ABSTRACT
Semiconductor photocatalysts have important applications in renewable energy and environment fields. To overcome the serious drawbacks of low efficiency and narrow light-response range in most stable semiconductor photocatalysts, many strategies have been developed in the past decades. This review attempts to provide a comprehensive update and examination of some fundamental issues in titania (TiO2)-based semiconductor photocatalysts, such as crystal growth, doping and heterostructuring. We focus especially on recent progress in exploring new strategies to design TiO2-based photocatalysts with unique structures and properties, elucidating the chemical states and distribution of dopants in doped TiO2, designing and fabricating integrated heterostructure photocatalysts with different charge-carrier transfer pathways, and finally identifying the key factors in determining the photocatalytic efficiency of titania-based photocatalysts.
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