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Photocatalytic H 2 Production from Water by Metal‐free Dye‐sensitized TiO 2 Semiconductors: The Role and Development Process of Organic Sensitizers
Author(s) -
Huang JianFeng,
Lei Yang,
Luo Teng,
Liu JunMin
Publication year - 2020
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.202001646
Subject(s) - photocatalysis , molar absorptivity , artificial photosynthesis , water splitting , nanotechnology , materials science , semiconductor , solar energy , hydrogen production , hydrogen , photochemistry , chemistry , catalysis , organic chemistry , optoelectronics , ecology , physics , optics , biology
The utilization of solar energy to produce hydrogen from water is showing increased importance and desirability in the field of artificial photosynthesis to produce clean and sustainable fuels. In a typical three‐component dye‐sensitized semiconductor system for photocatalysis, the dye sensitizer plays an essential role of energy antenna for harvesting visible light and promoting the reduction reaction to generate hydrogen. In recent decades, a lot of attention has focused on metal‐free organic sensitizers, which have the advantages of low cost, high molar extinction coefficient, good modifiability and, most importantly, ability to avoid the use of noble metal ions. This Review enumerates the design strategies, specific properties and photocatalytic performances of metal‐free sensitizers in the past 30 years and concludes their evolution process. The advantages of different types of metal‐free sensitizers are highlighted and the instructively enlightening experiences are systematic summarized.