title: ortho-Dihydroxyl-9,10-anthraquinone dyes as visible-light sensitizers that exhibit a high turnover number for hydrogen evolution.
abstract: Pt/TiO2 sensitized by the cheap and organic ortho-dihydroxyl-9,10-anthraquinone dyes, such as Alizarin and Alizarin Red, achieved a TON of approximately 10 000 (TOF > 250 h(-1) for the first ten hours) during >80 hours of visible light irradiation (>420 nm) for photocatalytic hydrogen evolution when triethanolamine was used as the sacrificial donor. The stability and activity enhancements can be attributed to the two highly serviceable redox reactions involving the 9,10-dicarbonyl and ortho-dihydroxyl groups of the anthracene ring, respectively.
authors.affiliation: Key Laboratory of Photochemistry, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China. whma@iccas.ac.cn jczhao@iccas.ac.cn.
authors.forename: Qin
authors.initials: Q
authors.lastname: Li
authors.forename: Yanke
authors.initials: Y
authors.lastname: Che
authors.forename: Hongwei
authors.initials: H
authors.lastname: Ji
authors.forename: Chuncheng
authors.initials: C
authors.lastname: Chen
authors.forename: Huaiyong
authors.initials: H
authors.lastname: Zhu
authors.forename: Wanhong
authors.initials: W
authors.lastname: Ma
authors.forename: Jincai
authors.initials: J
authors.lastname: Zhao