The synthesis and characterization of dinuclear ruthenium sensitizers and their applications in photocatalytic hydrogen production.
A dinuclear ruthenium(II) dye sensitizer, ([Ru(2)(bpy)(4)BL](ClO(4))(2)) referred as Compound 1, where bpy=2,2'-bipyridine, BL=2,2'-((1E,1'E)-(((E)-diazene-1,2-diyl-bis(2,1-phenylene))-bis(azanylylidene))-bis (methanylylidene)) diphenol (a bidentate bridging ligand), was designed, synthesized and characterized. The dye sensitizer was used on the photocatalytic water splitting for hydrogen (H(2)) production over TiO(2) (P25) under visible light (λ≥400 nm) irradiation using triethanolamine (TEOA) as a sacrificial electron donor. The dye sensitized-TiO(2) demonstrated a good stability and sufficient reproducibility for over 6 h. The photosensitization ability of the sensitizer was due to its conjugation system, large molecular area, TiO(2) linkage mode and the antenna effect.
College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China.
Uahengo
U
Veikko
Xiaohu
X
Zhang
Tianyou
T
Peng
Ping
P
Cai
Gongzhen
G
Cheng
D015082:2,2'-Dipyridyl / Q000031:analogs & derivatives* / Q000138:chemical synthesis / Q000737:chemistry; D002384:Catalysis; D004396:Coloring Agents / Q000138:chemical synthesis / Q000737:chemistry*; D006859:Hydrogen / Q000737:chemistry*; D008027:Light; D009942:Organometallic Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D010782:Photolysis; D017319:Photosensitizing Agents / Q000138:chemical synthesis / Q000737:chemistry; D014025:Titanium / Q000737:chemistry; D014867:Water / Q000737:chemistry*
D004396:Coloring Agents; D009942:Organometallic Compounds; D017319:Photosensitizing Agents; C103599:bis(bipyridyl)ruthenium(II); D014867:Water; C009495:titanium dioxide; D015082:2,2'-Dipyridyl; D006859:Hydrogen; D014025:Titanium