TY - JOUR
T1 - Dye-sensitized semiconductor photoelectrochemical cells for overall water splitting
AU - Lee, Seung Hyun Anna
AU - Youngblood, W. Justin
AU - Blasdel, Landy K.
AU - Mallouk, Thomas E.
AU - Moore, Thomas A.
AU - Moore, Ana L.
AU - Gust, Devens
PY - 2010
Y1 - 2010
N2 - Photocatalytic water splitting has been one of the grand challenges of chemical research. Since the first discovery of photoassisted water electrolysis using ultraviolet light in 1972, there have been many reports on oxide photocatalysts. However, there has been little progress on molecule-oxide water splitting systems. These photosensitizers can act as visible light absorber and linker to couple photocatalytic nanoparticles and the semiconductor films to build an organic-inorganic hybrid photocatalytic water splitting system. We recently reported that IrO2nH2O (1-3 nm diameter) nanoparticles can be stabilized by Ru-tris(bipyridyl) complexes and studied their performance as oxygen evolving photocatalysts . These results inspired us to construct an overall water splitting dye-sensitized cell. The quantum efficiency of the system is quite low (0.8%) due to rapid back electron transfer from TiO2 to the oxidized sensitizer. We are currently exploring different buffers and investigating composite metal oxide films for a more efficient water splitting system.
AB - Photocatalytic water splitting has been one of the grand challenges of chemical research. Since the first discovery of photoassisted water electrolysis using ultraviolet light in 1972, there have been many reports on oxide photocatalysts. However, there has been little progress on molecule-oxide water splitting systems. These photosensitizers can act as visible light absorber and linker to couple photocatalytic nanoparticles and the semiconductor films to build an organic-inorganic hybrid photocatalytic water splitting system. We recently reported that IrO2nH2O (1-3 nm diameter) nanoparticles can be stabilized by Ru-tris(bipyridyl) complexes and studied their performance as oxygen evolving photocatalysts . These results inspired us to construct an overall water splitting dye-sensitized cell. The quantum efficiency of the system is quite low (0.8%) due to rapid back electron transfer from TiO2 to the oxidized sensitizer. We are currently exploring different buffers and investigating composite metal oxide films for a more efficient water splitting system.
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M3 - Conference article
AN - SCOPUS:79951534473
JO - ACS National Meeting Book of Abstracts
JF - ACS National Meeting Book of Abstracts
SN - 0065-7727
T2 - 239th ACS National Meeting and Exposition
Y2 - 21 March 2010 through 25 March 2010
ER -