Abstract
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.
| Original language | English |
|---|---|
| Title of host publication | ACS National Meeting Book of Abstracts |
| Publication status | Published - 2010 |
| Event | 239th ACS National Meeting and Exposition - San Francisco, CA, United States Duration: Mar 21 2010 → Mar 25 2010 |
Other
| Other | 239th ACS National Meeting and Exposition |
|---|---|
| Country | United States |
| City | San Francisco, CA |
| Period | 3/21/10 → 3/25/10 |
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ASJC Scopus subject areas
- Chemistry(all)
- Chemical Engineering(all)
Cite this
Dye-sensitized semiconductor photoelectrochemical cells for overall water splitting. / Lee, Seung Hyun Anna; Youngblood, W. Justin; Blasdel, Landy K.; Mallouk, Thomas E.; Moore, Thomas A; Moore, Ana L; Gust, John Devens.
ACS National Meeting Book of Abstracts. 2010.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
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, John 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 contribution
BT - ACS National Meeting Book of Abstracts
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