Abstract
Surface modifications are often made to titania films to improve its photocatalytic performance in watersplitting. We herein introduced electron beam irradiation to enhance the photocatalytic activities of anelectro-sprayed titania film for solar water splitting application. The film was fabricated by a facile andscalable electrostatic spraying deposition. According to SEM, X-ray diffraction, and Raman data, electronbeam densified the film and improved its crystallinity. Absorbance data indicated that the band gap ofthe E-beam film reduced, which in turn covered the wider range of absorbed light. These modificationsincreased oxygen vacancies or defects, which enhanced mobility and separation of electrons and holes.As a result, the E-beam film exhibited a threefold increase in the photocurrent density, compared to thatof the non-E-beam film. This electrosprayed titania film was used as a photoanode while the referenceand counter electrodes involved in the generation of hydrogen were made of Ag/AgCl and platinum,respectively. The intensity of the UV light illumination used was 1 mW/cm2.
| Original language | English |
|---|---|
| Pages (from-to) | 205-210 |
| Number of pages | 6 |
| Journal | Applied Surface Science |
| Volume | 319 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2014 |
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Keywords
- Electron beam
- Electrostatic spray deposition
- Thin film
- TiO
- Water splitting
ASJC Scopus subject areas
- Surfaces, Coatings and Films
Cite this
Enhanced solar water splitting of electron beam irradiated titaniaphotoanode by electrostatic spray deposition. / Mali, Mukund G.; Yoon, Hyun; An, Seongpil; Choi, Jae Young; Kim, Ha Yong; Lee, Byung Cheol; Kim, Byung Nam; Park, Ji Hyun; Al-Deyab, Salem S.; Yoon, Suk Goo.
In: Applied Surface Science, Vol. 319, No. 1, 2014, p. 205-210.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Enhanced solar water splitting of electron beam irradiated titaniaphotoanode by electrostatic spray deposition
AU - Mali, Mukund G.
AU - Yoon, Hyun
AU - An, Seongpil
AU - Choi, Jae Young
AU - Kim, Ha Yong
AU - Lee, Byung Cheol
AU - Kim, Byung Nam
AU - Park, Ji Hyun
AU - Al-Deyab, Salem S.
AU - Yoon, Suk Goo
PY - 2014
Y1 - 2014
N2 - Surface modifications are often made to titania films to improve its photocatalytic performance in watersplitting. We herein introduced electron beam irradiation to enhance the photocatalytic activities of anelectro-sprayed titania film for solar water splitting application. The film was fabricated by a facile andscalable electrostatic spraying deposition. According to SEM, X-ray diffraction, and Raman data, electronbeam densified the film and improved its crystallinity. Absorbance data indicated that the band gap ofthe E-beam film reduced, which in turn covered the wider range of absorbed light. These modificationsincreased oxygen vacancies or defects, which enhanced mobility and separation of electrons and holes.As a result, the E-beam film exhibited a threefold increase in the photocurrent density, compared to thatof the non-E-beam film. This electrosprayed titania film was used as a photoanode while the referenceand counter electrodes involved in the generation of hydrogen were made of Ag/AgCl and platinum,respectively. The intensity of the UV light illumination used was 1 mW/cm2.
AB - Surface modifications are often made to titania films to improve its photocatalytic performance in watersplitting. We herein introduced electron beam irradiation to enhance the photocatalytic activities of anelectro-sprayed titania film for solar water splitting application. The film was fabricated by a facile andscalable electrostatic spraying deposition. According to SEM, X-ray diffraction, and Raman data, electronbeam densified the film and improved its crystallinity. Absorbance data indicated that the band gap ofthe E-beam film reduced, which in turn covered the wider range of absorbed light. These modificationsincreased oxygen vacancies or defects, which enhanced mobility and separation of electrons and holes.As a result, the E-beam film exhibited a threefold increase in the photocurrent density, compared to thatof the non-E-beam film. This electrosprayed titania film was used as a photoanode while the referenceand counter electrodes involved in the generation of hydrogen were made of Ag/AgCl and platinum,respectively. The intensity of the UV light illumination used was 1 mW/cm2.
KW - Electron beam
KW - Electrostatic spray deposition
KW - Thin film
KW - TiO
KW - Water splitting
UR - http://www.scopus.com/inward/record.url?scp=84922920081&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84922920081&partnerID=8YFLogxK
U2 - 10.1016/j.apsusc.2014.06.097
DO - 10.1016/j.apsusc.2014.06.097
M3 - Article
VL - 319
SP - 205
EP - 210
JO - Applied Surface Science
JF - Applied Surface Science
SN - 0169-4332
IS - 1
ER -