Heterojunction Fe2O3-SnO2 nanostructured photoanode for efficient photoelectrochemical water splitting

Hyun Soo Han, Sun Shin, Jun Hong Noh, In Sun Cho, Kug Sun Hong

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Hierarchically organized nanostructures were fabricated by growing SnO 2 nanoparticles on a fluorine-doped tin oxide/glass substrate via a laser ablation method. Cauliflower-like clusters consisting of agglomerated nanoparticles were deposited and aligned with respect to the substrate with a large internal surface area and open channels of pores. The morphological changes of SnO2 nanostructured films were investigated as a function of the oxygen working pressure in the range of 100-500 mTorr. A nanostructured scaffold prepared at an oxygen working pressure of 100 mTorr exhibited the best photoelectrochemical (PEC) performance. A Ti:Fe2O3- SnO2 nanostructured photoanode showed the photocurrent that was 34% larger than that of a Ti:Fe2O3 flat photoanode when the amount of Ti:Fe2O3 sensitizer was identical for the two photoanodes. The larger surface area and longer electron lifetime of the Ti:Fe2O3-SnO2 nanostructured photoanode explains its improved PEC performance.

Original languageEnglish
Pages (from-to)664-669
Number of pages6
JournalJOM
Volume66
Issue number4
DOIs
Publication statusPublished - 2014 Jan 1
Externally publishedYes

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Heterojunctions
Oxygen
Nanoparticles
Fluorine
Water
Laser ablation
Substrates
Tin oxides
Photocurrents
Scaffolds
Nanostructures
Glass
Electrons
stannic oxide

ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)

Cite this

Heterojunction Fe2O3-SnO2 nanostructured photoanode for efficient photoelectrochemical water splitting. / Han, Hyun Soo; Shin, Sun; Noh, Jun Hong; Cho, In Sun; Hong, Kug Sun.

In: JOM, Vol. 66, No. 4, 01.01.2014, p. 664-669.

Research output: Contribution to journalArticle

Han, Hyun Soo ; Shin, Sun ; Noh, Jun Hong ; Cho, In Sun ; Hong, Kug Sun. / Heterojunction Fe2O3-SnO2 nanostructured photoanode for efficient photoelectrochemical water splitting. In: JOM. 2014 ; Vol. 66, No. 4. pp. 664-669.
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