Publication:
Hierarchical Fe3O4-reduced graphene oxide nanocomposite grown on NaCl crystals for triiodide reduction in dye-sensitized solar cells

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Issued Date

2019

Resource Type

Article

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application/pdf

ISSN

20452322

DOI

10.1038/s41598-018-38050-z

Other identifier(s)

2-s2.0-85061143406

Rights Holder(s)

Scopus

Bibliographic Citation

Scientific Reports. Vol 9, No.1 (2019)

Suggested Citation

Harnchana V., Chaiyachad S., Pimanpang S., Saiyasombat C., Srepusharawoot P., Amornkitbamrung V. Hierarchical Fe3O4-reduced graphene oxide nanocomposite grown on NaCl crystals for triiodide reduction in dye-sensitized solar cells. Scientific Reports. Vol 9, No.1 (2019). doi:10.1038/s41598-018-38050-z Retrieved from: https://hdl.handle.net/20.500.14740/5076

Title

Hierarchical Fe3O4-reduced graphene oxide nanocomposite grown on NaCl crystals for triiodide reduction in dye-sensitized solar cells

Author(s)

Harnchana V.
 Chaiyachad S.
 Pimanpang S.
 Saiyasombat C.
 Srepusharawoot P.
 Amornkitbamrung V.

Abstract

Cost-effective reduced graphene oxide sheets decorated with magnetite (Fe3O4) nanoparticles (Fe3O4-rGO) are successfully fabricated via a chemical vapor deposition (CVD) technique using iron (III) nitrate as an iron precursor, with glucose and CH4 as carbon sources, and NaCl as a supporting material. TEM analysis and Raman spectroscopy reveal hierarchical nanostructures of reduced graphene oxide (rGO) decorated with Fe3O4 nanoparticles. Fe K-edge x-ray absorption near edge structure (XANES) spectra confirm that the nanoparticles are Fe3O4 with a slight shift of the pre-edge peak position toward higher energy suggesting that the fabricated Fe3O4 nanoparticles have a higher average oxidation state than that of a standard Fe3O4 compound. The hierarchical Fe3O4-rGO is found to exhibit an excellent catalytic activity toward the reduction of triiodide to iodide in a dye-sensitized solar cell (DSSC) and can deliver a solar cell efficiency of 6.65%, which is superior to a Pt-based DSSC (6.37%). © 2019, The Author(s).

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https://hdl.handle.net/20.500.14740/5076

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Scopus: Year 1983-2021

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