Hydrothermal synthesis of Co3O4 nanosheets and its application in photoelectrochemical water splitting

In this study, Co 3 O 4 nanosheets were synthesized through hydrothermal method using cobalt nitrate hexahydrate. X-ray diffraction, diffuse reflectance spectra, Fourier transform infrared spectroscopy, energy-dispersive X-ray spectroscopy, and field emission scanning electron microscopy were applie...

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Bibliographic Details
Published in:Chemical engineering communications 2017-10, Vol.204 (10), p.1105-1112
Main Authors: Bazrafshan, Hamed, Shajareh Touba, Razieh, Alipour Tesieh, Zahra, Dabirnia, Saeideh, Nasernejad, Bahram
Format: Article
Language:English
Subjects:
Cobalt oxides
Electrolysis
Emission analysis
Field emission microscopy
Fourier transforms
Infrared spectra
nanosheet
Nanosheets
photoelectrochemical
Reflectance
Scanning electron microscopy
Spectral emissivity
Spectrum analysis
Synthesis
Water splitting
X-ray spectroscopy
X-rays
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Summary:In this study, Co 3 O 4 nanosheets were synthesized through hydrothermal method using cobalt nitrate hexahydrate. X-ray diffraction, diffuse reflectance spectra, Fourier transform infrared spectroscopy, energy-dispersive X-ray spectroscopy, and field emission scanning electron microscopy were applied to investigate the properties of as-synthesized samples. Ultimately, the electrochemical and photoelectrochemical properties were evaluated by Mott-Schottky analysis and measuring photoconversion efficiency of Co 3 O 4 nanosheets. The results indicated that Co 3 O 4 nanosheets exhibited a maximum efficiency of 0.92% for water electrolysis under simulated 1.5 global sunlight air mass, which further suggests the excellent potential of Co 3 O 4 nanosheets for application in hydrogen generation through photocatalytic water splitting.
ISSN:0098-6445
1563-5201
DOI:10.1080/00986445.2017.1344651