Optical and Electrochemical Properties of Co3O4/SiO2 Nanocomposite

Co3O4/SiO2 nanocomposite was obtained via citrate-gel method. 22 nm in size Co3O4 particles in an amorphous SiO2 matrix were obtained. Co3O4:SiO2 wt. ratio was verified using EDX and found to be close to the 80 % nominal ratio. The UV-Vis measurements showed broad absorption bands at around 440 and...

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Main Authors:	Ali, Gomaa A. M., Fouad, Osama A., S. A., Makhlouf, M. M., Yusoff, K. F., Chong
Format:	Article
Language:	English
Published:	Trans Tech Publications, Switzerland 2016
Subjects:	QD Chemistry
Online Access:	http://umpir.ump.edu.my/id/eprint/4769/ http://umpir.ump.edu.my/id/eprint/4769/ http://umpir.ump.edu.my/id/eprint/4769/ http://umpir.ump.edu.my/id/eprint/4769/1/fist-2016-gomaa-Optical%20and%20Electrochemical%20Properties%20.pdf

id	ump-4769
recordtype	eprints
spelling	ump-47692018-07-26T03:26:37Z http://umpir.ump.edu.my/id/eprint/4769/ Optical and Electrochemical Properties of Co3O4/SiO2 Nanocomposite Ali, Gomaa A. M. Fouad, Osama A. S. A., Makhlouf M. M., Yusoff K. F., Chong QD Chemistry Co3O4/SiO2 nanocomposite was obtained via citrate-gel method. 22 nm in size Co3O4 particles in an amorphous SiO2 matrix were obtained. Co3O4:SiO2 wt. ratio was verified using EDX and found to be close to the 80 % nominal ratio. The UV-Vis measurements showed broad absorption bands at around 440 and 790 nm. The optical band gap values were 1.95 and 1.35 eV respectively, being close to those observed for pure Co3O4 nanoparticles. The electrochemical measurements in 5 M KOH solution were performed using a three-electrode type system. Co3O4/SiO2 nanocomposite exhibited high specific capacitance reaching 758 F g-1 at 2.5 mV s-1. Very small solution and electrode-electrolyte interfacial charge transfer resistances were obtained when impedance spectra were analysed. Trans Tech Publications, Switzerland 2016 Article PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/4769/1/fist-2016-gomaa-Optical%20and%20Electrochemical%20Properties%20.pdf Ali, Gomaa A. M. and Fouad, Osama A. and S. A., Makhlouf and M. M., Yusoff and K. F., Chong (2016) Optical and Electrochemical Properties of Co3O4/SiO2 Nanocomposite. Advanced Materials Research, 1133. pp. 447-451. ISSN 1022-6680 (print), 1662-8985 (online) http://www.scientific.net/AMR.1133.447 DOI: 10.4028/www.scientific.net/AMR.1133.447
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	QD Chemistry
spellingShingle	QD Chemistry Ali, Gomaa A. M. Fouad, Osama A. S. A., Makhlouf M. M., Yusoff K. F., Chong Optical and Electrochemical Properties of Co3O4/SiO2 Nanocomposite
description	Co3O4/SiO2 nanocomposite was obtained via citrate-gel method. 22 nm in size Co3O4 particles in an amorphous SiO2 matrix were obtained. Co3O4:SiO2 wt. ratio was verified using EDX and found to be close to the 80 % nominal ratio. The UV-Vis measurements showed broad absorption bands at around 440 and 790 nm. The optical band gap values were 1.95 and 1.35 eV respectively, being close to those observed for pure Co3O4 nanoparticles. The electrochemical measurements in 5 M KOH solution were performed using a three-electrode type system. Co3O4/SiO2 nanocomposite exhibited high specific capacitance reaching 758 F g-1 at 2.5 mV s-1. Very small solution and electrode-electrolyte interfacial charge transfer resistances were obtained when impedance spectra were analysed.
format	Article
author	Ali, Gomaa A. M. Fouad, Osama A. S. A., Makhlouf M. M., Yusoff K. F., Chong
author_facet	Ali, Gomaa A. M. Fouad, Osama A. S. A., Makhlouf M. M., Yusoff K. F., Chong
author_sort	Ali, Gomaa A. M.
title	Optical and Electrochemical Properties of Co3O4/SiO2 Nanocomposite
title_short	Optical and Electrochemical Properties of Co3O4/SiO2 Nanocomposite
title_full	Optical and Electrochemical Properties of Co3O4/SiO2 Nanocomposite
title_fullStr	Optical and Electrochemical Properties of Co3O4/SiO2 Nanocomposite
title_full_unstemmed	Optical and Electrochemical Properties of Co3O4/SiO2 Nanocomposite
title_sort	optical and electrochemical properties of co3o4/sio2 nanocomposite
publisher	Trans Tech Publications, Switzerland
publishDate	2016
url	http://umpir.ump.edu.my/id/eprint/4769/ http://umpir.ump.edu.my/id/eprint/4769/ http://umpir.ump.edu.my/id/eprint/4769/ http://umpir.ump.edu.my/id/eprint/4769/1/fist-2016-gomaa-Optical%20and%20Electrochemical%20Properties%20.pdf
first_indexed	2023-09-18T21:59:40Z
last_indexed	2023-09-18T21:59:40Z
_version_	1777414314113630208

Optical and Electrochemical Properties of Co3O4/SiO2 Nanocomposite

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