Cover Image

Room temperature radiolytic synthesized Cu@CuAlO2-Al2O3 nanoparticles

Colloidal Cu@CuAlO2-Al2O3 bimetallic nanoparticles were prepared by a gamma irradiation method in an aqueous system in the presence of polyvinyl pyrrolidone (PVP) and isopropanol respectively as a colloidal stabilizer and scavenger of hydrogen and hydroxyl radicals. The gamma irradiation was carried...

Full description

Saved in:
Bibliographic Details
Main Authors: Abedini, Alam, Saion, Elias, Larki, Farhad, Zakaria, Azmi, Noroozi, Monir, Soltani, Nayereh
Format: Article
Language:English
Published: MDPI AG 2012
Online Access:http://psasir.upm.edu.my/id/eprint/52277/1/52277.pdf
http://psasir.upm.edu.my/id/eprint/52277/
http://www.mdpi.com/1422-0067/13/9/11941
Tags: Add Tag
No Tags, Be the first to tag this record!
id my.upm.eprints.52277
record_format eprints
spelling my.upm.eprints.522772017-06-05T05:38:46Z http://psasir.upm.edu.my/id/eprint/52277/ Room temperature radiolytic synthesized Cu@CuAlO2-Al2O3 nanoparticles Abedini, Alam Saion, Elias Larki, Farhad Zakaria, Azmi Noroozi, Monir Soltani, Nayereh Colloidal Cu@CuAlO2-Al2O3 bimetallic nanoparticles were prepared by a gamma irradiation method in an aqueous system in the presence of polyvinyl pyrrolidone (PVP) and isopropanol respectively as a colloidal stabilizer and scavenger of hydrogen and hydroxyl radicals. The gamma irradiation was carried out in a 60Co gamma source chamber with different doses up to 120 kGy. The formation of Cu@CuAlO2-Al2O3 nanoparticles was observed initially by the change in color of the colloidal samples from colorless to brown. Fourier transform infrared spectroscopy (FTIR) confirmed the presence of bonds between polymer chains and the metal surface at all radiation doses. Results of transmission electron microscopy (TEM), energy dispersive X-ray spectrometry (EDX), and X-ray diffraction (XRD) showed that Cu@CuAlO2-Al2O3 nanoparticles are in a core-shell structure. By controlling the absorbed dose and precursor concentration, nanoclusters with different particle sizes were obtained. The average particle diameter increased with increased precursor concentration and decreased with increased dose. This is due to the competition between nucleation, growth, and aggregation processes in the formation of nanoclusters during irradiation. MDPI AG 2012 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/52277/1/52277.pdf Abedini, Alam and Saion, Elias and Larki, Farhad and Zakaria, Azmi and Noroozi, Monir and Soltani, Nayereh (2012) Room temperature radiolytic synthesized Cu@CuAlO2-Al2O3 nanoparticles. International Journal of Molecular Sciences, 13 (9). pp. 11941-11953. ISSN 1422-0067 http://www.mdpi.com/1422-0067/13/9/11941 10.3390/ijms130911941
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description Colloidal Cu@CuAlO2-Al2O3 bimetallic nanoparticles were prepared by a gamma irradiation method in an aqueous system in the presence of polyvinyl pyrrolidone (PVP) and isopropanol respectively as a colloidal stabilizer and scavenger of hydrogen and hydroxyl radicals. The gamma irradiation was carried out in a 60Co gamma source chamber with different doses up to 120 kGy. The formation of Cu@CuAlO2-Al2O3 nanoparticles was observed initially by the change in color of the colloidal samples from colorless to brown. Fourier transform infrared spectroscopy (FTIR) confirmed the presence of bonds between polymer chains and the metal surface at all radiation doses. Results of transmission electron microscopy (TEM), energy dispersive X-ray spectrometry (EDX), and X-ray diffraction (XRD) showed that Cu@CuAlO2-Al2O3 nanoparticles are in a core-shell structure. By controlling the absorbed dose and precursor concentration, nanoclusters with different particle sizes were obtained. The average particle diameter increased with increased precursor concentration and decreased with increased dose. This is due to the competition between nucleation, growth, and aggregation processes in the formation of nanoclusters during irradiation.
format Article
author Abedini, Alam
Saion, Elias
Larki, Farhad
Zakaria, Azmi
Noroozi, Monir
Soltani, Nayereh
spellingShingle Abedini, Alam
Saion, Elias
Larki, Farhad
Zakaria, Azmi
Noroozi, Monir
Soltani, Nayereh
Room temperature radiolytic synthesized Cu@CuAlO2-Al2O3 nanoparticles
author_facet Abedini, Alam
Saion, Elias
Larki, Farhad
Zakaria, Azmi
Noroozi, Monir
Soltani, Nayereh
author_sort Abedini, Alam
title Room temperature radiolytic synthesized Cu@CuAlO2-Al2O3 nanoparticles
title_short Room temperature radiolytic synthesized Cu@CuAlO2-Al2O3 nanoparticles
title_full Room temperature radiolytic synthesized Cu@CuAlO2-Al2O3 nanoparticles
title_fullStr Room temperature radiolytic synthesized Cu@CuAlO2-Al2O3 nanoparticles
title_full_unstemmed Room temperature radiolytic synthesized Cu@CuAlO2-Al2O3 nanoparticles
title_sort room temperature radiolytic synthesized cu@cualo2-al2o3 nanoparticles
publisher MDPI AG
publishDate 2012
url http://psasir.upm.edu.my/id/eprint/52277/1/52277.pdf
http://psasir.upm.edu.my/id/eprint/52277/
http://www.mdpi.com/1422-0067/13/9/11941
_version_ 1643835201227325440
score 13.211869

Similar Items