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Synthesis of self-assembled nanorod vanadium oxide bundles by sonochemical treatment

Self-assembled nanorod of vanadiumoxide bundles were synthesized by treating bulk V2O5 with high intensity sonochemical technique. The synthesized materials were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM) and temperature-progr...

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Main Authors: Yap, Taufiq Yun Hin, Wong, Yee Ching, Zainal, Zulkarnain, Hussein, Mohd Zobir
Format: Article
Language:English
Published: Elsevier 2009
Online Access:http://psasir.upm.edu.my/id/eprint/16950/1/Synthesis%20of%20self-assembled%20nanorod%20vanadium%20oxide%20bundles%20by%20sonochemical%20treatment.pdf
http://psasir.upm.edu.my/id/eprint/16950/
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spelling my.upm.eprints.169502016-11-24T09:27:45Z http://psasir.upm.edu.my/id/eprint/16950/ Synthesis of self-assembled nanorod vanadium oxide bundles by sonochemical treatment Yap, Taufiq Yun Hin Wong, Yee Ching Zainal, Zulkarnain Hussein, Mohd Zobir Self-assembled nanorod of vanadiumoxide bundles were synthesized by treating bulk V2O5 with high intensity sonochemical technique. The synthesized materials were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM) and temperature-programmed reduction (TPR) in H2. Catalytic behaviour of the materials over anaerobic n-butane oxidation was studied through temperature-programmed reaction (TPRn). Catalytic evaluation of the sonochemical treated V2O5 products was also studied on microreactor. XRD patterns of all the vanadium samples were perfectly indexed to V2O5. The morphologies of the nanorodvanadiumoxides as shown in SEM and TEM depended on the duration of the ultrasound irradiation. Prolonging the ultrasound irradiation duration resulted in materials with uniform, well defined shapes and surface structures and smaller size of nanorodvanadiumoxidebundles. H2-TPR profiles showed that larger amount of oxygen species were removed from the nanorod V2O5 compared to the bulk. Furthermore, the nanorod vanadium oxide bundles, which were produced after 90, 120 and 180 min of sonochemical treatment, showed an additional reduction peak at lower temperature (∼850 K), suggesting the presence of some highly active oxygen species. TPRn in n-butane/He over these materials showed that the nanorod V2O5 with highly active oxygen species showed markedly higher activity than the bulk material, which was further proven by catalytic oxidation of n-butane. Elsevier 2009 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/16950/1/Synthesis%20of%20self-assembled%20nanorod%20vanadium%20oxide%20bundles%20by%20sonochemical%20treatment.pdf Yap, Taufiq Yun Hin and Wong, Yee Ching and Zainal, Zulkarnain and Hussein, Mohd Zobir (2009) Synthesis of self-assembled nanorod vanadium oxide bundles by sonochemical treatment. Journal of Natural Gas Chemistry, 18 (3). pp. 312-318. ISSN 1003-9953 10.1016/S1003-9953(08)60124-3
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 Self-assembled nanorod of vanadiumoxide bundles were synthesized by treating bulk V2O5 with high intensity sonochemical technique. The synthesized materials were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM) and temperature-programmed reduction (TPR) in H2. Catalytic behaviour of the materials over anaerobic n-butane oxidation was studied through temperature-programmed reaction (TPRn). Catalytic evaluation of the sonochemical treated V2O5 products was also studied on microreactor. XRD patterns of all the vanadium samples were perfectly indexed to V2O5. The morphologies of the nanorodvanadiumoxides as shown in SEM and TEM depended on the duration of the ultrasound irradiation. Prolonging the ultrasound irradiation duration resulted in materials with uniform, well defined shapes and surface structures and smaller size of nanorodvanadiumoxidebundles. H2-TPR profiles showed that larger amount of oxygen species were removed from the nanorod V2O5 compared to the bulk. Furthermore, the nanorod vanadium oxide bundles, which were produced after 90, 120 and 180 min of sonochemical treatment, showed an additional reduction peak at lower temperature (∼850 K), suggesting the presence of some highly active oxygen species. TPRn in n-butane/He over these materials showed that the nanorod V2O5 with highly active oxygen species showed markedly higher activity than the bulk material, which was further proven by catalytic oxidation of n-butane.
format Article
author Yap, Taufiq Yun Hin
Wong, Yee Ching
Zainal, Zulkarnain
Hussein, Mohd Zobir
spellingShingle Yap, Taufiq Yun Hin
Wong, Yee Ching
Zainal, Zulkarnain
Hussein, Mohd Zobir
Synthesis of self-assembled nanorod vanadium oxide bundles by sonochemical treatment
author_facet Yap, Taufiq Yun Hin
Wong, Yee Ching
Zainal, Zulkarnain
Hussein, Mohd Zobir
author_sort Yap, Taufiq Yun Hin
title Synthesis of self-assembled nanorod vanadium oxide bundles by sonochemical treatment
title_short Synthesis of self-assembled nanorod vanadium oxide bundles by sonochemical treatment
title_full Synthesis of self-assembled nanorod vanadium oxide bundles by sonochemical treatment
title_fullStr Synthesis of self-assembled nanorod vanadium oxide bundles by sonochemical treatment
title_full_unstemmed Synthesis of self-assembled nanorod vanadium oxide bundles by sonochemical treatment
title_sort synthesis of self-assembled nanorod vanadium oxide bundles by sonochemical treatment
publisher Elsevier
publishDate 2009
url http://psasir.upm.edu.my/id/eprint/16950/1/Synthesis%20of%20self-assembled%20nanorod%20vanadium%20oxide%20bundles%20by%20sonochemical%20treatment.pdf
http://psasir.upm.edu.my/id/eprint/16950/
_version_ 1643826367818629120
score 13.211869

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