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Sonolytic Oxidation of Tc(IV)O2nH2O Nanoparticles to Tc(VII)O4 in Aqueous Solution

Atom Indonesia · Vol. 36 No. 1 (2010) · hlm. 17–22

DOI
10.17146/aij.2010.7
ISSN
2356-5322, 0126-1568
Terbit
2010-12-16
Penerbit
National Research and Innovation Agency
Bahasa
eng
Lisensi
creativecommons.org/licenses/by-nc-sa/4.0

Abstrak

Sonolysis of a hydrosol of TcO2nH2O was investigated in the Ar- or He- atmosphere. Colloidal TcO2nH2O nanoparticles were irradiated with a 200 kHz and 1.25 W/cm2 ultrasound. It was found that the TcO2nH2O colloids dispersed in an aqueous solution (under Ar or He atmosphere) was completely dissolved by ultrasonic irradiation (200 kHz, 200 W). The original brownish black color of the suspension slowly disappeared leaving behind a colorless solution. This change suggests that oxidation of Tc(IV) to Tc(VII) takes place. The oxidation was almost complete during 30 minutes sonication time under argon atmosphere for initial concentration of 6.0E-5 M. Addition of t-butyl alcohol, an effective radical scavenger which readily reacts with OH radicals, supressed the dissolution of TcO2nH2O colloids. This reaction indicates that TcO2nH2O molecules are oxidized by OH radicals produced in cavitation bubbles. Received: 20 November 2009; Revised:14 April 2010; Accepted: 18 April 2010

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  • Hasanuddin University
  • Universitas Bumi Hijrah Tidore
  • National Research and Innovation Agency
  • Tohoku University
  • State University of Makassar
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Rekan penulisOrganisasiArtikel bersama
Prastawa BudiHasanuddin University2
Hasnah NatsirHasanuddin University2
Rugaiyah A. ArfahHasanuddin University2
Paulina TabaHasanuddin University2
Nunuk Hariani SoekamtoHasanuddin University2
La KoloUniversitas Bumi Hijrah Tidore2
Djabal Nur BasirHasanuddin University2
Yusafir HalaHasanuddin University2
St Fauziah St FauziahAfiliasi tidak diketahui1
Abdur Rahman ArifHasanuddin University1
Andi RusnaenahAfiliasi tidak diketahui1
Firdaus FirdausNational Research and Innovation Agency1
La Yusran La KalamuUniversitas Bumi Hijrah Tidore1
St. FauziahHasanuddin University1
Maming MamingHasanuddin University1
Nurharis MunandarHasanuddin University1
Syaharuddin KasimHasanuddin University1
Indah RayaHasanuddin University1
Abd. KarimHasanuddin University1
MamingHasanuddin University1
Eka Anggriani OdjaHasanuddin University1
Emma SuryatiNational Research and Innovation Agency1
Karuniawati AzisState University of Makassar1

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Sumber metadata: OAI-PMH (metadata jurnal) https://atomindonesia.brin.go.id/index.php/aij/oai, pertama di-harvest 8 Nov 2026, terakhir terlihat 8 Nov 2026.
Metadata asli (oai_dc) 
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	<dc:title xml:lang="en-US">Sonolytic Oxidation of Tc(IV)O2nH2O Nanoparticles to Tc(VII)O4 in Aqueous Solution</dc:title>
	<dc:creator>Zakir, M.</dc:creator>
	<dc:creator>Sekine, T.</dc:creator>
	<dc:subject xml:lang="en-US">Tc-nanoparticles; Sonolytic oxidation; Tc(IV), Tc(VII)</dc:subject>
	<dc:description xml:lang="en-US">Sonolysis of a hydrosol of TcO2nH2O was investigated in the Ar- or He- atmosphere. Colloidal TcO2nH2O nanoparticles were irradiated with a 200 kHz and 1.25 W/cm2 ultrasound. It was found that the TcO2nH2O colloids dispersed in an aqueous solution (under Ar or He atmosphere) was completely dissolved by ultrasonic irradiation (200 kHz, 200 W). The original brownish black color of the suspension slowly disappeared leaving behind a colorless solution. This change suggests that oxidation of Tc(IV) to Tc(VII) takes place. The oxidation was almost complete during 30 minutes sonication time under argon atmosphere for initial concentration of 6.0E-5 M. Addition of t-butyl alcohol, an effective radical scavenger which readily reacts with OH radicals, supressed the dissolution of TcO2nH2O colloids. This reaction indicates that TcO2nH2O molecules are oxidized by OH radicals produced in cavitation bubbles. Received: 20 November 2009; Revised:14 April 2010; Accepted: 18 April 2010</dc:description>
	<dc:publisher xml:lang="en-US">National Research and Innovation Agency</dc:publisher>
	<dc:contributor xml:lang="en-US">National Nuclear Energy Agency of Indonesia</dc:contributor>
	<dc:date>2010-12-16</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
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	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://atomindonesia.brin.go.id/index.php/aij/article/view/7</dc:identifier>
	<dc:identifier>10.17146/aij.2010.7</dc:identifier>
	<dc:source xml:lang="en-US">Atom Indonesia; Vol 36, No 1 (2010): April 2010; 17-22</dc:source>
	<dc:source>2356-5322</dc:source>
	<dc:source>0126-1568</dc:source>
	<dc:source>10.17146/aij.2010.%x</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://atomindonesia.brin.go.id/index.php/aij/article/view/7/3</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2016 Atom Indonesia</dc:rights>
	<dc:rights xml:lang="en-US">http://creativecommons.org/licenses/by-nc-sa/4.0</dc:rights>
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