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NAOSITE : Nagasaki University's Academic Output SITE > Faculty of Engineering > Bulletin > Reports of the Faculty of Engineering, Nagasaki University > Volume 40, No. 74 >


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Title: 超音波による酸化鉄ナノ粒子の生成及び酸化メカニズムの解明
Other Titles: Preparation and oxidation mechanism of iron oxide nanoparticle by use of ultrasonic sonochemial oxidation
Authors: 中越, 修 / 首藤, 達也 / 田辺, 秀二
Authors (alternative): Nakagoe, Osamu / Shuto, Tatsuya / Tanabe, Shuji
Issue Date: Jan-2010
Publisher: 長崎大学工学部
Citation: 長崎大学工学部研究報告, Vol.40(74), pp.31-36 ; 2009
Abstract: Fe3O4 nanoparticles were prepared by ultrasonic sonochemical oxidation and the oxidation mechanism of its formation was investigated. Sonochemical oxidation of Fe2+ ion was carried out by reverse precipitation method (RPM) with and without surfactants under Air, Ar, N2 and O2 gas replacement in the solutions. The order of oxidative reactivity is Air > O2 > N2 ~ Ar. In order to reveal the mechanism of oxidation, we measured oxidants such as OH-, NO2- and NO3- under presence of various gases in the solutions after ultrasound irradiation. As the results, coexistence of N2 and O2 in the solution enhanced sonochemical oxidation since NO2- and NO3- formation took place in addition to OH- as sonochemical oxidant.
Keywords: iron oxide / nanoparticle / sonochemical oxidation / reaction mechanism
URI: http://hdl.handle.net/10069/22707
Relational Links: http://www.lb.nagasaki-u.ac.jp/reports/kougaku/preview.php?id=91
Type: Departmental Bulletin Paper
Text Version: publisher
Appears in Collections:Volume 40, No. 74

Citable URI : http://hdl.handle.net/10069/22707

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