書誌事項
- タイトル別名
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- Synthesis of Magnetite Nanoparticles under Standing Ultrasonication
- マグネタイトナノ リュウシ ノ ゴウセイ ニ オケル テイザイハガタ オンバ コウカ
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説明
Magnetite nanoparticles were synthesized by oxidizing a Fe(OH)2 precipitate in various ultrasonic (US) fields including traveling wave (TW; 20 kHz) driven by a horn-type homogenizer and standing waves (SW; 45, 100, 200 kHz) driven by a cleaner-type sonicator. Compared to a process with mechanical stirring (MS), each of US treatment completed the magnetite formation in much shorter time. The size of the nanoparticles decreased with the decreasing initial [Fe2+] concentration. Noticeably at [Fe2+]=0.001 mol/L, no more particles but brown amorphous sols were formed in either MS or TW process. To the contrary, black magnetite nanoparticles were formed in the SW process as usual as higher concentration. The SW ultrasonication enabled to gather cavitation bubbles in its nodes, and then it is inferred that high supersaturation enough to form nanoparticles were achieved locally in the nodes of the SW field.
収録刊行物
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- 粉体および粉末冶金
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粉体および粉末冶金 56 (4), 194-198, 2009
一般社団法人 粉体粉末冶金協会
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詳細情報 詳細情報について
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- CRID
- 1390282681284446080
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- NII論文ID
- 10025398460
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- NII書誌ID
- AN00222724
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- COI
- 1:CAS:528:DC%2BD1MXltVGgtbs%3D
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- ISSN
- 18809014
- 05328799
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- NDL書誌ID
- 10247688
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDLサーチ
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- 抄録ライセンスフラグ
- 使用不可