A5 2.4MHz超音波のソノフォトシナジーに関する基礎的研究
書誌事項
- タイトル別名
-
- A5 Fundamental Investigation on Sono-Photo Synergy with 2.4 MHz Ultrasound
- 公開日
- 2012
- DOI
-
- 10.20577/pamjss.21.0_9
- 公開者
- 日本ソノケミストリー学会
説明
Combined or synergetic effect of titania photocatalysis and ultrasonication has been studied in recent. Most typical system for the combination is composed of the titania particles suspended in aqueous medium and 20-200 kHz ultrasound of general use. In this work, we employed fibrous titania prepared by a sol-gel coating on a metal fiber and high frequency ultrasound driven at 2.4 MHz and investigated the sono-photo synergetic effect using KI iodometry. It was found that the continuous bubbling through the sonication is quite effective in enhancing the KI index only at 2.4 MHz. One supporting data for this is that the degassing from water during the 2.4 MHz sonication was much more that that of the 200 kHz's or still standing. In addition, availability of the MHz sonication was conspicuous in the Ar/O_2 mixture. It can be inferred that oxygen-related active species whose lifetime are short for 200 kHz but is long for 2.4 MHz play an important role in the system. In the presence of titania fiber, the synergy index was found to be high compared to the other process. However, a large volume of the fiber in the solution may inhibit the propagation of ultrasound so far.
収録刊行物
-
- ソノケミストリー討論会講演論文集
-
ソノケミストリー討論会講演論文集 21 (0), 9-10, 2012
日本ソノケミストリー学会
- Tweet
詳細情報 詳細情報について
-
- CRID
- 1390282681028734336
-
- NII論文ID
- 110009710712
-
- ISSN
- 24241512
-
- 本文言語コード
- ja
-
- データソース種別
-
- JaLC
- CiNii Articles
-
- 抄録ライセンスフラグ
- 使用不可