Analysis of high temperature and pressure cavitation bubbles during ultrasound irradiation and its application to reaction control

超声辐照高温高压空化气泡分析及其在反应控制中的应用

• 批准号: 22560760
• 负责人: OKITSU Kenji
• 金额: $ 2.41万
• 依托单位: Osaka Prefecture University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22560760/
• 关键词: ソノケミストリー; 還元反応; パラジウム; 金; グラフェン; 還元; 超音波; キャビテーション; 速度論

The effects of ultrasound irradiation conditions on the bubble temperatures attained were investigated in an aqueous solution. The bubble temperatures during ultrasound cavitation tended to decrease with increasing amount of decomposition products and vapor of the used alcohols. In addition, the reaction of nitrogen oxidation was suggested to be one of the important probes to monitor the bubble temperatures and pressures during ultrasound cavitation. The syntheses of palladium nanoparticles, gold nanoparticles and graphene by using ultrasound irradiation methods were performed, where the reduction rates of metal ions and size and shape of the formed nanomaterials were able to be controlled by various reaction conditions.

在水溶液中研究了超声波照射条件对所达到的气泡温度的影响。随着分解产物和所用醇的蒸气量的增加，超声空化期间的气泡温度趋于降低。此外，氮氧化反应被认为是监测超声空化过程中气泡温度和压力的重要探针之一。利用超声辐照方法合成了钯纳米粒子、金纳米粒子和石墨烯，其中金属离子的还原率以及形成的纳米材料的尺寸和形状能够通过不同的反应条件来控制。

项目成果

Sonochemical synthesis of Pd nanoparticles in the presence of CTAB and NaBr

CTAB 和 NaBr 存在下声化学合成 Pd 纳米颗粒

• 发表时间: 2011
• 作者: Satoko Doi;Kenji Okitsu;Rokuro Nishimura
• 通讯作者: Rokuro Nishimura