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首页> 外文期刊>Japanese Journal of Applied Physics. Part 1, Regular Papers, Brief Communications & Review Papers >Improvement of Dispersibility of Nanosize Diamond by Sonochemical Reaction—Relationships among Acoustic Intensity, Disaggregation, and Surface Modification
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Improvement of Dispersibility of Nanosize Diamond by Sonochemical Reaction—Relationships among Acoustic Intensity, Disaggregation, and Surface Modification

机译：声化学反应改善纳米级金刚石的分散性-声强度，分解和表面改性之间的关系

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摘要

Aggregated nanosize diamond particles were disaggregated and had their surfaces modified by ultrasound exposure. A standing wave sound field was formed in a water tank using a Langevin-type transducer. Acoustic cavitation was generated in the water tank. Aggregated nanosize diamond particles with sizes of about 5 μm were disaggregated in particles with sizes of 40 nm by ultrasound exposure for 20 min. The magnitude of the zeta potential on nanosize diamond particles was increased by more than twice by ultrasound exposure. The sound field in the water tank was measured using a hydrophone. The average acoustic intensity was calculated from measured values of sound pressure. The zeta potential began to increase with increasing average acoustic intensity of more than 800 W/m~2.
机译：聚集的纳米级金刚石颗粒被分解，并通过超声暴露对其表面进行了改性。使用Langevin型换能器在水箱中形成驻波声场。在水箱中产生了声空化。通过超声暴露20分钟，将具有约5μm尺寸的聚集的纳米级金刚石颗粒分解为具有40nm尺寸的颗粒。通过超声暴露，纳米级金刚石颗粒上的ζ电势的大小增加了两倍以上。使用水听器测量水箱中的声场。根据声压的测量值计算平均声强。随着平均声强度增加到800 W / m〜2以上，ζ电位开始增加。

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