...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>AIChE Journal >Aggregation of silica nanoparticles in an aqueous suspension
【24h】

Aggregation of silica nanoparticles in an aqueous suspension

机译：二氧化硅纳米粒子在水悬浮液中的聚集

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Aggregation affects the stability of the nanoparticles in fluids. For hydrophilic particles in aqueous suspensions, zeta potential becomes a common measure to control the stability of the particles. However, it is not clear how zeta potential impacts on the interaction of the particles during their close range contact when the hydration repulsion arises strongly. This article demonstrates a method that uses the kinetic theory of aggregation for an aggregation system of changing zeta potential to determine the hydration repulsion and the aggregation efficiency. It was found that the hydration repulsion has an equivalent electrical potential of 30 mV on the stem surface of the particles and an exponential decay length of 2.77 angstrom. This hydration potential is equivalent to 12 mV zeta potential and contributes 29% to the aggregation coefficient that is 5.5 x 10(-6) for a 30 mV zeta potential stabilized silica particle suspension. (c) 2015 American Institute of Chemical Engineers AIChE J, 61: 2136-2146, 2015
机译：聚集影响流体中纳米颗粒的稳定性。对于水性悬浮液中的亲水性颗粒，ζ电位已成为控制颗粒稳定性的常用措施。然而，当水合排斥强烈出现时，尚不清楚ζ电势如何影响粒子在近距离接触期间的相互作用。本文演示了一种方法，该方法将聚集动力学理论用于改变zeta电位的聚集系统中，以确定水合斥力和聚集效率。发现水合排斥在颗粒的茎表面上具有30mV的等效电势，并且具有2.77埃的指数衰减长度。该水合电位等于12 mV的zeta电位，并且对于30 mV的zeta电位稳定的二氧化硅颗粒悬浮液，其聚集系数为5.5 x 10（-6）的29％。 （c）2015年美国化学工程师学会AIChE J，61：2136-2146，2015

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号