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不同水环境对纳米银颗粒聚集体粒径大小及界面电势的影响
引用本文:张红印,陈少峰,林庆宇.不同水环境对纳米银颗粒聚集体粒径大小及界面电势的影响[J].无机化学学报,2012,28(4):833-838.
作者姓名:张红印  陈少峰  林庆宇
作者单位:1. 罗德岛大学土木与环境工程系,金士顿02881,美国
2. 茂名职业技术学院化学工程系,茂名,525000
3. 贺州学院化学与生物工程系,贺州,542800
基金项目:广西省教育厅(No.2010101X536)资助项目
摘    要:研究了不同水环境对无稳定剂与PVP为稳定剂的纳米银颗粒的物化性能的影响。结果表明:随着电解质浓度的增加,纳米银颗粒的粒径与界面电势逐步增大;二价阳离子比一价阳离子更能有效地使纳米银粒径与界面电势增加;稳定剂PVP,腐植酸及其他天然有机物能够增加纳米银溶胶的稳定性;在天然水体中,纳米银在海水中的粒径颗粒与界面电势比湖水中更大。

关 键 词:纳米银  稳定剂  粒径  界面电势

Effect of Water Condition on Particle Size and ζ-Potential of Silver Nanoparticles
ZHANG Hong-Yin,CHEN Shao-Feng and LIN Qing-Yu.Effect of Water Condition on Particle Size and ζ-Potential of Silver Nanoparticles[J].Chinese Journal of Inorganic Chemistry,2012,28(4):833-838.
Authors:ZHANG Hong-Yin  CHEN Shao-Feng and LIN Qing-Yu
Institution:Department of Civil and Environmental Engineering, University of Rhode Island, Kingston, 02881, USA,Department of Chemical Engineering, Maoming Vocational Technical College, Maoming, Guangdong 525000, China and Department of Chemical and Biological Engineering, Hezhou University, Hezhou, Guangxi 542800, China
Abstract:This study evaluates the effect of water condition on the physicochemical properties of silver nanoparticles(AgNPs) with/without capping agent.The results show that the average particle size of AgNPs increases with increasing in electrolyte concentration.Divalent cation(Ca2+) can more effectively increase the size and ζ-potential of AgNP aggregates than monovalent cation(Na+).This study also indicates that PVP,humic acid or natural organic matters can increase the stability of AgNP suspension.Larger AgNPs aggregates are formed in seawater than in lake water.
Keywords:silver nanoparticles  capping agents  particle size  ζ-potential
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