| 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(英文) |
| Effect of Water Condition on Particle Size and ζ-Potential of Silver Nanoparticles |
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| 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 |
| 基金项目: |
| 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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| 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(英文)[J].无机化学学报,2012,28(4):833-838. |
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