期刊
JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 404, 期 -, 页码 161-168出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2013.05.010
关键词
Zinc oxide nanoparticles; Phospholipid monolayers; Rapid cyclic voltammetry; Particle size; Particle aggregation
资金
- EU [NMP-229244]
- UK Royal Society
- Nuffield Foundation Bursary
- NERC [NE/K00686X/1, NE/F011830/1, NE/K001396/1] Funding Source: UKRI
- Natural Environment Research Council [NE/F011830/1, NE/K00686X/1, NE/K001396/1, ceh010010] Funding Source: researchfish
Aqueous ZnO nanoparticle dispersions interaction with a dioleoyl phosphatidylcholine (DOPC) monolayer is reported in this paper. ZnO-DOPC interactions were investigated using rapid cyclic voltammetry (RCV) by focusing on the effect of the interactions on the characteristics of the capacitance current peaks representing two potential induced phase transitions. Results showed: - (1) The order of interaction of common commercially sourced nanoparticles with DOPC coated Hg electrodes was NanoTek > NanoShield > metals basis. This extent of interaction was inversely related to the ZnO particle size where the metals basis nanoparticles were strongly aggregated. The contribution of the non-ionic dispersant added by manufacturer to the NanoTek and NanoShield interaction was uncertain. (2) Freshly prepared aqueous Nanosun ZnO nanoparticle (similar to 25 nm) dispersions interacted with and penetrated DOPC coated Hg electrodes. Aggregation of the nanoparticles, coating of the ZnO with phosphate and coating of the ZnO with fulvic acid minimised ZnO-DOPC interaction. (3) In-house synthesised ZnO nanoparticles of lower primary particle size (similar to 6 nm) than Nanosun ZnO nanoparticles interacted strongly with DOPC coated Hg electrodes with no evidence of penetration of the nanoparticle in the DOPC monolayer. Even after considerable aggregation of the particle to between 1 and 10 mu m, a strong interaction of the in-house synthesised ZnO with DOPC was observed. (C) 2013 Elsevier Inc. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据