Stabilization of Neodymium Oxide Nanoparticles via Soft Adsorption of Charged Polymers

被引：21

作者：

Dorris, Annie ^{[1
]}

Sicard, Clemence ^{[1
]}

Chen, Mark C. ^{[2
]}

McDonald, Arthur B. ^{[2
]}

Barrett, Christopher J. ^{[1
]}

机构：

[1] McGill Univ, Dept Chem, Montreal, PQ, Canada

[2] Queens Univ, Dept Phys Engn Phys & Astron, Kingston, ON, Canada

来源：

ACS APPLIED MATERIALS & INTERFACES | 2011年 / 3卷 / 09期

基金：

加拿大自然科学与工程研究理事会;

关键词：

neodymium oxide; nanoparticles; poly(4-styrene sulfonate); polyelectrolyte stabilization; self-assembly of polyelectrolytes; rare-earth elements; neutrino detection materials; POLY(STYRENE SULFONATE) FILMS; RARE-EARTH-OXIDES; MULTILAYER FILMS; POLYELECTROLYTES; METAL; PRECURSORS; DEPOSITION; BEHAVIOR; EU(III); ND(III);

D O I：

10.1021/am200515q

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In this work, two synthetic polyelectrolytes, PSS and PAM, are employed as strong adsorbed surfactants to disperse and stabilize neodymium oxide nanoparticles. The acid-base equilibria of the oxide surfaces of the particles were investigated under different pH conditions in the absence and presence of polyelectrolytes, to optimize particle stabilization through enhancement of the effective repulsive surface charges. Surface charge amplification of a 3:5 ratio was achieved to permit improved particle transparency of 100-fold in visible wavelengths in neutral and acidic pH regimes, and a stable 10-fold surface charge amplification was achieved under basic pH conditions. The potential of polyelectrolytes as stabilizing agents for neodymium oxide NPs in large-scale particle physics experiments requiring extremely high optical transparency over long path length is evaluated based on optical absorbance and particle stability.

引用

页码：3357 / 3365

页数：9

共 35 条

[1] Direct evidence for neutrino flavor transformation from neutral-current interactions in the Sudbury Neutrino Observatory -: art. no. 011301 [J].