Recovery of gold nanoparticles using pH-sensitive microgels

被引：11

作者：

Lazim, Azwan Mat ^{[1
]}

Eastoe, Julian ^{[1
]}

Bradley, Melanie ^{[1
]}

Trickett, Kieran ^{[1
]}

Mohamed, Azmi ^{[1
]}

Rogers, Sarah E. ^{[2
]}

机构：

[1] Univ Bristol, Sch Chem, Bristol BS8 1TS, Avon, England

[2] Rutherford Appleton Lab, ISIS, CCLRC, Chilton OX11 0QX, Oxon, England

来源：

SOFT MATTER | 2010年 / 6卷 / 09期

基金：

英国工程与自然科学研究理事会;

关键词：

N-ISOPROPYLACRYLAMIDE; SOLVENT-EXTRACTION; POLY(N-ISOPROPYLACRYLAMIDE); HETEROAGGREGATION; STABILITY; VOLUME;

D O I：

10.1039/c002511a

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A simple method to disperse and recover gold nanoparticles (AuNPs) based on pH-induced heteroaggregation of mixed positive/negative aqueous microgels (MGs) is described. Interestingly, stability of these composite inorganic-organic systems can be readily and reversibly controlled by using pH, affording flocculated (pH 3) or re-dispersed (pH 10) Au-NPs as desired. Atomic absorption spectroscopy shows that an efficient and effective recovery of the AuNPs can be achieved. These systems provide novel triggerable and recyclable alternatives to classical recovery methods.

引用

页码：2050 / 2055

页数：6

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