Mesoporous concentric magnetic FePt core-shells nanoparticle with functionalized surfaces for capturing metal ions and DNA molecules

Tang, H. L., Qian, Y. Q., Ren, Y., Chen, H. Y., Jones, I. M. ORCID: https://orcid.org/0000-0002-7738-2516, Yue, B., He, H. Y. and Tsang, S. C. (2009) Mesoporous concentric magnetic FePt core-shells nanoparticle with functionalized surfaces for capturing metal ions and DNA molecules. Journal of Nanoscience and Nanotechnology, 9 (8). pp. 4604-4610. ISSN 1533-4880 doi: 10.1166/jnn.2009.1212

Abstract/Summary

It is demonstrated that monodisperse magnetic FePt nanoparticle can be engineered into a protective dense silica layer, followed by concentric outer mesoporous silica layers with tailored -SH, -SO3H and -NH2 surface groups, these new materials can be used to capture heavy metal ions and DNA molecules from solution specifically by their internal or/and external functionalised surfaces by magnetic means.