Fabrication of CdTe nanoparticles-based superparticles for an improved detection of Cu2+ and Ag+

Jishu Han; Xue Zhang; Yubing Zhou; Yang Ning; Jie Wu; Sen Liang; Hongchen Sun; Hao Zhang; Bai Yang

doi:10.1039/C1JM14215A

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Fabrication of CdTe nanoparticles-based superparticles for an improved detection of Cu²⁺ and Ag⁺†

Jishu Han,^a Xue Zhang,^a Yubing Zhou,^a Yang Ning,^a Jie Wu,^a Sen Liang,^a Hongchen Sun,^b Hao Zhang*^a and Bai Yang^a

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* Corresponding authors

^a State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, P. R. China
E-mail: hao_zhang@jlu.edu.cn
Fax: (+86) 431-85193423
Tel: (+86) 431-85159205

^b School of Stomatology, Jilin University, Changchun, P. R. China

Abstract

Detection of highly toxic and bioaccumulative heavy metal ions using fluorescent semiconductor nanoparticles (NPs) has stimulated recent research interests, but the separation of NPs after detection has failed to be achieved. In this paper, fluorescent CdTe NPs-based superparticles (SPs) were fabricated using oil droplets in microemulsion as templates. By controlling the experimental variables, SPs with different fluorescence and composition were obtained. In particular, CdTe/Fe₃O₄ binary SPs simultaneously exhibited strong fluorescence and magnetism, thus achieving the separation of SPs. These CdTe-based SPs showed an improved detection of Cu²⁺ and Ag⁺.

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Article information

DOI: https://doi.org/10.1039/C1JM14215A
Article type: Paper
Submitted: 28 Aug 2011
Accepted: 10 Nov 2011
First published: 16 Dec 2011

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J. Mater. Chem., 2012,22, 2679-2686

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Fabrication of CdTe nanoparticles-based superparticles for an improved detection of Cu²⁺ and Ag⁺

J. Han, X. Zhang, Y. Zhou, Y. Ning, J. Wu, S. Liang, H. Sun, H. Zhang and B. Yang, J. Mater. Chem., 2012, 22, 2679 DOI: 10.1039/C1JM14215A

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Journal of Materials Chemistry