标题：Preparation of novel magnetic and fluorescent CS-Fe3O4@CdSeS nanoparticles for simultaneous removal and optical determination of trace copper ions作者：Xie, Chengli; Xiao, Ling; Peng, Shanzhi; Shi, Xiaowen

来源出版物：NEW JOURNAL OF CHEMISTRY 卷：38 期：12 页：6095-6102 DOI：10.1039/c4nj01235f 出版年：DEC 2014

摘要：Novel magnetic and fluorescent CS-Fe3O4@CdSeS nanoparticles (MF-CSNPs) were synthesized by incorporating Fe3O4-chitosan nanoparticles and mercaptopropionic acid capped alloyed CdSeS quantum dots into a chitosan matrix via an electrostatic interaction. The structure and properties of these novel MF-CSNPs were characterized by UV-visible, FL, XRD, ICP-AES, VSM and TEM. MF-CSNPs are found to adsorb copper ions with a high saturation adsorption capacity of 260 mg g(-1), above 95.0 wt% of the copper ions can be enriched and removed from aqueous systems in minutes by manipulating the MF-CSNPs with an external magnetic field. The fluorescence signals of the MF-CSNPs could be quenched effectively by the adsorbed copper ions. Linear relationships are established between the relative fluorescence intensity of the MF-CSNPs and the concentration of copper ions. The linear range and limit of detection for copper ions depend on the concentration of MF-CSNPs. The linear range varies in the concentration range of 0.21-80 mu g L-1 or 0.40-700 mu g L-1, with the lowest limit of detection of 0.022 mu g L-1 being calculated after enrichment. Trace copper ions in water can be simultaneously removed and determined using MF-CSNPs.

入藏号：WOS:000345485000055

文献类型：Article

语种：English

作者关键词：

扩展关键词：SEMICONDUCTOR QUANTUM DOTS; AQUEOUS-SOLUTIONS; FACILE METHOD; CDSE-CDS; ONE-STEP; CHITOSAN; NANOCOMPOSITES; METAL; NANOCRYSTALS; ROUTE

通讯作者地址：Xiao, Ling;Luojia Mt Wuchang, Wuhan 430072, Hubei Province, Peoples R China.

电子邮件地址：xiaoling9119@whu.edu.cn

地址：

[Xie, Chengli; Xiao, Ling; Peng, Shanzhi; Shi, Xiaowen] Wuhan Univ, Sch Resource & Environm Sci, Hubei Biomass Resource Chem & Environm Biotechnol, Wuhan 430072, Peoples R China.

研究方向：Chemistry

ISSN：1144-0546

eISSN:1369-9261