In:
Journal of Nanomaterials, Hindawi Limited, Vol. 2018 ( 2018-06-10), p. 1-8
Abstract:
Pollution caused by copper is one of the key factors of environment contamination. As one of the heavy metals, copper is hard to decompose in nature; the biological enrichment of which may lead to severe damage to health. Cu 2+ detection, thus, possesses a bright application prospect both in environment protection and in human health. In this paper, a dual-functional fluorescence-magnetic composite nanoplatform has been designed to sensitively detect, meanwhile, capture, and remove Cu 2+ in the solution of water and ethanol (1 : 1, v / v ). The core-shell structure nanoparticle synthesized by using Fe 3 O 4 as core and SiO 2 as shell is covalently bonded with rhodamine derivatives on the silica layer to construct the nanoplatform. The emission is increased upon the addition of Cu 2+ , showing fluorescence turn on effect for the detection, and the limit of detection is as low as 1.68 nM. Meanwhile, Cu 2+ ions are captured by the coordination with rhodamine derivatives and can be removed with the help of magnetic field.
Type of Medium:
Online Resource
ISSN:
1687-4110
,
1687-4129
DOI:
10.1155/2018/7049675
Language:
English
Publisher:
Hindawi Limited
Publication Date:
2018
detail.hit.zdb_id:
2229480-6
