Open AccessRhodamine Derivative Functionalized Magnetic Nanoplatform for Cu2+ Sensing and Removal
Author(s) -
Jiaxin Wang,
Shuhan Wang,
Wanqing Tian,
Dongmei Yao,
Lining Sun,
Liyi Shi,
Jinliang Liu
Publication year - 2018
Publication title -
journal of nanomaterials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.463
H-Index - 66
eISSN - 1687-4129
pISSN - 1687-4110
DOI - 10.1155/2018/7049675
Subject(s) - materials science , detection limit , rhodamine b , rhodamine , copper , fluorescence , nanoparticle , ion , covalent bond , magnetic nanoparticles , composite number , nanotechnology , chemical engineering , catalysis , composite material , metallurgy , photocatalysis , chromatography , optics , chemistry , organic chemistry , physics , engineering
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.