Development of a novel water-soluble magnetic fluorescent nanoparticle for the selective detection and removal of Cu2+.
Recently, much attention has been paid to the selective detection and removal of Cu2+ because an excess of Cu2+ can harm the environment and living systems. Herein, we developed a novel water-soluble di-2-picolylamine/proline co-modified Fe3O4@ZnS magnetic fluorescent nanoparticle (MFNP-Cu) for the selective detection and removal of Cu2+ through a dithiocarbamate linkage strategy. The characterization of MFNP-Cu was confirmed by x-ray diffraction (XRD), transmission electron microscope (TEM), magnetization hysteresis loops, infrared (IR) and emission spectra. The results showed that MFNP-Cu could quantifiably detect Cu2+ with high sensitivity and selectivity over a broad pH range (pH 4.1-9). The maximum adsorption capacity of MFNP-Cu was calculated to be about 517.9 mg g(-1), which is higher than previously reported. This excellent property was investigated by kinetics equilibrium and thermodynamic studies. Moreover, the removal properties of MFNP-Cu toward Cu2+ from contaminated water samples was achieved by an external magnetic field.
School of Resources and Environment, University of Jinan, Shandong Provincial Engineering Technology Research Center for Ecological Carbon Sink and Capture Utilization, Jinan 250022, People's Republic of China.
Baocun
B
Zhu
Peilun
P
Yang
Haiqin
H
Yu
Liangguo
L
Yan
Qin
Q
Wei
Bin
B
Du
D000327:Adsorption; D003300:Copper / Q000032:analysis*; D052203:Ferrosoferric Oxide / Q000737:chemistry; D005456:Fluorescent Dyes / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D007477:Ions; D007700:Kinetics; D060526:Magnetic Fields; D046529:Microscopy, Electron, Transmission; D053758:Nanoparticles / Q000737:chemistry*; D036103:Nanotechnology; D013055:Spectrophotometry, Infrared; D014867:Water / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000032:analysis; D018508:Water Purification / Q000295:instrumentation* / Q000379:methods; D014961:X-Ray Diffraction
D005456:Fluorescent Dyes; D007477:Ions; D014874:Water Pollutants, Chemical; D014867:Water; D003300:Copper; D052203:Ferrosoferric Oxide