NDLI: A pH responsive nanogel composed of magnetite, silica and poly(4-vinylpyridine) for extraction of Cd(II), Cu(II), Ni(II) and Pb(II)

Content Provider	Springer Nature Link
Author	Behbahani, Mohammad Bide, Yasamin Bagheri, Saman Salarian, Mani Omidi, Fariborz Nabid, Mohammad Reza
Copyright Year	2015
Abstract	A pH responsive nanogel composed of magnetite (Fe3O4), silica and poly(4-vinylpyridine) was designed and utilized as an adsorbent for the simultaneous separation of ultra-trace amounts of cadmium, lead, copper and nickel ions. This solid phase extraction system was characterized by Fourier transform infrared spectrometry, transmission electron microscopy and X-ray diffraction analysis. The sorbent can be separated from the sample solution by applying an external magnetic field, and the analytes eluted with 1 M hydrochloric acid. The extracted ions were quantified by flame atomic absorption spectrophotometry. Effects of pH value, adsorption and desorption time, type, concentration and volume of the eluent, breakthrough volume, and effect of potentially interfering ions were studied. Under optimized conditions, the extraction efficiency is >98 %, the limits of detection are 0.03, 0.2, 0.6 and 0.9 ng mL−1 for Cd(II), Cu(II), Ni(II) and Pb(II), respectively, and the adsorption capacities for these ions are 52, 61, 75 and 65 mg g−1. The sorbent has a high affinity for the above target ions. Eventually, the pH responsive system was used for rapid, efficient, fairly selective and highly sensitive extraction of these ions from various water samples. Graphical Abstract We describe a magnetite-silica-poly(4-vinylpyridine) nanogel that is pH-responsive and can act as a sorbent for the extraction of Cd(II), Cu(II), Ni(II) and Pb(II).
Starting Page	111
Ending Page	121
Page Count	11
File Format	PDF
ISSN	00263672
Journal	Microchimica Acta
Volume Number	183
Issue Number	1
e-ISSN	14365073
Language	English
Publisher	Springer Vienna
Publisher Date	2015-08-15
Publisher Place	Vienna
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Magnetite Poly-4-vinylpyridine Poly-4-vinylpyrrolidone Core-shell pH-responsive nanogel Heavy metals ions Water analysis Nanochemistry Nanotechnology Characterization and Evaluation of Materials Analytical Chemistry Microengineering
Content Type	Text
Resource Type	Article
Subject	Analytical Chemistry

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