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Author Agarwal, Rashmi A. ♦ Gupta, Neeraj K.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY ♦ ELECTRON SPIN RESONANCE ♦ HYDROCHLORIC ACID ♦ INFRARED SPECTRA ♦ NANOPARTICLES ♦ NITRIC ACID ♦ NITROGEN DIOXIDE ♦ POLYMERIZATION ♦ POLYMERS ♦ POROUS MATERIALS ♦ PRECURSOR ♦ REDUCING AGENTS ♦ SILVER ♦ SYNTHESIS ♦ TEMPERATURE RANGE 0273-0400 K ♦ TRANSMISSION ELECTRON MICROSCOPY
Abstract A simple synthesis for the integration of different nanoparticles (NPs) including Ag, Au, Pd, Cr and mixed (Cu/Fe), has been demonstrated within the nanopores of a non-activated one dimensional porous coordination polymer (PCP) of Cd(II) due to its high flexible structure. There are two different mechanisms (acid formation (HCl/HNO{sub 3}) and redox activity of the framework) elucidated by electron paramagnetic resonance (EPR). Presence of –NO{sub 2} groups of the ligand act as anchoring sites for metal ions of metal precursors leading to NPs growth within the PCP explained by FTIR. High resolution transmission electron microscopy (HRTEM) images provided insight of the chemical and physical characteristics of the NPs within the framework. Ag/AgO NPs exhibit excellent antibacterial properties at extremely low concentrations. The polymer shows potential for sequestration and reduction of hexavalent Cr (highly toxic) to elemental, trivalent and tetravalent Cr (non toxic). This framework is also an excellent template for fabrication and dry storage of nanoparticles synthesized by mixed metal precursors. Ferromagnetic properties have been shown by Ag and Au NPs integrated frameworks while Cu/Fe@Cd-PCP behaves as a paramagnet material at room temperature. - Graphical abstract: Different types of nanoparticles have been synthesized by utilizing a 1D porous coordination polymer of Cd(II) in its as-synthesized state at RT and without use of any reducing agent. Display Omitted - Highlights: • A number of NPs have been synthesized in a 1D PCP without reducing agent. • –NO2 groups act as anchoring sites for the metal ions of metal precursors. • Ag/AgO NPs show excellent antibacterial properties at very low concentrations. • PCP shows potential for sequestration and reduction of Cr(VI) to Cr(0, III and IV).
ISSN 00224596
Educational Use Research
Learning Resource Type Article
Publisher Date 2017-11-15
Publisher Place United States
Journal Journal of Solid State Chemistry
Volume Number 255


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