Preparation of poly(N-vinyl-2-pyrrolidone)-stabilized transition metal (Fe, Co, Ni and Cu) hexacyanoferrate nanoparticles

Abstract

Water-soluble Prussian-blue (PB) analogue transition metal hexacyanoferrate (HCF) nanoparticles FeHCF, CoHCF, NiHCF and CuHCF have been synthesized by using poly(N-vinyl-2-pyrrolidone) as a protective matrix. Transmission electron microscopy (TEM) images of the synthesized PB analogues showed stable and well dispersed nanoparticles with fairly narrow size distributions. Depending on transition metal ions, the PB analogue nanoparticles exhibited various novel shapes but with similar average sizes within the range of 45-60 nm. Spherical NiHCF, cubic CoHCF and CuHCF, and frustum-of-pyramid-like FeHCF nanoparticles, have been characterized from the TEM images. X-ray diffraction (XRD) analysis further identified a face-centred cubic structure of the nanoparticles. The FTIR and UV-vis spectroscopy were employed to investigate the optical properties of the nanoparticle-PVP composites, showing distinguished optical and electronic transitions from conventionally synthesized nanoparticles. The effect of feed ratio of PVP to transition metal ions on the size and optical properties of the nanoparticles was also discussed.

Selective Electroanalysis of Ascorbic Acid Using a Nickel Hexacyanoferrate and Poly(3,4‐ethylenedioxythiophene) Hybrid Film Modified Electrode

“…The four peaks that appear at around 23.78 (2q) correspond to the (220) crystallographic plane, the peak at around 32.18 (2q) corresponds to the (400) plane, the peak at around 37.28 (2q) corresponds to the (420) plane, and the peak at around 43.48 (2q) corresponds to the (422) plane (JCPDS 5-0036, 5-0037) [39,40].…”

Simple synthesis of three primary colour nanoparticle inks of Prussian blue and its analogues

“…Recently, it has been understood that the so-called 'insoluble PB', Fe 4 [Fe(CN) 6 ] 3 •xH 2 O, is a bulk solid, and nanoscience has also presented a new field related to the syntheses of PB and PBA nanoparticles during the last seven years [16][17][18]. In fact, reversed micelle [19][20][21][22][23][24][25][26][27][28], polymer-protection [29][30][31][32][33][34], and template [35][36][37] syntheses effectively inhibit the crystal growth of PB and PBAs.…”

Fabrication and electrochemical study of monodisperse and size controlled Prussian blue nanoparticles protected by biocompatible polymer

“…Since these nanomaterials often exhibit new interesting size-dependent physical and chemical properties that cannot be achieved by their bulk counterparts and have found applications in various fields, the synthesis of nanoparticles with different chemical composition, size distribution, and controlled monodispersity has become an important area of research in nanotechnology. Furthermore, stimulated by recent advances in bio-technology, nanoparticles functionalized with biomolecules and bioorganisms are becoming a new frontier bridging chemistry, physics, biology and material science [4][5][6].…”