Synthesis of surfactant encapsulated nickel hexacyanoferrate nanoparticles and deposition of their Langmuir–Blodgett film

Bagkar, Nitin; Ganguly, R.; Choudhury, Sipra; Hassan, P. A.; Sawant, Shilpa N.; Yakhmi, J. V.

doi:10.1039/b315866g

Cited by 57 publications

(42 citation statements)

References 45 publications

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“…Among other methods, electrochemical deposition [26], chemical deposition [27] and the self-assembling method [23] have been used for PB decoration on electrodes. Agents, such as anionic surfactant sodium bis (2-ethylhexyl) sulfosuccinate [28], sodium hexametaphosphate [29], apoferritin [30], stearylamine [31] or nafion [32] are used to stabilize PB nanoparticles on electrode surfaces [33]. However, some of these binders may result in poor electrical conductivity of the electrode.…”

Section: Introductionmentioning

confidence: 99%

Electrocatalytic properties of prussian blue nanoparticles supported on poly(m-aminobenzenesulphonic acid)-functionalised single-walled carbon nanotubes towards the detection of dopamine

Adekunle

Farah

Pillay

et al. 2012

Colloids and Surfaces B: Biointerfaces

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Edged plane pyrolytic graphite electrode (EPPGE) was modified with and without Prussian blue (PB) nanoparticles and polyaminobenzene sulphonated single-walled carbon nanotubes (SWCNTPABS) using the chemical deposition method. The electrodes were characterised using microscopy, spectroscopy and electrochemical techniques. Results showed that edged plane pyrolytic graphite-single-walled carbon nanotubes-prussian blue (EPPGE-SWCNT-PB) electrode gave the best dopamine (DA) current response which increases with increasing PB layers. The catalytic rate constant of 1.69 x 10 5 mol -1 cm 3 s -1 , Tafel value of 112 mVdec -1 , and limit of detection of DA (2.8 nM) were obtained. Dopamine could be simultaneously detected with ascorbic acid. The electrode was found to be electrochemically stable, reusable and can be used for the analysis of DA in real drug samples.Keywords: Prussian blue nanoparticles; Dopamine; Electrochemical impedance spectroscopy; Interferences; Ascorbic acid IntroductionCarbon nanotubes (CNTs) are excellent electrical conducting nanowires with unique properties such as high tensile strength, electrical conductivity, chemical stability and flexibility. They are essential and promising materials in the field of nano-science and nanotechnology because of their electronic properties and large surface area [1][2][3]. Their contribution to the improvement of electrical properties of some bare electrode such as the glassy carbon [4][5][6], graphite [7][8][9][10], carbon fiber [11], gold [12][13][14][15], and platinum (Pt) electrodes [16] have been reported. As part of its numerous applications, Han et al. [17] considered CNTs as suitable mediators for prussian blue (PB)-modified electrodes because of their good electrical conductivity and the property of being particle carriers.Prussian blue (PB) is a polynuclear and mixed-valent iron cyanide complex with a repeating unit of potassium ferrous ferricyanide hexacyano hexahydrate (Fe 4 (III) [Fe(II) (CN) 6 ] 3 ) . Prussian blue has unique properties in its structural arrangement which allows compositional variation by combining with several transition metal ions in different oxidation states such as Co 2+ , and Co 3+ , and Ni 2+ [18]. This metal substitution and variation leads to a combination of properties that are not readily found in other inorganic materials [19]. Its unique properties, synthetic versatility and the ability of the cyanide ligands to bridge other ions have been explored in its application in electrochromic devices [20] Equipment and ProcedureThe edge plane pyrolytic graphite electrode plate (3 mm diameter) was purchased from Le Carbone, Sussex, UK and was constructed locally at the University of Pretoria technical workshop. The plate was placed in a teflon tube, extended outside with a copper wire to make electrical contact with the electrochemical equipment. The energy dispersive X-ray spectra were Ag|AgCl in sat. KCl). An Ag|AgCl in saturated KCl and platinum wire were used as reference and counter electrodes, respectively...

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Section: Introductionmentioning

confidence: 99%

Electrocatalytic properties of prussian blue nanoparticles supported on poly(m-aminobenzenesulphonic acid)-functionalised single-walled carbon nanotubes towards the detection of dopamine

Adekunle

Farah

Pillay

et al. 2012

Colloids and Surfaces B: Biointerfaces

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“…Conductivity (S/cm) Polyaniline 2.00 ⁄ 10 À06 PANI-CuO/APS (0.10M) 4.15 ⁄ 10 À04 PANI-CuO/APS (0.15M) 8.38 ⁄ 10 À05 PANI-CuO/APS (0.30M) 1.29 ⁄ 10 À05 PANI-CuO/APS (0.50M) 7.46 ⁄ 10 À06 Fig. 9.…”

Section: Samplesmentioning

confidence: 98%

“…Its wide range of associated electrical, electrochemical and optical properties, coupled with good stability, turns PANI into an attractive material for application such as electronic devices, gas sensors, microwave absorption layers and super capacitors [1][2][3]. The great potential for the fabrication of practical devices such as light emitting diode, electro chemical cell, magnetic device storage, field emitters and humidity sensor [4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of CuO nanoparticles, DBSA doped PANI and PANI/DBSA/CuO hybrid composites for diode and solar cell device development

Ashokan

Ponnuswamy

Jayamurugan

2015

Journal of Alloys and Compounds

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“…The AFM image of the crystalline film of cobalt-hexacyanoferrate grown over three days showed a granular structure (grain size, ~ 200 nm). SQUID magnetometry on nanocrystals of nickel hexacyanoferrate (Nihcf) transferred as a monolayer showed that they were magnetic below 20 K. Sodium hexametaphosphate (HMP) stabilized nickel hexacyanoferrate (NiHCF) nanoparticles were prepared in aqueous solution and were successfully extracted into an organic phase (figure 7) using cetyltrimethylammonium bromide (CTAB) as the surfactant (Bagkar et al 2004). Potassium ion sensing action was demonstrated by us by employing cyclic voltammetry and impedance measurements on NiHCF-DODA films (DODA: dioctadecyl dimethylammonium bromide) (Bagkar et al 2006b).…”

Section: Polycyanometallatesmentioning

confidence: 99%

Molecule-based magnets

Yakhmi

2009

Bull Mater Sci

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The conventional magnetic materials used in current technology, such as, Fe, Fe 2 O 3 , Cr 2 O 3 , SmCo 5 , Nd 2 Fe 14 B etc are all atom-based, and their preparation/processing require high temperature routes. Employing self-assembly methods, it is possible to engineer a bulk molecular material with long-range magnetic order, mainly because one can play with the weak intermolecular interactions. Since the first successful synthesis of molecular magnets in 1986, a large variety of them have been synthesized, which can be categorized on the basis of the chemical nature of the magnetic units involved: organic-, metal-based systems, heterobimetallic assemblies, or mixed organic-inorganic systems. The design of molecule-based magnets has also been extended to the design of poly-functional molecular magnets, such as those exhibiting second-order optical nonlinearity, liquid crystallinity, or chirality simultaneously with long-range magnetic order. Solubility, low density and biocompatibility are attractive features of molecular magnets. Being weakly coloured, unlike their opaque classical magnet 'cousins' listed above, possibilities of photomagnetic switching exist. Persistent efforts also continue to design the ever-elusive polymer magnets towards applications in industry. While providing a brief overview of the field of molecular magnetism, this article highlights some recent developments in it, with emphasis on a few studies from the author's own lab.

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Synthesis of surfactant encapsulated nickel hexacyanoferrate nanoparticles and deposition of their Langmuir–Blodgett film

Cited by 57 publications

References 45 publications

Electrocatalytic properties of prussian blue nanoparticles supported on poly(m-aminobenzenesulphonic acid)-functionalised single-walled carbon nanotubes towards the detection of dopamine

Electrocatalytic properties of prussian blue nanoparticles supported on poly(m-aminobenzenesulphonic acid)-functionalised single-walled carbon nanotubes towards the detection of dopamine

Synthesis and characterization of CuO nanoparticles, DBSA doped PANI and PANI/DBSA/CuO hybrid composites for diode and solar cell device development

Molecule-based magnets

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