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General
- Prussian blue(PB) is
a very dark blue, colorfast, non-toxic pigment.
- The generic name for
Prussian Blue is iron blue.
- It is an inorganic
compound with the idealized formula Fe7(CN)18.
- PB is insoluble, but
it tends to form such small crystallites that colloids are common.
- PB is strongly
colored and tends towards black and dark purple when mixed with other
oil paints.
- Prussian blue was
first produced as a blue dye.
- Some of its commonly
used names include Hamburg Blue, Paris Blue, bronze blue, celestial
blue, cyanine, Haarlem blue, oriental blue, and potash blue.
Synthesis &
Process
- The venerable solid
pigment Prussian Blue, FeIII 4- [FeII(CN)6]3·zH2O, is readily prepared
by addition of iron(iii) ions to an aqueous ferrocyanide solution.
- In-situ Mössbauer
spectra of an Insoluble Prussian Blue-modified graphite electrode
clearly show that 10% of the high spin iron underwent a quasi-reversible
electrochemical redox reaction.
- Prussian blue (PB)
particles with the size of ca. 5 nm were synthesized and immobilized in
a multilayer structure, as a strategy for the potential development of
an amperometric transducer for oxidase-enzyme-based biosensors.
Application
- Prussian Blue-coated
IDA electrodes are, in principle, suitable as chemiresistors for the
determination of alkali ion concentrations with increasing selectivity
in the series Li<Na<K<Rb<Cs.
- Gruneberg’ described
“siderocytes” as erythrocytes containillg granules which were positive
for iron when subjected to the prussian blue reaction.
- The Prussians blue
reactions was founsd useful for the denisonstrahioms of irons ins the
celloidinized ashs left after direct nsicroinucineratioms.
- The pigment Prussian
blue, an iron hexacyanoferrate complex compound, was used by the
painters in Paris.
- Prussian blue is
effective on removing radiocesium from the body.
Technology
- The mass transport
behavior of PB films in anhydrous acetonitrile (AN) and propylene
carbonate (PC) solutions has been studied using the cyclic EQCM
technique and the electrochemical/electrogravimetric (EC/EG) impedance
technique.
- The nature of thin
Prussian Blue films on platinum substrates can be characterized with in
situ Raman spectroelectrochemical technique.
- Voltammetric,
chronopotentiometric, and spectroelectrochemical technique on the
homogeneous-phase (single phase) reaction of Prussian blue (PB)/Everitt's
salt (ES) system in KC1 aqueous solution were carried out as a model for
understanding the homogeneous electrochemical reaction of manganese
dioxide.
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