Chemical and biological sensors based on electroactive inorganic polycrystals

Karyakin, Arkady A.

doi:10.1016/b978-012373738-0.50015-5

Cited by 7 publications

(2 citation statements)

References 181 publications

(178 reference statements)

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“…One such CPs, similar to MOFs, is Prussian blue (PB), a cyanide-bridged coordination compound between two Fe species in different oxidation states. PB is traditionally synthesized by mixing the metal ion, Fe 3+ (Fe 2+ ) and a corresponding metal octahedral complex, hexacyanoferrate (hexacyanoferric) in an acidic solution [3]. It has the general formula A x Fe III [Fe II (CN) 6 ] y •φ 1−y •nH 2 O (n = [14][15][16], where A is an alkali metal ion, K + or Na + , (for the "soluble" PB which is often a dispersed yet lyophobic colloid) and φ Irrespective of the current and prospective applications of PB and PBAs for advanced functions, some serious shortcomings limit or even eliminate their utilization potentials.…”

Section: Introductionmentioning

confidence: 99%

“…PB deposition onto the thermally-activated graphites was achieved via two new synthetic routes: for the first time, a one-solution PB formation medium with a solid steel initiator without applied potential; secondly, a solution dipping approach in high K + (1 M). Both protocols circumvent the intermediary acid solution phases traditionally held to be necessary for PB synthesis and stability [3]. The electrochemical and electronic properties of these PB@treated graphite materials suggest multiple electrochemical, non-electrochemical and electronic applications without compromise to the structural and functional integrity of these composites.…”

Section: Introductionmentioning

confidence: 99%

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Electrochemical stability and capacitance of in-situ synthesized Prussian blue on thermally-activated graphite

et al. 2019

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The search has been on for years to find at least, a stable, high surface area scaffold for Prussian blue (PB) and its analogs. If successful, PB's vast potential applications could be practicable. This, is besides other innate issues with PB such as poor cycle stability, low electronic conductivity to mention a few. For the first time, a stable Prussian blue@thermally activated graphite felt scaffold, with cycling stability of 2100 cycles, from − 0.5 to 1.3 V, and in 1 M KCl, for at least 36 h is reported. At the end of 2100 CV cycles, sample capacitance more than tripled (381 mF cm −2 compared to 120 mF cm −2 at start of experiment). These properties suggest a practical ion-sieve for specific cation removal from contaminated water. Two new synthesis protocols were employed to achieve this: (a) a first time, single solution PB synthesis without externally applied potential, current or even elevated temperature and (b) a two-step solution-dipping process not involving acidic conditions. PB from both protocols exhibited similar electrochemical characteristics even though the electron relay paths along their charge transfer complexes are different. When probed for its HOMO characteristics, the PB@thermally-treated graphite showed no significant electronic difference from the thermally-treated felt scaffold, suggesting non-compromise of the treated graphite by the PB. Besides cation removal, the electrochemical and electronic properties of these PB@treated graphites suggest multiple electrochemical, non-electrochemical and electronic applications with intact structural and functional integrity.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Electrochemical stability and capacitance of in-situ synthesized Prussian blue on thermally-activated graphite

et al. 2019

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Dynamic Electrochemistry Transduction Methods

Bănică

2012

Chemical Sensors and Biosensors

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Potassium (De‐)insertion Processes in Prussian Blue Particles: Ensemble versus Single Nanoparticle Behaviour

Zampardi

Sokolov

Batchelor‐McAuley

et al. 2017

Chemistry A European J

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Potassium (de-)insertion from Prussian blue (PB) is investigated at the single and multi-particle scale. The electrochemical behaviour is found to differ between the two measurement types. At the single particle level, oxidation of the PB nanoparticles with concomitant K deinsertion occurs more readily than the associated reduction, relating to K insertion. In contrast, the cyclic voltammetry of PB in a composite electrode containing conductive additives and polymeric binder suggests the opposite behaviour. Implications for assessing battery materials are discussed.

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Chemical and biological sensors based on electroactive inorganic polycrystals

Cited by 7 publications

References 181 publications

Electrochemical stability and capacitance of in-situ synthesized Prussian blue on thermally-activated graphite

Electrochemical stability and capacitance of in-situ synthesized Prussian blue on thermally-activated graphite

Dynamic Electrochemistry Transduction Methods

Potassium (De‐)insertion Processes in Prussian Blue Particles: Ensemble versus Single Nanoparticle Behaviour

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