Relationship between the Synthesis of Prussian Blue Pigments, Their Color, Physical Properties, and Their Behavior in Paint Layers

Samain, Louise; Grandjean, Fernande; Long, Gary J.; Martinetto, Pauline; Bordet, Pierre; Strivay, David

doi:10.1021/jp3111327

Cited by 136 publications

(119 citation statements)

References 51 publications

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“…Prussian blue and its analogues are a part of metal hexacyanoferrates family with a common molecular formula of A x M[Fe(CN) 6 ] y ·zH 2 O (A and M are alkali metals (e.g., Li, Na, K) and transition metals (e.g., Fe, Mn, Co, Ni), respectively), the value of x depends on the valance of M and Fe, and it varies from 0 to 2. The blue color of this material is observed because of the inter‐valent electron transfer from an iron(II) to an iron(III) ion in various local atomic environments, when the appropriate light is absorbed at about 700 nm . Typically, the Prussian blue shows an open crystal framework with face‐centered cubic (FCC) structure having a space group of Fm3̅ m ( Figure ).…”

Section: Cathode Materialsmentioning

confidence: 99%

“…There are two kinds of precipitation techniques, direct and indirect ( Figure a). The direct method consists of a single step of preparation, where the precursor solutions are just mixed together, followed by washing the material with distilled water . The KFe[Fe(CN) 6 ] can be prepared by the direct precipitation technique by adding FeCl 3 to the solution of K 4 Fe(CN) 6 solution .…”

Section: Cathode Materialsmentioning

confidence: 99%

“…The Fourier difference maps obtained for the KFe III [Fe II (CN) 6 ]·zH 2 O structure demonstrate the position of K ion in the crystal structure (Figure b). Red colored centers demonstrate the excess electron density in the compound, which in turn reveal the location of K ions in the zeolitic‐like positions . K 2 Mn[Fe(CN) 6 ] material can be prepared by the same technique by just changing the precursor to Mn(NO 3 ) 2 and adding it to the same K 4 Fe(CN) 6 solution .…”

Section: Cathode Materialsmentioning

confidence: 99%

“…Direct and indirect precipitation techniques to produce Prussian blue; and b) Fourier difference maps for KFe III [Fe II (CN) 6 ]· z H 2 O. Reproduced with permission . Copyright 2013, American Chemical Society.…”

Section: Cathode Materialsmentioning

confidence: 99%

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Advancements and Challenges in Potassium Ion Batteries: A Comprehensive Review

Rajagopalan

Tang

et al. 2020

Adv Funct Materials

703

401

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Demand for energy in day to day life is increasing exponentially. However, existing energy storage technologies like lithium ion batteries cannot stand alone to fulfill future needs. In this regard, potassium ion batteries (KIBs) that utilize K ions in their charge storage mechanism have attracted considerable attention due to their unique properties and are therefore established as one of the future battery systems of interest among the scientific community. Nevertheless, the development and identification of appropriate electrode materials is very essential for practical applications. This review features the current development in KIBs electrode and electrolyte materials, the present challenges facing this technology (in the commercial aspect), and future aspects to develop fully functional KIBs. The potassium storage mechanisms, evolution of the KIBs, and the advantages and disadvantages of each category of materials are included. Additionally, various approaches to enhance the electrochemical performances of KIBs are also discussed. This review is not only an amalgamation of different viewpoints in literature, but also contains concise perspectives and strategies. Moreover, the potential emergence of a novel class of K‐based dual ion batteries is also analyzed for the first time.

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Section: Cathode Materialsmentioning

confidence: 99%

Section: Cathode Materialsmentioning

confidence: 99%

Section: Cathode Materialsmentioning

confidence: 99%

Section: Cathode Materialsmentioning

confidence: 99%

See 2 more Smart Citations

Advancements and Challenges in Potassium Ion Batteries: A Comprehensive Review

Rajagopalan

Tang

et al. 2020

Adv Funct Materials

703

401

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“…Blue pigments such as ultramarine blue, Prussian blue, and phthalocyanine blue are widely used in printing inks, cosmetics, paints, plastics, and other color applications . However, exposure to acids and reduction by other chemicals can cause fading of these blue pigments . Cobalt blue consists mainly of cobalt aluminate, and is a chemically and thermally stable solid pigment.…”

Section: Introductionmentioning

confidence: 99%

Solid‐state synthesis and characterization of cobalt blue core‐shell pigment particles

et al. 2018

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Cobalt blue is one of the most chemically and thermally stable blue pigments. However, cobalt is scarce and expensive. To minimize the use of cobalt and reduce production costs and toxicity, cobalt blue core‐shell pigments were synthesized by a solid‐state method, which is cheaper than a liquid‐phase reaction. Small cobalt hydroxide particles and large α‐alumina particles, in various ratios, were used as the starting materials. The dry mixed powders were calcined at 1200°C for 2 hours. Elemental mappings of the surfaces and cross sections of the synthesized particles showed that the cobalt blue had a core‐shell structure. X‐ray diffraction patterns showed that the synthesized cobalt blue consisted of an α‐alumina core and a cobalt aluminate shell. The color tone of the synthesized cobalt blue was evaluated from the lightness (L*) and chroma (C*) values. The color tone of the cobalt blue synthesized in this study was almost same as those of commercially available samples although the cobalt molar fraction was lower than the stoichiometric ratio (Co/(Co + Al) = 0.33, Co/Al = 0.5) which was calculated from the chemical reaction formula.

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