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3 protocols using cu no3 3h2o

1

Synthesis of Graphite-based Nanocomposites

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Graphite flakes, sodium nitrate (NaNO3), potassium permanganate (KMnO4), sulfuric acid (H2SO4, 98%), and hydrogen peroxide (H2O2, 30%) were purchased from Sigma Aldrich, Thailand. Ethylene glycol, In(NO3)·6H2O (>99%), Cu(NO3)·3H2O (>99%), iodine, N719 dye, and fluorine-doped tin oxide (FTO)-coated glass slides sheet resistance ∼7 Ω sq−1 were purchased from Sigma Aldrich. All the other chemicals used in the experiments were of analytical grade.
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2

Metal Ion Interaction with Lactobacillus

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Strain L. plantarum LCC-605 was preserved in our lab [30 (link)]. Dialysis bags with the molecular weight cut-off (MWCO) of 14 kDa were from Spectrum Labs (Rancho Dominguez, USA). CaCl2, CuNO3∙3H2O, FeSO4, MgCl2, PbCl2, MnSO4∙7H2O, AlCl3∙6H2O, FeCl3∙6H2O, CoCl2∙6H2O, AgNO3, ZnCl2, NaCl, and CdCl2 were purchased from Sigma-Aldrich. Other chemicals used in this study were of analytical grade.
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3

Synthesis of Polycrystalline K2Cu[Fe(CN)6]

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On the basis of the exploration of synthesis
parameters reported in ref (25 (link)), we synthesized polycrystalline samples of K2Cu[Fe(CN)6] via a citrate-assisted precipitation in aqueous
media. CuNO3·3H2O (Sigma-Aldrich, 1 mmol)
was dissolved in an aqueous solution of potassium citrate (Sigma-Aldrich,
1 M, 20 mL). This solution was added dropwise to a stoichiometric
aqueous solution of K4Fe(CN)6 (Sigma-Aldrich,
20 mL) at 80 °C with stirring. The mixture was stirred for 2 h
and then allowed to age for a further 2 h. During this period, a deep-red
precipitate formed. This precipitate was isolated by centrifugation
and washed with a 50:50 water/ethanol mixture in order to prevent
the solid dispersing. The solid was dried in air at 70 °C.
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