Copper 2 chloride dehydrate

Zinc(II) nitrate hexahydrate (≥98%), 2-methylimidazole (>99%), salicylaldoxime, copper(II) chloride dehydrate, calcium(II) nitrate tetrahydrate, iron(II) chloride tetrahydrate, iron(III) chloride, nickel(II) nitrate hexahydrate, manganese(II) chloride, and sodium chloride were purchased from Sigma-Aldrich and used as received. Anhydrous methanol (>99.8%, Sigma-Aldrich) and Milli-Q water (18.2 MΩ cm⁻¹) were used in the synthesis of ZIF-8/ZIOS and ion solution preparations, respectively.

Alpha-amylase (EC 3.2.1.1)—77 U/mg from human saliva type XIII-A, rutine hydrate, quercetin, kaempferol, trans-resveratrol, DPPH (2,2-Diphenyl-1-picrylhydrazyl), trolox (6-hydroxy-2,5,7,8-tetramethylchromane-2-carboxylic acid), neocuproine, ammonium acetate, Copper (II) chloride dehydrate, 2,4,6-tris (2-pyridyl)-s-triazine (TPTZ), iron(III) chloride hexahydrate and 3,5-di-tert-4-butylhydroxytoluene (BHT) were purchased from Sigma-Aldrich Chemie (Schnelldorf, Germany). Delphinidin-3-O-galactoside chloride for HPLC, Cat. No. 0905, delphinidin-3-O-glucoside chloride for HPLC, Cat. No. 0938 S, malvidin-3-O-glucoside chloride for HPLC, Cat. No. 0911 S, cyanidin-3-O-glucoside chloride for HPLC and Cat. No. 0915 S were purchased from Extrasynthese (Lyon, France). HPLC grade methanol, acetonitrile and formic acid were obtained from Merck (Darmstadt, Germany). Starch soluble GR (500 gm), 3,5-dinitrosalicylic acid, 2-[4-(2-Hydroxyethyl)-1-piperazinyl]-ethanesulfonic acid buffer substance HEPES, Folin–Ciocalteu’s phenol reagent, formic acid, gallic acid, potassium chloride and sodium acetate were purchased from Merck (Darmstadt, Germany).

Copper (II) chloride dehydrate (99.999%), sodium hydroxide (NaOH) (98%), ammonia solution (25%), potassium hexachlororuthenate(IV) (K₂RuCl₆) (99.95%), nickel (II) nitrate hexahydrate [Ni(NO₃)₂ ∙ 6H₂O] (98.5%), and NF (1.6 mm thickness) were purchased from Sigma-Aldrich. Iron (III) nitrate nonahydrate [Fe(NO₃)₃ ∙ 9H₂O] (99%) was purchased from EMSURE-Merck. Ti mesh (60 mesh, 0.2 mm thickness), NM (60 mesh, 0.2 mm thickness), SSM (80 mesh, 0.18 mm thickness, Type 316) and CM (60 mesh, 0.19 mm thickness) were purchased from Fisher Scientific. All the chemicals were used as received. Mesh substrates were cleaned with isopropanol/ethanol (1:1, v/v) and distilled water, and dried using a N₂-gun stream. Pt@TFF and (PTFE-untreated) CPRs (AvCarb MGL280) used as GDLs were purchased from FuelCell Store. Zirfon Perl UTP 500+ and Zirfon Perl UTP 220 used as diaphragms were purchased from Agfa. Sustainion X37-50 grade 60 AEM was purchased from Dioxide Materials. Fumasep FAA-3-PK AEM was purchased from FuelCell Store.