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5 protocols using cobaltous nitrate hexahydrate

1

Lignin-Grafted Polyethylene Composite

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LG was extracted from a black liquor collected from an alkali pulping mill in Hunan Province, China according to an acid precipitate method which has been exhaustively described in our previous study.22 (link) Commercially available PE powder with average Mw of ∼4000 and Mn of ∼1700 GPC was provided by Sigma-Aldrich Corporation (St. Louis, MO, USA). Chemicals including nickel nitrate hexahydrate (Ni), cobaltous nitrate hexahydrate (Co), iron nitrate nonahydrate (Fe), manganese nitrate tetrahydrate (Mn) and copper nitrate trihydrate in analytical reagent grade were obtained from Sigma-Aldrich Corporation (St. Louis, MO, USA).
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2

Synthesis of Cobalt Oxalate Nanoparticles

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Sodium hydroxide (NaOH) pellets (ACS reagent, ≥97.0%), oxalic acid (H2C2O4, 98%) powder, cobaltous nitrate hexahydrate (Co(NO₃)₂·6H₂O, reagent grade, 98%) flakes were purchased from Sigma-Aldrich (St. Louis, MO, USA). Anhydrous alcohol (99%) was purchased from Sinopharm Chemical Reagent Co., Ltd., Shanghai, China. Ultrapure water (18.2 MΩ cm) was purified on a Milli−Q Advantage A10 (Millipore, USA). All reagents were used without further purification.
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3

Synthesis of Cobalt-based Nanocomposite Electrodes

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Zinc nitrate hex hydrate (N2O6Zn·6H2O), sodium sulfide hydrate (Na2S·9H2O), cobaltous nitrate hexahydrate (Co(NO3)2·6H2O), carbon black (CB), potassium hydroxide pellets (KOH), N-polyvinylidene-fluoride (PVDF), aniline and HCl were used and purchased from Sigma-Aldrich. Nickel Foam (NF) was acquired from Urich Technology (Malaysia). Nickel Foam (NF) was washed with ethanol, deionized (DI) water, and HCl to remove the oxide layer and the impurities from the NF surface. In this work, all solutions were prepared with deionised (DI) water.
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4

Synthesis of Modified Mesoporous Silica

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The chemicals applied for the synthesis of MCM-48 and modified MCM-48 materials included tetraethyl orthosilicate (Sigma Aldrich, purity: 98%), absolute alcohol (A.K. Sales Agency, purity: 99.9%), cetyltrimethylammonium bromide (Sigma Aldrich, minimum purity: 98%), aqueous ammonia (Merck, concentration: 25%), ferric nitrate nonahydrate (Sigma Aldrich, minimum purity: 98%) and cobaltous nitrate hexahydrate (Sigma Aldrich, minimum purity: 98%). These chemicals and reagents were procured from commercial sources and were utilized without the need for additional purification. The synthesis procedure involved the use of double distilled water.
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5

Synthesis of Metal-Organic Framework Compounds

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Cobaltous nitrate hexahydrate (Co(NO3)2·6H2O), gadolinium nitrate hexahydrate (Gd(NO3)3·6H2O), lanthanum nitrate hexahydrate (La(NO3)3·6H2O), neodymium nitrate hexahydrate (Nd(NO3)3·6H2O), ytterbium nitrate pentahydrate (Yb(NO3)3·5H2O) and samarium nitrate hexahydrate (Sm(NO3)3·6H2O) were obtained from Sigma-Aldrich (USA). Nickel nitrate hexahydrate (Ni(NO3)2·6H2O), strontium nitrate (Sr(NO3)2) and zinc nitrate hexahydrate (Zn(NO3)2·6H2O) were obtained from Damao Chemical Reagent Factory (Tianjin, China). Uranium nitrate oxide (UO2(NO3)2) was obtained from Chemical Reagent Purchasing and Supply Station (Shanghai, China). Zirconium chloride (ZrCl4)) and 2-aminoterephthalic acid were obtained from Heowns Biochemical Technology Co., Ltd (Tianjin, China). Phytic acid sodium salt were purchased fromSolarbio Science & Technology Co., Ltd (Beijing, China). Tetraethoxysilane (TEOS) was obtained from J&K Chemicals Ltd (China). Iron (III) chloride hexahydrate (FeCl3·6H2O), Sulfuric acid (H2SO4), nitric acid (HNO3), hydrochloric acid (HCl), ethylene glycol (EG), N, N-dimethylformamide (DMF), methanol (MeOH), ethanol (EtOH), and other reagents were obtained from Tianjin Chemical Reagent No. 6 Factory (China). High-purity deionized water (18.2 MΩ cm) was obtained from a Millipore Milli-Q direct water purification system (USA).
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