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Ammonia solution nh4oh

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Ammonia solution (NH4OH) is a laboratory reagent composed of ammonia gas dissolved in water. It is a clear, colorless liquid with a pungent odor. The solution has a pH range of 11-13, making it a basic compound. Ammonia solution is commonly used in various analytical and synthetic laboratory procedures.

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Lab products found in correlation

Ammonium persulfate ap, by Merck Group (5 mentions) Hydrochloric acid (hcl), by Merck Group (4 mentions) Hydrogen peroxide h2o2, by Merck Group (4 mentions) Sodium hydroxide (naoh), by Merck Group (4 mentions) N methylpyrrolidone nmp, by Merck Group (4 mentions) Sulfuric acid h2so4, by Merck Group (3 mentions) Potassium hydroxide koh, by Merck Group (2 mentions) C2h5oh, by Merck Group (2 mentions) Sodium nitrate nano3, by Merck Group (2 mentions) Potassium permanganate kmno4, by Merck Group (2 mentions) 3 4 ethylenedioxythiophene edot, by Merck Group (2 mentions) Tungsten trioxide wo3, by Merck Group (2 mentions) Aniline c6h5nh2, by Merck Group (2 mentions) Ethanol c2h5oh, by Merck Group (2 mentions) Iron 3 chloride hexahydrate fecl3 6h2o, by Merck Group (1 mentions) Nh4cl, by Merck Group (1 mentions) Perchloric acid hclo4, by Merck Group (1 mentions) 2 4 dichlorophenol 2 4 dcp, by Merck Group (1 mentions) Sodium chloride (nacl), by Merck Group (1 mentions) Polydadmac, by Merck Group (1 mentions)

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Ammonia solution (212 citations) NH4OH (155 citations) NH4OH solution (8 citations)

9 protocols using ammonia solution nh4oh

1

Hematite Synthesis from Iron Salts

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The following reagents: iron (III) chloride hexahydrate (FeCl3⋅6H2O, 98%, Sigma Aldrich, Milano, Italy), sodium hydroxide (NaOH, 98%, La Farmochimica, Genova, Italy), ammonia solution (NH4OH, 30%, Sigma Aldrich, Milano, Italy), copper (II) oxide (CuO, 99%, Fisher Scientific, Milano, Italy), polyvinyl alcohol (PVA, (C2H4O)n, 72 ± 10 kDa, 98%, La Farmochimica, Genova, Italy) were used as purchased and diluted, when necessary, with Milli-Q® water.
The methods adopted for the synthesis of hematite rely upon hydrolysis and precipitation of iron hydroxide (Fe(OH)3) using NaOH or NH4OH as bases in an aqueous medium. In both cases, Fe(OH)3 underwent further thermal treatments to reach the final product corresponding to α-hematite.
Costa C., Cornacchia M., Pagliero M., Fabiano B., Vocciante M, & Reverberi A.P. (2020). Hydrogen Sulfide Adsorption by Iron Oxides and Their Polymer Composites: A Case-Study Application to Biogas Purification. Materials, 13(21), 4725.
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2

Hydrothermal Synthesis of Titanium Oxide Nanoparticles

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These syntheses were performed at a buffered pH 9.5 obtained by dissolving an ammonium salt (NH4Cl, >99.5% pure Sigma-Aldrich, Merck, Milano-Italy, or (NH4)2SO4, >99% pure, Baker, Thermo Fisher Scientific, Waltham, MA, USA) in an ammonia solution (NH4OH) 28% by weight in water, Sigma-Aldrich, Merk, Milano, Italy); the salt used to create the buffer solution was varied to check whether the anion of the ammonium salt had an effect on NP extraction, on the polymorph obtained and on morphology. The following hydrolysis ratios (r) were used (see also Supplementary Materials for details): mol(H2O)/mol(Ti(OiPr)4 = 16.6, 41.5, 75, 128.7, 164.9, 225.2, 345.9, 707.9, 1431.8. The hydrothermal treatment was performed for 24 h at 150 or 180 °C.
Pretto T., Franca M., Zani V., Gross S., Pedron D., Pilot R, & Signorini R. (2023). A Sol-Gel/Solvothermal Synthetic Approach to Titania Nanoparticles for Raman Thermometry. Sensors (Basel, Switzerland), 23(5), 2596.
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3

Synthesis of Nanocomposites using Common Reagents

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The monomer aniline (ANI) (purity ≥ 99.5%, Sigma-Aldrich, St. Louis, MI, USA), perchloric acid (HClO4, 70%, Merck KGaA, Darmstadt, Germany), hydrochloric acid (HCl, 37%, Merck KGaA, Darmstadt, Germany), and ultrapure H2O (18.2 MΩ cm, Elga-Labwater-Purelab system, ELGA LabWater, Veolia Water Technologies Deutschland GmbH, Celle, Germany) were used in all the experiments. Aluminum oxide nanoparticles (Al2O3) (≥99.98%, Merck KGaA, Darmstadt, Germany), titanium (IV) oxide (TiO2) (≥99.98%, Merck KGaA, Darmstadt, Germany), zinc oxide (ZnO) (99%, Merck KGaA, Darmstadt, Germany), ammonium persulfate (APS) (≥98%, Merck KGaA, Darmstadt, Germany), and ammonia solution (NH4OH) (25%, Merck KGaA, Darmstadt, Germany) were used for the preparation of nanocomposites.
Bekhoukh A., Moulefera I., Sabantina L, & Benyoucef A. (2021). Development, Investigation, and Comparative Study of the Effects of Various Metal Oxides on Optical Electrochemical Properties Using a Doped PANI Matrix. Polymers, 13(19), 3344.
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4

Synthesis of Graphene-based Electrodes

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Graphite powder (Superior Graphite Co., Ltd., Chicago, IL, USA. 99.9%), 3,4-ethylenedioxythiophene (EDOT; Sigma Aldrich, Madrid, Spain. ≥99.5%), tungsten trioxide (WO3; Merck, Shanghai, China. ≥99%), ammonium persulfate (APS; Merck, Riga, Lithuania. ≥98%), polyvinylidene fluoride (PVDF); ammonia solution (NH4OH; Merck, Riga, Lithuania. 25%), N-methylpyrrolidone (NMP; Merck), carbon black (CB, Superior Graphite Co., Ltd., Chicago, IL, USA) as conductive additive. Sodium hydroxide (NaOH; Merck, Riga, Lithuania. 37%), sulfuric acid (H2SO4; Merck, Riga, Lithuania. 90%), hydrogen peroxide (H2O2; Merck, 70%), sodium nitrate (NaNO3; Merck), potassium hydroxide (KOH; Merck, Riga, Lithuania), potassium permanganate (KMnO4; Merck, Riga, Lithuania), ethanol (C2H5OH; Merck, Riga, Lithuania. 96%), filter paper, and deionized water (DIW). A commercial grade stainless steel (SS) foil (thickness: 0.2 mm) was used as the substrate for electrode preparation.
Memou C.H., Bekhti M.A., Kiari M., Benyoucef A., Alelyani M., Alqahtani M.S., Alshihri A.A, & Bakkour Y. (2023). Fabrication and Characterization of a Poly(3,4-ethylenedioxythiophene)@Tungsten Trioxide–Graphene Oxide Hybrid Electrode Nanocomposite for Supercapacitor Applications. Nanomaterials, 13(19), 2664.
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5

Synthesis of Pyrrole-Based Organic Compounds

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Pyrrole (C4H5N; Sigma Aldrich, St. Louis, MO, USA, 98%), aniline (C6H5NH2; Sigma Aldrich, ≥99.5%), amorphous silicon dioxide (SiO2; Sigma Aldrich, 99.5%), ammonia solution (NH4OH; Merck, 25%), ammonium persulfate (APS; Merck, Rahway, NJ, USA, ≥98%), N-methylpyrrolidone (NMP; Merck), hydrochloric acid (HCl; Merck, 75%), sodium hydroxide (NaOH; Merck, 37%), 2,4-dichlorophenol (2,4-DCP; Merck, 98%), ethanol (C2H5OH) (Merck, 96%), filter paper, and distilled water.
Bekhoukh A., Kiari M., Moulefera I., Sabantina L, & Benyoucef A. (2023). New Hybrid Adsorbents Based on Polyaniline and Polypyrrole with Silicon Dioxide: Synthesis, Characterization, Kinetics, Equilibrium, and Thermodynamic Studies for the Removal of 2,4-Dichlorophenol. Polymers, 15(9), 2032.
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6

Aniline-Montmorillonite Composite Synthesis

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Aniline (C6H5NH2; Sigma Aldrich, Darmstadt, Germany. ≥99.5%), cethyltrimethyl ammonium bromide (CTAB; C16H33N(CH3)3Br; Merck, Darmstadt, Germany. ≥98%), ammonia solution (NH4OH; Merck, Riga, Lithuania. 25%), ammonium persulfate (APS; Merck, Riga, Lithuania. ≥98%), N-methylpyrrolidone (NMP; Merck, Darmstadt, Germany), sodium hydroxide (NaOH; Merck, Riga, Lithuania. 37%), hydrochloric acid (HCl; Merck, Riga, Lithuania. 75%), hydrogen peroxide (H2O2; Merck, Riga, Lithuania. 70%), sodium chloride (NaCl; Merck, Riga, Lithuania), Malachite Green (MG; C23H25ClN2; Merck, Darmstadt, Germany. 99%), ethanol (C2H5OH) (Merck, Darmstadt, Germany. 96%), filter paper and deionized water (DI) were used. Additionally, the montmorillonite clay (Mt) used in this study was obtained from ENOF (Maghnia, Tlemcen, Algeria).
Mennas N., Lahreche S., Chouli F., Sabantina L, & Benyoucef A. (2023). Adsorption of Methylene Blue Dye by Cetyltrimethylammonium Bromide Intercalated Polyaniline-Functionalized Montmorillonite Clay Nanocomposite: Kinetics, Isotherms, and Mechanism Study. Polymers, 15(17), 3518.
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7

Silica Nanoparticle Surface Functionalization

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n-decane (>99%, ABCR GmbH), Didecyldimethylammonium bromide (di-C10-DMAB, >98%, TCI), Hydrogen peroxide (H2O2, VWR, 30%), Ethanol (absolute, Merck), tetraethyl orthosilicate (TEOS, Sigma-Aldrich), ammonia solution (NH4OH, 25%, Merck), polydiallyldimethylammonium chloride (Poly-DADMAC, 400–500 kDa, 20 wt%, Sigma-Aldrich), silica nanoparticles 72 nm±6 nm (Klebosol, Clariant, Switzerland), silica nanoparticles 39 nm±4 nm (Klebosol, Clariant, Switzerland), silica nanoparticles 12 nm (CV<15%, Corpuscolar Inc, USA), octadecyltrichlorosilane (OTS, 95%, ABCR GmbH), decaline (Decahydronaphtalene, mix cis+trans, anhydrous, Sigma-Aldrich), Norland optical adhesive (NOA63, Norland products, USA), 3-aminopropyltriethoxysilane (APTES, 97%, ABCR), α-bromoisobutyryl bromide (BrIn, 98%, Aldrich), triethylamine (99%, Sigma-Aldrich), dichloromethane (anhydrous, 99.8%, Acros Organics), dichloromethane (99.99%, Acros Organics), 6.27 μm silica microparticles (SiO2-R-10416, Microparticles, Germany). All products were used as received. All reported particle sizes are nominal diameters.
Zanini M., Marschelke C., Anachkov S.E., Marini E., Synytska A, & Isa L. (2017). Universal emulsion stabilization from the arrested adsorption of rough particles at liquid-liquid interfaces. Nature Communications, 8, 15701.
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8

Synthesis of rGO Nanoparticles

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The graphite flakes used in this work to form the rGO nanoparticles were obtained from Asbury Graphite Mills. 85% Phosphoric acid (H3PO4), 98% sulfuric acid (H2SO4), 37% hydrochloric acid (HCl and 25% ammonia solution (NH4OH) were obtained from Merck. The 99.9% Silver nitrate (AgNO3), 30% hydrogen peroxide (H2O2) and polyvinyl alcohol (PVA) with MW ~31,000 were obtained from Sigma Aldrich. Potassium permanganate (KMnO4) was purchased from R&M Chemicals. All chemicals were used as received without any further processing.
Ahmad H., Albaqawi H.S., Yusoff N., Reduan S.A, & Yi C.W. (2020). Reduced Graphene Oxide-Silver Nanoparticles for Optical Pulse Generation in Ytterbium- and Erbium-Doped Fiber Lasers. Scientific Reports, 10, 9408.
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9

Synthesis of Graphene-based Electrodes

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Graphite powder (Superior Graphite Co., Ltd., Chicago, IL, USA. 99.9%), 3,4-ethylenedioxythiophene (EDOT; Sigma Aldrich, Madrid, Spain. ≥99.5%), tungsten trioxide (WO3; Merck, Shanghai, China. ≥99%), ammonium persulfate (APS; Merck, Riga, Lithuania. ≥98%), polyvinylidene fluoride (PVDF); ammonia solution (NH4OH; Merck, Riga, Lithuania. 25%), N-methylpyrrolidone (NMP; Merck), carbon black (CB, Superior Graphite Co., Ltd., Chicago, IL, USA) as conductive additive. Sodium hydroxide (NaOH; Merck, Riga, Lithuania. 37%), sulfuric acid (H2SO4; Merck, Riga, Lithuania. 90%), hydrogen peroxide (H2O2; Merck, 70%), sodium nitrate (NaNO3; Merck), potassium hydroxide (KOH; Merck, Riga, Lithuania), potassium permanganate (KMnO4; Merck, Riga, Lithuania), ethanol (C2H5OH; Merck, Riga, Lithuania. 96%), filter paper, and deionized water (DIW). A commercial grade stainless steel (SS) foil (thickness: 0.2 mm) was used as the substrate for electrode preparation.
Memou C.H., Bekhti M.A., Kiari M., Benyoucef A., Alelyani M., Alqahtani M.S., Alshihri A.A, & Bakkour Y. (2023). Fabrication and Characterization of a Poly(3,4-ethylenedioxythiophene)@Tungsten Trioxide–Graphene Oxide Hybrid Electrode Nanocomposite for Supercapacitor Applications. Nanomaterials, 13(19), 2664.
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