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176 protocols using zinc acetate

1

Synthesis of ZnO Quantum Dots

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ZnO QD synthesis was based on a previous paper.38 Specifically, zinc acetate (0.1 mol, Sigma Aldrich, 98%) was refluxed in ethanolic solution (50 mL, VWR) for 2 hours. After that, the zinc acetate solution (10 mL) was diluted with ethanol (20 mL), and LiOH powder (2.8 mmol, Sigma Aldrich, 99%) was added to the previous solution with magnetic stirring. Finally, ZnO QDs were produced from the reaction, washed with n-hexane and ethanol, separated with a centrifuge, and dried in air at 50 °C for 8 hours.
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2

Synthesis of Zinc Sulfide Nanoparticles via Copolymer Micelles

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0.5 wt % solutions (c = 5 mg/mL) of the diblock copolymer polystyrene(x)-blockpoly(2-vinylpyridine)(y) [PS(x)-b-P2VP(y), where x, y represent the M n of the individual chains with x = 16000, 34000, 52100, y = 3500, 18000, 31000, respectively] (Polymer Source, Inc.) dissolved in p-xylene (Sigma-Aldrich) were stirred overnight. For preparation of the loaded micelles, zinc acetate (Sigma-Aldrich), predissolved in propan-1-ol (Sigma-Aldrich) at 0.073 mg/μL, was added to the micelle solutions at concentrations ranging from 0.05 to 0.5:1 Zn 2+ :P2VP ratio. The solutions were left to stir overnight. For the sulfidation of the zinc particles, the zinc acetate loaded micelle solutions were treated with H 2 S generated in situ, by implementing a three-flask system: 60 mg sodium sulfide (Sigma-Aldrich) in the first flask, the Zn 2+ micelle solution in the second, and bulk zinc nitrate (Sigma-Aldrich) in deionized water in the third. Flasks were connected and deoxygenated with nitrogen carrier gas for 10 min before 10 mL 2 M nitric acid (Sigma-Aldrich) was injected into the first flask and the reaction left to stir for 40 min. To obtain a monolayer of micelles on a surface, a previously cleaned silicon substrate was dipped into the solution and withdrawn at a constant speed. The silicon wafer was dried in air at room temperature.
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3

Synthesis and Characterization of Doxorubicin Nanoformulations

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Cadmium (II) acetate (99.995%), zinc acetate (99.99%), zinc stearate (technical grade), elemental selenium (powder), elemental sulfur (powder), trioctylphosphine (90%), 1-octadecene (90%), oleic acid (90%), MPA and TGA were purchased from Merck. All other chemicals and solvents were of analytical grade and used without additional purification. In this work, we used Sindroxocin (50 mg, Actavis, Iceland), an antitumor antibiotic whose active ingredient is doxorubicin hydrochloride (50 mg). It also contains the following excipients: methyl parahydroxybenzoate (5 mg) and lactose monohydrate (263.15 mg). Before analysis, 3 mg (corresponding to 0.5 mg of DOX) of the lyophilizate was dissolved in 1 mL of Milli-Q water. From the resulting solution (500 µg/mL), solutions with concentrations of 50, 5 and 1 µg/mL were obtained.
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4

Acid Activation of Montmorillonite Clay

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Montmorillonite (Mt) obtained from Sidoarjo, East Java, Indonesia, was acid-activated prior to use. The activation was done by refluxing the 20% w/v clay suspension in 1 N H2SO4 for 4 h, followed by washing with H2O. Zinc acetate, tetraethyl orthosilicate (TEOS), cetyltrimethylammonium bromide (CTMA), tetramethylammonium hydroxide (TMAOH), and methyl violet (MV) were purchased from Merck-Millipore (Darmstadt, Germany).
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5

Copper-Doped ZnO Nanostructures for Photoactivation

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Copper doping of zinc oxide nanostructures was employed for its photo-reactivation both in visible as well as in UV region of spectrum. For the purpose, zinc acetate (0.01 M, Merck, AR) and copper acetate (0.01 M, Merck, AR) reagents were prepared. Reaction was carried out by adding both the reagents in the micro-wave irradiated potassium hydroxide (0.1 M; Merck, AR) under continuous stirring. Particle growth was visually confirmed by development of milky white coloration of the nanosuspension.
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6

Synthesis of Doped Metal Oxide Nanomaterials

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Thiourea, zinc acetate (Zn(CH₃CO₂)₂·2H₂O), tin(IV) chloride pentahydrate (SnCl4·5H2O), sodium hydroxide (NaOH), and sulfuric acid (H2SO4) were purchased from Merck (Germany). DB1 dye was purchased from Tianjin China Co. Ozone gas was produced by an ozone generator with a capacity of 5 ml/s and a power of 66 W of Bootiatech Iran.
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7

Biogenic Amines Analysis in Non-Alcoholic Beer

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Tyramine (97%), histamine (98%), putrescine (99%), and cadaverine (99%) as main standards were individually ordered from Fluka (Buchs, Switzerland). Hydrochloric acid (37%), 1-octanol, acetonitrile, sodium chloride, acetone, potassium hydroxide (KOH), ethanol, methanol, 2-nitrophenyl octyle ether (NPOE), dipotassium hydrogen phosphate (K2HPO4), potassium hexaferrocyanide and zinc acetate were purchased from Merck (Darmstadt, Germany). Isobutyl chloroformate was obtained from Sigma-Aldrich (St. Louis, MO, USA). Ten non-alcoholic beer samples were randomly purchased from different supermarkets (Tehran, Iran).
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8

Synthesis of Diphenyl Carbonate Derivative

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Diphenyl carbonate, methane dichloride, and tetrahydrofuran were purchased from Merck (Merck, Darmstadt, Germany). Catalysts: zinc acetate, 4-(dimethylamino)pyridine (DMAP) and benzyltriethylammonium chloride also were obtained from Merck (Merck, Darmstand, Germany). Purified water was delivered by Millipore (Millipore, UMCS Lublin, Poland).
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9

Testicular Tissue Sulfide Assay

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Fifty mg of testicular tissues was homogenized in 500 µl of phosphate-buffered saline. After incubating the homogenates with L-cysteine (Sigma, USA), pyridoxal phosphate (Sigma, USA), and normal saline for thirty min at 37 C, trichloroacetic acid (Sigma, USA) and zinc acetate (Merck, Germany) were added. Fifteen min after adding N, N-dimethyl-p-phenylenediamine sulfate (Sigma, USA) and ferric chloride (Sigma, USA), the absorbance of aliquots was measured at 660 nm by a microplate reader (26).
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10

Peat Water Purification with Zinc Acetate

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Chemicals consisting of zinc acetate (MW: 219.5 g/mol; 99%), aluminum chloride (MW: 133.3 g/mol, >98%), methyl violet (MV) (MW: 407.9 g/mol, >88%), ethylene diamine tetra acetate (EDTA) (MW: 336.2 g/mol, >98.5%), isopropanol (IPR) (MW: 60.1 g/mol, >99.5%), and H2O2 (MW: 34.0 g/mol, 30%) were purchased from Merck (Darmstadth, Germany) and were of analytical grade and utilized without any purification. Peat water was sampled from Universitas Palangka Raya Park.
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