Gold nanoparticles were synthesized through reduction. Hydrogen tetrachloroaurate (HAuCl4, Sigma‐Aldrich, St Louis, MO) was used as a gold precursor, and trisodium citrate was used as a reducing agent. Briefly, 0.5 mM hydrogen tetrachloroaurate dissolved in 300 mL distilled water followed by boiling for 10 min. Note that 30 mL of 38.8 mM trisodium citrate ((HOC(COONa)(CH2COONa)2, Sigma‐Aldrich, St Louis, MO) solution was added into the gold precursor solution to allow the color change from light yellow to colorless. Then, the solution started darkening, and the reaction was terminated when the color of solution became red. This gold particles solution was ready to use after cool down and storage in 4°C. Gold particles’ size was determined by the Zeta‐sizer (Malvern Zeta‐sizer Nano ZS90) and transmission electron microscopy (TEM, JEOL JEM‐2100F CS STEM). Figure S3 presents particle size analysis. The particle size measured by the Zeta‐sizer averaged 18.71 nm, which consistent to that observed in TEM. In addition, the numerical value of PDI was 0.41 resulting in uniform particle size distribution.
Hoc coona ch2coona 2
Manufactured by Merck Group
HOC(COONa)(CH2COONa)2 is a chemical compound used as a laboratory reagent. It serves as a buffer solution, maintaining a specific pH range in chemical reactions and analyses. The exact intended use or applications of this product are not provided in this unbiased, factual description.
Automatically generated - may contain errors
Lab products found in correlation
Jem 2100f cs stem, by JEOL (1 mentions)
Zetasizer nano zs90, by JEOL (1 mentions)
Hydrogen tetrachloroaurate haucl4, by Merck Group (1 mentions)
Mohr s salt, by Merck Group (1 mentions)
Sodium citrate, by Merck Group (1 mentions)
Sodium hydroxide (naoh), by Merck Group (1 mentions)
Sulfuric acid, by Merck Group (1 mentions)
Potassium bromide, by Merck Group (1 mentions)
2 protocols using hoc coona ch2coona 2
1
Synthesis of Gold Nanoparticles
2
Phosphoric Acid and Clay Characterization
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This study incorporates three distinct groups of material, specifically:
Concentrated wet phosphoric acid manufactured by the Tunisian Chemical Group situated in Gabes, south of Tunisia. The blackish green colouration (Figure 1 ) of this acid (containing 52% P2O5) is attributed to its elevated concentration of organic matter.
The raw clay selected was mined from the Douiret, Tataouine deposit, which is one of the major clay reserves in Tunisia [29 (link)].
Analytical-grade chemical reagents are utilised without further purification, and distilled water is employed to prepare different solutions. Sodium hydroxide (NaOH, purity > 99%), sulfuric acid (H2SO4 98% wt) and potassium bromide (KBr, purity ≥ 99%) were sourced from Merck. Potassium dichromate (K2Cr2O7, purity > 99%) was purchased from Labokem. Mohr’s salt ((NH4)2Fe(SO4)2.6H2O, purity = 99%) and sodium citrate (HOC(COONa)(CH2COONa)2 2H2O, purity = 99%) were supplied by Sigma-Aldrich. Bromocresol green and phenolphthalein, coloured indicators used to measure P2O5, were obtained from Atlanticlabo.
Concentrated wet phosphoric acid manufactured by the Tunisian Chemical Group situated in Gabes, south of Tunisia. The blackish green colouration (
The raw clay selected was mined from the Douiret, Tataouine deposit, which is one of the major clay reserves in Tunisia [29 (link)].
Analytical-grade chemical reagents are utilised without further purification, and distilled water is employed to prepare different solutions. Sodium hydroxide (NaOH, purity > 99%), sulfuric acid (H2SO4 98% wt) and potassium bromide (KBr, purity ≥ 99%) were sourced from Merck. Potassium dichromate (K2Cr2O7, purity > 99%) was purchased from Labokem. Mohr’s salt ((NH4)2Fe(SO4)2.6H2O, purity = 99%) and sodium citrate (HOC(COONa)(CH2COONa)2 2H2O, purity = 99%) were supplied by Sigma-Aldrich. Bromocresol green and phenolphthalein, coloured indicators used to measure P2O5, were obtained from Atlanticlabo.
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