Application of 16961-25-4. The protonation of heteroatoms in aromatic heterocycles can be divided into two categories: lone pairs of electrons are in the aromatic ring conjugated system; and lone pairs of electrons do not participate. Compound: Hydrogen tetrachloroaurate(III) trihydrate, is researched, Molecular AuCl4H7O3, CAS is 16961-25-4, about Synthesis of ultra-small gold nanoparticles by polyphenol extracted from Salvia officinalis and efficiency for catalytic reduction of p-nitrophenol and methylene blue. Author is Oueslati, Mohamed Habib; Ben Tahar, Lotfi; Abdel Halim Harrath.
The present research work reports an eco-friendly route for preparing gold nanoparticles (AuNPs) with high catalytic activity using polyphenol extracted from salvia officinalis. In both alk. (pH ∼ 11) and acidic media (pH ∼ 5), the polyphenol induced rapid reduction of the Au (III) salt and lead to the formation of highly monodisperse and spherical small (S) and larger (L) AuNPs, resp. The average particle size was found to be ∼ 6 nm for S and ∼ 27 nm for L AuNPs, resp. FT-IR revealed that polyphenol species are capped onto the nanoparticles surface favorizing a high aqueous colloidal stability of the AuNPs in a wide pH range. In addition, the produced AuNPs exhibited significant size-dependent degradation rate of p-nitrophenol (p-NP) and methylene blue (MB) to p-aminophenol (p-AP) and leucomethylene blue (LMB), resp.
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Reference:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem