Study on the preparation of ascorbic acid reduced ultrafine copper powders in the presence of different protectants and the properties of copper powders based on methionine protection.

ABSTRACT: High-purity, monodisperse, and low-oxygen submicron copper powder particles with particle sizes in the range of 100-600 nm were synthesized under alkaline conditions using ascorbic acid (C₆H₈O₆) as a reductant and copper chloride (CuCl₂·2H₂O) as a copper source. The redox potential of the Cu-Cl-H₂O system was obtained by calculations and plotted on pH-E diagrams, and a one-step secondary reduction process (Cu(ii) → CuCl(i) → Cu₂O(i) → Cu(0)) was proposed to slow down the reaction rate. The commonalities and differences in the nucleation and growth process of copper powders under methionine (Met), hexadecyl trimethyl ammonium bromide (CTAB), and sodium citrate dihydrate (SSC) as protectants and without the a

SUBMITTER: Ke X 

PROVIDER: S-EPMC10863707 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature