Pekkari A, Wen X, Orrego-Hernández J, da Silva RR, Kondo S, Olsson E, Härelind H, Moth-Poulsen K. Synthesis of highly monodisperse Pd nanoparticles using a binary surfactant combination and sodium oleate as a reductant.
NANOSCALE ADVANCES 2021;
3:2481-2487. [PMID:
36134156 PMCID:
PMC9417948 DOI:
10.1039/d1na00052g]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Accepted: 02/24/2021] [Indexed: 06/16/2023]
Abstract
This study presents the synthesis of monodisperse Pd nanoparticles (NPs) stabilized by sodium oleate (NaOL) and hexadecyltrimethylammonium chloride (CTAC). The synthesis was conducted without traditional reductants and Pd-precursors are reduced by NaOL. It was confirmed that the alkyl double bond in NaOL is not the only explanation for the reduction of Pd-precursors since Pd NPs could be synthesized with CTAC and the saturated fatty acid sodium stearate (NaST). A quantitative evaluation of the reduction kinetics using UV-Vis spectroscopy shows that Pd NPs synthesized with both stabilizer combinations follow pseudo first-order reaction kinetics, where NaOL provides a faster and more effective reduction of Pd-precursors. The colloidal stabilization of the NP surface by CTAC and NaOL is confirmed by Fourier transform infrared (FTIR) and nuclear magnetic resonance (NMR) analysis.
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