ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Solution-phase polyol synthesis and coadsorption MD calculations from faceted platinum nanoparticles: NOVEL NPs‒polymer morphology controlling

Ali Reza Akbarzadeh, Iraj Mesgarzadeh, and Rahime Eshaghi Malekshah

Department of Chemistry, Iran University of Science and Technology, Tehran, Iran

E-mail: a_akbarzadeh@iust.ac.ir

Received: 14 January 2022  Accepted: 9 May 2022

Abstract:

In this study, the polyol reduction process is applied to synthesize the platinum nanoparticles using polyethylene glycol (PEG) as a complexing/reducing agent and polyvinylpyrrolidone (PVP) as a stabilizer. The platinum nanoparticles were characterized by TEM, XRD, EDX, FT-IR, and UV–Vis spectroscopy indicating the formation of polydisperse faceted Pt nanoparticles. By binding PVP to (200) facets of platinum nanoparticles compared with (111) facets, it played a vital role in controlling the morphology of platinum nanocrystallines. Meanwhile, the (111) surfaces were used for reactions. Due to their nanocrystalline nature, the so-obtained platinum nanoparticles displayed different faceted shapes, including faceted and quasi-spherical morphologies. The molecular dynamics simulations were applied for coadsorption of PEG and PVP on PtCl₄ (111), and K₂PtCl₆ (111) surfaces in Material Studio 2017 using the Forcite module. The results showed that coadsorption of PEG and PVP on PtCl₄ (111) was higher than coadsorption of PEG and PVP on K₂PtCl₆ (111).

Graphical abstract

Keywords: Polyol synthesis; Colloidal platinum nanoparticles; Anisotropic morphologies; Faceted particles; Electron microscopy; Molecular dynamics simulations

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-022-02272-3

Chemical Papers 76 (9) 5761–5774 (2022)