EN
Structural analysis of pure PtCu3 nanoparticles synthesized by modified Polyol process
Abstract
The development of effective multi-functional Pt-based nanoparticles (NPs) with enhanced activity, stability, and reduced cost for advanced applications still remains a challenge. In this study, Pt(acac)2 and Cu(OAc)2 metal precursors were reduced to form Pt-Cu NPs at 140 °C in ethylene glycol and sodium borohydride that is a secondary reducing agent in the modified polyol method. The x-ray diffraction (XRD) and Rietveld refinement analyses confirmed the face-centered cubic PtCu3 structure with the space groups of Fm3 ̅m and a lattice constant of a=b=c=3.6829 Å. The average crystal size was found to be 2.76 nm by Scherrer's formula. Scanning electron microscopy (SEM) images confirm the formation of monodisperse PtCu3 NPs with an average size of 8.04 nm within a narrow range of 5-13 nm. While energy-dispersive x-ray spectroscopy (EDS) analysis confirmed that the composition is formed of 26% Pt and 74% Cu atoms and XRD and EDS analyses were confirmed impurity, by-products, and oxidation free NPs formation.
Keywords
References
- [1] Wang X.X., Swihart M.T., Wu G., Achievements, challenges and perspectives on cathode catalysts in proton exchange membrane fuel cells for transportation, Nat. Catal., 2(7) (2019) 578-589.
- [2] Pivovar B., Catalysts for fuel cell transportation and hydrogen related uses, Nat. Catal., 2(7) (2019) 562-565.
- [3] Colic M., Stamenkovic D., Anzel I., Lojen G., Rudolf R., The influence of the microstructure of high noble gold-platinum dental alloys on their corrosion and biocompatibility in vitro, Gold Bull., 42(1) (2009) 34-47.
- [4] Ben Saber N., Mezni A., Alrooqi A., Altalhi T., A review of ternary nanostructures based noble metal/semiconductor for environmental and renewable energy applications, J. Mater. Res. Technol., 9(6) (2020) 15233-15262.
- [5] Xia B.Y., Wu H.B., Yan Y., Lou X.W., Wang X., Ultrathin and Ultralong Single-Crystal Platinum Nanowire Assemblies with Highly Stable Electrocatalytic Activity, J. Am. Chem. Soc., 135(25) (2013) 9480-9485.
- [6] Wang J., Barriers of scaling-up fuel cells: Cost, durability and reliability, Energy, 80 (2015) 509-521.
- [7] Chen Y., Zhang G., Ma J., Zhou Y., Tang Y., Lu T., Electro-oxidation of methanol at the different carbon materials supported Pt nano-particles, Int. J. Hydrogen Energy, 35(19) (2010) 10109-10117.
- [8] Zaleska-Medynska A., Marchelek M., Diak M., Grabowska E., Noble metal-based bimetallic nanoparticles: the effect of the structure on the optical, catalytic and photocatalytic properties, Adv. Colloid Interface Sci., 229 (2016) 80-107.
Details
Primary Language
English
Subjects
Classical Physics (Other)
Journal Section
Research Article
Authors
Doğan Kaya
*
0000-0002-6313-7501
Türkiye
Publication Date
September 24, 2021
Submission Date
December 13, 2020
Acceptance Date
June 24, 2021
Published in Issue
Year 1970 Volume: 42 Number: 3