State of the Art of the Bi- and Trimetallic Nanoparticles on the Basis of Gold and Iron

Abstract

Recently reported patents and experimental articles on the synthesis, properties, and main applications of core-shell nanoparticles, containing iron or its oxides and gold, as well as trimetallic systems on their basis, are reviewed. These nanostructures were obtained by a series of methods, including reduction in reverse micelles, decomposition of organometallic compounds, electron-beam, laser and gamma-irradiation, sonolysis and electrochemical methods. (Fe or Fe(X)O(y))/Au nanoparticles are subject to be functionalized with organic moieties, may expand their main applications, which consist of catalysis, biological and biomedical uses.

Supported Gold Nanoparticles as Catalysts for the Oxidation of Alcohols and Alkanes

“…Gold-based bimetallic catalysts showed great potential for many important chemical transformation reactions, owing to their good activity and high selectivity under relatively mild conditions, in reactions such as selective oxidation, selective hydrogenation, C-C coupling and photocatalysis, as recently reviewed (Zhao and Jin, 2018). There are many cases in the literature of bimetallic gold catalysts prepared by several techniques, as shown in several recent reviews (Kharisov et al, 2009; Li B. D. et al, 2009; Shah et al, 2012; Zhao et al, 2013; Hutchings, 2014; Freakley et al, 2015; Villa et al, 2015c; Alshammari et al, 2016; Louis, 2016; Priecel et al, 2016; Zhang L. et al, 2016).…”

Facile growth of monocrystalline gold–iron nanocrystals by polymer nanoemulsion

“…Of vast awareness, gold-iron (AuFe) intermetallic or alloy nanocrystals and other relevant forms are elegantly nanostructured candidates because of their marvelous structures and properties [1][2][3]. Gold is a precious, versatile element and has valuable, diverse applications in the fields of catalysis, electronics, and optoelectronics [3][4][5][6].…”

“…Ascribing to its marvelous magnetic properties and readiness to be converted to bio-friendly oxides, the element iron is an excellent candidate for a wide range of applications such as magnetic recording, magnetic seals, printing, magnetic resonance imaging, drug delivery, biodetection, and cell tagging and separation [7][8][9][10]. Appreciably, amalgamation of Au and Fe into one AuFe alloy or intermetallic nanostructure can be more fascinating than the corresponding monoelements, offering potential functions in both magnetic and optical properties in addition to the biological compatibility and easy linkage to biomolecules endowed by the constituents [1,2,[11][12][13]. In such nanostructures, particle size and distribution, shape, composition, crystallinity, microstructure, surface properties, and aqueous solubility are vital.…”

“…In such nanostructures, particle size and distribution, shape, composition, crystallinity, microstructure, surface properties, and aqueous solubility are vital. Facile synthesis, fine tuning of the surface properties, and precise control of the particle size and distribution are the intensive efforts of current research programs [1,[11][12][13].…”

Three-Dimensional Modeling of Embedded Nanoparticles Formation by Ion Beam Implantation

“…That causes a broad spatial and size distribution of nanoparticles reducing the possible practical applications. 18 While many studies have been carried out to understand the properties and formation mechanism in chemical synthesis, 19 the nucleation and growth of ion beam synthesized nanoparticles is still unclear. Understanding the synthesis of such nanostructures and formation mechanisms is essential to better control and optimize their properties through ion-implantation technology.…”