Bimetallic Nanoparticles: Enhanced Magnetic and Optical Properties for Emerging Biological Applications

Abstract

Metal nanoparticles are extensively studied due to their unique chemical and physical properties, which differ from the properties of their respective bulk materials. Likewise, the properties of heterogeneous bimetallic structures are far more attractive than those of single-component nanoparticles. For example, the incorporation of a second metal into a nanoparticle structure influences and can potentially enhance the optical/plasmonic and magnetic properties of the material. This review focuses on the enhanced optical/plasmonic and magnetic properties offered by bimetallic nanoparticles and their corresponding impact on biological applications. In this review, we summarize the predominant structures of bimetallic nanoparticles, outline their synthesis methods, and highlight their use in biological applications, both diagnostic and therapeutic, which are dictated by their various optical/plasmonic and magnetic properties.

Bactericidal Antibacterial Mechanism of Plant Synthesized Silver, Gold and Bimetallic Nanoparticles

“…In addition, bacteria rarely develop resistance to them due to the multifaceted antibacterial mechanism of NPs [7]. Metal nanoparticles (MNPs) are significant nanomaterials with excellent physiochemical, photothermal, magnetic and electrical properties [8][9][10][11]. They have been used as potent antimicrobial agents for bacterial infection detection, diagnosis and treatment [10][11][12][13].…”

Essential Oils and Mono/bi/tri-Metallic Nanocomposites as Alternative Sources of Antimicrobial Agents to Combat Multidrug-Resistant Pathogenic Microorganisms: An Overview

“…It has both health and environmental applications, which includes effective drug delivery, cancer treatment, food packaging, harvesting solar energy, and water purification, and reduces the use of industrial chemicals, thereby making the environment healthier and safer [17]. Over the past few decades, many metal and metal oxide nanoparticles (NPs) have been studied extensively due to their distinctive properties, and their potential applications in various fields such as biomedical, biosensors, catalysis, electronics, optoelectronics, information storage, and surface-enhanced Raman spectroscopy (SERS) [18]. As the name indicates, monometallic NPs contain a single metal, which can be prepared either by biological or chemical methods whereas bi-and tri-metallic NPs are formed by the combination of two or more metals, which exhibit fascinating properties.…”

Synthesis and microstructure investigation of heterogeneous metal‐plasma polymer Ag/HMDSO nanoparticles

“…Enhanced performance, which makes heterogeneous nanoparticles attractive for a variety of applications that span from catalysis, optoelectronic devices, and energy harvesting to biodetection or biomedical applications, [1][2][3][4] triggered off the development of various strategies that allow their controllable synthesis. Among them, increasing attention is attracted by gas-phase condensation techniques that utilize magnetron-based gas aggregation sources (GASs).…”

“…The interest in this kind of nanomaterials is motivated by the fact that they may possess unique chemical‐, physical‐, or bio‐related properties resulting from the combination of properties of their individual counterparts as well as from mutual interactions of different constituent materials. Enhanced performance, which makes heterogeneous nanoparticles attractive for a variety of applications that span from catalysis, optoelectronic devices, and energy harvesting to biodetection or biomedical applications, 1–4 triggered off the development of various strategies that allow their controllable synthesis. Among them, increasing attention is attracted by gas‐phase condensation techniques that utilize magnetron‐based gas aggregation sources (GASs).…”