Abstract
The solvent-mediated eco-friendly monodispersed Ag/Pd bimetallic nanocomposites (BNCs) having thick core and thin shell have been prepared through novel green chemical solvent reduction method. Reducing solvent, dimethyl formamide (DMF) is employed for the controlled green synthesis. Characterization of the synthesized Ag/Pd BNCs has been done by x-ray diffraction (XRD) studies, high-resolution scanning electron microscopy (HR-SEM), energy-dispersive X-ray analysis (EDX), and high-resolution transmission electron microscopy (HR-TEM) with selected area electron diffraction (SAED) pattern. The nature of the interaction of L-cysteine with Ag/Pd BNCs has been studied by using surface plasmon spectroscopy, Fourier transform-infrared spectroscopy (FT-IR), cyclic voltammetry (CV), and theoretical methods.
Highlights
Noble metallic nanocomposites are well known for their important applications in catalysis, biotechnology, bioengineering, surface-enhanced spectroscopy, textile engineering, nonlinear optical materials, water treatment, electronics, and optoelectronics [1,2,3,4,5,6,7,8,9]
The enhancement of anodic current may be Solvent-mediated eco-friendly monodispersed bimetallic Ag/Pd core-shell nanocomposites were successfully synthesized using dimethyl formamide (DMF) without any form of heating, a solvent which facilitates the formation of monodispersed bimetallic nanocomposites (BNCs)
The BNCs were characterized by techniques such as x-ray diffraction (XRD), high-resolution scanning electron microscopy (HR-SEM), energy-dispersive X-ray analysis (EDX), and high-resolution transmission electron microscopy (HR-TEM)
Summary
Noble metallic nanocomposites are well known for their important applications in catalysis, biotechnology, bioengineering, surface-enhanced spectroscopy, textile engineering, nonlinear optical materials, water treatment, electronics, and optoelectronics [1,2,3,4,5,6,7,8,9]. The bimetallic nanoparticles (BNPs) have either a core shell or different structures and the kind of this structure is decided by the method of the preparation and the control of bimetallic composition of nanoparticles. This is crucial to the improvement of essential properties of nanoparticle [11]. PtPd BNPs having core-shell structure can be synthesized in a single-step process [13] To validate this concept many reports were available for the synthesis of BNPs. Ag/Pd BNCs have attracted much interest because of their superior catalytic activity in selective hydrogenation reaction [14] and the number of methods has been developed to synthesize Ag/Pd nanoparticles as a single entity [15,16,17]. By considering the above facts, Ag/Pd core-shell nanocomposites have been synthesized and characterized; sensing and Raman scattering applications have been presented here
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