A mild route of synthesis metal/carbon novel core/shell nanospheres in ethanol system

• Published in: Journal of nanoparticle research : an interdisciplinary forum for nanoscale science and technology Vol. 15; no. 7; pp. 1 - 9
• Main Authors: Wang, Haibo, Jin, Quan, Yang, Lufeng, Liu, Yingliang
• Format: Journal Article
• Language: English
• Published: Dordrecht Springer Netherlands 01.07.2013; Springer; Springer Nature B.V
• Subjects: Characterization and Evaluation of Materials; Chemistry and Materials Science; Condensed matter: structure, mechanical and thermal properties; Cross-disciplinary physics: materials science; rheology; Dosage; Ethanol; Ethyl alcohol; Exact sciences and technology; Formaldehyde; Fullerenes and related materials; diamonds, graphite; Inorganic Chemistry; Lasers; Low temperature; Low-dimensional structures (superlattices, quantum well structures, multilayers): structure, and nonelectronic properties; Materials Science; Metals; Nanomaterials; Nanoparticles; Nanospheres; Nanostructure; Nanotechnology; Optical Devices; Optics; Photonics; Physical Chemistry; Physics; Research Paper; Shells; Specific materials; Surfaces and interfaces; thin films and whiskers (structure and nonelectronic properties); Synthesis; Core/shell structure; Au@C; One-pot method; Pd@C; Synthesis; Ag@C; Fourier transform spectroscopy; Ethanol; Core shell structure; Palladium; XRD; Metal particle; Dispersive spectrometry; Formaldehyde; Benzoic acid derivatives; Transmission electron microscopy; Lysine; Morphology; Fullerenes; Reaction mechanism; Nanosphere
• DOI: 10.1007/s11051-013-1803-2
• ISSN: 1388-0764

Precious metals core/shell nanospheres were synthesized via a one-pot method, we investigate a new route using 2,4-dihydroxybenzoic acid and formaldehyde served as carbonaceous shell, ethanol reducing metal particles served as core and l -lysine initiating to obtain core/shell structures. This synthesis was reflux in ethanol system at a low temperature of 80°. Uniform size, homogeneous morphology, and high purity of the product were synthesized by this method. Moreover, shell thickness are tunable when we change the dosage of metal and PVP ( l -lysine). The core/shell nanoparticles have the core diameter of 8–12 nm and the sphere shell diameter of 100–140 nm. Ag@C, Au@C, and Pd@C were prepared via the same method. The different dosage of PVP and sequence of formaldehyde are investigated in order to clarify the reaction mechanism. Based on this, we give a reasonable explanation to the universal method. TEM, XRD, FTIR, UV-spectra, and EDS (HRTEM) were used to characterize the core/shell nanostructures.