A mild route of synthesis metal/carbon novel core/shell nanospheres in ethanol system
Source abstract
Abstract
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.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Dendrimers and Hyperbranched Polymers · Nanomaterials for catalytic reactions · Graphene and Nanomaterials Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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