Templateless, surfactantless, simple electrochemical route to rapid synthesis of diameter-controlled 3D flowerlike gold microstructure with “clean” surface

Abstract

We report for the first time a simple low-cost electrochemical route to synthesis of diameter-controlled hierarchical flowerlike gold microstructures with "clean" surfaces using gold nanoplates or nanopricks as building blocks without introducing any template or surfactant.

Nicotinamide adenine dinucleotide assisted direct electrodeposition of gold nanodendrites and its electrochemical applications

“…However, direct electrodeposition method is convenient one, since shape tailoring of Au nanostructure and integration on the solid supports can be achieved simultaneously in a single step without using any sophisticated equipment, noxious reducing, stabilizing and immobilizing agents. As for example, a wide variety of Au nanostructures such as flower [23,24], nanocube [25], nanorod [26], branched [27], nanothorns [28], pinecones [29], porous sheets [30], quasi rods [31], urchins [32] etc. have been synthesized on different conducting supports.…”

Electrochemical Detection of Hydroxylamine via Au-Pt Alloy Nanoparticle-modified Single-walled Carbon Nanotube Electrodes

“…The formation of the Au-Pt alloy nanoparticles on the SWCNT films was mainly controlled by the growth of nuclei. [30][31][32] The Au 3+ ions are first reduced on the SWCNT film, and the newly formed Au nuclei work as a catalyst by promoting the reduction of PtCl6 2-ions on the Au nuclei.…”

Wet-chemical approach to three-dimensional gold nanocorallines: Synthesis and application in surface-enhanced Raman spectroscopy

“…A variety of approaches have been developed for the shape-controlled synthesis of nanocubes [5,6], nanorods/wires [7,8], nanobelts [9], nanoplates [10,11], and nanodendrites [12]. However, there is only limited success in the morphological control of hierarchical gold crystals at the micrometer scale, although hierarchical colloidal gold crystals may find important applications in catalysis, sensor, surface-enhanced Raman spectroscopy (SERS) [13][14][15][16], and photonic crystals. For example, Sun and Yu [13] reported a photochemical approach to the preparation of two-dimensional hierarchical gold spherical pore and hollow sphere arrays.…”