Kinetically controlled synthesis of large-scale morphology-tailored silver nanostructures at low temperature

Abstract

Ag nanostructures are widely used in catalysis, energy conversion and chemical sensing. Morphology-tailored synthesis of Ag nanostructures is critical to tune physical and chemical properties. In this study, we develop a method for synthesizing the morphology-tailored Ag nanostructures in aqueous solution at a low temperature (45 °C). With the use of AgCl nanoparticles as the precursor, the growth kinetics of Ag nanostructures can be tuned with the pH value of solution and the concentration of Pd cubes which catalyze the reaction. Ascorbic acid and cetylpyridinium chloride are used as the mild reducing agent and capping agent in aqueous solution, respectively. High-yield Ag nanocubes, nanowires, right triangular bipyramids/cubes with twinned boundaries, and decahedra are successfully produced. Our method opens up a new environmentally-friendly and economical route to synthesize large-scale and morphology-tailored Ag nanostructures, which is significant to the controllable fabrication of Ag nanostructures and fundamental understanding of the growth kinetics.

Shape Control Beyond the Seeds in Gold Nanoparticles

“…Given the seeds prepared in the CTAB are predominantly single crystal, how are the lamellar twins introduced into the particles? The twinning structure in nanoparticles has been proven to be extremely sensitive to the growth kinetics. , In our study, the post-seed crystal control is demonstrated to be a facile, reproducible method of preparing twinned gold nanocubes in relatively high yield. After the formation of single-crystal seeds, we force the seeds to grow rapidly by increasing the concentration of the reducing agent (ascorbic acid in our case) in the growth solution.…”

Recent advances in nanoflowers: compositional and structural diversification for potential applications

“…Ag particles with various morphologies have been investigated, with special emphasis on their size and structural effects on their electrical properties. [178][179][180][181] The Ag nanoparticles and their potential technological applications, such as water remediation, catalysis, and medicine have also been intensively studied owing to their chemical and physical properties, which are different from those of bulk systems. [182][183][184][185][186] At present, various Ag nanomaterials have been studied, such as, nanowires, 187 nanocubes, 188 nanoclusters, 189 nanoowers, 190 and so on.…”

Controlled synthesis of octahedral jarosite

“…1. Introduction: Morphology-controlled synthesis is an important research branch because small changes in the morphology of particle can result in spectacular influences on the physical and chemical properties [1][2][3]. In recent years, great efforts were made to controlled-synthesis of micro/nanocrystals with different morphologies [4][5][6].…”