Synthesis of Highly Uniform Shape Copper Particles and Crystals Using Propylene Glycol
The work under taken here was to synthesis uniform shape copper particles and crystals using propylene glycol as a polyol and PVP as surfactant and to study the mechanism thereof. It has been found that propylene glycol is a promising reducing agent to prepare metallic copper particles (or crystals) in nano or micro scale with highly uniform shape which varies from spherical at critical temperature of ∼170 °C to octahedron at higher or lower temperatures for specific reaction time after which different shapes can be produced. Polyol process composes of two stages of particles (or crystals) development, each stage consists of nucleation and growth steps, and this provides at least two different shapes in the same reaction depending on reaction temperature, PVP concentration, and the stage at which the reaction hanged up, while their size depends on the reaction time.
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Document Type: Research Article
Publication date: March 1, 2009
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