Synthesis of nickel nanoparticles by hydrazine reduction: mechanistic study and continuous flow synthesis

Metal–polymer nanocomposites based on Ni nanoparticles and polythiophene obtained by electrochemical method

“…After this, the resulting solution was heated up to 100-130 • C with constant stirring for 2 h. Then 1 M of hydrazine hydrate and 0.015 M NaOH solutions were added to the solution (without magnetic stirring). The absence of magnetic stirring minimized the problems related to the agglomeration associated with the superparamagnetic nature of nickel nanoparticles [18]. The initially green solution turned black, indicating the formation of Ni metal particles.…”

“…2b). The sphericity of the Ni nanoparticles can be determined by the higher temperature during their synthesis [18]. Supposedly, the formation of ethylene glycol functional groups on the nanoparticle surface and their encapsulation in PVP resulted in isolated nanoparticles and their uniform distribution [18].…”

“…The sphericity of the Ni nanoparticles can be determined by the higher temperature during their synthesis [18]. Supposedly, the formation of ethylene glycol functional groups on the nanoparticle surface and their encapsulation in PVP resulted in isolated nanoparticles and their uniform distribution [18]. When PVP was added to the reaction mixture, the polymer attached to the surface of growing particles, consequently steric or electrostatic repulsions prevented the further growth of the nanoparticles, leading to the reduction of the particle size.…”

From Nanotechnology to Nanoengineering

“…Chemical synthesis of nanostructures using micro-reactors has offered unique capabilities in the advancement of nanotechnology (Yen et al 2005;Song et al 2006;Karnik et al 2008;Duraiswamy and Khan 2009;Marre et al 2012;Jin et al 2010;Lazarus et al 2010;Zhao et al 2011;Ishizaka et al 2012;Eluri and Paul 2012). Micro-reactors have indicted the potential to overcome some of the technical challenges in nanomaterial production.…”

Continuous-Flow Synthesis of Ni(0) Nanoparticles Using a Cone Channel Nozzle or a Micro Coaxial-Injection Mixer

“…If the particles are formed inside a microfluidic device, e.g., in a micromixer by a so-called in chamber mixing procedure, blockage by precipitation can occur. This is commonly avoided by using highly diluted reactant solutions or simple T-pieces as mixers which have no micro-structured interior where fouling could take place [23]. Advanced solutions use split and combine mixing principles to reduce fouling and enable higher concentration.…”