Influence of synthetic parameters on the size, structure, and stability of dodecanethiol-stabilized silver nanoparticles

On the formation of anisotropic gold nanoparticles by sputtering onto a nitrile functionalised ionic liquid

“…6 Among all employed PVD methods to prepare colloidal NPs, sputtering deposition onto ionic liquids (ILs) has several advantages since its versatility allows a good control over the size and size distribution of the NPs, 7,8 which is of great importance for special applications. [9][10][11][12][13][14] Moreover, in the case of sputtering deposition onto ILs, very stable spherical NPs are easily prepared by simply adjusting the physical parameters during the sputtering process, allowing for control of the NPs size and size distribution without the addition of extra stabilisers. 15 However, the factors that govern NPs growth in the sputtering process are still unclear.…”

Silver Nanoparticles

“…These clusters eventually lead to formation of metallic colloidal silver particles (Wiley et al 2005;Evanoff and Chumanov 2004;Merga et al 2007). It is important to use protective agents to stabilize dispersive nanoparticles during the course of metal nanoparticle preparation, and protect the nanoparticles that can be absorbed on or bind onto nanoparticle surfaces, avoiding their agglomeration (Oliveira et al 2005). The presence of surfactants comprising functionalities (e.g., thiols, amines, acids, and alcohols) for interactions with particle surfaces can stabilize particle growth, and protect particles from sedimentation, agglomeration, or losing their surface properties.…”

“…Polymeric compounds such as poly(vinyl alcohol), poly(vinylpyrrolidone), poly(ethylene glycol), poly(methacrylic acid), and polymethylmethacrylate have been reported to be effective protective agents to stabilize nanoparticles. In one study, Oliveira et al (Oliveira et al 2005) prepared dodecanethiolcapped silver nanoparticles, based on Brust procedure (Brust and Kiely 2002), based on a phase transfer of an Au 3+ complex from aqueous to organic phase in a two-phase liquidliquid system, followed by a reduction with sodium borohydride in the presence of dodecanethiol as a stabilizing agent, binding onto the nanoparticles surfaces, thereby avoiding their aggregation and making them soluble in certain solvents. They reported that small changes in synthetic factors lead to dramatic modifications in nanoparticle structure, average size, size distribution width, stability and self-assembly patterns.…”

Dual Role of a Ricinoleic Acid Derivative in the Aqueous Synthesis of Silver Nanoparticles

“…Concerning their synthesis, AgNPs may be produced via physical [7], biological [8], or chemical methods [9][10][11], being the latter more adequate in terms of cost, simplicity, and quantity of formed AgNPs. Chemical methods usually require reducing agents to convert Ag + into Ag 0 , followed by nucleation and growth that lead to metallic colloidal nanoparticles.…”