Abstract
In biomedical, toxicological, and optoelectronic applications, the size of nanoparticles is one of the decisive factors. Therefore, synthesis of nanoparticles with controlled sizes is required. The current methods for synthesis of larger gold nanoparticles (GNPs, ~200 nm) are complex and tedious, producing nanoparticles with a lower yield and more irregular shapes. Using ferrocene as a primary reducing agent and stabilizer, sodium citrate as a dispersant, and sodium borohydride as an accessory reducing agent, GNPs of 200 nm were synthesized in a one pot reaction. Besides the roles of reducing agent and GNP stabilizer, ferrocene also served a role of quantitative marker for ligand loading, allowing an accurate determinate of surface ligands.
Highlights
The control of nanoparticle size in nanomaterial synthesis has been the focus of continuous efforts in the past decades
Gold nanoparticles (GNPs) of various sizes were in high demand due to their size-dependent physicochemical and biological properties
We explored the use of ferrocene compound asasa a novel reducing agent a one-pot synthesis of gold nanoparticles (GNPs) a diameter of nm
Summary
The control of nanoparticle size in nanomaterial synthesis has been the focus of continuous efforts in the past decades. Gold nanoparticles (GNPs) of various sizes were in high demand due to their size-dependent physicochemical and biological properties They can be utilized in warious ways in photonics, catalysis, electronics, and biomedicine according to sizes. The most popular GNP synthesis method is the Turkevich-Frens method [1] By this method, sodium citrate was used to reduce chloroauric acid to prepare aqueous solutions of GNPs of 12 to 70 nm as monodispersed spherical particles. Sodium citrate was used to reduce chloroauric acid to prepare aqueous solutions of GNPs of 12 to 70 nm as monodispersed spherical particles Problems such as poor particle monodispersity and irregular shapes were often encountered when synthesizing larger GNPs with this method [2,3,4]. This greatly limits the exploration and utilization of large GNPs
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