Electrochemical synthesis and properties of gold nanomaterials

The highly sensitive determination of serotonin by using gold nanoparticles (Au NPs) with a localized surface plasmon resonance (LSPR) absorption wavelength in the visible region

“…16 Au NPs that are 10-70 nm in size exhibit an LSPR band centered at 525 nm. 17,18 Many synthesis methods have been developed in an attempt to produce nano-sized Au NPs, such as irradiation methods using different irradiation sources such as microwaves, 19 gamma rays, 20 and lasers; 21 electrochemical methods; 22,23 and one-step seed-mediated methods using reducing agents such as chemical-and bio-reductants. Abdelghany et al reported an Au NP synthesis method, producing Au NPs with a size of 11-14 nm and a plasmon peak at 531 nm, utilizing g-irradiation.…”

Supported Gold Nanoparticles as Catalysts for the Oxidation of Alcohols and Alkanes

“…Heterogeneous catalysis by gold nanoparticles is now a “hot topic,” as it can have applications in several industrially and environmentally important oxidation reactions (Thompson, 1998, 1999, 2006; Bond and Thompson, 1999, 2000; Sanchez et al, 1999; Haruta and Daté, 2001; Bond, 2002; Haruta, 2002, 2003, 2004, 2005; Ma et al, 2003; Corti et al, 2005; Bond et al, 2006; Hashmi and Hutchings, 2006; Carabineiro and Thompson, 2007, 2010; Corma and Garcia, 2008; Della Pina et al, 2008a, 2012; Hashmi and Rudolph, 2008; Song et al, 2010; Della Pina and Falletta, 2011; Pradal et al, 2011; Tsukuda et al, 2011; Mallat and Baiker, 2012; Rudolph and Hashmi, 2012; Takei et al, 2012; Liu X. Y. et al, 2013; Zhang and Ding, 2013; Majdalawieh et al, 2014; Takale et al, 2014; Alex and Tiwari, 2015; Biener et al, 2015; Freakley et al, 2015; Ishida et al, 2016; Pflasterer and Hashmi, 2016; Fang et al, 2017; Scurrell, 2017; Shahzad et al, 2017; Kim, 2018; Saldan et al, 2018; Zhao and Jin, 2018). Catalytic oxidations can be classified into two types (Sokolovskii, 1990): complete (or total) oxidation , used for catalytic destruction of various toxic compounds, and selective oxidation , used for organic compounds in fine chemistry, aiming at the synthesis of desired chemical products.…”

Surface-localized plasmon resonance in a system of randomly arranged gold nanorods on a dielectric substrate

“…Randomly arranged aurum-nanorod arrays of a quasi-hexagonal shape were obtained using an electrochemical deposition method. Deposition of nanoparticles, especially Au, in a regime of pulse electrolysis enables a controllable synthesis of nanoparticles of a preset shape [37]. A combination of short pulses ( on ) with high cathode currents (і cathode ) provides a nucleation process, with further formation of nanoparticles, whereas long pauses ( off ) ensure sufficient diffusion of ions to the electrode surface.…”