Size-Controllable Synthesis of Monodispersed SnO₂ Nanoparticles and Application in Electrocatalysts

Abstract

Size-controllable tin oxide nanoparticles are prepared by heating ethylene glycol solutions containing SnCl 2 at atmospheric pressure. The particles were characterized by means of transmission electron microscopic (TEM), X-ray diffraction (XRD) studies. TEM micrographs show that the obtained material are spherical nanoparticles, the size and size distribution of which depends on the initial experimental conditions of pH value, reaction time, water concentration, and tin precursor concentration. The XRD pattern result shows that the obtained powder is SnO 2 with tetragonal crystalline structure. On the basis of UV/vis and FTIR characterization, the formation mechanism of SnO 2 nanoparticles is deduced. Moreover, the SnO 2 nanoparticles were employed to synthesize carbon-supported PtSnO 2 catalyst, and it exhibits surprisingly high promoting catalytic activity for ethanol electrooxidation.

Synthesis and Characterization of Nanocomposites Tin Oxide-Graphene Doping Pd Using Polyol Method

“…There are several strategies to incorporate graphene to the metal oxide, such as polyol, hydrothermal and spray pyrolysis [10,[23][24][25]. In this study, polyol method has selected due to good thermal and mechanical stability, good solvent resistance and high flexibility for surface modification [23,[26][27]. The main purpose of this study is to fabricate SnO2 graphene composite nanostructure and doped with Palladium (Pd) for the potential application of the gas sensor.…”

Synthesis and characterization of indium tin oxide nanoparticles via reflux method

“…Therefore, due to absence of electrical expulsion between particles, they gather together and form bigger particles. The particles size of tin decreases with increasing pH from 6 to 9, then it stays constant without any changes [21]. In the range of pH " 6 to 9, due to higher hydrolysis speed of tin than of indium [22], the speed of decreasing the size of tin is higher than the speed of increasing indium hydroxide size.…”

Rapid synthesis of nanocrystalline SnO2 by a microwave-assisted combustion method

“…For such applications, nanosize particles are required. Recent research shows that the properties of SnO 2 depend greatly on product's crystallite size and specific surface area [3]. Compared with bulk SnO 2 , nanosize SnO 2 has especially good properties and outstanding advantages of low operating temperature and high sensitivity for gas-sensing applications [4].…”