Dielectric Barrier Discharge (DBD) Plasma Assisted Synthesis of Ag₂O Nanomaterials and Ag₂O/RuO₂ Nanocomposites.
Silver oxide, ruthenium oxide nanomaterials and its composites are widely used in a variety of applications. Plasma-mediated synthesis is one of the emerging technologies to prepare nanomaterials with desired physicochemical properties. In this study, dielectric barrier discharge (DBD) plasma was used to synthesize Ag₂O and Ag₂O/RuO₂ nanocomposite materials. The prepared materials showed good crystallinity. The surface morphology of the Ag₂O exhibited "garland-like" features, and it changed to "flower-like" and "leaf-like" at different NaOH concentrations. The Ag₂O/RuO₂ composite showed mixed structures of aggregated Ag₂O and sheet-like RuO₂. Mechanisms governing the material's growth under atmospheric pressure plasma were proposed. Chemical analysis was performed using Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS). Thermogravimetric analysis (TGA) showed the thermal decomposition behavior and the oxygen release pattern.
Plasma Applications Laboratory, Department of Chemical and Biological Engineering, Jeju National University, Jeju 690-756, Korea. sebastianananth@gmail.com.
Antony
A
Ananth
Plasma Applications Laboratory, Department of Chemical and Biological Engineering, Jeju National University, Jeju 690-756, Korea. smokie@jejunu.ac.kr.
Young Sun
YS
Mok
DBD; atmospheric pressure plasma; nanocomposite; nanomaterials; ruthenium oxide; silver oxide