Ananth Antony, Mok Young Sun
Plasma Applications Laboratory, Department of Chemical and Biological Engineering, Jeju National University, Jeju 690-756, Korea.
Nanomaterials (Basel). 2016 Feb 26;6(3):42. doi: 10.3390/nano6030042.
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.
氧化银、氧化钌纳米材料及其复合材料被广泛应用于各种领域。等离子体介导合成是制备具有所需物理化学性质纳米材料的新兴技术之一。在本研究中，采用介质阻挡放电（DBD）等离子体合成Ag₂O和Ag₂O/RuO₂纳米复合材料。所制备的材料显示出良好的结晶性。Ag₂O的表面形态呈现出“花环状”特征，并且在不同的NaOH浓度下转变为“花状”和“叶状”。Ag₂O/RuO₂复合材料显示出聚集的Ag₂O和片状RuO₂的混合结构。提出了大气压等离子体下材料生长的机制。使用傅里叶变换红外光谱（FTIR）和X射线光电子能谱（XPS）进行化学分析。热重分析（TGA）显示了热分解行为和氧释放模式。
