Dielectric Barrier Discharge (DBD) Plasma Assisted Synthesis of Ag2O Nanomaterials and Ag2O/RuO2 Nanocomposites

Abstract

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.

Controlled Growth of Silver Oxide Nanoparticles on the Surface of Citrate Anion Intercalated Layered Double Hydroxide

“…2Ag3(citrate)(aq) + 6OH − (aq) → 3Ag2O(s) + (citrate) 3− (aq) + 3H2O(l) As expected above, the XRD patterns of SONP@LDHs in Figure 1b- [47,48]. These results suggested that a cubic crystal system with lattice parameter a = 4.81 Å was obtained for the synthesized SONP, although this is slightly larger than 4.76 Å for standard silver oxide (Ag2O), [49].…”

“…As expected above, the XRD patterns of SONP@LDHs in Figure 1 b–d show characteristic patterns for Ag 2 O; peaks at 27.7°, 32.2°, 38.0°, 46.2°, and 64.5° attributed to (110), (111), (200), (211), and (311) of Ag 2 O (JCPDS card No.76-1393) [ 47 , 48 ]. These results suggested that a cubic crystal system with lattice parameter a = 4.81 Å was obtained for the synthesized SONP, although this is slightly larger than 4.76 Å for standard silver oxide (Ag 2 O), [ 49 ].…”

Ce/Mo metal oxides synthesized with DBD plasma as efficient photocatalysts: Effect of Ce/Mo molar ratios

“…Compared with the traditional technology, the proposed surface modification method was relatively simple and economical. Ananth et al [20] synthesize Ag 2 O and Ag 2 O/RuO 2 nanocomposite materials with good crystallinity via DBD plasma. Characterization results showed superior redox properties at high temperature.…”

Carbon Nanosheets Synthesis in a Gliding Arc Reactor: On the Reaction Routes and Process Parameters

“…It also promotes temperature-sensitive applications since the temperature of heavy particles is significantly lower than electrons temperature in non-thermal plasma. In the recent years, this technology is also widely used in the synthesis of different nanomaterials including metal materials [17][18][19] and carbon nanomaterials [20][21][22]. The products with high purity and good quality can be achieved when the plasma parameters are well-controlled [23].…”