Synthesis of ZnO-Ag Nanocomposites trough Ultrasonication-Microwave Combination Method with Clove Leaf Oil

Abstract

ZnO and Ag nanoparticle have known their antibacterial activity especially their use in medical materials. In this study, ZnO-Ag Nanocomposite was synthesized by ultrasonication-microwave combination method with variation of reaction time using clove oil as their bioreductor. ZnO-Ag was prepared from ZnO Acetate as a source of ZnO and AgNO3 as a source of Ag. The crystallinity structure, average particle size, morphology, and composition of ZnO-Ag was characterized by X-Ray Diffraction, Scanning Electron Microscope, and Energy Dispersive X-ray Spectroscopy. X-ray diffraction pattern indicates that reaction time of 30 minutes have optimal synthesis results. The nanocomposite obtained consists of 43.2 % Ag nanoparticle, 17.5 % hexagonal Zincite, 14.6% Zinc Oxide, 14.5% wulfingite (deuterated), and 10.2% Zn(OH)2 with average particle size of 28.29 nm according to Scherer’s equation. The result of scanning electron microscope showed that ZnO has an fiber shape and Ag has a round shape.

Ultra-fast green microwave assisted synthesis of NaFePO4-C nanocomposites for sodium ion batteries and supercapacitors

“…The best discharge capacity obtained is 108.4 mA h g −1 for Fe(60) sample Vs Na/Na + , which is characterized by the presence of the highest amount of crystalline maricite phase (according to XRD patterns) and the smallest particle size (according to PSA). The order of capacity was Fe(60) > Fe(80) > Fe(100) > Fe (30). For the sample Fe (30), the low capacity may refers to the presence of a large amount of unreacted inactive raw materials.…”

“…The order of capacity was Fe(60) > Fe(80) > Fe(100) > Fe (30). For the sample Fe (30), the low capacity may refers to the presence of a large amount of unreacted inactive raw materials. The decrease in capacity with increasing microwave time above 60 s may refer to the decrease in particle size and to the increase in surface area (Table 3).…”

“…5c. The R CT values indicate that the sodium ion diffusivity inside the cathode matrix was in the order of Fe(60) > Fe(80) > Fe(100) > Fe (30). Sodium ion diffusion coefficients (D Na ) are calculated from the low frequency region according to equation S2 (Supplementary).…”