Magnetochemical Investigation on Thermal Decomposition of Silver Oxide

Abstract

(1) It was found, by means of the thermal and magnetic balance, that the decomposition temperatures of silver oxide and of silver oxide containing silver carbonate are 354 and 372°C, respectively. (2) The magnetic susceptibilities of metallic silver obtained by the decomposition and of silver oxide are −0.21×10−6and −0.48×10−6 units per gram at room temperature, respectively. Metallic silver is normally diamagnetic from room temperature to 1100°C. (3) Under the present experimental conditions, the rate of decomposition is represented by the equation dx⁄dt=aitbi for the whole course of the decomposition, where i is the subscript for each stage, and generally both ai and bi depend on the temperature. It is considered that nuclei are created at intervals as the reaction proceeds.

Silver oxide decorated urchin-like microporous organic polymer composites as versatile antibacterial organic coating materials

“…As documented in previous studies, the decomposition of Ag 2 O NPs occurs at temperatures above 300 °C. 60,61 This factor could be responsible for the faster decomposition of Ag 2 O@UMOPs compared to the UMOPs. Above 600 °C, the weight loss curve of UMOPs showed a gentle trend, while the weight of Ag 2 O@UMOPs continued to decrease because of the progressive liberation of O 2 absorbed by the polymeric framework.…”

Instrumentation and Some Analytical Applications of Magnetic Susceptibility

“…This paper lists several references on servobalances. Special adaptations are described for measurements at very high temperatures (175,179).…”

“…Thermal Decomposition of Silver Oxide. Tobisawa (175) describes a magnetic technique for studying the susceptibilities at extremely high temperatures (~T200°C.). He studied the rate of decomposition of silver oxide represented by dn dt = adli where the constants a,-and hi depend on the temperature.…”