The Bi-2223 powders were fabricated by the sol-gel technique. Metal nitrates were used as starting materials, and ethylenediamineteracetic acid was used as chelating agent. The solution was heated until it turns to gel. Then the organic was removed at a temperature of 240°C, and the nitrite was removed at 500°C. The powder was calcined at different temperature, varying the dwelling time. Experimental results show that the main phase of samples after heat treatment is Bi-2212 phase.
Bi2212 superconductors with crystallization treatments at different temperatures were prepared by the Pechini sol–gel method, and their structural, thermal and transport properties were investigated.
The glucose-free and glucose-containing LaCoO3(-G), La0.9Sr0.1CoO3(-G), La0.9Ce0.1CoO3(-G) perovskite catalysts were synthesized via sol-gel method, over which the oxidation performance of high-concentration CO was investigated. The experimental results indicate that the...
Lanthanum-based perovskites, LaMO3 (M = Co, Fe, Mn, Ni, Cr, Cu, Zn) were synthesized using sol–gel method and characterised using both physical and chemical techniques.
Superconducting properties and non-isothermal crystallization kinetics of a Bi2Sr2CaCu2O8+δ (Bi2212) superconductor prepared by the Pechini sol–gel method