Facile Synthesis, Morphologies and Gas Sensing Properties of CuO Powder

【摘要】 CuO powder with microspheres, submicron sheets had been synthesized only from CuSO₄ and Na₂CO₃ aqueous solutions by a facile route. Significant effects of initial droplet size of CuSO₄ aqueous solution were observed on particle size, morphology and gas sensitivity of CuO. The morphologies of CuO powder varied from microspheres to submicron sheets with the introduction method of CuSO₄ to Na₂CO₃ aqueous solutions. Based on the characterized structure and morphology, a possible formation mechanism of CuO had been proposed. High gas sensitivity to ethanol was obtained for the CuO microspheres synthesized by spray method, which exhibited the response sensitivity of 3.25 to ethanol with the concentration of 300 ppm at 250 ℃. It suggests that the facile route is promising to the batch synthesis of CuO powder with good gas sensing properties.更多还原

【Abstract】 CuO powder with microspheres, submicron sheets had been synthesized only from CuSO₄ and Na₂CO₃ aqueous solutions by a facile route. Significant effects of initial droplet size of CuSO₄ aqueous solution were observed on particle size, morphology and gas sensitivity of CuO. The morphologies of CuO powder varied from microspheres to submicron sheets with the introduction method of CuSO₄ to Na₂CO₃ aqueous solutions. Based on the characterized structure and morphology, a possible formation mechanism of CuO had been proposed. High gas sensitivity to ethanol was obtained for the CuO microspheres synthesized by spray method, which exhibited the response sensitivity of 3.25 to ethanol with the concentration of 300 ppm at 250 ℃. It suggests that the facile route is promising to the batch synthesis of CuO powder with good gas sensing properties.更多还原