Ultrafine bismuth oxide powders of high purity were prepared by electrochemical method from an aqueous solution of NaOH in the presence of dispersant.The formation mechanism of Bi2O3 powders was suggested.The effects ...Ultrafine bismuth oxide powders of high purity were prepared by electrochemical method from an aqueous solution of NaOH in the presence of dispersant.The formation mechanism of Bi2O3 powders was suggested.The effects of electrolyte,dispersant and calcining temperature were studied.Its compostion,size and microstructure were determined by IR,XRD and TEM.The results show that the sample is spherodic and dispersed evenly.Its average size is 30～40nm.The electrochemical dissolution of metal anode may be recommended as a promising technique for the synthesis of ultrafine bismuth oxide powders.展开更多
文摘Ultrafine bismuth oxide powders of high purity were prepared by electrochemical method from an aqueous solution of NaOH in the presence of dispersant.The formation mechanism of Bi2O3 powders was suggested.The effects of electrolyte,dispersant and calcining temperature were studied.Its compostion,size and microstructure were determined by IR,XRD and TEM.The results show that the sample is spherodic and dispersed evenly.Its average size is 30～40nm.The electrochemical dissolution of metal anode may be recommended as a promising technique for the synthesis of ultrafine bismuth oxide powders.
