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《Chemical Research In Chinese Universities》 2005-04
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Synthesis of Ultrafine γ-Bi_2O_3 Powder at Low Temperature

ZHENG Bo, PANG Ai-Hong, GU Jian-Sheng*(Department of Chemistry and Chemical Engineering, Suzhou University, Suzhou 215006, China)  
In this paper, the electrochemical synthesis method was used to prepare γ-Bi_2O_3. Ultrafine Bi metal powder was first synthesized by electrochemical method at room temperature in a single cell .The anode comprised the sacrificial metal Bi; the cathode was Pt; the NaOH solution was used as the electrolyte. The ultrafine Bi metal powder had a special chemical reactivity. Then γ-Bi_2O_3 was prepared by the reaction of ultrafine Bi and NaOH solution. The effect of the concentration of NaOH solution, reaction temperature and additive were studied. The principle of the reaction was discussed. The component of the product was determined by atomic emission spectrometry and EDTA titration analysis. XRD, SEM ,TEM and DTA were employed for the characterization of the obtained products.
【CateGory Index】: TQ135.3
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