| 单分散超细ZnO粉体的制备与表征 |
| Investigation on Monodispersed Superfine ZnO Powders Prepared by Decompressed Distillation Process |
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| 摘要: |
| 关键词: 减压蒸馏 单分散 超细ZnO |
| 基金项目: |
| Abstract: Monodispersed superfine ZnO powders with particle size of about 200～400nm were successfully prepared by the decompressed distillation process with n-butyl alcohol as the solvent. The starting materials were Zn(NO3)2·6H2O and NH3·H2O. TG-DSC， XRD， TEM and BET surface areas techniques were used to characterize the precursor and as-prepared superfine ZnO powders. In the preparation process of superfine ZnO powders， two techniques including the decompressed distillation with n-butyl alcohol and washing with absolute ethanol were used to avoid agglomeration. It is showed that the decompressed distillation process has a better effect in avoiding ag-glomeration than washing with absolute ethanol. The precursor obtained by the decompressed distillation technique has a lower calcination temperature than the one obtained by washing with absolute ethanol. Zincite phase of ZnO with some impurities was obtained when the precursor was calcined at 200℃ for 2h. After it was calcined at 300℃ for 2h， pure superfine ZnO powder was obtained. |
| Keywords: decompressed distillation monodispersed superfine ZnO |
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| 王金敏,高 濂.单分散超细ZnO粉体的制备与表征[J].无机化学学报,2003,19(11):1249-1252. |
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