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以锌粒为原料,分子筛为催化剂,利用真空控氧高温气相氧化法,制备了纳米四针状氧化锌晶须 (T-ZnOW).利用XRD和SEM、TEM对产物进行物相分析和形貌观察.结果表明:产物为纯六方晶系纤锌矿结构氧化锌;体系压力和反应温度是影响晶须形貌的两个重要因素.当温度恒定为1038℃,而压力低于11083Pa时,均可获得根部直径为20~80nm、针长500nm~2μm、形貌规整的纳米T-ZnOW.TEM研究表明,纳米T-ZnOW的针部为单晶,而核心为多重孪晶结构,其生长遵循气固生长机理.

参考文献

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