通过简单调节反应介质热塑性酚醛树脂与乙二醇配比,选择性地制备了CoC2O4·2H2O纳米棒和纳米片晶体或其两种形貌晶体混合物.样品热重和差示扫描量热(TG-DSC)、X射线粉体衍射(XRD)、场发射扫描电镜( FESEM)实验表明:以热塑性酚醛树脂为反应介质得到了COC2O4·2H2O纳米棒；以乙二醇为反应介质得到了CoC2O4·2H2O纳米片；逐渐增大乙二醇和酚醛树脂质量比,实现了CoC2O4·2H2O形貌由纳米棒形貌转变为纳米片形貌.基于不同晶体形貌和实验结果,提出了棒状和片状COC2O4·2H2O可能的形成机理模型以解释两种形貌COC2O4·2H2O纳米晶的生长行为.
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