综述了近年来国内外对纳米颗粒进行表面改性所采用的包覆方法,包括固相法和沉淀法、溶胶-凝胶法、化学镀法、聚合物包裹法等液相化学法.主要从包覆机理、表征方法、包覆方法及应用进行综述,指出了这些包覆方法的技术关键及优缺点,重点介绍了溶胶-凝胶包覆方法及其应用.并展望了包覆技术的发展前景.
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