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基于片状前驱体组装中孔nio微球

, PP. 10-14

Keywords: 氧化镍,中孔,球形组装,片状碱式金属盐

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Abstract:

收利用醇水混合溶剂作为反应介质，以硝酸镍（ni(no3)2·6h2o）为ni源，尿素（co(nh2)2）为沉淀剂，合成一种纳米片组装的碱式镍化合物微球，经热处理得到由nio中孔纳米片组装的微球.采用x射线衍射仪、环境扫描电镜、傅立叶红外光谱仪和比表面及孔径分布测试仪对产物进行表征.结果表明：所得前驱体是一种片状结构的碱式碳酸镍盐（nio245c074n025h290），经热处理后nio纳米片单元上形成25和40nm2种孔径的中孔结构.改变尿素用量由001mol增加至003mol，会形成ni(hco3)2颗粒，从而改变微球表面形貌.结合peg的模板作用和层状碱式金属盐类物质的成核及生长特性，提出了微米尺度球形组装nio中孔纳米片的可能生长机理.

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