用水热法在180℃一步合成了TiO2纳米棒自组装微米球,并对其光催化性能和形成机理进行了分析.采用X-射线衍射(XRD),扫描电镜(SEM),透射电镜(TEM)和氮气吸附(BET)对催化剂的物相、颗粒粒径及比表面积进行了表征,结果显示产物为金红石型结构,呈纳米棒自组装微米球形貌,微米球中纳米棒的直径约为30纳米.氮气吸附解附实验表明微米球比表面积为31.2m2/g,介孔的尺寸为3.88nm.催化实验显示其在可见光下的催化能力优于P25.
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