采用溶剂热法合成具有高结晶性与单分散性的TiO2纳米棒.采用TEM、XRD、HRTEM等对样品的微观结构进行表征,并考察了TiO2纳米棒对亚甲基蓝的光催化性能.通过控制反应时间、反应温度,研究纳米棒的形貌演变规律.结果表明,可以通过“奥斯特瓦尔德熟化”和“取向接触”两种晶体生长过程制备出棒状TiO2纳米晶,降低纳米晶的表面能是晶体生长与形貌演变的主要驱动力；高结晶性的TiO2纳米棒具有高于P25的光催化能力.
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