通过简单的水热法并在不使用表面活性剂的情况下成功地合成了α-MnO2纳米线,采用XRD和扫描电子显微镜研究了MnO2的晶相、成分和形貌,初步研究了反应温度对纳米结构MnO2合成的影响,对MnO2降解亚甲基蓝催化性能进行了测试.结果表明,α-MnO2纳米颗粒和纳米线的合成是可控的,α-MnO2纳米结构的尺寸和形貌对催化降解亚甲基蓝有较大的影响,其中150℃所得的α-MnO2纳米线,其直径约为20～30nm,降解效果最佳,180min可降解91％.
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