以蔗糖为碳源,采用水热法合成了碳球模板剂,再以钛酸四丁酯(TBOT)为钛源,使纳米TiO2沉积于碳球上,经高温煅烧制备TiO2空心球并研究了其对亚甲基蓝光催化降解的性能.结果表明,在最佳制备条件及使用量下,紫外光照150 min后,TiO2对亚甲基蓝的降解率可达到86.8％.SEM、TEM及XRD结果表明制得的TiO2呈不规则空心球状,壁较薄且结构疏松,具有锐钛矿相.相比商品化P25,空心球的禁带宽度稍有变宽,但相同条件下的光降解性能仍优于P25.
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