以生物废料玉米穗为模板,浸渍钛酸四正丁酯溶液后,经高温煅烧得到分级多孔氧化钛材料,经0.2 mol/L钛酸四正丁酯溶液浸泡后氧化钛完全复制了生物模板的结构,产物为平均直径12 nm的锐钛矿型氧化钛颗粒构成的直径2～5 μm纤维管,管壁密布由纳米颗粒堆积形成的介孔孔道,孔道直径为2～10 nm,材料比表面积约为115.7m2/g,而商用纳米氧化钛P25粉的比表面积约为81 m2/g.用于100 mg/L精制敌百虫农药在紫外光下的降解,在200 min后,分级多孔氧化钛光催化材料的COD(化学需氧量)和TOC(有机碳含量)降解率分别为98.7％和73.8％,高于商用氧化钛材料的84.1％和53.7％.
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