以工业钛液为钛源,调节钛液指标和钛液底水体积比,热水解制备出掺杂多孔锐钛型TiO2.采用XRD、粒度分布、等温N2吸附-脱附及XRF等对样品进行表征.不同的钛液底水体积比对合成多孔TiO2的晶体结构、粒径、比表面积和孔道结构等具有较大影响,锐钛相晶型改善、比表面积提高及离子掺杂等有助于其光催化活性的提高.钛液底水体积比为100:35时所得多孔TiO2的比表面积最大,达215.4 m2/g,孔径分布窄,并掺杂少量氧化物,对亚甲基蓝光催化降解率达92.8％.
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