低温条件下以TiCl3溶液为钛源,硝酸盐为氧化剂一步制备了高催化活性的棒状金红石型纳米TiO2.以亚甲基蓝的光催化降解为探针反应, 评价了其光催化活性.运用XRD、TEM、UV-Vis表征技术考察了金红石型纳米TiO2的晶体结构、微晶尺寸, 并对氧化合成机制作了探讨.结果表明, NO 3在水热合成过程中是关键的氧化剂;制备的纳米TiO2为棒状结构,粒径约15 nm,棒长约60 nm;光催化降解反应6 h后亚甲基蓝降解率可达53.66%,其性能远远优越于P-25(41.32%).
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