以钛酸四正丁酯为前驱体,硝酸铵和钨酸铵为掺杂源,利用低温溶胶法直接制备了纳米级钨、氮共掺杂二氧化钛粉体.通过XRD、SEM、IR、XPS、GTA等测试手段对样品进行表征,结果表明:共掺杂TiO2粉体为锐钛矿型,呈球状颗粒,粒径为8.9nm,600℃内稳定性好,禁带宽度2.86 eV,光响应迁移到可见光范围.以氙灯模拟太阳光降解甲基橙溶液,光照60 min,光催化剂粉体的降解率达到94％以上,与P25相比有明显提高,具有良好的光降解性能.
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