采用超声辅助溶胶-凝胶法,以钛酸丁酯为原料,尿素为N源,硝酸镧为La源,制备了N与La共掺杂纳米TiO2/电气石复合材料.采用XRD、UV-Vis、SEM-EDS和XPS对复合材料的结构和性能进行了表征.以2,4,6-三硝基甲苯作为目标污染物,考察了N与La共掺杂纳米TiO2/电气石复合材料的光催化活性及再生利用性能.结果表明:N与La共掺杂并负载电气石后,两者协同作用使TiO2晶粒更加细化,光吸收范围向可见光区拓展,N与La共掺杂纳米TiO2/电气石复合材料具有良好的光催化活性和再生利用性能,且在模拟可见光照射条件下对2,4,6-三硝基甲苯具有良好的去除效果.
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