以尿素、硫脲和氟化铵为掺杂物,采用一步水热法制备可见光响应的不同非金属共掺杂TiO2纳米管(TiO2NT).通过SEM、TEM、XRD、BET、FTIR、UV-Vis DRS等对样品进行了表征,考察其吸附性能及在模拟太阳光下对甲基橙的降解活性.结果表明,在碱性条件下一步水热法制备的不同非金属共掺杂TiO2NT具有较大的比表面积(193.93 m2/g)和较小的带隙能(2.76eV),非金属共掺杂明显提高了可见光利用率.在可见光辐照下,硫脲掺杂TiO2纳米管(N,S-TiO2 NT)复合材料的光催化性能最好,反应100min后甲基橙降解率可达87.4％,降解过程符合一级动力学方程.
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