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首先采用热化学法制备纳米管钛酸,然后把金属硝酸盐和尿素均匀分散于纳米管钛酸的表面,再通过高温焙烧的方法制备得到金属修饰的N掺杂TiO2。采用DRS、XRD分别对样品光吸收能力、晶体结构进行了分析,研究了修饰的金属和掺杂N元素对催化剂光谱吸收的贡献。通过紫外光和可见光光照下降解气相丙烯和液相苯酚考察了催化剂的光催化活性,结果表明,金属修饰N掺杂TiO2在可见光照下对丙烯和苯酚都表现出良好的可见光光催化能力。
Firstly, the nanotubes titanic acid was prepared by thermochemical method, then the metal nitrate and urea were uniformly dispersed on the surface of the nanotube titanic acid, and then the metal-modified N-doped TiO2 was prepared by high-temperature calcination. The light absorption capacity and crystal structure of the samples were analyzed by DRS and XRD respectively. The contribution of the modified metals and doped N elements to the absorption of the catalyst was studied. The photocatalytic activity of the catalyst was investigated by degradation of gaseous propylene and liquid phenol by UV light and visible light irradiation. The results showed that the metal modified N-doped TiO2 exhibited good visible light photocatalytic activity for both propylene and phenol under visible light irradiation.