摘要
以硝酸钕、天然矿物电气石和钛酸丁酯为原料，采用凝胶法制备了电气石复合Nd／TiO2和钕掺杂TiO2。用XRD、UV-VIS、ESR对电气石复合Nd／TiO2材料进行了表征；以苯酚为目标降解物，考察了电气石复合Nd／TiO2材料的光催化活性。结果发现TiO2的相变转化区间在600—750℃范围内；电气石掺入对Nd／TiO2材料的光吸收范围基本没有影响，在300—750℃范围煅烧后，随温度升高UV-VIS图谱有逐渐红移现象；电气石的加入使得Nd／TiO2材料在光照及未光照条件下都起到增强·OH强度的作用；在Nd／TiO2材料中掺入0．6％的电气石获得最好的光催化活性，600℃下煅烧光催化效果较优。
（Tourmaline, Nd）/TiO2 and TiO2-doped Nd element were prepared by using the Gel method with nitrate of Nd, natural tourmaline and Ti（ OBu）4 as raw materials. （Tourmaline, Nd）/TiO2 was characterized by XRD, UV-VIS, and ESR techniques; the photocatalysis activity of （tourmaline, Nd）/TiO2 and TiO2-doped Nd element was measured with phenol as an objective photodegradation substance. The results： the phase transferring range of TiO2 is between 600-750 ℃ ; with the doping of tourmaline, the UV-VIS adsorption spectrum of Nd/TiO2 was basically not affected, and showed a gradual Einstein shift with the increase of calcined temperature between 300-750 ℃ ; · OH intensity of Nd/TiO2 could be enhanced both in irradiation and in no irradiation when tourmaline was added in it; the doping of 0.6% tourmaline led to the best photocatalytic activity of Nd/TiO2 and the best photocatalytic effect appeared when calcined at 600 ℃.
出处
《矿物学报》
CAS
CSCD
北大核心
2006年第2期233-237,共5页
Acta Mineralogica Sinica
基金
生态功能基元材料与复合建材集成技术开发(2001AA320207)
