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高活性和高稳定性催化剂的制备是光催化技术实用化的关键.以碳黑为造孔剂制备了改性的纳米TiO2薄膜光催化剂.并通过X射线衍射（XRD）、透射电子显微镜（TEM）、漫反射光谱（DRS）和红外光谱（FTIR）对催化剂的结构进行表征.结果显示,改性TiO2和普通TiO2薄膜均为纳米材料,晶相以锐钛矿为主,并含有少量金红石.碳黑改性使薄膜具有了更多的孔隙,并且其他性质也发生了变化,如晶粒度变小、金红石含量增加、吸收带边红移.光催化降解有机污染物的试验表明,改性TiO2的活性约为普通TiO2的2倍,并对苯酚类的有机污染物有很好的降解效果.降解活性艳红X-3B的稳定性试验表明制备的碳黑改性纳米TiO2催化剂具有较好的稳定性,连续使用1个月活性一直保持不变.
The preparation of high activity and high stability catalyst is the key to the practical application of photocatalytic technology. The modified nano-TiO2 film photocatalyst was prepared by using carbon black as pore-forming agent and characterized by X-ray diffraction (XRD), transmission electron microscopy ), Diffuse reflectance spectroscopy (DRS) and Fourier transform infrared spectroscopy (FTIR) were used to characterize the structure of the catalyst. The results showed that the modified TiO2 and common TiO2 films were all nanomaterials with anatase phase and a small amount of rutile. The modification of carbon black made the film have more pores, and other properties also changed, such as the smaller the grain size, the higher the rutile content and the more the red edge of the absorption band.Experiment of photocatalytic degradation of organic pollutants showed that the modified The activity of TiO2 is about twice that of common TiO2, and it has a good degradation effect on the organic pollutants of phenol.The stability of degradable reactive brilliant red X-3B shows that the prepared carbon black modified nano-TiO2 catalyst has better performance The stability, continuous use of 1 month activity has remained unchanged.