论文部分内容阅读
光催化还原CO_2技术是一项极有前景的可再生能源技术,其不仅能减少CO_2排放,还能提供可再生能源。本文利用溶剂热法制备了具有不同{001}/{101}晶面比例的TiO_2纳米晶体,使用X射线衍射仪(XRD),透射电镜(TEM),比表面与孔径分析仪(BET)及光致发光光谱(PL)等手段对其进行表征,在紫外光照射下的连续流反应系统中进行了CO_2光催化还原实验。实验结果表明,合适的{001}/{101}晶面比例可抑制光生电子空穴对的复合,明显提高TiO_2晶体光催化还原CO_2活性。
The photocatalytic reduction of CO 2 technology is a promising renewable energy technology that not only reduces CO 2 emissions but also provides renewable energy. In this paper, TiO 2 nanocrystals with different {001} / {101} crystal planes were prepared by solvothermal method and characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), BET and BET Induced luminescence (PL) and other means to characterize it, carried out CO 2 photocatalytic reduction experiments in a continuous flow reaction system under ultraviolet light irradiation. The experimental results show that the suitable ratio of {001} / {101} planes can suppress the recombination of photogenerated electron-hole pairs and improve the photocatalytic activity of TiO_2 crystal.