质子钛酸盐热解纳米TiO_2的光电性能  

Photoelectrochemical Properties of TiO_2 Nanoparticles

作　　者：曲婕[1] 李颖[1] 姜奇伟[1] 高学平[1] 

机构地区：[1]南开大学新能源材料化学研究所,天津300071

出　　处：《电化学》2009年第1期26-29,共4页Journal of Electrochemistry

基　　金：国家973计划项目(2009CB220100)资助

摘　　要：应用常温搅拌法合成质子钛酸盐，在不同的温度下煅烧生成TiO2纳米晶-X射线衍射、透射电镜、扫描电镜、紫外-可见光谱、光电压-电流和交流阻抗测试，表明500℃煅烧下制备的TiO2纳米晶表现出较好的光电性能，转换效率达到6．39％．The protonated titanate nanoparticles were obtained at room temperature and subsequently calcined at different temperatures （300 ℃, 400 ℃, 500 ℃, 600 ℃ and 700℃） in air. The obtained products were characterized by XRD, TEM and UV-Vis. It is found that the grain sizes of TiO2 nangparticles calcined at 300℃ were about 20 nm, and increased gradually with the temperature rise. Photoelectric performance was measured with I - V curve and electrochemical impedance spectroscopy （EIS）. The TiO2 nanopartieles obtained at 500℃ showed the best photoelectroehemical properties with a photovoltaic conversion efficiency of 6.39%, which is much higher than those at other temperatures. In addition, it is also demonstrated that the charge transfer resistante of TiO2 nanopartieles obtained at 500℃ was much smaller.

关 键 词：DSSCS TIO2 纳米颗粒 光电性能 

分 类 号：O614.411[理学—无机化学] TM914.4[理学—化学]