Polar Mineral Tourmaline and Its Effect on the Photocatalysis of Nano-TiO2

作     者：Ji Zhijiang Zhang Liansong Wang Xiaoyan Wang Jing Wang Jimei Ji Zhijiang;Zhang Liansong;Wang Xiaoyan;Wang Jing;Wang Jimei

作者机构：Institute of Environmental Engineering China Building Material Academy Beijing 100024China Institute of Environmental Engineering China Building Material Academy Beijing 100024China Institute of Environmental Engineering China Building Material Academy Beijing 100024China Institute of Environmental Engineering China Building Material Academy Beijing 100024China Institute of Environmental Engineering China Building Material Academy Beijing 100024China 

出 版 物：《稀有金属材料与工程》 (Rare Metal Materials and Engineering)

年 卷 期：2004年第33卷第Z1期

页      面：305-308页

核心收录：

学科分类：0808[工学-电气工程] 081902[工学-矿物加工工程] 0819[工学-矿业工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 0806[工学-冶金工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0702[理学-物理学] 

基　　金：The National Nature Science Foundation of China (50272062) and Beijing City Science Foundation of China(2042021) 

主　　题：tourmaline powder nano-TiO2 hydroxyl free radical 

摘      要：The mechanism for tourmaline powder improving the photocatalysis effect of nano-TiO2 was studied by electron-spin resonance (ESR). It is found that the intensity of the signal of hydroxyl free radical produced by the mixture of the tourmaline and nano-TiO2 through 355nm wavelength ultraviolet radiating is increased. Under natural light, the mixture of nano TiO2 and tourmaline powder in a certain weight ratio can improve the effect of decomposing methyl orange that proved that the ESR result was right. The tourmaline particle could promote the photocatalysis of nano-TiO2. This result may be due to the surface electric field of the tourmaline, which can absorb the particle of nano-TiO2 and make the electron inspired by photon transfer from the inner of nano-TiO2 particle to its surface, and even make the electron transfer into tourmaline particle.