ALTERATION OF THE CATALYTIC PROPERTIES OF ANATASE BY SHOCK-WAVE LOADING

作者：LU, GX^*; XU, K; LI, SB

来源：Materials Letters, 1994, 21(3-4): 251-253.

The alteration of the properties of anatase by exposure to a shock wave was investigated by X-ray diffraction spectroscopy (XRD), electron spin resonance (ESR), inductively coupled plasma atomic emission spectroscopy (ICP) and transmission electron microscopy (TEM) methods. Broadening of XRD profiles was observed after shock-wave loading. The isotropic ESR signal for g = 2.000, ascribed to F-centers, increased 2.5 times after that treatment. In contrast, the signal strength for g = 1.993 decreased to half of the original. Shocked anatase TiO2 exhibited 1.5 times higher photoactivity for hydrogen evolution than that of unshocked material. A possible mechanism of shock-wave alteration is proposed.

• 出版日期1994-11
• 单位中国科学院兰州化学物理研究所