A comparative study of photocatalytic degradation of phenol of TiO(2) and ZnO in the presence of manganese dioxides

作者：Li Shunjun; Ma Zichuan^*; Zhang Jie; Wu Yinsu; Gong Yamin

来源：Catalysis Today, 2008, 139(1-2): 109-112.

DOI：10.1016/j.cattod.2008.08.012

• TiO(2)
• ZnO
• MnO(2)
• Phenol
• Deactivation
• Photocatalysis

The effects of the presence of alpha-MnO(2), beta-MnO(2) and delta-MnO(2) on the photocatalytic degradation of phenol by TiO(2) and ZnO have been investigated. Experiments were conducted in a batch reactor, at initial pH 6.0 and 25 degrees C. The results showed that the TiO(2)-photocatalytic degradation of phenol was inhibited completely in the first 20-60 min in the presence of three crystal types of MnO(2) whereas the ZnO-photocatalytic degradation of phenol only declined slightly. UV-vis diffuse reflectance spectroscopy (DRS) and surface photovoltage spectroscopy (SPS) analysis implied that the interaction of MnO(2) with TiO(2) and ZnO could change the energetic of these two photocatalysts.

• 出版日期2008-12-15
• 单位河北师范大学