Efficient Complete Oxidation of Acetaldehyde into CO<sub>2</sub> over CuBi<sub>2</sub>O<sub>4</sub>/WO<sub>3</sub> Composite Photocatalyst under Visible and UV Light Irradiation
Takeo AraiEnergy Technology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan, and Nissan Research Center, Nissan Motor Co., Ltd., 1 Natsushima, Yokosuka, Kanagawa 237-8523, JapanMasatoshi YanagidaEnergy Technology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan, and Nissan Research Center, Nissan Motor Co., Ltd., 1 Natsushima, Yokosuka, Kanagawa 237-8523, JapanYoshinari KonishiEnergy Technology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan, and Nissan Research Center, Nissan Motor Co., Ltd., 1 Natsushima, Yokosuka, Kanagawa 237-8523, JapanYasukazu IwasakiEnergy Technology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan, and Nissan Research Center, Nissan Motor Co., Ltd., 1 Natsushima, Yokosuka, Kanagawa 237-8523, JapanHideki SugiharaEnergy Technology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan, and Nissan Research Center, Nissan Motor Co., Ltd., 1 Natsushima, Yokosuka, Kanagawa 237-8523, JapanKazuhiro SayamaEnergy Technology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan, and Nissan Research Center, Nissan Motor Co., Ltd., 1 Natsushima, Yokosuka, Kanagawa 237-8523, Japan
2007en
ABI
Annotatsiya
A highly efficient and visible light responsive photocatalyst was developed by combining the p-type semiconductor CuBi2O4 and the n-type semiconductor WO3. CuBi2O4/WO3 showed higher reactivity than typical TiO2-based photocatalysts for the complete oxidation of acetaldehyde into CO2 under both UV and visible light. From photoelectrochemical measurements, the reaction mechanism is explained based on the model of the p−n photochemical diode for reductivity/oxdizability improvement.
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