期刊
SOLAR ENERGY MATERIALS AND SOLAR CELLS
卷 91, 期 19, 页码 1765-1774出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.solmat.2007.06.003
关键词
photocatalytic reduction; carbon dioxide; operating parameters; reaction pathways; kinetic modeling
The photocatalytic reduction of carbon dioxide (CO2) was studied in a self-designed circulated photocatalytic reaction system under titanium dioxide (TiO2, Degussa P-25) and zirconium oxide (ZrO2) photocatalysts and reductants at room temperature and constant pressure. The wavelengths of incident ultraviolet (UV) light for the photocatalysis of TiO2 and ZrO2 were 365 and 254 nm, respectively. Experimental results indicated that the highest yield of the photoreduction Of CO2 were obtained using TiO2 with H-2 + H2O and ZrO2 with H2. Photoreduction Of CO2 over TiO2 with H-2 + H2O formed CH4, CO, and C2H6 with the yield of 8.21, 0.28, and 0.20 Vmol/g, respectively, while the photoreduction Of CO2 over ZrO2 with H-2 formed CO at a yield of 1.24 Vmol/g. The detected reaction products supported the proposition of two reaction pathways for the photoreduction Of CO2 over TiO2 and ZrO2 with H-2 and H2O, respectively. Additionally, a one-site Langmuir-Hinshewood (L-H) kinetic model was successfully applied to simulate the photoreduction rate of CO2. (c) 2007 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据