| The long-term photocatalytic stability of Co2+-modified P25-TiO2 powders for the H2 production from aqueous ethanol solution | |
| Department | OSSO国家重点实验室 |
Wu YQ(吴玉琪) ; Lv GX(吕功煊); Li SB(李树本); Lv GX(吕功煊)
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| The second department | erc国家工程研究中心 |
| 2006 | |
| Source Publication | Journal of Photochemistry and Photobiology A: Chemistry
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| ISSN | 1010-6030 |
| Volume | 181Issue:2-3Pages:263–267 |
| Abstract | In this paper, the long-term stability of photocatalytic activity of Co2+ doped P25-TiO2 nanoparticles for hydrogen production from aqueous ethanol solution is discussed using a photoelectrochemical method in detail. It was found that after a long-term photoreaction, the photocatalytic activity of Co2+ ion modified P25-TiO2 photocatalyst for hydrogen production has decreased by a factor of ca. 50%, and still was very high compared to that of pure P25-TiO2 photocatalyst. And the steady anodic photocurrent appeared to have an obvious decrease after photoreaction (from 2.75×10−4 to 1.5×10−4 A), but the character of photocurrent response was still similar to photoreaction before. Moreover, the most important reason for the decrease of photocatalytic activity is the removal of CoOx active species (x > 1) from the surface of TiO2 photocatalyst after a long-term photoreaction. In addition, a new CoOx intermediate species (x < 1, photooxidative potential at −0.36V versus SCE) emerged on the surface of TiO2 photocatalyst during photoreaction. |
| Keyword | Photocatalytic Reactivity Stability co2+-modified Tio2 Photoelectrochemistry H2 Production |
| Funding Organization | the Nation Natural Science Foundation of China (Project number, 90210027);the China Nation Key Basic Research Special Funds (Project numbers, 2003CB214500;G200000264) |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 环境催化与氢能源研究组;环境催化与清洁能源研究组 |
| compositor | 第一作者单位 |
| Document Type | 期刊论文 |
| Identifier | http://ir.licp.cn/handle/362003/4454 |
| Collection | 羰基合成与选择氧化国家重点实验室（OSSO） 精细石油化工中间体国家工程研究中心（ERC） |
| Corresponding Author | Lv GX(吕功煊) |
| Recommended Citation GB/T 7714 | Wu YQ,Lv GX,Li SB,et al. The long-term photocatalytic stability of Co2+-modified P25-TiO2 powders for the H2 production from aqueous ethanol solution[J]. Journal of Photochemistry and Photobiology A: Chemistry,2006,181(2-3):263–267. |
| APA | Wu YQ,Lv GX,Li SB,&吕功煊.(2006).The long-term photocatalytic stability of Co2+-modified P25-TiO2 powders for the H2 production from aqueous ethanol solution.Journal of Photochemistry and Photobiology A: Chemistry,181(2-3),263–267. |
| MLA | Wu YQ,et al."The long-term photocatalytic stability of Co2+-modified P25-TiO2 powders for the H2 production from aqueous ethanol solution".Journal of Photochemistry and Photobiology A: Chemistry 181.2-3(2006):263–267. |
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| J.Photochem.Photobio（254KB） | 开放获取 | CC BY-NC-SA | View Application Full Text | |||
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