| 靳治良,吕功煊.Pt/TiO2光催化分解四硼酸钾水溶液制氢[J].分子催化,2005,(2):150-154 |
| Pt/TiO2光催化分解四硼酸钾水溶液制氢 |
| Photocatalytic Hydrogen Production From Aqueous Solution of Potassium Tetraborate using Platinum-loaded TiO2 Powder |
| 修订日期：2004-06-08 |
| DOI： |
| 中文关键词: 四硼酸钾 光催化 分解水制氢 |
| 英文关键词:Potassium tetraborate,Photocatalysis,Hydrogen production from water splitting, |
| 基金项目:国家重点基础研究发展计划(973计划) |
| 靳治良 吕功煊 |
靳治良(中国科学院兰州化学物理研究所,羰基合成与选择氧化国家重点实验室,甘肃,兰州,730000)
;吕功煊(中国科学院兰州化学物理研究所,羰基合成与选择氧化国家重点实验室,甘肃,兰州,730000)
|
| 摘要点击次数: 1355 |
| 全文下载次数: 21 |
| 中文摘要: |
| 研究了以四硼酸钾溶液作反应体系，在1%Pt／TiO2光催化剂的作用下光催化分解水制氢的反应，发现该体系能使放氢速率明显提高．放氢速率还随B4O7^2-浓度的增大而增大．在此基础上，还对B4O7^2-的作用机理进行了探讨，BRO7^2-在该反应体系中主要是通过物理作用有效的阻止了逆反应的发生，从而使放氢速率得以提高． |
| 英文摘要: |
| It is one of an important aspect to construct a new photocatalytic reaction system. In this paper, a new type of water splitting system with significant enhancement effect of hydrogen evolution using Pt-loaded TiO_2 photocatalysts is present. It is found that the rate of hydrogen evolution increased with addition of B_4O_7~(2-) anion. The main role of B_4O_7~(2-) anion on water splitting is speculated to be a physical action. B_4O_7~(2-) anion does not act as a sacrificial donor. In addition, it is found that the yield of H_2 for the photocatalytic decomposition of water over Pt/TiO_2 photocatalyst depends on the direction of light irradiation. |
| HTML 查看全文 查看/发表评论 下载PDF阅读器 |
|
|
|
