| 查看: 419 | 回复: 2 | |||
| 当前只显示满足指定条件的回帖，点击这里查看本话题的所有回帖 | |||
weijun.deng木虫 (知名作家)
|
[交流]
ESR
|
||
|
ESR 如何能够看出激子的寿命？ The ESR data are shown in Fig. 6. It can be seen that the total intensity of hydroxyl radical (?OH) species and superoxide radical (O2 ?2) species as detected over the CeO2-NT sample is higher than that over the CeO2-NP and commercial P25 nanoparticles. In addition, it should be noted that, upon light irradiation, the O2 ?2 radical species are clearly observed over only the CeO2-NT sample but they are not observed over the samples of P25 and CeO2-NP. These suggest the prolonged lifetime of electron–hole pairs generated over the sample of CeO2-NT upon light irradiation. As a result, as reflected in Fig. 6, a greater amount of radical species with strong oxidation power, including ?OH species and superoxide radical O2 ?2 is able to be photogenerated over the CeO2-NT than its counterpart CeO2-NP and commercial P25 nanoparticles. This in turn explains reasonably why the higher photocatalytic activity of CeO2 nanotubes than CeO2 and P25 nanoparticles has been observed toward the gas-degradation of benzene, as schematically shown in Fig. 7. |
回复此楼» 猜你喜欢
如何掌握一门外语？
已经有25人回复
-
国家级人才团体课题组招收2026届博士
已经有1人回复
-
物理化学论文润色/翻译怎么收费?
已经有76人回复
-
气相色谱点不着火
已经有4人回复
-
化工安全有关的复习提纲
已经有0人回复
-
国家级人才课题组招收2026年入学博士
已经有2人回复
-
散金
已经有87人回复
-
浙江师范大学国家杰青杨启华教授团队招收2026年博士研究生
已经有34人回复
-
南通大学电气与自动化学院2026年优秀博士招聘公告
已经有0人回复
weijun.deng
木虫 (知名作家)
- 应助: 0 (幼儿园)
- 金币: 519.3
- 散金: 670
- 红花: 6
- 沙发: 24
- 帖子: 5172
- 在线: 229小时
- 虫号: 450966
- 注册: 2007-11-04
- 性别: GG
- 专业: 生物化工与食品化工
3楼2014-04-27 11:20:05
weijun.deng
木虫 (知名作家)
- 应助: 0 (幼儿园)
- 金币: 519.3
- 散金: 670
- 红花: 6
- 沙发: 24
- 帖子: 5172
- 在线: 229小时
- 虫号: 450966
- 注册: 2007-11-04
- 性别: GG
- 专业: 生物化工与食品化工
|
Electron spin resonance (ESR) spectra were measured using a Bruker A300 EPR electron paramagnetic resonance spectrometer equipped with a quanta- Ray Nd:YAG laser system as their radiation light source (l = 254 nm). The settings were the center field at 3480.00 G, microwave frequency at 9.83 GHz, and power at 6.35 mW. |
2楼2014-04-27 11:13:50