| 查看: 1033 | 回复: 7 | |||
| 【奖励】 本帖被评价4次，作者chemphys增加金币 4 个 | |||
| 当前主题已经存档。 | |||
[资源]
中科院大连化物所包信和研究员刚发表的JACS
|
|||
|
中科院大连化物所包信和研究员刚发表的JACS！！！ Tuning of redox properties of iron and iron oxides via encapsulation within carbon nanotubes Wei Chen, Xiulian Pan, Xinhe Bao* A study on the properties of Fe/Fe2O3-carbon nanotube encapsulates was recently accepted by JACS as an article. We report the tuning of the redox properties of iron and iron oxide nanoparticles by encapsulation within carbon nanotubes (CNTs) with varying inner diameters. Raman spectroscopy was employed to investigate the interaction of the encapsulated nanoparticles with the CNTs. A red-shift of the Fe-O mode is observed in the nanoparticles deposited on the outer CNT surfaces with respect to bulk Fe2O3. However, this mode is found to be stepwise blue-shifted with decreasing inner diameter in the CNT-encapsulated Fe2O3 nanoparticles, suggesting an enhanced interaction of Fe2O3 with the inner CNT surface as its curvature increases. The autoreduction of the encapsulated Fe2O3 is significantly facilitated inside CNTs with respect to the outside nanoparticles. Interestingly, it becomes more facile with decreasing CNT channel diameter as evidenced by temperature programmed reaction, in situ XRD and Raman spectroscopy. The oxidation of encapsulated metallic Fe nanoparticles on the other hand is retarded in comparison to that of the outside Fe particles as shown by in situ XRD and gravimetrical measurements with an online microbalance. We attribute this tunable redox behavior of transition metal nanoparticles inside CNTs to a particular electronic interaction of the encapsulates with the interior CNT surface, which stabilizes the metallic state of Fe. [ Last edited by daiqiguang on 2007-5-14 at 07:29 ] |
回复此楼» 猜你喜欢
双非本硕光催化方向想读博，请各位老师看看我！
已经有2人回复
-
瑞典林雪平大学范立洲课题组现招聘博士后、岗位制博士生
已经有0人回复
-
化学工程及工业化学论文润色/翻译怎么收费?
已经有190人回复
-
中国科大仿生界面材料科学全国重点实验室戴懿涛研究员/江雷院士团队招聘科研助理
已经有0人回复
-
中国科大仿生界面材料科学全国重点实验室戴懿涛研究员/江雷院士团队招聘科研助理
已经有0人回复
-
寻求物理化学学报最新的投稿模板！
已经有4人回复
-
东南大学杰青/海优团队招聘催化方向博士后
已经有866人回复
-
投稿咨询
已经有7人回复
-
自科面上 散金币 祈福
已经有61人回复
-
铁钼催化剂成型
已经有2人回复
-
求问：LATP煅烧应该使用什么容器？
已经有0人回复
2楼2007-05-13 19:35:09
3楼2007-05-13 19:58:37
6楼2007-05-15 07:58:41
7楼2007-05-22 16:39:18
简单回复
icku4楼
2007-05-14 11:51
回复
感谢分享！
fwj19795楼
2007-05-14 23:23
回复
