Morphology-dependent supramolecular photocatalytic performance of porphyrin nanoassemblies: from molecule to artificial supramolecular nanoantenna
文献类型：期刊论文
| 作者 | Guo, Peipei; Chen, Penglei ; Ma, Wanhong; Liu, Minghua
|
| 刊名 | JOURNAL OF MATERIALS CHEMISTRY
 |
| 出版日期 | 2012 |
| 卷号 | 22期号:38页码:20243-20249 |
| ISSN号 | 0959-9428 |
| DOI | 10.1039/c2jm33253a |
| 英文摘要 | In this paper, we have studied the supramolecular photocatalytic performance of porphyrin-based nanofibers and nanospheres in terms of photodegradation of rhodamine B (RhB) pollutant under visible light irradiation, wherein interesting morphology-dependent photocatalytic activity has been achieved. We have demonstrated that nanofibers, which are synthesized by means of surfactant-assisted self-assembly of zinc 5,10,15,20-tetra(4-pyridyl)-21H,23H-porphine (ZnTPyP), display distinct photocatalytic activity for the photodegradation of RhB molecules, where the bleaching reaction could be repeatedly operated 8 times. When the spherical nanostructures are employed, however, only negligible photocatalytic activity could be observed. The electron paramagnetic resonance investigations have revealed that singlet oxygen species are generated when spherical ZnTPyP nanostructures are employed, whereas hydroxyl radical species are produced in the nanofiber system. An electron transfer process is suggested to be responsible for the photocatalytic performance of the fibrous nanoassemblies. It is revealed that the monomeric state of ZnTPyP in the spherical nanostructures disfavors the electron transfer process, resulting in negligible photocatalytic activity. On the contrary, the formation of J-aggregates in the nanofibers facilitates the electron transfer process, resulting in distinct photocatalytic performance. The investigation suggests that an artificial supramolecular nanoantenna system based on nanostructured porphyrin assemblies could be achieved by tuning the molecular arrangement of the nanoassemblies. |
| 语种 | 英语 |
| WOS记录号 | WOS:000308658600023 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/47239]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Chen, Penglei |
| 作者单位 | Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, CAS Key Lab Colloid Interface & Chem Thermodynam, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Guo, Peipei,Chen, Penglei,Ma, Wanhong,et al. Morphology-dependent supramolecular photocatalytic performance of porphyrin nanoassemblies: from molecule to artificial supramolecular nanoantenna[J]. JOURNAL OF MATERIALS CHEMISTRY,2012,22(38):20243-20249. |
| APA | Guo, Peipei,Chen, Penglei,Ma, Wanhong,&Liu, Minghua.(2012).Morphology-dependent supramolecular photocatalytic performance of porphyrin nanoassemblies: from molecule to artificial supramolecular nanoantenna.JOURNAL OF MATERIALS CHEMISTRY,22(38),20243-20249. |
| MLA | Guo, Peipei,et al."Morphology-dependent supramolecular photocatalytic performance of porphyrin nanoassemblies: from molecule to artificial supramolecular nanoantenna".JOURNAL OF MATERIALS CHEMISTRY 22.38(2012):20243-20249. |
入库方式： OAI收割
来源：化学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。