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- Title
Graphitization control and NO catalytic performance of electrospinning PAN nanofibers.
- Authors
GUO Ze-yu; LIU Xuan-cai; HUANG He-dong; YANG Peng-yan; Ll Jun; XUE Zhen-hua
- Abstract
In order to improve the catalytic oxidation performance of carbon nanofibers at low concentrations of nitric oxide (NO, 50 mg/L) at near room temperature (20 °C), polyacrylonitrile (PAN) carbon nanofiber precursors were used to prepare carbon nanofibers by electrospinning. After pre-oxidation, carbonization and activation treatment processes, PAN-based carbon nanofibers (PCNFs) were obtained with developed porosity and high specific surface area structure. By adjusting the carbonization and activation temperature of the fiber (800, 850, 900, 950°C), a series of porous carbon nanofibers with graphitization degree and controllable pore structure and specific surface area were obtained. The prepared carbon nanofibers (PCNFs) were used for the removal of low concentration N0(50mg/L) at near room temperature(20°C). The results show that the different graphitization degree of carbon nanofibers exhibit different catalytic activities for low concentrations of NO. At the same time, it also has a regular effect on the pore structure and specific surface area of carbon nanofibers. When the graphitization degree is 0.85, the maximum catalytic oxidation efficiency for NO is 3.4%.
- Subjects
POLYACRYLONITRILES; CARBON nanofibers; GRAPHITIZATION; NANOFIBERS; CATALYTIC oxidation; SURFACE structure; SURFACE area; NITRIC oxide
- Publication
Journal of Tiangong University, 2020, Vol 39, Issue 4, p3
- ISSN
1671-024X
- Publication type
Article
- DOI
10.3969/j.issn.1671-024x.2020.04.004