织构可控多孔炭纳米纤维的制备及其室温脱除低浓度氮氧化物

王明玺; 郭泽宇; 黄正宏; 康飞宇

织构可控多孔炭纳米纤维的制备及其室温脱除低浓度氮氧化物

1.
武汉工程大学化学与环境工程学院, 绿色化工过程教育部重点实验室, 湖北武汉 430074;
2.
清华大学材料学院, 北京 100084;
3.
内蒙古农业大学材料科学与艺术设计学院, 内蒙古呼和浩特 010010

基金项目: 中日国际科技合作项目JST-MOST(2011DFA50430,2008DFA51410).

详细信息

通讯作者:
黄正宏,博士,副研究员.E-mail:zhhuang@mail.tsinghua.edu.cn

中图分类号: TQ127.1⁺1
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- 文章访问数: 418
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- 被引次数: 0
出版历程
- 收稿日期: 2016-05-08
- 录用日期: 2016-06-28
- 修回日期: 2016-06-04
- 刊出日期: 2016-06-28

Preparation of porous carbon nanofibers with controllable pore structures for low-concentration NO removal at room temperature

1.
Key Laboratory for Green Chemical Process of Ministry of Education, School of Chemical and Environmental Engineering, Wuhan Institute of Technology, Xiongchu Avenue 693, Wuhan 430074, China;
2.
Lab of Advanced Materials, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China;
3.
School of Materials Science and Art Design, Inner Mongolia Agriculture University, Hohhot 010010, China

Funds: Cooperative Project JST-MOST (2011DFA50430, 2008DFA51410).

摘要

摘要: 采用静电纺丝法制备聚丙烯腈纤维,经预氧化、炭化和活化,得到具有孔径发达和比表面积大的多孔炭纳米纤维。控制纺丝液的浓度和活化条件,可制得织构可控的多孔炭纳米纤维。将所制备的纤维用于室温低浓度NO(20 ppm)的脱除,脱除效果主要基于吸附和催化氧化作用。纤维的织构影响其脱除NO的性能,直径越小、微孔越丰富、比表面积越大,对NO的吸附与催化氧化效果越好。当NO进口浓度为20 ppm时,在900℃下活化的平均直径为175 nm的多孔炭纳米纤维脱除NO率可高达29.7%。
- 多孔炭纳米纤维 /
- NO脱除 /
- 织构可控 /
- 催化氧化
Abstract: Porous carbon nanofibers (PCNFs) with controllable pore structures for removing low-concentrations of NO at room temperature were prepared from electrospun polyacrylonitrile nanofibersby oxidative stabilization, carbonization and steam activation. The PCNFs had high surface areas and abundant micropores, which were favorable for the adsorption and catalytic oxidation of NO at ambient temperature. The diameter of the fibers and their pore structure were tailored by adjusting the concentrations of polyacrylonitrile, and the spinning and activation parameters. Their performance in the removal of low-concentration NO was strongly dependent on their pore structure and fiber diameter. The highest NO removal ratio for PCNFs activated at 900℃, which had an average diameter of 175 nm, reached 29.7% when the inlet NO concentration was 20 ppm.
- Porous carbon nanofibers (PCNFs) /
- NO removal /
- Controllable texture /
- Catalytic oxidation

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参考文献(46)

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