层次孔超细炭纤维及其对乙醇和丙酮的吸附性能

白宇; 黄正宏; 张政军; 康飞宇

doi:10.1016/S1872-5805(19)60029-6

层次孔超细炭纤维及其对乙醇和丙酮的吸附性能

doi: 10.1016/S1872-5805(19)60029-6

白宇^1,2,
黄正宏^1,2,,
张政军²,
康飞宇^2,3

1.
清华大学材料学院, 新型陶瓷与精细工艺国家重点实验室, 北京 100084;
2.
清华大学材料学院, 先进材料教育部重点实验室, 北京 100084;
3.
清华大学深圳国际研究生院, 广东深圳 518055

基金项目: 国家自然科学基金（51672151）；教育部先进材料重点实验室基金（2016AML02）；中国博士后科学基金（2016M601013）.

详细信息

通讯作者:
黄正宏,教授.E-mail:zhhuang@tsinghua.edu.cn;康飞宇,教授.E-mail:fykang@mail.tsinghua.edu.cn

中图分类号: TQ342.⁺74
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出版历程
- 收稿日期: 2019-09-20
- 录用日期: 2020-01-03
- 修回日期: 2019-11-30
- 刊出日期: 2019-12-28

Ultrafine hierarchically porous carbon fibers and their adsorption performance for ethanol and acetone

1.
State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China;
2.
Key Laboratory of Advanced Materials(MOE), School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China;
3.
Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China

Funds: National Natural Science Foundation of China (51672151); Fund of Key Laboratory of Advanced Materials of Ministry of Education (2016AML02); China Postdoctoral Science Foundation (2016M601013).

摘要

摘要: 以酚醛树脂和乙酰丙酮铁为前驱体，通过静电纺丝和后续氨气气氛热处理制备得到层次孔超细炭纤维，并研究了其对挥发性有机物（VOCs）气体的吸附性能。本文阐述了层次孔性对于不同样品VOC吸附性能的影响。新型的层次孔超细炭纤维在高压力时展现了提高的乙醇和丙酮吸附量。酚醛树脂基层次孔超细炭纤维25℃时的乙醇和丙酮最高吸附量分别为7.55和12.56 mmol g^-1，超过了原始超细炭纤维和聚丙烯腈（PAN）基超细炭纤维的吸附量。酚醛树脂作为静电纺丝前驱体用于制备新型纤维明显优于PAN。因此，该新型自支撑超细炭纤维是一种很有前景的用于去除VOC的吸附剂材料。
- 超细炭纤维 /
- 层次孔结构 /
- 吸附 /
- 挥发性有机物
Abstract: Ultrafine hierarchically porous carbon fibers (HPCFs) were produced by electrospinning from phenolic resin and Fe(acetylacetonate)₃, carbonization under an NH₃ atmosphere and HCl/water leaching to remove the Fe species. Their adsorption performance for ethanol and acetone and their pore structure were compared with fibers produced from polyacrylonitrile (PAN) and Fe(acetylacetonate)₃ (HPCFs(PAN)), and phenolic resin without the Fe(acetylacetonate)₃ addition (PCFs). Results indicate that HPCFs and HPCFs(PAN) are hierarchically porous with abundant micropores and mesopores while PCFs are dominantly microporous. The addition of Fe(acetylacetonate)₃ promotes graphitization. The hierarchical pore structure increases the uptake of both ethanol and acetone vapors at high pressures by multilayer adsorption while the microporous structure contributes to the uptake at low pressures by monolayer adsorption. The highest ethanol and acetone adsorption uptakes were found for the HPCFs, and are 7.55 and 12.56 mmol g^-1 at 25℃, respectively. Superiority of phenolic resin to PAN as the carbon precursor is demonstrated. The freestanding characteristic of the ultrafine carbon fibers as a result of their electrospining is advantageous as an adsorbent for the removal of volatile organic compounds.
- Carbon ultrafine fibers /
- Hierarchical porous structure /
- Adsorption /
- Volatile organic compounds

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参考文献(35)

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层次孔超细炭纤维及其对乙醇和丙酮的吸附性能

doi: 10.1016/S1872-5805(19)60029-6

通讯作者:
黄正宏,教授.E-mail:zhhuang@tsinghua.edu.cn;康飞宇,教授.E-mail:fykang@mail.tsinghua.edu.cn

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Ultrafine hierarchically porous carbon fibers and their adsorption performance for ethanol and acetone

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层次孔超细炭纤维及其对乙醇和丙酮的吸附性能

doi: 10.1016/S1872-5805(19)60029-6

通讯作者: 黄正宏,教授.E-mail:zhhuang@tsinghua.edu.cn;康飞宇,教授.E-mail:fykang@mail.tsinghua.edu.cn

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出版历程

Ultrafine hierarchically porous carbon fibers and their adsorption performance for ethanol and acetone

计量

出版历程

目录

通讯作者:
黄正宏,教授.E-mail:zhhuang@tsinghua.edu.cn;康飞宇,教授.E-mail:fykang@mail.tsinghua.edu.cn