Journal of Textile Research ›› 2020, Vol. 41 ›› Issue (08): 1-8.doi: 10.13475/j.fzxb.20191205408

• Fiber Materials •     Next Articles

Preparation and adsorption performance of high-ortho phenolic resin based activated carbon nanofibers

YANG Kai1, ZHANG Xiaomei1, JIAO Mingli2(), JIA Wanshun1, DIAO Quan2, LI Yong1, ZHANG Caiyun2, CAO Jian2   

  1. 1. School of Fashion, Zhongyuan University of Technology, Zhengzhou, Henan 450007, China
    2. School of Materials and Chemical Engineering, Zhongyuan University of Technology, Zhengzhou, Henan 450007, China
  • Received:2019-12-24 Revised:2020-05-11 Online:2020-08-15 Published:2020-08-21
  • Contact: JIAO Mingli E-mail:johnml@163.com

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Abstract:

In order to improve the adsorption performance of phenolic resin based activated carbon fibers, the high-ortho phenolic resin was catalyzed by zinc acetate and sulphuric acid, and then mixed with polyvinyl butyral(PVB)as raw material, the flexible high-ortho phenolic resin based activated carbon nanofibers were prepared by a sequence of processes, including electrospinning, consolidation, carbonization and activation, and then the structure and performance were tested and analyzed by Fourier infrared spectrum, scanning electron microscopy, thermogravimetric analysis and specific surface area and pore size distribution analyzer. The results show that the crosslinking structures of the phenolic fibers are formed with the increase of the char yield, and the thermal stability at low temperature decreases with the alcoholysis of PVB. The adsorbing evaluation demonstrates that the high specific surface area of the high-ortho phenolic resin based activated carbon nanofiber reaches 1 409 m2/g, and its adsorption capacity for methylene blue and iodine appears as high as 837 and 2 641 mg/g, respectively.

Key words: high-ortho phenolic resin, activated carbon nanofiber, electrospinning, adsorption performance, microporous structure

CLC Number: 

  • TQ342.86

Tab.1

Content of PR and PVB in spinning dope %"

样品编号 PR质量分数 PVB质量分数
1# 1.1 4.00
2# 2.2 3.75
3# 3.3 3.50
5# 5.5 3.00
7# 7.7 2.50
9# 9.9 2.00

Fig.1

FT-IR spectra of phenolic samples at different preparation stage"

Fig.2

SEM images of PACF fiber with different PR and PVB content"

Fig.3

TG curves of phenolic samples at different preparation stage"

Fig.4

N2 adsorption/desorption isotherms and pore size distribution of PCF and PACF fiber with different PR and PVB content.(a)N2 adsorption/desorption isotherms of PCF;(b)N2 adsorption/desorption isotherms of PACF;(c)Pore size distribution of PCF;(d)Pore size distribution of PACF"

Tab.2

Textural properties of PCF and PACF fiber with different PR and PVB content"

试样编号 比表面积/
(m2·g-1)		 微孔比表面积/
(m2·g-1)		 孔容/
(m3·g-1)		 微孔孔容/
(m3·g-1)		 平均孔
径/nm		 介孔比
例/%
PCF-1# 375 313 0.207 0.147 2.22 28.8
PCF-2# 507 422 0.273 0.196 2.16 28.3
PCF-3# 712 648 0.344 0.278 1.94 19.2
PCF-5# 648 594 0.299 0.248 1.85 17.1
PACF-2# 1 302 1 133 0.668 0.523 2.05 27.7
PACF-3# 1 409 1 198 0.771 0.568 2.19 26.4
PACF-5# 773 599 0.434 0.302 2.25 30.5

Fig.5

Iodine and MB adsorption capacity of PCF and PACF fiber with different PR and PVB content"

Fig.6

Effect of adsorption time on MB (a) and iodine (b) adsorption capacity of PACF-3# fiber"

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