In Situ Regeneration of Phenol-Saturated Activated Carbon Fiber by an Electro-peroxymonosulfate Process

To obtain a low-density material that is capable of absorbing electromagnetic waves over a wide bandwidth, an activated carbon fiber/Fe3O4 composite material (ACF/Fe3O4) was prepared using an in situ reduction method.

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Synergistic effect of adsorption and photocatalysis for the degradation of toluene by TiO2 loaded on ACF modified by Zn(CH3COO)2

10.21203/rs.3.rs-361242/v1 ◽

2021 ◽

Author(s):

Yuxi Bi ◽

Encheng Sun ◽

Shuai Zhang ◽

Feiran Du ◽

Haidi Wei ◽

...

Keyword(s):

Activated Carbon ◽

Carbon Fiber ◽

Separation Efficiency ◽

Anatase Phase ◽

Activated Carbon Fiber ◽

Utilization Rate ◽

Bifunctional Catalysts ◽

Photodegradation Rate ◽

Chemical Experiment

Abstract Activated carbon fiber (ACF) was modified by Zn(NO3)2, ZnCl2 and Zn(CH3COO)2), respectively, and then TiO2 was loaded on the modified ACFs. The adsorption and photocatalysis performance were explored through the removal of toluene, and TiO2/ACF-Ac modified by Zn(CH3COO)2) with the best toluene performance was selected. The characterization results indicated that TiO2 was mainly loaded on the surface with large amount of oxygen-containing functional groups in anatase phase. The photoelectric chemical experiment results demonstrated that the modified ACFs remarkably improved the charge transmission and the separation efficiency of electrons and holes, and enhanced the utilization rate of sunlight. The adsorption saturation time reached 40 hours and photodegradation rate was 70%. The direct desorption of generated small molecule substances such as H2O and CO2 from the surface of the composites can achieve the in-situ regeneration of the adsorbent. Overall, the bifunctional catalysts provide a prospective way for the treatment of VOCs.

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Polyacrylonitrile-Based Activated Carbon Fiber/SnO2 Composites via Different Synthetic Methods

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.785-786.808 ◽

2013 ◽

Vol 785-786 ◽

pp. 808-811

Author(s):

Xue Jun Zhang ◽

Su Qing Wang ◽

Yan Hong Tian ◽

Ya Dong Li ◽

Xiao Xu

Keyword(s):

Activated Carbon ◽

Carbon Fiber ◽

Electrochemical Properties ◽

Sol Gel ◽

Synthesis Method ◽

Activated Carbon Fiber ◽

Synthetic Methods ◽

Rutile Structure ◽

In Situ Method

Polyacrylonitrile-based activated carbon fiber (PAN-ACF)/SnO2 composites were synthesized by sol-gel and in-situ chemical synthesis method, respectively, and characterized by XRD, TGA, and SEM. The electrochemical properties of the resultant composites as negative electrodes in lithium-ion battery were also studied to investage the influence of different synthetic methods on the structure and electrochemical properties of the composites. The results show that the SnO2 in the composites prepared by both methods has a tetragonal rutile structure but the structure and electrochemical properties are different. With the similar composition, the composites prepared by in-situ method have uniform distribution of SnO2 particles, and exhibit better cyclic performance than those made by sol-gel method. The capacity of PAN-ACF/SnO2 composites with SnO2 content of 42.9% prepared by in-situ method remains 401.2 mAh g-1 after 50 charge/discharge cycles at a current density of 50 mAh g-1.

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