scholarly journals Preparation of nitrogen-doped cotton stalk microporous activated carbon fiber electrodes with different surface area from hexamethylenetetramine-modified cotton stalk for electrochemical degradation of methylene blue

2017 ◽  
Vol 7 ◽  
pp. 656-664 ◽  
Author(s):  
Kunquan Li ◽  
Zhang Rong ◽  
Ye Li ◽  
Cheng Li ◽  
Zheng Zheng
Keyword(s):  
Methylene Blue ◽  
Activated Carbon ◽  
Carbon Fiber ◽  
Surface Area ◽  
Activated Carbon Fiber ◽  
Electrochemical Degradation ◽  
Cotton Stalk ◽  
Nitrogen Doped ◽  
Carbon Fiber Electrodes

scholarly journals Photocatalytic Degradation of Methylene Blue Using Zinc Oxide Nanorods Grown on Activated Carbon Fibers

2021 ◽  
Vol 13 (9) ◽  
pp. 4729
Author(s):  
Borhan Albiss ◽  
Muna Abu-Dalo
Keyword(s):  
Methylene Blue ◽  
Zinc Oxide ◽  
Activated Carbon ◽  
Carbon Fiber ◽  
Photocatalytic Degradation ◽  
Surface Area ◽  
Activated Carbon Fiber ◽  
Zinc Oxide Nanorods ◽  
Oxide Nanorods ◽  
Photocatalytic Activities

In this work, the synthesis, characterization, and photocatalytic performance of zinc oxide/activated carbon fiber nanocomposites prepared by hydrothermal method were investigated. Zinc oxide nanoparticles (ZnO-NP) were deposited as seeds on porous activated carbon fiber (ACF) substrates. Then, zinc oxide nanorods (ZnO-NR) were successfully grown on the seeds and assembled on the fibers’ surface in various patterns to form ZnO-NR/ACF nanocomposites. The nanocomposites were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectrometry, UV–vis diffuse reflectance spectra (DRS), and Brunauer–Emmett–Teller (BET) surface area analysis. SEM images showed that brush-like and flower-like ZnO-NR patterns were grown uniformly on the ACF surface with sizes depending on the ZnO-NP concentration, growth time, and temperature. The FTIR spectrum confirmed the presence of the major vibration bands, especially the absorption peaks representing the vibration modes of the COOH (C = O and C = C) functional group. Adsorption and photocatalytic activities of the synthesized catalytic adsorbents were compared using methylene blue (MB) as the model pollutant under UV irradiation. ZnO-NR/ACF nanocomposites showed excellent photocatalytic activity (~99% degradation of MB in 2 h) compared with that of bare ZnO-NR and ACF. Additionally, a recycling experiment demonstrated the stability of the catalyst; the catalytic degradation ratio of ZnO-NR/ACF reached more than 90% after five successive runs and possessed strong adsorption capacity and high photocatalytic ability. The enhanced photocatalytic activities may be related to the effects of the relatively high surface area, enhanced UV-light absorption, and decrease of charge carrier recombination resulting from the synergetic adsorption–photocatalytic degradation effect of ZnO and ACF.

Capacitance Limits of Activated Carbon Fiber Electrodes in Aqueous Electrolyte

2008 ◽  
Vol 155 (1) ◽  
pp. F1 ◽  
Author(s):  
Chun-Ling Liu ◽  
Wensheng Dong ◽  
Gaoping Cao ◽  
Jingren Song ◽  
Lang Liu ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Carbon Fiber ◽  
Aqueous Electrolyte ◽  
Activated Carbon Fiber ◽  
Carbon Fiber Electrodes

Effect of ACF Properties on the Electric Adsorption Performance of the ACF Electrode

2012 ◽  
Vol 209-211 ◽  
pp. 1990-1994 ◽  
Author(s):  
Qin Zhang ◽  
Zhao Hui Zhang ◽  
Liang Wang ◽  
Zi Long Zhang ◽  
Xing Fei Guo
Keyword(s):  
Activated Carbon ◽  
Carbon Fiber ◽  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Activated Carbon Fiber ◽  
Adsorption Performance ◽  
Carbon Fiber Cloth ◽  
Activated Carbon Fiber Cloth ◽  
The Relationship

The properties of four different activated carbon fiber cloth (ACF), such as specific surface area, pore volumes and pore size distribution, were evaluated. The relationship between ACF properties and its electrosorption performance was analyzed. The experimental results show that pore structure has more influence on the performance of ACF electrode than that of specific surface area for ACF material. More abundant mesopores and shallower pore channels for ACF is favorable to improve the specific capacitance and electrosorption capacity of ions.

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