Preparation of polyacrylonitrile-based activated carbon fiber for CS2 adsorption

Li, Kunlin; Li, Kai; Wang, Chi; Ning, Ping; Sun, Xin; Song, Xin; Wang, Yingxu

doi:10.1007/s11164-020-04156-1

Cited by 12 publications

(4 citation statements)

References 38 publications

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“…Compared with HKL-ACF, the absorption peak of ACFs at 1581 cm −1 disappeared, indicating the unstable CC structure disappeared; the weakened absorption peak intensity at 2069 and 1454 cm −1 means that the corresponding CCN and C−H structure decreased; the appeared new peaks at 1264 and 1164 cm −1 indicate the new formed C−O structure or hydroxyl structure. 25 For ACF with different content of nano-SiO 2 , the peak shape is similar. At 1454 cm −1 , the 1%-ACF and 2%-ACF have no absorption peaks, while 3%-ACF and 5%-ACF have small peaks, the absorption peak at 1381 cm −1 is enhanced.…”

Section: Resultsmentioning

confidence: 85%

“…Infrared spectra were used to study the influence of the introduced nano-SiO 2 on the chemical structure of the prepared ACFs, which is shown in Figure A. Compared with HKL-ACF, the absorption peak of ACFs at 1581 cm –1 disappeared, indicating the unstable CC structure disappeared; the weakened absorption peak intensity at 2069 and 1454 cm –1 means that the corresponding CCN and C–H structure decreased; the appeared new peaks at 1264 and 1164 cm –1 indicate the new formed C–O structure or hydroxyl structure . For ACF with different content of nano-SiO 2 , the peak shape is similar.…”

Section: Results and Discussionmentioning

confidence: 99%

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Melt Spinning of Low-Cost Activated Carbon Fiber with a Tunable Pore Structure for High-Performance Flexible Supercapacitors

Qian-qian

Yin

et al. 2020

ACS Appl. Energy Mater.

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Activated carbon fibers are emerging as one of the most promising electrode for flexible supercapacitors, as they are highly conductive, lightweight, and flexible. However, the high preparation cost and unreasonable pore structure limit their practical application in supercapacitors. Here, we developed a cost effective and green method to fabricate activated carbon fiber with a controllable porous structure by employing Kraft hardwood lignin extracted from black liquor of papermaking as raw material and nano-SiO2 as hard template. The introduction of nano-SiO2 can not only form mesoporous in the fiber but also improve the graphitization degree and hydrophilicity of the fiber. The fabricated fiber with large specific surface area, appropriate pore structure, high conductivity, and strength can act as a superior electrode for flexible supercapacitors in terms of high specific capacitance, high energy and power density, outstanding rate capability, as well as good mechanical stability.

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Section: Resultsmentioning

confidence: 85%

Section: Results and Discussionmentioning

confidence: 99%

Melt Spinning of Low-Cost Activated Carbon Fiber with a Tunable Pore Structure for High-Performance Flexible Supercapacitors

Qian-qian

Yin

et al. 2020

ACS Appl. Energy Mater.

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“…With increasing levels of oxidation, sags or cavities are formed both on the surface and on the inside of CF composites. At the same time, the C-C bonds and oxygen molecules undergo oxidation reactions, resulting in the formation of C-O, CO, and O-CO . The first and most intense energy band at 284.0 eV originates from carbon atoms within aromatic carbon species sp 2 CC of the noumenon CFs, and there are two energy bands corresponding to 285.3 and 288.0 eV.…”

Section: Resultsmentioning

confidence: 99%

Ag/Reduced Graphene Oxide/Carbon Fiber Composites as Electrodes for Highly Stable and Responsive Marine Electric Field Sensors

Sun

et al. 2023

ACS Appl. Nano Mater.

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The increasing demand for maintenance-free, costeffective, and high-stability flexible electrodes is highly anticipated for the research of marine electric-field sensors, and various carbon fibers (CFs) are considered the most suitable carbon-based electrode for the purpose. Nevertheless, the conventional fabrication of acidified or nitrogenized CF electrodes did not attract great attention for commercial application, which has limitations in the case of simultaneous cost-effectiveness and longterm stability. In this study, with homemade reduced graphene oxide (rGO) load, the prepared double carbon substrate Ag-rGO-CF composite electrodes have a honeycomb rGO conductive skeleton and the dispersed Ag nanoparticles via a facile hermetic oxidation process and hydrothermal method. The prepared Ag-rGO-CF composite electrode demonstrated an outstanding electrode performance, including low resistance, high electrochemical reaction rate, and stable potential with long-term stability and low cost. The electric double-layer (EDL) structure theory from the Gouy−Chapman−Stern model and double carbon substrate mechanism between CFs and rGO with the help of Ag were clarified, whose principle is to strengthen the adsorption force and electrostatic attraction of the electrode and to offset the residual charge while reducing the thickness of the electric double layer to achieve the purpose of potential balance. The Ag-rGO-CF composite electrode has presented long-term stability and high sensitivity, especially a wide application bandwidth. The Ag-rGO-CF composite electrode made in this study is a competitive candidate material as a flexible marine electrode field sensor.

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“…Among various activation strategies, chemical activation based on the KOH is widely used because it can effectively improve the pore structures and enhance the content of the oxygen-containing functional groups of ACFs, which has a positive effect on the adsorption of sulfur compounds [ 21 ]. For instance, Li et al [ 22 ] prepared ACFs via a KOH activation method and CO 2 activation method, respectively, and used them for the adsorption of CS 2 at room temperature. The result showed that the samples prepared by the KOH activation method exhibited a better adsorption performance for CS 2 .…”

Section: Introductionmentioning

confidence: 99%

Facile Preparation of Polyacrylonitrile-Based Activated Carbon Fiber Felts for Effective Adsorption of Dipropyl Sulfide

Zhang,

He,

et al. 2024

Polymers

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Activated carbon fibers (ACFs) derived from various polymeric fibers with the characteristics of a high specific surface area, developed pore structure, and good flexibility are promising for the new generation of chemical protection clothing. In this paper, a polyacrylonitrile-based ACF felt was prepared via the process of liquid phase pre-oxidation, along with a one-step carbonization and chemical activation method. The obtained ACF felt exhibited a large specific surface area of 2219.48 m2/g and pore volume of 1.168 cm3/g, as well as abundant polar groups on the surface. Owing to the developed pore structure and elaborated surface chemical property, the ACF felt possessed an intriguing adsorption performance for a chemical warfare agent simulant dipropyl sulfide (DPS), with the highest adsorption capacity being 202.38 mg/g. The effects of the initial concentration of DPS and temperature on the adsorption performance of ACF felt were investigated. Meanwhile, a plausible adsorption mechanism was proposed based on the kinetic analysis and fitting of different adsorption isotherm models. The results demonstrated that the adsorption process of DPS onto ACF felt could be well fitted with a pseudo-second-order equation, indicating a synergistic effect of chemical adsorption and physical adsorption. We anticipate that this work could be helpful to the design and development of advanced ACF felts for the application of breathable chemical protection clothing.

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Preparation of polyacrylonitrile-based activated carbon fiber for CS2 adsorption

Cited by 12 publications

References 38 publications

Melt Spinning of Low-Cost Activated Carbon Fiber with a Tunable Pore Structure for High-Performance Flexible Supercapacitors

Melt Spinning of Low-Cost Activated Carbon Fiber with a Tunable Pore Structure for High-Performance Flexible Supercapacitors

Ag/Reduced Graphene Oxide/Carbon Fiber Composites as Electrodes for Highly Stable and Responsive Marine Electric Field Sensors

Facile Preparation of Polyacrylonitrile-Based Activated Carbon Fiber Felts for Effective Adsorption of Dipropyl Sulfide

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