scholarly journals Self-Regeneration Performance and Characterization of Silver-Containing Activated Carbon Fibers Coated by Titanium Dioxide

Polymers ◽  
2019 ◽  
Vol 11 (6) ◽  
pp. 983 ◽  
Author(s):  
Wenjing Liu ◽  
Wang Han ◽  
Minghui Zhang ◽  
Zeyu Guo
Keyword(s):  
Activated Carbon ◽  
Carbon Fibers ◽  
Synergistic Effects ◽  
Micropore Volume ◽  
Tio2 Films ◽  
Activated Carbon Fibers ◽  
Agno3 Solution ◽  
Two Factors ◽  
Principal Pathway

In this study, wood-based activated carbon fibers (WACF) were modified by Ag nanoparticles (AgNPs) and TiO2 films. The coating of TiO2 films decreased the AgNPs agglomeration and exfoliation on WACF. As the soaking concentration of AgNO3 solution (Sconc) increased, AgNPs size and content increased, while the pore volume (especially micropore volume) of fibers reduced. However, at higher Sconc in the range of 0.2 to0.4 mol/L, only slight variations in AgNPs content and pore structure were observable for WACF/TiO2/Ag (Ag-containing WACF coated by TiO2 film). WACF/TiO2/Ag-0.1 (0.1 was the soaking concentration of AgNO3 solution, mol/L) represented the best self-regeneration performance under the visible light irradiation. The self-regeneration performance of WACF/TiO2/Ag was determined by the synergistic effects of two factors: adsorption and photodegradation. The abundant pores of WACF/TiO2/Ag-0.1 increased the methylene blue (MB) concentration of TiO2 surrounding and facilitated the MB photodegradation. Meanwhile, their suitable Ag content enhanced MB photodegradation. Furthermore, the principal pathway of a chemical reaction between Ag+ and WACF was interpreted based on the data of surface elemental constituents and surface functional groups.

Characterization of Activated Carbon Fibers by CO2Adsorption

Langmuir ◽  
1996 ◽  
Vol 12 (11) ◽  
pp. 2820-2824 ◽  
Author(s):  
D. Cazorla-Amorós ◽  
J. Alcañiz-Monge ◽  
A. Linares-Solano
Keyword(s):  
Activated Carbon ◽  
Carbon Fibers ◽  
Activated Carbon Fibers ◽  
Characterization Of Activated Carbon

Improved Capacitive Behavior of Birnessite Type Mn Oxide Coated on Activated Carbon Fibers

2021 ◽  
Author(s):  
Zahra Abedi ◽  
Desiree Leistenschneider ◽  
Douglas Ivey ◽  
Weixing Chen
Keyword(s):  
Activated Carbon ◽  
Carbon Fibers ◽  
Hydrothermal Process ◽  
Total Pore Volume ◽  
Annealing Process ◽  
Activated Carbon Fibers ◽  
Capacitive Behavior ◽  
Mn Oxide ◽  
Reducing Environment

Abstract Birnessite type Mn oxide (potassium birnessite hydrate) powder (as-δ-MnO2) with a layered microstructure was prepared via a hydrothermal process. To improve its capacitive performance, the microstructure was thermally modified (annealed) at 400 oC (400-δ-MnO2) in a N2 reducing environment. By removing the hydrated cations (K+) layers inserted between the main layers of birnessite, damaging the microstructure, intercalation/deintercalation of the electrolyte species (Li+1) became more effective. Characterization of as-δ-MnO2 and 400-δ-MnO2 revealed that no phase transformation occurred during the annealing process. The microstructure became less crystalline and the total pore volume increased from 0.20 cm3 g-1 to 0.43 cm3 g-1, while the oxidation state of Mn remained 4+ after annealing the as-δ-MnO2 at 400 oC. The 400-δ-MnO2 sample was then coated on asphaltene derived activated carbon fibers (ACF-400-δ-MnO2) to improve the performance by making use of the high electrical conductivity and capacitive behavior of ACF. Coating the 400-δ-MnO2 sample led to a significant increase in the capacitance (328 F g-1 and 195 F g-1 for ACF-400-δ-MnO2 and 400-δ-MnO2 at 0.4 A g-1, respectively), improved energy and power values (~7 kW kg-1 at ~4.2 Wh kg-1 for ACF-400-δ-MnO2 and 240 W kg-1 at 2.4 Wh kg-1 for 400-δ-MnO2) and improved cycling behavior.

scholarly journals Preparation and photocatalytic activity characterization of activated carbon fiber–BiVO4 composites

RSC Advances ◽  
2018 ◽  
Vol 8 (43) ◽  
pp. 24665-24672 ◽  
Author(s):  
Chencheng Zhang ◽  
Pingfang Han ◽  
Xiaoping Lu ◽  
Qinghui Mao ◽  
Jiangang Qu ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Performance Evaluation ◽  
Activated Carbon ◽  
Carbon Fibers ◽  
Photocatalytic Performance ◽  
Activated Carbon Fiber ◽  
Activated Carbon Fibers ◽  
Experimental Conditions ◽  
Characterization Of Activated Carbon

Herein, we describe the hydrothermal immobilization of BiVO4 on activated carbon fibers, using Reactive Black KN-B photocatalytic performance evaluation and establishing the experimental conditions yielding maximalphotocatalytic activity.

Characterization of TiO2 Loaded on Activated Carbon Fibers and Its Photocatalytic Reactivity

2007 ◽  
Vol 25 (4) ◽  
pp. 553-557 ◽  
Author(s):  
Bing-Yu Jia ◽  
Li-Yan Duan ◽  
Chuan-Li Ma ◽  
Chun-Ming Wang
Keyword(s):  
Activated Carbon ◽  
Carbon Fibers ◽  
Activated Carbon Fibers

Characterization of activated carbon fibers by small angle x-ray scattering

Carbon ◽  
1998 ◽  
Vol 36 (3) ◽  
pp. 309-312 ◽  
Author(s):  
D. Cazorla-Amorós ◽  
C.Salinas-Martínez de Lecea ◽  
J. Alcañiz-Monge ◽  
M. Gardner ◽  
A. North ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Carbon Fibers ◽  
Small Angle ◽  
Activated Carbon Fibers ◽  
X Ray ◽  
X Ray Scattering ◽  
Characterization Of Activated Carbon ◽  
Ray Scattering

Surface reactivity of nanoporous carbons: preparation and physicochemical characterization of sulfonated activated carbon fibers

2019 ◽  
Vol 10 (8) ◽  
pp. 2923-2939 ◽  
Author(s):  
Liudmyla M. Grishchenko ◽  
Vitaliy E. Diyuk ◽  
Ruslan T. Mariychuk ◽  
Anna V. Vakaliuk ◽  
Valentina Z. Radkevich ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Carbon Fibers ◽  
Physicochemical Characterization ◽  
Surface Reactivity ◽  
Activated Carbon Fibers ◽  
Nanoporous Carbons
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