Preparation of Mesoporous Activated Carbon from Jackfruit PPI-1 Waste and Development of Different Surface Functional Groups

Nagalakshmi, T. V.; Emmanuel, K. A.; Babu, Ch. Suresh; Chakrapani, Ch.; Divakar, P. Paul

doi:10.18052/www.scipress.com/ilcpa.54.189

Cited by 10 publications

(10 citation statements)

References 18 publications

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“…The C-H stretching frequency was obtained as a broad range between 3,300 and 2,900 cm −1 . FT-IR spectrum evidently confirmed the complete formation of carbon materials ( Nagalakshmi et al, 2015 ). In order to find the purity of graphitization, Raman analysis was executed ( Supplementary Figure S3 ).…”

Section: Resultsmentioning

confidence: 74%

Development of Uniform Porous Carbons From Polycarbazole Phthalonitriles as Durable CO2 Adsorbent and Supercapacitor Electrodes

et al. 2022

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Advances in new porous materials have recognized great consideration in CO2 capture and electrochemical energy storage (EES) applications. In this study, we reported a synthesis of two nitrogen-enriched KOH-activated porous carbons prepared from polycarbazole phthalonitrile networks through direct pyrolysis protocol. The highest specific surface area of the carbon material prepared by pyrolysis of p-4CzPN polymer reaches 1,279 m2 g−1. Due to the highly rigid and reticular structure of the precursor, the obtained c-4CzPN–KOH carbon material exhibits high surface area, uniform porosity, and shows excellent CO2 capture performance of 19.5 wt% at 0°C. Moreover, the attained porous carbon c-4CzPN–KOH showed high energy storage capacities of up to 451 F g−1 in aqueous electrolytes containing 6.0 M KOH at a current density of 1 A g-1. The prepared carbon material also exhibits excellent charge/discharge cycle stability and retains 95.9% capacity after 2000 cycles, indicating promising electrode materials for supercapacitors.

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Section: Resultsmentioning

confidence: 74%

Development of Uniform Porous Carbons From Polycarbazole Phthalonitriles as Durable CO2 Adsorbent and Supercapacitor Electrodes

et al. 2022

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“…All FT-IR spectra showed the characteristic bands found in the carbonaceous materials. The bands observed at 3391, 2925, and 2358 cm −1 can be assigned to O-H stretching of hydroxyl groups [ 78 ], to C-H stretching or deformation from CH 2 to CH 3 [ 79 ], and to C-H stretching due to the presence of CH 2 -CO-group [ 78 ], respectively. The band at 1622 cm −1 is related to C=O and C-O stretching of carboxylic acid [ 80 ], while the band at 1398 cm −1 corresponds to C-O stretching vibration from the carboxyl group [ 41 ].…”

Section: Resultsmentioning

confidence: 99%

Comparative Study of Three Dyes’ Adsorption onto Activated Carbon from Chenopodium quinoa Willd and Quillaja saponaria

et al. 2022

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The present study shows porous activated carbon obtained from Chenopodium quinoa Willd and Quillaja saponaria and their use as potential adsorbents to remove three types of dyes from aqueous solutions. The adsorption results were compared with commercial charcoal to check their efficiency. All porous carbon materials were activated using carbon dioxide and steam and fully characterized. Moreover, the steam-activated samples exhibited a high total pore volume with a BET surface area of around 800 m2 g−1. Batch adsorption experiments showed that commercial charcoal is the charcoal that offered the best adsorption efficiency for tartrazine and sunset yellow FCF. However, in the case of crystal violet, all activated carbons obtained from Chenopodium quinoa Willd and Quillaja saponaria showed the best captures, outperforming commercial charcoal. Molecular dockings of the dyes on the commercial charcoal surface were performed using AutoDock Vina. The kinetic results of the three isotherm’s models for the present data follow the order: Langmuir~Freundlich > Temkin.

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“…The peak at 1740 cm −1 is indicative of the C=O stretching frequency indicating the presence of carboxylic group on carbon during its activation or on the CNT’s surface during its purification while manufacturing. The 2360 cm −1 band can be assigned to arise from the CH 2 –CO-group [ 19 ]. The absorption peaking around 3500 cm −1 is due to the O-H stretching vibrations and the peak at 3747 cm −1 is ascribed to the free hydroxyl groups [ 20 ].…”

Section: Resultsmentioning

confidence: 99%

Freestanding Activated Carbon Nanocomposite Electrodes for Capacitive Deionization of Water

et al. 2022

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Freshwater reserves are being polluted every day due to the industrial revolution. Man-made activities have adverse effects upon the ecosystem. It is thus the hour of need to explore newer technologies to save and purify water for the growing human population. Capacitive deionization (CDI) is being considered as an emerging technique for removal of excess ions to produce potable water including desalination. Herein, cost-effective activated carbon incorporated with carbon nanotubes (CNT) was used as a freestanding electrode. Further, the desalination efficiency of the designed electrodes was tuned by varying binder concentration, i.e., polyvinylidene difluoride (PVDF) in the activated carbon powder and CNT mixture. PVDF concentration of 5, 7.5, 10, and 12.5 wt% was selected to optimize the freestanding electrode formation and further applied for desalination of water. PVDF content affected the surface morphology, specific surface area, and functional groups of the freestanding electrodes. Moreover, the electrical conductivity and specific surface area changed with PVDF concentration, which ultimately affected the desalination capacity using the freestanding electrodes. This study paves the way to produce cost effective carbon-based freestanding electrodes for capacitive deionization and other applications including battery electrodes.

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Preparation of Mesoporous Activated Carbon from Jackfruit PPI-1 Waste and Development of Different Surface Functional Groups

Cited by 10 publications

References 18 publications

Development of Uniform Porous Carbons From Polycarbazole Phthalonitriles as Durable CO2 Adsorbent and Supercapacitor Electrodes

Development of Uniform Porous Carbons From Polycarbazole Phthalonitriles as Durable CO2 Adsorbent and Supercapacitor Electrodes

Comparative Study of Three Dyes’ Adsorption onto Activated Carbon from Chenopodium quinoa Willd and Quillaja saponaria

Freestanding Activated Carbon Nanocomposite Electrodes for Capacitive Deionization of Water

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