One-step fabrication of N-doped activated carbon by NH3 activation coupled with air oxidation for supercapacitor and CO2 capture applications

Ruan, Wei; Wang, Yuan; Liu, Chaoran; Xu, Di; Hu, Ping; Ye, Yueyuan; Wang, Dechao; Liu, Yunquan; Zheng, Zhifeng; Wang, Duo

doi:10.1016/j.jaap.2022.105710

Cited by 12 publications

(4 citation statements)

References 82 publications

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“…The surface features of all samples were further analyzed by FT−IR, as illustrated in Figure 3c. The broad band at 3437 cm −1 is assigned to O−H and/or N−H stretching vibrations [15,41,42], while two weak peaks at 2924 cm −1 and 2847 cm −1 are ascribed to the C−H stretching vibrations [40,43]. The moderately intense peak centered at 1631 cm −1 belongs to C=C/C−N/C−O [11,15].…”

Section: Physico-chemical Properties Of Nopcsmentioning

confidence: 99%

“…The graphitization degree of all samples was further analyzed via Raman spectra as shown in Figure 3b. Two prominent broad peaks located at approximately 1344 cm −1 (D band) and 1575 cm −1 (G band) are clearly observed, which is ascribed to amorphous/defective carbon and graphitic carbon, respectively [27,40]. The ratios of D band to G band (I D /I G ) for NOPC1, NOPC3 and NOPC9 are higher than NOPC0, indicating that more defects were introduced into carbon network by the activation treatment of Na 2 CO 3 at high temperatures.…”

Section: Physico-chemical Properties Of Nopcsmentioning

confidence: 99%

“…The ratios of D band to G band (ID/IG) for NOPC1, NOPC3 and NOPC9 are higher than NOPC0, indicating that more defects were introduced into carbon network by the activation treatment of Na2CO3 at high temperatures. In fact, this enhanced degree of disorder can offer more active sites for improving CO2 adsorption capacity [28,40]. The surface features of all samples were further analyzed by FT−IR, as illustrated in Figure 3c.…”

Section: Physico-chemical Properties Of Nopcsmentioning

confidence: 99%

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Biomass Based N/O Codoped Porous Carbons with Abundant Ultramicropores for Highly Selective CO2 Adsorption

et al. 2023

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In this work, N/O codoped porous carbons (NOPCs) were derived from corn silk accompanied by Na2CO3 activation. The porous structures and surface chemical features of as-prepared carbon materials were tailored by adjusting the Na2CO3 mass ratio. After activation, the optimized sample (NOPC1) with abundant ultramicropores and pyrrolic N displays an enhanced CO2 adsorption capacity of 3.15 mmol g−1 and 1.95 mmol g−1 at 273 K and 298 K at 1 bar, respectively. Moreover, this sample also exhibited high IAST selectivity (16.9) and Henry’s law selectivity (15.6) for CO2/N2 at 298 K as well as moderate heat adsorption. Significantly, the joint effect between ultramicropore structure and pyrrolic N content was found to govern the CO2 adsorption performance of NOPCs samples.

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Section: Physico-chemical Properties Of Nopcsmentioning

confidence: 99%

Section: Physico-chemical Properties Of Nopcsmentioning

confidence: 99%

Section: Physico-chemical Properties Of Nopcsmentioning

confidence: 99%

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Biomass Based N/O Codoped Porous Carbons with Abundant Ultramicropores for Highly Selective CO2 Adsorption

et al. 2023

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“…The procedure includes converting a precursor material into carbon through carbonization, followed by activation using a physical agent like steam or carbon dioxide [16]. Nitrogen doping can be achieved during the physical activation process by introducing nitrogen-containing gases, such as ammonia [24] or other gases that contain nitrogen atoms [9]. The synthesis of nitrogen-doped activated carbons (N-ACs) through physical methods involves processes that modify the carbon structure without the use of chemical agents [10].…”

Section: Production Of N-doped Activated Carbonmentioning

confidence: 99%

Exploring the versatile production techniques and applications of nitrogen-doped activated carbon

Joia,

Atamanov,

Umbetkaliev

et al. 2024

Therm. Sci. Eng.

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Carbon based materials are really an integral component of our lives and widespread research regarding their properties was conducted along this process. The addition of dopants to carbon materials, either during the production process or later on, has been actively investigated by researchers all over the world who are looking into how doping can enhance the performance of materials and how to overcome the current difficulties. This study explores synthesis methods for nitrogen-doped carbon materials, focusing on advancements in adsorption of different pollutants like CO2 from air and organic, inorganic and ions pollutants from water, energy conversion, and storage, offering novel solutions to environmental and energy challenges. It addresses current issues with nitrogen-doped carbon materials, aiming to contribute to sustainable solutions in environmental and energy sciences. Alongside precursor types and synthesis methods, a significant relationship exists between nitrogen content percentage and adsorption capacity in nitrogen-doped activated carbon. Nitrogen content ranges from 0.64% to 11.23%, correlating with adsorption capacities from 0.05 mmol/g to 7.9 mmol/g. Moreover, an electrochemical correlation is observed between nitrogen atom increase and specific capacity in nitrogen-doped activated carbon electrodes. Higher nitrogen percentage corresponds to increased specific capacity and capacity retention. This comprehensive analysis sheds light on the potential of nitrogen-doped carbon materials and highlights their significance in addressing critical environmental and energy challenges.

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N-doped porous carbon nanofibers derived from N-rich cross-linked polymer for high-performance supercapacitors

Peng,

Huang,

Zeng

et al. 2023

Ionics

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One-step fabrication of N-doped activated carbon by NH3 activation coupled with air oxidation for supercapacitor and CO2 capture applications

Cited by 12 publications

References 82 publications

Biomass Based N/O Codoped Porous Carbons with Abundant Ultramicropores for Highly Selective CO2 Adsorption

Biomass Based N/O Codoped Porous Carbons with Abundant Ultramicropores for Highly Selective CO2 Adsorption

Exploring the versatile production techniques and applications of nitrogen-doped activated carbon

N-doped porous carbon nanofibers derived from N-rich cross-linked polymer for high-performance supercapacitors

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