Nitrogen-doped hierarchically constructed interconnected porous carbon nanofibers derived from polyaniline (PANI) for highly selective CO2 capture and effective methanol adsorption

Li, Yao; Wang, Yage; Chen, Bingqing; Wang, Lanyun; Yang, Juan; Wang, Binbin

doi:10.1016/j.jece.2022.108847

Cited by 29 publications

(9 citation statements)

References 70 publications

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“…Figure S4 displays that more oxygen-containing functional groups such as CO and C–O–C were introduced into HCS when CSs were formed inside HCS, which facilitated the polarity of the carbon framework and promoted the adsorption capacity for the polar toluene . At the same time, the oxygen-containing functional groups would form a strong interaction with aromatic ring p-electrons of toluene when they were close to each other, which was also conducive to capture toluene. , Compared with commercial activated carbon and other adsorbents, C 0.1 @HCS also had higher toluene adsorption capacity ,,,, (Table ).…”

Section: Resultsmentioning

confidence: 99%

“…On the basis of the fitting curves and kinetic parameters, the adsorption mechanism was obtained. In this paper, the pseudo-first-order model, pseudo-second-order model, and Bangham model were applied to fit the adsorption data. , The above four models are given in eqs – q t = q normale ( 1 − e − k 1 t ) q t = k 2 q normale 2 t 1 + k 2 q normale t q t = q normale − q normale e k 3 t z where q t is the adsorption amount of toluene at time t and q e is the adsorption capacity at equilibrium (mg·g –1 ); k 1 and k 2 are the pseudo-first-order adsorption rate constants (min –1 ) and pseudo-second-order adsorption rate constants (min –1 ), respectively; k 3 is the Bangham constant (min –1 ); and z is the constant.…”

Section: Methodsmentioning

confidence: 99%

“…18 At the same time, the oxygen-containing functional groups would form a strong interaction with aromatic ring pelectrons of toluene when they were close to each other, which was also conducive to capture toluene. 9,50 Compared with commercial activated carbon and other adsorbents, C 0.1 @HCS also had higher toluene adsorption capacity 22,23,34,48,49 (Table 3).…”

Section: Dynamic Adsorption Experimentsmentioning

confidence: 99%

“…In this paper, the pseudo-firstorder model, pseudo-second-order model, and Bangham model were applied to fit the adsorption data. 33,34 The above four models are given in eqs 2−4…”

Section: Adsorption Performance Evaluationmentioning

confidence: 99%

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New Porous Carbon Material Derived from Carbon Microspheres Assembled in Hollow Carbon Spheres and Its Application to Toluene Adsorption

Qin

Asamoah

et al. 2023

Langmuir

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In this paper, a new porous carbon material adsorbent was prepared using carbon microspheres assembled in hollow carbon spheres (HCS) with a hydrothermal method. Transmission electron microscopy, scanning electron microscopy, X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, X-ray diffraction, and Raman spectroscopy were used to characterize the adsorbents. It was found that the diameter of carbon microspheres derived from 0.1 mol/L glucose was about 130 nm, which could be inserted inside HCS (pore size was 370−450 nm). The increase in glucose concentration would promote the diameter of carbon microspheres (CSs), and coarse CSs could not be loaded in the mesopores or macropores of HCS. Thus, the C 0.1 @HCS adsorbent had the highest Brunauer−Emmett−Teller surface area (1945 m 2 /g) and total pore volume (1.627 cm 3 /g). At the same time, C 0.1 @HCS posed a suitable ratio of micropores and mesopores, which could provide adsorption sites and volatile organic compound diffusion channels. Moreover, oxygen-containing functional groups −OH and C�O in CSs were also introduced into HCS, and the adsorption capacity and regenerability performance of the adsorbents were improved. The dynamic adsorption capacity of C 0.1 @HCS for toluene reached 813 mg/g, and the Bangham model was more suitable for describing the toluene adsorption process. The adsorption capacity was stably kept above 770 mg/g after eight adsorption−desorption cycles.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Dynamic Adsorption Experimentsmentioning

confidence: 99%

“…In this paper, the pseudo-firstorder model, pseudo-second-order model, and Bangham model were applied to fit the adsorption data. 33,34 The above four models are given in eqs 2−4…”

Section: Adsorption Performance Evaluationmentioning

confidence: 99%

See 2 more Smart Citations

New Porous Carbon Material Derived from Carbon Microspheres Assembled in Hollow Carbon Spheres and Its Application to Toluene Adsorption

Qin

Asamoah

et al. 2023

Langmuir

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“…It can be observed that these carbon nanotubes were composed of amorphous carbon, and nitrogen elements were uniformly distributed on the carbon nanotubes. Li et al [68] used self-synthesized nanofiber polyaniline as a precursor, and mixed it with KOH (an activating agent). The nitrogen-doped porous carbon fibers were generated by pyrolyzing the sample in a N 2 atmosphere.…”

Section: In Situ Doping Methodsmentioning

confidence: 99%

Research Advances on Nitrogen-Doped Carbon Materials in COx Hydrogenation

Deng,

Xu,

et al. 2023

Atmosphere

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The excessive consumption of fossil fuels has resulted in massive carbon emissions and serious ecological and environmental crises. Therefore, achieving the efficient utilization of waste carbon sources is considered as an important pathway to addressing the aforementioned issues in the context of carbon neutrality. Developing and designing suitable catalyst materials has become the key to converting COx into valuable platform chemicals and value-added liquid fuels (e.g., CO, CH4, CH3OH, and C2+ hydrocarbons). A moderate interaction between nitrogen-doped carbon materials and active metals is more favorable for the progress of the COx hydrogenation reaction compared to traditional metal oxide carriers. In this work, we comprehensively summarize the synthesis methods of N-doped carbon materials and the relevant research progress in the field of COx hydrogenation. In addition, a general assessment of carbon-based catalysts for COx hydrogenation reactions, concerning the support and metal properties, the activity and product selectivity, and their interactions is systematically discussed. Finally, this review discusses the roles of N-doped carbon materials, the current challenges, and future development directions.

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N‐doped Porous Carbon Derived from the Pyrolysis of a Polydopamine‐coated Hypercross‐linked Polymer for Enhanced CO₂ Adsorption

Wang,

Liu,

Zhou

et al. 2024

Chemistry A European J

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Porous carbon materials can simultaneously capture and convert carbon dioxide, helping to reduce greenhouse gas emissions and using carbon dioxide as a feedstock for the production of valuable chemicals or fuel. In this work, a series of N‐doped porous carbons (PDA@HCP(x:y)‐T) was prepared; the CO2 adsorption capacity of the prepared PDA@HCP(x:y)‐T was enhanced by coating polydopamine (PDA) on a hypercross‐linked polymer (HCP) and then adjusting the mass ratio of PDA to HCP and the carbonization temperature. The results showed that the prepared PDA@HCP(1:1)‐850 exhibited a high CO2 adsorption capacity due to abundant micropores (0.6762 cm3/g), a high specific surface area (1220.8 m²/g), and moderate surface nitrogen content (2.75%). Notably, PDA@HCP(1:1)‐850 exhibited the highest CO2 uptake of 6.46 mmol/g at 0 °C and 101 kPa. Critically, these N‐doped porous carbons can also be used as catalysts for the reaction of CO2 with epichlorohydrin to form chloropropylene carbonate, with chloropropylene carbonate yielding up to 64% and selectivity of the reaction reaching 94%. As a result, these N‐doped porous carbons could serve as potential candidates for CO2 capture and conversion due to their high reactivity, excellent CO2 uptake, and good catalytic performance.

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Nitrogen-doped hierarchically constructed interconnected porous carbon nanofibers derived from polyaniline (PANI) for highly selective CO2 capture and effective methanol adsorption

Cited by 29 publications

References 70 publications

New Porous Carbon Material Derived from Carbon Microspheres Assembled in Hollow Carbon Spheres and Its Application to Toluene Adsorption

New Porous Carbon Material Derived from Carbon Microspheres Assembled in Hollow Carbon Spheres and Its Application to Toluene Adsorption

Research Advances on Nitrogen-Doped Carbon Materials in COx Hydrogenation

N‐doped Porous Carbon Derived from the Pyrolysis of a Polydopamine‐coated Hypercross‐linked Polymer for Enhanced CO₂ Adsorption

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Nitrogen-doped hierarchically constructed interconnected porous carbon nanofibers derived from polyaniline (PANI) for highly selective CO2 capture and effective methanol adsorption

Cited by 29 publications

References 70 publications

New Porous Carbon Material Derived from Carbon Microspheres Assembled in Hollow Carbon Spheres and Its Application to Toluene Adsorption

New Porous Carbon Material Derived from Carbon Microspheres Assembled in Hollow Carbon Spheres and Its Application to Toluene Adsorption

Research Advances on Nitrogen-Doped Carbon Materials in COx Hydrogenation

N‐doped Porous Carbon Derived from the Pyrolysis of a Polydopamine‐coated Hypercross‐linked Polymer for Enhanced CO2 Adsorption

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Product

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N‐doped Porous Carbon Derived from the Pyrolysis of a Polydopamine‐coated Hypercross‐linked Polymer for Enhanced CO₂ Adsorption