Synthesis of nitrogen-rich nanoporous carbon materials with C3N-type from ZIF-8 for methanol adsorption

Ma, Xiancheng; Li, Liqing; Zeng, Zheng; Chen, Ruofei; Wang, Chunhao; Zhou, Ke; Su, Changqing; Li, Hailong

doi:10.1016/j.cej.2019.01.132

Cited by 97 publications

(37 citation statements)

References 35 publications

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“…The broad peak indicated the structure of nonordered carbon materials and low degrees of graphitization. 38 Moreover, a peak at 43°was supposed to be found, and it was not very obvious in this pattern, which was assigned to (100) plane of graphite. It also indicated a low degree of graphitization.…”

Section: Xrd Analysismentioning

confidence: 96%

Nitrogen‐doping activated biomass carbon from tea seed shell for CO ₂ capture and supercapacitor

2019

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Activated carbon is a promising material that has a broad application prospect.In this work, biomass (tea seed shell) was used to prepare activated carbon with KOH activation (referred to as AC), and nitrogen was doped in activated carbon using melamine as the nitrogen source (referred to as NAC-x, where x is the mass ratio of melamine and activated carbon). The obtained activated biomass carbon (activated bio-carbon) samples were characterized by Brunauer-Emmett-Teller (BET)-specific surface area analysis, ultimate analysis, X-ray photoelectron spectroscopy (XPS) analysis, Raman spectrum analysis, and X-ray diffraction (XRD) patterns. The specific surface areas of activated bio-carbons were 1503.20 m 2 /g (AC), 1064.54 m 2 /g (NAC-1), 1187.93 m 2 /g (NAC-2), 1055.32 m 2 /g (NAC-3), and 706.22 m 2 /g (NAC-4), revealing that nitrogen-doping process leads to decrease in specific surface area. XPS analysis revealed that the main nitrogen-containing functional groups were pyrrolic-N and pyridinic-N. The capacity of CO 2 capture and electrochemical performance of activated bio-carbon samples were investigated. The CO 2 capturing capacity followed this order: AC (3.15 mmol/g) > NAC-2 (2.75 mmol/g) > NAC-1 (2.69 mmol/g) > NAC-3 (2.44 mmol/g) > NAC-4 (1.95 mmol/g) at 298 K at 1 bar, which is consistent with the order of specific surface area. The specific surface area played a dominant role in CO 2 capturing capacity. As for supercapacitor, AC-4 showed the highest specific capacitance (168 F/g) at the current density of 0.5 A/g, but NAC-2 showed the best electrochemical performance (89 F/g) at 2 A/g. Nitrogen-containing functional groups and specific surface area both had an important impact on electrochemical performance. In general, NAC-3 and NAC-2 produced excellent electrochemical performance. Compared with NAC-3, less melamine was used to prepare NAC-2; therefore, NAC-2 was considered as the best activated bio-carbon for supercapacitor for 141 F/g (at 0.5 A/g), 108 F/g (at 1 A/g), and 89 F/g (at 2 A/g) in this work.

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Section: Xrd Analysismentioning

confidence: 96%

Nitrogen‐doping activated biomass carbon from tea seed shell for CO ₂ capture and supercapacitor

2019

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“…Deconvolution of the N 1 s spectra revealed the presence of pyridinic‐N (N‐6, 398.4 ± 0.2 eV), pyrrolic‐N (N‐5, 399.8 ± 0.1 eV), graphitic‐N (N‐Q, 400.7 ± 0.1 eV) and oxidized‐N (N‐O, 402.0 ± 0.1 eV) 37 . The N‐containing functional groups were used for improving the gas adsorption due to the electrostatic attraction 27 . Similarly, the results were provided by fitting O 1 s spectra in Figure 4C.…”

Section: Resultsmentioning

confidence: 99%

“…The theoretical calculation approach was employed by density functional theory (DFT) calculations involving interactions of HCHO with graphene or doped graphene using the DMol 3 code for the software of Materials Studio package. To stimulate the electron exchange, structure optimizations and corresponding total energy calculations of the most stable geometries were based on the Perdew–Burke–Ernzerhof (PBE) within the generalized gradient approximation (GGA) 27 . The double numerical basis set with polarization (DNP) was used to describe the atomic orbitals, and the DFT semicore pseudopotential (DSPP) was selected to establish the type of core processing 28,29 .…”

Section: Methodsmentioning

confidence: 99%

“…To stimulate the electron exchange, structure optimizations and corresponding total energy calculations of the most stable geometries were based on the Perdew-Burke-Ernzerhof (PBE) within the generalized gradient approximation (GGA). 27 The double numerical basis set with polarization (DNP) was used to describe the atomic orbitals, and the DFT semicore pseudopotential (DSPP) was selected to establish the type of core processing. 28,29 A real-space cutoff of 5.0 Å was used.…”

Section: Theoretical Calculation Of Hcho Adsorptionmentioning

confidence: 99%

“…Deconvolution of the N 1s spectra revealed the presence of pyridinic-N (N-6, 398.4 ± 0.2 eV), pyrrolic-N (N-5, 399.8 ± 0.1 eV), graphitic-N (N-Q, 400.7 ± 0.1 eV)and oxidized-N (N-O, 402.0 ± 0.1 eV) 37. The N-containing functional groups were used for improving the gas adsorption due to the F I G U R E 1 (A-C) The cumulative pore volume curve and pore size distributions and (D) nitrogen adsorption/desorption isotherms of various carbon materials F I G U R E 2 Scanning electron microscopy (SEM) images of various carbon materials: (A) UFC, (B) commercial activated carbon (CAC), (C) UFAC-700, and (D) Raman spectrum electrostatic attraction 27. Similarly, the results were provided by fitting O 1s spectra inFigure 4C.…”

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confidence: 99%

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The role of pore structure and nitrogen surface groups in the adsorption behavior of formaldehyde on resin‐based carbons

Liu

et al. 2020

Surface & Interface Analysis

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This study focused on the role of pore structures and nitrogen surface functional groups in the formaldehyde (HCHO) adsorption on the carbonized resin-based materials (UFC). After comparing the optimal sample UFAC-700 obtained by the activation of UFC at 700 C with the commercial activated carbon (CAC) and other UFC, the HCHO adsorption capacity for UFAC-700 (12.30 mg g −1) is more than three times and 10 times of that for CAC and UFC, respectively. Abundant pore structures could provide more adsorption sites for the initial stage of HCHO adsorption. Moreover, according to the density functional theory (DFT) calculations, pyrrolic-N could enhance the adsorption energy and polar interaction of HCHO due to electrostatic force between the positively charged H attached to the nitrogen group and the negatively charged O atoms in the HCHO molecule. This study introduced a novel way to specifically design the surface modifications for volatile organic compounds (VOCs) adsorption.

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Adsorption of Volatile Organic Compounds (VOCs) on Oxygen‐rich Porous Carbon Materials Obtained from Glucose/Potassium Oxalate

Wang

Gao

et al. 2021

Chemistry An Asian Journal

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To investigate the effects of oxygen-containing functional groups on the adsorption of volatile organic compounds (VOCs) with different polarity, oxygen-rich porous carbon materials (OPCs) were synthesized by heat treatment of glucose/potassium oxalate material. The carbon material had a large specific surface area (1697 m 2 g À 1 ) and a high oxygen content (18.95 at.%). OPC exhibited high adsorption capacity of toluene (309 mg g À 1 ) and methanol (447 mg g À 1 ). The specific surface area and total pore volume determined the adsorption capacity of toluene and methanol at the high-pressure range, while the oxygen-containing groups became the main factor affecting the methanol adsorption at the low-pressure range due to the hydrogen bond interaction through the density functional theory (DFT) calculations. This study provides an important hint for developing a novel O-doped adsorbent for the VOCs adsorption applications and analyzing the role of oxygencontaining groups in the VOCs adsorption under the lowpressure range.

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Synthesis of nitrogen-rich nanoporous carbon materials with C3N-type from ZIF-8 for methanol adsorption

Cited by 97 publications

References 35 publications

Nitrogen‐doping activated biomass carbon from tea seed shell for CO ₂ capture and supercapacitor

Nitrogen‐doping activated biomass carbon from tea seed shell for CO ₂ capture and supercapacitor

The role of pore structure and nitrogen surface groups in the adsorption behavior of formaldehyde on resin‐based carbons

Adsorption of Volatile Organic Compounds (VOCs) on Oxygen‐rich Porous Carbon Materials Obtained from Glucose/Potassium Oxalate

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Synthesis of nitrogen-rich nanoporous carbon materials with C3N-type from ZIF-8 for methanol adsorption

Cited by 97 publications

References 35 publications

Nitrogen‐doping activated biomass carbon from tea seed shell for CO 2 capture and supercapacitor

Nitrogen‐doping activated biomass carbon from tea seed shell for CO 2 capture and supercapacitor

The role of pore structure and nitrogen surface groups in the adsorption behavior of formaldehyde on resin‐based carbons

Adsorption of Volatile Organic Compounds (VOCs) on Oxygen‐rich Porous Carbon Materials Obtained from Glucose/Potassium Oxalate

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Nitrogen‐doping activated biomass carbon from tea seed shell for CO ₂ capture and supercapacitor

Nitrogen‐doping activated biomass carbon from tea seed shell for CO ₂ capture and supercapacitor