Template-free synthesis of hierarchical porous carbon with controlled morphology for CO2 efficient capture

Chen, Changwei; Huang, Huang; Yu, Yanke; He, Chi; Albilali, Reem; Pan, Hua

doi:10.1016/j.cej.2018.07.161

Cited by 105 publications

(56 citation statements)

References 85 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…To investigate the strength of interaction between the adsorbents and CO 2 molecules, the isosteric heat of adsorption ( Q st ) was calculated by the CO 2 adsorption isotherms at 25 and 35 °C with the Clausius–Clapeyron equation ( eq 3 ). 57 , 58 In Figure 6 a, CO 2 isotherms of NDC-800 and NDPC-1-800 at 25 and 35 °C were presented to research the effect of CO 2 uptakes with temperature. Obviously, the CO 2 uptake of NDPC-1-800 decreased following the increasing temperature, indicating its physisorption process.…”

Section: Results and Discussionmentioning

confidence: 99%

Constructing Hierarchically Porous N-Doped Carbons Derived from Poly(ionic liquids) with the Multifunctional Fe-Based Template for CO₂ Adsorption

et al. 2021

View full text Add to dashboard Cite

Nitrogen-doped hierarchical porous carbons with a rich pore structure were prepared via direct carbonization of the poly(ionic liquid) (PIL)/potassium ferricyanide compound. Thereinto, the bisvinylimidazolium-based PIL was a desirable carbon source, and potassium ferricyanide as a multifunctional Fe-based template, could not only serve as the pore-forming agent, including metallic components (Fe and Fe 3 C), potassium ions (etching carbon framework during carbonization), and gas generated during the pyrolysis process, but also introduce the N atoms to porous carbons, which were in favor of CO 2 capture. Moreover, the hierarchically porous carbon NDPC-1-800 (NDPC, nitrogen-doped porous carbon) had taken advantage of the highest specific surface area, exhibiting an excellent CO 2 adsorption capacity and selectivity compared with NDC-800 (NDC, nitrogen-doped carbon) directly carbonized from the pure PIL. Furthermore, its hierarchical porous architectures played an important part in the process of CO 2 capture, which was described briefly as follows: the synergistic effect of mesopores and micropores could accelerate the CO 2 molecules’ transportation and storage. Meanwhile, the appropriate microporous size distribution of NDPC-1-800 was conducive to enhancing CO 2 /N 2 selectivity. This study was intended to open up a new pathway for designing N-doped porous carbons combining both PILs and the multifunctional Fe-based template potassium ferricyanide with wonderful gas adsorption and separation performance.

show abstract

Section: Results and Discussionmentioning

confidence: 99%

Constructing Hierarchically Porous N-Doped Carbons Derived from Poly(ionic liquids) with the Multifunctional Fe-Based Template for CO₂ Adsorption

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Among free N-doped porous carbons, HKC-800-1 shows superior CO 2 adsorption of 217 mg/g relative to commercial activated carbon (123.2 mg/g), 48 OMC (132 mg/g), 49 OM-CNS (175.1 mg/g), 50 CA-HC200 (198.4 mg/g), 51 and PC500 (190.5 mg/g), 52 and it was also comparable with PMMC-800 (237.6 mg/g), 53 NET2-2-700-2 (228.8 mg/g), 54 and L2600 (233.2 mg/g). 36 Compared with these N-doped porous carbons, such as salt-templated carbons with arginine (147.8 mg/g), 56 FC4 (178.2 mg/g), 57 OTSS-1-550 (191.4 mg/g), 58 N-PHCS-900 (194.5 mg/g), 59 microporous carbon from fern leaves (198.9 mg/g), 60 and PDA 0.3 /MA 0.7 -2 (202.4 mg/g), 62 the CO 2 uptake of our porous carbons was also decent. HKC-800-1 was also comparable with c-CBAP-1N (223.5 mg/g), 66 H150-800 (228.1 mg/g), 67 NPC500 (235.8 mg/g), 52 Bamboo-1-973 (233.2 mg/g), 33 and AC-KOH-W-2-700 (237.6 mg/g).…”

Section: Resultsmentioning

confidence: 99%

Selectable Microporous Carbons Derived from Poplar Wood by Three Preparation Routes for CO₂ Capture

et al. 2020

View full text Add to dashboard Cite

Biomass-derived porous carbons are one kind of sustainable, extensive, and flexible carbon material for CO 2 capture. Here, we prepared several microporous carbons from poplar wood by three preparation routes. Especially, the residues of the poplar wood after the bioethanol process were explored as precursors to prepare activated carbon by KOH and ZnCl 2 activation. By the adjustment of the preparation routes and the optimization of the activation conditions, these porous carbons exhibited diversified morphology (sponge, nanosheets, and honeycomb structure), tunable porosity (specific surface areas: 511–2153 m 2 /g), and narrow micropore distribution (0.55–1.2 nm). These carbons had a high CO 2 uptake of up to 217 mg/g at 273 K and 1 bar, which was comparable with those of many N-doped porous carbons, and possessed moderate isosteric heat of CO 2 adsorption (21.1–43.2 kJ/mol), good cyclic ability, and high CO 2 /N 2 selectivity (Henry’s law: 44.0). The results indicated that CO 2 uptake of these carbons was mainly decided by their micropore volume ( d < 1.0 nm) at 273 K and 1 bar. This work provides an important reference for preparing promising CO 2 adsorbents with tunable structures from similar biomass resources.

show abstract

“…Besides CO 2 uptake, the energy consumption of adsorbent also need to be considered in the practical industrial application, so macropores or mesopores were introduced into the adsorbent to minimize diffusion pressure in the adsorbent [ 12 , 13 , 14 ]. Therefore, it could be known that the hierarchical porous carbon would achieve an excellent comprehensive CO 2 adsorption performance.…”

Section: Introductionmentioning

confidence: 99%

Construction of Oxygen-Rich Carbon Foams for Rapid Carbon Dioxide Capture

Duan

Zou

et al. 2020

Materials

View full text Add to dashboard Cite

As carbon dioxide (CO2) adsorbents, porous materials with high specific surface areas and abundant CO2-philic groups always exhibit high CO2 capacities. Based on this consensus, a category of oxygen-rich macroporous carbon foams was fabricated from macroporous resorcinol-formaldehyde resins (PRFs), which were obtained via an oil-in-water concentrated emulsion. By the active effect of potassium hydroxide (KOH) at high temperatures, the resultant carbon foams (ACRFs) possessed abundant micropores with rich oxygen content simultaneously. At the same time, most of the ACRFs could retain the marcoporous structure of their precursor. It is found that porosity of ACRFs was mainly determined by carbonization temperature, and the highest specific surface areas and total pore volume of ACRFs could reach 2046 m2/g and 0.900 cm3/g, respectively. At 273 K, ACRFs showed highest CO2 capacity as 271 mg/g at 1 bar and 91.5 mg at 15 kPa. Furthermore, it is shown that the ultra-micropore volume was mainly responsible for the CO2 capacities of ACRFs at 1 bar, and CO2 capacities at 15 kPa were mainly affected by the oxygen content. It is also found that the presence of macropores would accelerate ACRFs adsorbing CO2. This study provides ideas for designing a porous CO2 adsorbent.

show abstract

Template-free synthesis of hierarchical porous carbon with controlled morphology for CO2 efficient capture

Cited by 105 publications

References 85 publications

Constructing Hierarchically Porous N-Doped Carbons Derived from Poly(ionic liquids) with the Multifunctional Fe-Based Template for CO₂ Adsorption

Constructing Hierarchically Porous N-Doped Carbons Derived from Poly(ionic liquids) with the Multifunctional Fe-Based Template for CO₂ Adsorption

Selectable Microporous Carbons Derived from Poplar Wood by Three Preparation Routes for CO₂ Capture

Construction of Oxygen-Rich Carbon Foams for Rapid Carbon Dioxide Capture

Contact Info

Product

Resources

About

Template-free synthesis of hierarchical porous carbon with controlled morphology for CO2 efficient capture

Cited by 105 publications

References 85 publications

Constructing Hierarchically Porous N-Doped Carbons Derived from Poly(ionic liquids) with the Multifunctional Fe-Based Template for CO2 Adsorption

Constructing Hierarchically Porous N-Doped Carbons Derived from Poly(ionic liquids) with the Multifunctional Fe-Based Template for CO2 Adsorption

Selectable Microporous Carbons Derived from Poplar Wood by Three Preparation Routes for CO2 Capture

Construction of Oxygen-Rich Carbon Foams for Rapid Carbon Dioxide Capture

Contact Info

Product

Resources

About

Constructing Hierarchically Porous N-Doped Carbons Derived from Poly(ionic liquids) with the Multifunctional Fe-Based Template for CO₂ Adsorption

Constructing Hierarchically Porous N-Doped Carbons Derived from Poly(ionic liquids) with the Multifunctional Fe-Based Template for CO₂ Adsorption

Selectable Microporous Carbons Derived from Poplar Wood by Three Preparation Routes for CO₂ Capture