A one-step carbonization route towards nitrogen-doped porous carbon hollow spheres with ultrahigh nitrogen content for CO₂ adsorption

Abstract

Nitrogen doped porous carbon hollow spheres (N-PCHSs) with an ultrahigh nitrogen content of 15.9 wt% and a high surface area of 775 m(2) g(-1) were prepared using Melamine-formaldehyde nanospheres as hard templates and nitrogen sources. The N-PCHSs were completely characterized and were found to exhibit considerable CO2 adsorption performance (4.42 mmol g(-1)).

Lewis Basicity of Nitrogen-Doped Graphite Observed by CO2 Chemisorption

“…Captured CO 2 is typically utilized as a simple carbon-containing feedstock (C1) for generating industrially relevant organic molecules [ 1 ]. Numerous porous solid adsorbates such as zeolites [ 2 ], metal-organic frameworks [ 3 ], and mesoporous carbons [ 4 , 5 ] have been proposed for the effective capture and processing of CO 2 . Some research groups have reported that nitrogen-doped carbon materials interact more effectively with CO 2 than inactive carbon materials do [ 4 – 8 ].…”

“…Numerous porous solid adsorbates such as zeolites [ 2 ], metal-organic frameworks [ 3 ], and mesoporous carbons [ 4 , 5 ] have been proposed for the effective capture and processing of CO 2 . Some research groups have reported that nitrogen-doped carbon materials interact more effectively with CO 2 than inactive carbon materials do [ 4 – 8 ]. Furthermore, they are also expected as promising electrocatalysts for CO 2 and oxygen reduction reaction [ 8 , 9 ].…”

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

“…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).…”

Plasma-Modified N/O-Doped Porous Carbon for CO2 Capture: An Experimental and Theoretical Study

“…Nonetheless, this method has some disadvantages, such as high energy consumption and equipment corrosion . In recent years, CO 2 adsorption from flue gas by solid porous materials has attracted much attention. , CO 2 capture by porous sorbents is a highly efficient, energy-saving, and regenerable technology. , Several porous sorbents including porous carbon, zeolites, porous silica, metal–organic frameworks (MOFs), and porous polymers have been reported. − Among these porous materials, porous carbon has been regarded as an outstanding candidate for CO 2 capture because of the large surface area, good stability, low cost, and tunable textural features. − However, the adsorption performance of porous carbon is limited by the moderate interaction between the CO 2 molecule and the carbon surface. Therefore, it is necessary to develop an effective method to promote the CO 2 capture ability of porous carbon.…”