N-doped porous carbons from low-temperature and single-step sodium amide activation of carbonized water chestnut shell with excellent CO2 capture performance

Rao, Linli; Liu, Shenfang; Wang, Linlin; Ma, Changdan; Wu, Jiayi; An, Liying; Hu, Xin

doi:10.1016/j.cej.2018.11.065

Cited by 189 publications

(72 citation statements)

References 66 publications

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“…For instance, at 25 C and 100 kPa, the CO 2 /N 2 selectivity of NOMC-L-0.5 and NOMC-L-1 reached up to 43.2 and 52.7 respectively, which is 34% and 64% higher than that of NOMC-L. Such high CO 2 /N 2 selectivity is better than or comparable with those achieved by the nitrogen-enriched microporous carbonaceous sorbents produced by biomass carbonization and chemical activation, [60][61][62] though NOMCs have relatively low CO 2 capture capacities.…”

Section: Co 2 Adsorption Propertiesmentioning

confidence: 86%

Hydrothermal synthesis of nitrogen-doped ordered mesoporous carbon via lysine-assisted self-assembly for efficient CO₂ capture

Wan

Xiao

et al. 2020

RSC Adv.

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Section: Co 2 Adsorption Propertiesmentioning

confidence: 86%

Hydrothermal synthesis of nitrogen-doped ordered mesoporous carbon via lysine-assisted self-assembly for efficient CO₂ capture

Wan

Xiao

et al. 2020

RSC Adv.

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“…There are many papers published using biomass carbon materials for CO 2 capture or energy storage in supercapacitors. Lots of raw materials such as water chestnut shell, waste bagasse and so on were used as precursors to prepared activated carbon. However, it can be found that most of the research focuses on single application characteristic, few people have studied the synergistic properties of biochar materials in terms of CO 2 capture and supercapacitors.…”

Section: Introductionmentioning

confidence: 99%

Preparation of activated biomass carbon from pine sawdust for supercapacitor and CO ₂ capture

Quan

Gao

2020

Int J Energy Res

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Summary Biomass based carbon has captured more and more attention because it is environmentally friendly and has properties of low cost and ideal sustainability. In this study, three kinds of activated biomass carbons (ie, ABC‐700, ABC‐800 and ABC‐900) were first carbonized through pine sawdust pyrolysis and then activated using KOH under three different activation temperatures (ie, 700°C, 800°C and 900°C). The structure properties of the prepared activated biomass carbons were characterized by N2‐adsorption/desorption, SEM, TEM, XRD, Raman, XPS, TG and ultimate analysis. To clarify the activation mechanism, the gas products produced during KOH activation process were measured online with an ETG gas analyzer. The performance of the activated biomass carbons derived from pine sawdust for supercapacitor and CO2 capture was then evaluated. The predominant gas products during the activation process are H2 and CO. It indicates that the porous structure was created by using an enhanced etching reaction between carbon atoms and KOH. An increment of the activation temperature from 700 to 900°C results in the increase of surface area (from 1728.66 to 2330.89 m2/g) and total pore volume (from 0.671 to 1.914 cm3/g). Among the three samples, ABC‐900 exhibits the maximal specific capacitance of 175.6 F·g−1 and high energy density of 24.39 Wh·kg−1 at the 0.5 A·g−1. And the ABC‐700 shows the maximal CO2 capture capacity of 4.21 mmol/g and high selectivity of CO2 over N2 at 298 K and 1 bar. In addition, ABC‐700 also has excellent stability and reproducibility after 15 times adsorption‐desorption cycles. The unexceptionable electrochemical performance and adsorption capacity of the biomass‐carbons show its broad application prospects in the field of supercapacitors and CO2 capture.

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“…In some previous studies, sodium amide (NaNH 2 ) was found to be both an activator and a nitrogen source. [22][23][24] Compared with potassium hydroxide (KOH), using NaNH 2 as an activator, is less corrosive to the equipment. At the same time, the activation temperature was lower (T < 600 C).…”

Section: Introductionmentioning

confidence: 99%

One‐pot synthesis of high N‐doped porous carbons derived from a N‐rich oil palm biomass residue in low temperature for CO ₂ capture

et al. 2020

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Summary Porous carbon materials have been widely used for CO2 adsorption, but their preparation was subject to conditions such as raw material cost, activator corrosion, and temperature. In this study, nitrogen‐doped porous carbonaceous adsorbents were prepared in a low temperature region (400‐550°C) by one‐step composite nitrogen doping method, using low‐cost oil residue as raw materials and less corrosive NaNH2 as activator. The CO2 adsorption performances of the prepared N‐doped porous adsorbents were systematically explored. The results showed that optimal oil residue‐derived carbonaceous adsorbent owned excellent amount of CO2 adsorption up to 3.51 and 5.63 mmol/g at 298 and 273 K under 1 bar, respectively. It was discovered that the congenerous influences of porous structure, nitrogen content and Vn of the adsorbent affected their CO2 adsorption performances under 1 bar. Importantly, these oil residue porous carbonaceous adsorbent also was verified owning fine selectivity of the CO2 over N2 (15.7), which attributed to its high Vn and nitrogen content. Furthermore, optimal sample OAC‐500‐2.5 owned medium Qst (21‐26 kJ/mol), which was beneficial practical application. This work may inspire new sparks on novel nitrogen‐doped adsorbent with inexpensive precursor, low activation temperature and simple preparative tactic, indicating that the nitrogen‐doped sample is promising in the practical situation of CO2 adsorption.

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N-doped porous carbons from low-temperature and single-step sodium amide activation of carbonized water chestnut shell with excellent CO2 capture performance

Cited by 189 publications

References 66 publications

Hydrothermal synthesis of nitrogen-doped ordered mesoporous carbon via lysine-assisted self-assembly for efficient CO₂ capture

Hydrothermal synthesis of nitrogen-doped ordered mesoporous carbon via lysine-assisted self-assembly for efficient CO₂ capture

Preparation of activated biomass carbon from pine sawdust for supercapacitor and CO ₂ capture

One‐pot synthesis of high N‐doped porous carbons derived from a N‐rich oil palm biomass residue in low temperature for CO ₂ capture

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N-doped porous carbons from low-temperature and single-step sodium amide activation of carbonized water chestnut shell with excellent CO2 capture performance

Cited by 189 publications

References 66 publications

Hydrothermal synthesis of nitrogen-doped ordered mesoporous carbon via lysine-assisted self-assembly for efficient CO2 capture

Hydrothermal synthesis of nitrogen-doped ordered mesoporous carbon via lysine-assisted self-assembly for efficient CO2 capture

Preparation of activated biomass carbon from pine sawdust for supercapacitor and CO 2 capture

One‐pot synthesis of high N‐doped porous carbons derived from a N‐rich oil palm biomass residue in low temperature for CO 2 capture

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Hydrothermal synthesis of nitrogen-doped ordered mesoporous carbon via lysine-assisted self-assembly for efficient CO₂ capture

Hydrothermal synthesis of nitrogen-doped ordered mesoporous carbon via lysine-assisted self-assembly for efficient CO₂ capture

Preparation of activated biomass carbon from pine sawdust for supercapacitor and CO ₂ capture

One‐pot synthesis of high N‐doped porous carbons derived from a N‐rich oil palm biomass residue in low temperature for CO ₂ capture