One-pot synthesis of potassium benzoate-derived porous carbon for CO2 capture and supercapacitor application

Lu, Tingyan; Ma, Changdan; Demir, Müslüm; Yu, Qiyun; Aghamohammadi, Parya; Wang, Linlin; Hu, Xin

doi:10.1016/j.seppur.2022.122053

Cited by 28 publications

(9 citation statements)

References 56 publications

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“…Moreover, the micropore volume ratio of NP-HPLC-0.75 reached 52.5%, outperforming NP-HPLC-0.5 (18.0%) and NP-HPLC-1 (41.8%), thereby providing ample sites for charge accumulation . The Raman shifts observed at 1343 and 1582 cm –1 , as depicted in Figure c, corresponded to the D and G bands, , respectively. This spectral feature is indicative of a carbon defect and graphitized structure.…”

Section: Results and Discussionmentioning

confidence: 95%

Fabricating N, P-Codoped Hierarchical Porous Carbons from Lignin via Assembled Templating and Activation Strategy for High-Performance Supercapacitors

Fu,

Yang,

Zhao

et al. 2024

Ind. Eng. Chem. Res.

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The heteroatom-doped carbons are widely recognized as optimal electrode materials for energy storage yet challenges in their structural regulation. Here, an assembled templating and activation strategy is developed to synthesize N, P-codoped hierarchical porous carbons from lignin (NP-HPLCs) for supercapacitors. The synthesis process involved carbonizing a lignin/F127/Mg2(OH)2CO3 assembly with KOH and (NH4)2HPO4, wherein the generated MgO template and KOH activator facilitated the formation of micromesopores, while (NH4)2HPO4 served as an N/P dopant. The resultant NP-HPLCs exhibited a high accessible surface area of 1302 m2/g and N, P-codoped levels (N: 4.40 atom %, P: 1.47 atom %) with three-dimensional hierarchical porous structures, thereby promoting ion diffusion and transport. Upon these advantages, the carbon electrode achieved a remarkable specific capacitance of up to 358 F/g at 0.5 A/g. Moreover, the fabricated supercapacitor delivered a high energy density of 6.76 Wh/kg at 137 W/kg with excellent cyclic stability. This work offers a valuable reference for the structural design of heteroatom-doped porous carbons for advanced energy storage devices.

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Section: Results and Discussionmentioning

confidence: 95%

Fabricating N, P-Codoped Hierarchical Porous Carbons from Lignin via Assembled Templating and Activation Strategy for High-Performance Supercapacitors

Fu,

Yang,

Zhao

et al. 2024

Ind. Eng. Chem. Res.

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“…Additionally, these samples slightly present typical type IV isotherms with a small hysteresis loop at a pressure of 0.9–1.0, indicating the presence of some macropore structure. [ 55 , 56 ].…”

Section: Resultsmentioning

confidence: 99%

One-Pot Synthesis of Melamine Formaldehyde Resin-Derived N-Doped Porous Carbon for CO2 Capture Application

Bai

Huang

et al. 2023

Molecules

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The design and synthesis of porous carbons for CO2 adsorption have attracted tremendous interest owing to the ever-soaring concerns regarding climate change and global warming. Herein, for the first time, nitrogen-rich porous carbon was prepared with chemical activation (KOH) of commercial melamine formaldehyde resin (MF) in a single step. It has been shown that the porosity parameters of the as-prepared carbons were successfully tuned by controlling the activating temperature and adjusting the amount of KOH. Thus, as-prepared N-rich porous carbon shows a large surface area of 1658 m2/g and a high N content of 16.07 wt%. Benefiting from the unique physical and textural features, the optimal sample depicted a CO2 uptake of up to 4.95 and 3.30 mmol/g at 0 and 25 °C under 1 bar of pressure. More importantly, as-prepared adsorbents show great CO2 selectivity over N2 and outstanding recyclability, which was prominently important for CO2 capture from the flue gases in practical application. An in-depth analysis illustrated that the synergetic effect of textural properties and surface nitrogen decoration mainly determined the CO2 capture performance. However, the textural properties of carbons play a more important role than surface functionalities in deciding CO2 uptake. In view of cost-effective synthesis, outstanding textural activity, and the high adsorption capacity together with good selectivity, this advanced approach becomes valid and convenient in fabricating a unique highly efficient N-rich carbon adsorbent for CO2 uptake and separation from flue gases.

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“…In the past decade, substantial research efforts have been directed at exploring solid adsorbents, such as carbons, − metal–organic frameworks (MOFs), , zeolites, covalent-organic frameworks (COFs), , and porous polymers, − for the objective of CO 2 removal. Within this broad spectrum of adsorbents, porous carbons have received great attention due to their potential as very promising sorbents for the extraction of CO 2 .…”

Section: Introductionmentioning

confidence: 99%

Sulfur-Enriched Nanoporous Carbon: A Novel Approach to CO₂ Adsorption

Liu,

Zhi,

et al. 2024

ACS Appl. Nano Mater.

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Carbon dioxide (CO 2 ) intake plays a vital role in sustaining the environmental balance by influencing global carbon dynamics and climatic stability. This work addresses the production of sulfur-doped porous nanocarbons (SDCs) as prospective sorbents for CO 2 capture. SDCs were fabricated by utilizing coconut shell as a carbon precursor and potassium persulfate as both a chemical activating agent and a sulfur dopant. The incorporation of sulfur functionalities into carbon matrices creates structural variability and active sites, boosting CO 2 absorption capabilities. Sulfur's peculiar electrical structure allows greater intermolecular interactions with CO 2 , enhancing adsorption affinities. According to the experimental data, the CO 2 uptake was best measured as 3.37 mmol/g at 0 °C and 1 bar and 2.56 mmol/g at 25 °C and 1 bar. The results show that the higher porosity of SDC materials adds to a large amplification in the CO 2 uptake capability. The work underlines the delicate interaction between sulfur doping, morphological porosity, and surface reactivity in enhancing the effectiveness of CO 2 sequestration. SDC materials hold considerable promise in tackling the present ecological concerns and developing CO 2 collection techniques. The suggested singlestep synthesis technique described here provides a sustainable and environmentally friendly method for synthesizing SDCs for carbon capture applications.

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One-pot synthesis of potassium benzoate-derived porous carbon for CO2 capture and supercapacitor application

Cited by 28 publications

References 56 publications

Fabricating N, P-Codoped Hierarchical Porous Carbons from Lignin via Assembled Templating and Activation Strategy for High-Performance Supercapacitors

Fabricating N, P-Codoped Hierarchical Porous Carbons from Lignin via Assembled Templating and Activation Strategy for High-Performance Supercapacitors

One-Pot Synthesis of Melamine Formaldehyde Resin-Derived N-Doped Porous Carbon for CO2 Capture Application

Sulfur-Enriched Nanoporous Carbon: A Novel Approach to CO₂ Adsorption

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One-pot synthesis of potassium benzoate-derived porous carbon for CO2 capture and supercapacitor application

Cited by 28 publications

References 56 publications

Fabricating N, P-Codoped Hierarchical Porous Carbons from Lignin via Assembled Templating and Activation Strategy for High-Performance Supercapacitors

Fabricating N, P-Codoped Hierarchical Porous Carbons from Lignin via Assembled Templating and Activation Strategy for High-Performance Supercapacitors

One-Pot Synthesis of Melamine Formaldehyde Resin-Derived N-Doped Porous Carbon for CO2 Capture Application

Sulfur-Enriched Nanoporous Carbon: A Novel Approach to CO2 Adsorption

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Sulfur-Enriched Nanoporous Carbon: A Novel Approach to CO₂ Adsorption