Biomass derived nitrogen and sulfur co-doped porous carbons for efficient CO2 adsorption

Ma, Changdan; Lu, Tingyan; Shao, Jiawei; Huang, Jiamei; Hu, Xin; Wang, Linlin

doi:10.1016/j.seppur.2021.119899

Cited by 159 publications

(42 citation statements)

References 61 publications

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“…However, different results were observed with corn stalk-derived ACs, in which the mesopore volume played the key role in the CO 2 adsorption capacity at a low BET surface area (< 500 m 2 /g), while the micropore area played the main role at a high BET surface area (> 500 m 2 /g) 11 . The CO 2 uptake of water caltrop shell-derived nitrogen-doped porous carbons was enforced by the synergetic effect of N content and narrow microporous volume 21 , similar to the hazelnut shell derived N and S co-doped porous carbons, in which its CO 2 uptake was dictated by the joint effect of narrow microporosity and N and S content 22 . The amine-impregnated AC exhibited considerably low BET surface area but importantly high CO 2 uptake compared with the virgin AC 23 .…”

Section: Introductionmentioning

confidence: 80%

Valorization of spent disposable wooden chopstick as the CO2 adsorbent for a CO2/H2 mixed gas purification

Koo‐Amornpattana

Jonglertjunya

Phadungbut

et al. 2022

Sci Rep

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A series of activated carbons (ACs) derived from spent disposable wooden chopsticks was prepared via steam activation and used to separate carbon dioxide (CO2) from a CO2/hydrogen (H2) mixed gas at atmospheric pressure. A factorial design was employed to investigate the effects of the activation temperature and time as well as their interactions on the production yield of ACs and their CO2 adsorption capacity. The activation temperature exhibited a much higher impact on both the production yield and the CO2 adsorption capacity of ACs than the activation time. The interaction of both parameters did not significantly affect the yield of ACs, but did affect the CO2 adsorption capacity. The optimal preparation condition provided ACs with a desirable yield of around 23.18% and a CO2 adsorption capacity of 85.19 mg/g at 25 °C and 1 atm and consumed the total energy of 225.28 MJ/kg AC or 116.4 MJ/g-mol CO2. A H2 purity of greater than 96.8 mol% was achieved from a mixed gas with low CO2 concentration (< 20 mol%) during the first 3 min of adsorption and likewise around 90 mol% from a mixed gas with a high CO2 concentration (> 30 mol%) during the first 2 min. The CO2 adsorption on the as-prepared ACs proceeded dominantly via multilayer physical adsorption and was affected by both the surface area and micropore volume of the ACs. The adsorption capacity was diminished by around 18% after six adsorption/desorption cycles. The regeneration of the as-prepared chopstick-derived ACs can be easily performed via heating at a low temperature and ambient pressure, suggesting their potential application in the temperature swing adsorption process.

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Section: Introductionmentioning

confidence: 80%

Valorization of spent disposable wooden chopstick as the CO2 adsorbent for a CO2/H2 mixed gas purification

Koo‐Amornpattana

Jonglertjunya

Phadungbut

et al. 2022

Sci Rep

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“…Additionally, the corresponding CO 2 adsorption–desorption isotherms at both temperatures are displayed in Figure 8 . All the NPCs samples demonstrate a continuous increase in CO 2 uptakes with the increasing pressure and have not yet reached saturation, suggesting that larger CO 2 uptakes can be achieved at higher pressures [ 17 , 50 ]. Additionally, these completely reversible adsorption and desorption isotherms also confirm that the CO 2 adsorption of the NPCs is physisorption in nature.…”

Section: Resultsmentioning

confidence: 99%

“…Of these, biomass resources are green, renewable, and widely available all over the world. Hence, sustainable biomass resources have been widely utilized to prepare N-doped CO 2 adsorbents in recent decades, including rice husk [ 12 ], hazelnut shell [ 17 ], water caltrop [ 18 ], lotus stalks [ 19 ], vine shoots [ 20 ], tobacco stems [ 21 ], etc. These reported biomass-based NPCs have demonstrated high surface areas and large CO 2 adsorption capacities (up to 7.42 mmol/g, 273 K/ 1.0 bar) [ 22 ], whereas the corresponding CO 2 /N 2 selectivities are less than 20 [ 17 , 23 , 24 ].…”

Section: Introductionmentioning

confidence: 99%

“…Hence, sustainable biomass resources have been widely utilized to prepare N-doped CO 2 adsorbents in recent decades, including rice husk [ 12 ], hazelnut shell [ 17 ], water caltrop [ 18 ], lotus stalks [ 19 ], vine shoots [ 20 ], tobacco stems [ 21 ], etc. These reported biomass-based NPCs have demonstrated high surface areas and large CO 2 adsorption capacities (up to 7.42 mmol/g, 273 K/ 1.0 bar) [ 22 ], whereas the corresponding CO 2 /N 2 selectivities are less than 20 [ 17 , 23 , 24 ]. Notably, the CO 2 concentration in post-combustion flue gas is relatively low (10–15%, 1 bar) [ 25 ]; high CO 2 selectivity is crucial for practical carbon capture application.…”

Section: Introductionmentioning

confidence: 99%

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One-Pot Synthesis of Rubber Seed Shell-Derived N-Doped Ultramicroporous Carbons for Efficient CO2 Adsorption

2022

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In this work, a series of novel rubber seed shell-derived N-doped ultramicroporous carbons (NPCs) were prepared by one-step high-temperature activation (500–1000 °C), using melamine as the nitrogen source and KOH as the activator. The effects of the melamine dosage and the activation temperatures on the surface chemical properties (doped N contents and N species), textural properties (surface area, pore structure, and microporosity), CO2 adsorption capacities, and CO2/N2 selectivity were thoroughly investigated and characterized. These as-prepared NPCs demonstrate controllable BET surface areas (398–2163 m2/g), ultramicroporosity, and doped nitrogen contents (0.82–7.52 wt%). It was found that the ultramicroporosity and the doped nitrogens significantly affected the CO2 adsorption and the separation performance at low pressure. Among the NPCs, highly microporous NPC-600-4 demonstrates the largest CO2 adsorption capacity of 5.81 mmol/g (273 K, 1.0 bar) and 3.82 mmol/g (298 K, 1.0 bar), as well as a high CO2/N2 selectivity of 36.6, surpassing a lot of reported biomass-based porous carbons. In addition, NPC-600-4 also shows excellent thermal stability and recycle performance, indicating the competitive application potential in practical CO2 capture. This work also presents a facile one-pot synthesis method to prepare high-performance biomass-based NPCs.

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“…The selection of such a calcination temperature was based on the previous work, with the results showing that an optimized specific surface area and total pore volume could be obtained at ≈700 °C. [ 28 ] After the thermal treatment, the furnace was cooled down before the powder was withdrawn. The collected powder was then cleaned with deionized water and hydrochloric acid until neutral.…”

Section: Methodsmentioning

confidence: 99%

Exploration of Highly Porous Biochar Derived from Dead Leaves to Immobilize LiOH·H₂O Nanoparticles for Efficient Thermochemical Heat Storage Applications

Zhang

Huang

et al. 2022

Energy Tech

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The inadequate utilization of low‐grade energy from industrial waste heat and solar energy calls for an efficient thermochemical heat storage material. The fabrication of a low‐cost but highly efficient composite comprising highly porous biochar and LiOH·H2O nanoparticles for heat storage applications is reported. The biochar is prepared by the KOH‐assisted pyrolysis of dead banyan leaves, and its microstructure and surface properties can be finely tuned by varying the KOH‐to‐biomass ratio. Such biochar can be mediated to possess a large specific surface area and total pore volume reaching as high as 1255.03 m2 g−1 and 3.65 cm3 g−1, respectively, superior to most previously reported biochar/biocarbon derived from different kinds of waste biomass. Besides, adequate functional groups and a hierarchical porous structure consisting of micropores and mesopores are demonstrated in the prepared biochar. The subsequent hydrothermal reaction with a short duration yields a biochar‐LiOH·H2O composite, where LiOH·H2O can be homogeneously immobilized with a nanoscale size within the porous biochar matrix. Thus, an enormous biochar/LiOH·H2O nanoparticles interface can be obtained, resulting in fast hydration reactions with water molecules. Consequently, a significant heat storage density of as high as 3089.6 kJ kg−1 is achieved within only 10 min, outstripping some recently reported thermochemical heat storage systems.

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Biomass derived nitrogen and sulfur co-doped porous carbons for efficient CO2 adsorption

Cited by 159 publications

References 61 publications

Valorization of spent disposable wooden chopstick as the CO2 adsorbent for a CO2/H2 mixed gas purification

Valorization of spent disposable wooden chopstick as the CO2 adsorbent for a CO2/H2 mixed gas purification

One-Pot Synthesis of Rubber Seed Shell-Derived N-Doped Ultramicroporous Carbons for Efficient CO2 Adsorption

Exploration of Highly Porous Biochar Derived from Dead Leaves to Immobilize LiOH·H₂O Nanoparticles for Efficient Thermochemical Heat Storage Applications

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Biomass derived nitrogen and sulfur co-doped porous carbons for efficient CO2 adsorption

Cited by 159 publications

References 61 publications

Valorization of spent disposable wooden chopstick as the CO2 adsorbent for a CO2/H2 mixed gas purification

Valorization of spent disposable wooden chopstick as the CO2 adsorbent for a CO2/H2 mixed gas purification

One-Pot Synthesis of Rubber Seed Shell-Derived N-Doped Ultramicroporous Carbons for Efficient CO2 Adsorption

Exploration of Highly Porous Biochar Derived from Dead Leaves to Immobilize LiOH·H2O Nanoparticles for Efficient Thermochemical Heat Storage Applications

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Product

Resources

About

Exploration of Highly Porous Biochar Derived from Dead Leaves to Immobilize LiOH·H₂O Nanoparticles for Efficient Thermochemical Heat Storage Applications