Unlocking the potential of N-doped porous Carbon: Facile synthesis and superior CO2 adsorption performance

Separation and Purification Technology, Journal Year: 2023, Volume and Issue: 333, P. 125891 - 125891

Published: Nov. 30, 2023

Language: Английский

---

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

ACS Applied Nano Materials, Journal Year: 2024, Volume and Issue: 7(5), P. 5434 - 5441

Published: Feb. 26, 2024

Carbon dioxide (CO2) intake plays a vital role in sustaining the environmental balance by influencing global carbon dynamics and climatic stability. This work addresses production of sulfur-doped porous nanocarbons (SDCs) as prospective sorbents for CO2 capture. SDCs were fabricated utilizing coconut shell precursor potassium persulfate both chemical activating agent sulfur dopant. The incorporation functionalities into matrices creates structural variability active sites, boosting absorption capabilities. Sulfur's peculiar electrical structure allows greater intermolecular interactions with CO2, enhancing adsorption affinities. According to experimental data, uptake was best measured 3.37 mmol/g at 0 °C 1 bar 2.56 25 bar. results show that higher porosity SDC materials adds large amplification capability. underlines delicate interaction between doping, morphological porosity, surface reactivity effectiveness sequestration. hold considerable promise tackling present ecological concerns developing collection techniques. suggested single-step synthesis technique described here provides sustainable environmentally friendly method synthesizing capture applications.

Language: Английский

---

Enhanced CO₂ Adsorption Capacity in Highly Porous Carbon Materials Derived from Melamine-Formaldehyde Resin

Energy & Fuels, Journal Year: 2024, Volume and Issue: 38(14), P. 13186 - 13195

Published: July 5, 2024

Language: Английский

---

Kinetic and mechanistic study of CO2 adsorption on activated hydrochars

Journal of CO2 Utilization, Journal Year: 2024, Volume and Issue: 81, P. 102716 - 102716

Published: Feb. 22, 2024

Four activated hydrochars (AHCs) were obtained by hydrothermal carbonization of pine sawdust followed physical and chemical activation in mild conditions. The effects the activating agents on porous structure AHCs analysed using nitrogen adsorption isotherms. Their CO2 capacity was assessed means carbon dioxide isotherms at 25 50 ºC thermogravimetry, compared with a commercial (AC). SBET values greater than 2000 m2/g obtained. A narrow micropore volume 0.392 cm3/g for hydrochar KHCO3. highest uptake 3.3 mmol/g (145.2 mg/g) room temperature (25 ºC) Three kinetic models (pseudo-first, pseudo-second fractional order Avrami's models) used to examine rate parameters uptake, model giving most accurate prediction adsorption. intraparticle diffusion Boyd's film-diffusion applied identify mechanism.

Language: Английский

---

Recent Progress on Porous Carbons for Carbon Capture

Langmuir, Journal Year: 2024, Volume and Issue: 40(16), P. 8327 - 8351

Published: April 12, 2024

High emission of carbon dioxide (CO

Language: Английский

---

Hollow branched fiber hierarchical porous carbon as recyclable adsorbents and catalysts for efficient CO2 capture and conversion

Sustainable materials and technologies, Journal Year: 2024, Volume and Issue: 40, P. e00880 - e00880

Published: March 3, 2024

Language: Английский

---

Sustainable CO2 Capture: N,S-Codoped Porous Carbons Derived from Petroleum Coke with High Selectivity and Stability

Molecules, Journal Year: 2025, Volume and Issue: 30(2), P. 426 - 426

Published: Jan. 20, 2025

CO2 capture from the flue gas is a promising approach to mitigate global warming. However, regulating carbon-based adsorbent in terms of textural and surface modification still challenge. To overcome this issue, present study depicts development cost-effective high-performance adsorbents derived petroleum coke, an industrial by-product, using two-step process involving thiourea KOH activation. A series N,S-codoped porous carbons was synthesized by varying activation temperatures quantity. The optimized sample exhibited high specific area 1088 m2/g, narrow micropore volume 0.52 cm3/g, considerable heteroatom doping (1.57 at.% nitrogen 0.19 sulfur). as-prepared achieved adsorption capacity 3.69 5.08 mmol/g at 1 bar, 25 °C 0 °C, respectively, along with CO2/N2 selectivity 17. Adsorption kinetics showed 90% equilibrium uptake within 5 min, while cyclic studies revealed excellent stability 97% retention after five cycles. Thermodynamic analysis indicated moderate isosteric heat (Qst) values ranging 18 47 kJ/mol, ensuring both strong efficient desorption. These findings highlight potential coke-derived for sustainable applications.

Language: Английский

---

Cellulose-based aerogel derived N, B-co-doped porous biochar for high-performance CO2 capture and supercapacitor

International Journal of Biological Macromolecules, Journal Year: 2024, Volume and Issue: 269, P. 132078 - 132078

Published: May 3, 2024

Language: Английский

---

Waste-derived tuff for CO2 Capture: Enhanced CO2 adsorption performances by Cation-Exchange tailoring

Journal of Industrial and Engineering Chemistry, Journal Year: 2024, Volume and Issue: 138, P. 153 - 164

Published: March 30, 2024

Mitigating greenhouse gas emissions through CO2 capture from industrial flue gases is imperative for addressing climate change. This article delves into the potential of natural tuff, derived construction and demolition (C&D) waste, as an affordable sustainable adsorbent post-combustion capture. By tailoring tuff structure chemical composition cation-exchange, crucial role cation type in enhancing its textural properties, particularly microporosity specific surface area, has been highlighted. Notably, Li- Na-exchanges greatly enhance these indicating a heightened The work further explores dynamic adsorption both untreated modified fixed-bed reactor under low partial pressures (<0.2 atm), examining effects extra-framework nature (Na+, Li+) composition, influence NH4+ pre-treatment. Results show that Na- Li-exchanged exhibit enhanced uptake (up to 1 mmol g−1) compared (0.54 g−1), with Li-exchange resulting highest capacity due superior properties stronger ion-quadrupole interactions molecules. multi-cyclic stability synthesized samples also assessed; regardless cation-exchange type, all provide stable performances over 10 consecutive adsorption/desorption cycles.

Language: Английский

---

Pore properties and CO2 adsorption performance of activated carbon prepared from various carbonaceous materials

Carbon Resources Conversion, Journal Year: 2024, Volume and Issue: unknown, P. 100237 - 100237

Published: April 1, 2024

In this study we prepared porous carbon samples from various carbonaceous materials, such as biomass and coal, evaluated their CO2 adsorption performance. We first activated by heat treatment of the materials with a mixture melamine nitrogen source K2CO3 chemical activator. then investigated pore properties in detail tested performance samples. found that well-developed pores could be using low ash content. Significant correlation was among specific surface area (SSA: 1840–2640 m2/g), micropore (0.85–1.46 cm3/g) volume, samples, indicating SSA volume affected (400–530 mg/g). Based on these results, devised guidelines for producing high

Language: Английский

---