Synthesis of novel and tunable Micro-Mesoporous carbon nitrides for Ultra-High CO2 and H2S capture

Tabarkhoon, Farnaz; Abolghasemi, Hossein; Rashidi, Alimorad; Bazmi, Mohammad; Alivand, Masood S.; Tabarkhoon, Farnoush; Farahani, Mehran Vashaghani; Esrafili, Mehdi D.

doi:10.1016/j.cej.2022.140973

Cited by 34 publications

(9 citation statements)

References 82 publications

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“…The first weight reduction between 30 and 200 °C (Region A) is mainly related to moisture desorption and the partial decomposition of acidic groups. [ 23 ] The second mass loss was recorded in the 200—350 °C temperature range (Region B) which can be related to the dehydration of the carbon structure. The major mass loss began at 350 °C due to the densification of MCS and continued until 800 °C (Region C).…”

Section: Resultsmentioning

confidence: 99%

Facile Fabrication of Monodispersed Carbon Sphere: A Pathway Toward Energy‐Efficient Direct Air Capture (DAC) Using Amino Acids

Alivand

McQuillan

Momeni

et al. 2023

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Direct removal of carbon dioxide (CO 2 ) from the atmosphere, known as direct air capture (DAC) is attracting worldwide attention as a negative emission technology to control atmospheric CO 2 concentrations. However, the energy-intensive nature of CO 2 absorption-desorption processes has restricted deployment of DAC operations. Catalytic solvent regeneration is an effective solution to tackle this issue by accelerating CO 2 desorption at lower regeneration temperatures. This work reports a one-step synthesis methodology to prepare monodispersed carbon nanospheres (MCSs) using trisodium citrate as a structure-directing agent with acidic sites. The assembly of citrate groups on the surface of MCSs enables consistent spherical growth morphology, reduces agglomeration and enhances water dispersibility. The functionalization-assisted synthesis produces uniform, hydrophilic nanospheres of 100-600 nm range. This work also demonstrates that the prepared MCSs can be further functionalized with strong Brønsted acid sites, providing high proton donation ability. Furthermore, the materials can be effectively used in a wide range of amino acid solutions to substantially accelerate CO 2 desorption (25.6% for potassium glycinate and 41.1% for potassium lysinate) in the DAC process. Considering the facile synthesis of acidic MCSs and their superior catalytic efficiency, these findings are expected to pave a new path for energy-efficient DAC.

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Section: Resultsmentioning

confidence: 99%

Facile Fabrication of Monodispersed Carbon Sphere: A Pathway Toward Energy‐Efficient Direct Air Capture (DAC) Using Amino Acids

Alivand

McQuillan

Momeni

et al. 2023

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“…Countless solid adsorbents, including carbon (Tabarkhoon et al 2023), zeolites (Cheung andHedin 2014, Al -Naddaf et al 2020), amine-functionalized porous (Yang et al 2021), and metal-organic frameworks (Mahajan andLahtinen 2022, Younas et al 2020), have been thoroughly researched to adsorb CO2. Due to their potent capacity to chemisorbed low CO2 concentration from wet flue gas, aminefunctionalized porous materials have undergone the greatest research among these adsorbents (Gaikwad et al 2021, Alkadhem, Elgzoly and Onaizi 2020, Li et al 2022.…”

Section: Chemisorption Methodsmentioning

confidence: 99%

Advanced Indoor CO2 Capture Technologies: A Comprehensive Review and Future Perspectives

Yuan

Song

Yang

et al. 2023

Preprint

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The prevalence of indoor air pollution, primarily stemming from human activities, has led to increasing concerns regarding elevated CO2 concentrations in indoor environments. Prolonged exposure to such environments has been linked to reduced productivity, headaches, nausea, and more severe health risks, such as Sick Building Syndrome. Consequently, the development of efficient methods to reduce CO2 concentrations in indoor air is of utmost importance. This review offers a comprehensive analysis of cutting-edge indoor CO2 capture technologies, delving into the adsorption performance of solvents produced via various techniques. Our findings highlight the emergence of innovative materials that significantly enhance the indoor adsorption process; nevertheless, further investigation into reaction kinetics and stability remains imperative for continued progress. Among the methods assessed, Thermal Swing Adsorption and Wet Impregnation demonstrate superior suitability for indoor CO2 capture applications. Importantly, this review also emphasizes the potential of novel ventilation strategies, incorporating both internal ventilation and CO2 capture devices, to not only reduce indoor CO2 concentrations but also promote energy efficiency in buildings.

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“…Rashidi and colleagues recently synthesized high‐nitrogen‐containing MCN with tunable pores for ultra‐high gas adsorption using a method similar to hard templating. [ 69 ] They began by polymerizing a carbon nitride precursor on SiO 2 under continuous reflux for 6 h at 90 °C. The polymerized material was then dried overnight and carbonized at 600 °C for 5 h before being washed with HF to completely remove the SiO 2 template ( Figure ).…”

Section: Synthesis Of Mcnmentioning

confidence: 99%

Mesoporous Carbon Nitrides as Emerging Materials: Nanoarchitectonics and Biosensing Applications

Patel¹,

Baskar²,

Tiburcius³

et al. 2023

Advanced Sensor Research

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Mesoporous carbon nitrides (MCNs) are versatile materials and find use in applications such as catalysis, gas capture, and remediation. The development of new forms of MCNs, such as C3N5, C3N6, and C3N7, has expanded their scope further. One of the least reviewed applications of these materials is in the field of sensing, though it has been demonstrated that their sensing abilities are on par with other comparable materials. Their excellent properties such as high surface area, tunable stoichiometry, adjustable electronic structure, and basicity, make them well‐suited for the adsorption and detection of a wide range of analytes. Herein, the new findings in the synthesis of MCNs and their exciting prospects for sensing are reviewed. The review is divided into two broad sections: 1) discussions on the synthesis of MCNs using hard/soft templating, sol–gel, and template‐free methods; and 2) their capabilities for photoelectrochemical, optical, and quartz microbalance‐based sensing. The findings from the recent literature are showcased and the covered topics are explained with comparative analyses. The current review is a timely presentation of the concerned topic and will serve as a useful piece of information for developing advanced sensors using MCN based materials.

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Synthesis of novel and tunable Micro-Mesoporous carbon nitrides for Ultra-High CO2 and H2S capture

Cited by 34 publications

References 82 publications

Facile Fabrication of Monodispersed Carbon Sphere: A Pathway Toward Energy‐Efficient Direct Air Capture (DAC) Using Amino Acids

Facile Fabrication of Monodispersed Carbon Sphere: A Pathway Toward Energy‐Efficient Direct Air Capture (DAC) Using Amino Acids

Advanced Indoor CO2 Capture Technologies: A Comprehensive Review and Future Perspectives

Mesoporous Carbon Nitrides as Emerging Materials: Nanoarchitectonics and Biosensing Applications

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