Is heteroatom doping of activated carbons always a good strategy for enhancing CO2 adsorption?

Morales-Ospino, R.; Canevesi, R.L.S.; Schaefer, S.; Celzard, A.; Fierro, V.

doi:10.1016/j.cej.2023.147638

Chemical Engineering Journal

2024

DOI: 10.1016/j.cej.2023.147638

|View full text |Cite

Is heteroatom doping of activated carbons always a good strategy for enhancing CO2 adsorption?

R. Morales-Ospino,

R.L.S. Canevesi,

S. Schaefer

et al.

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...

Citation Types

Supporting

Mentioning

Contrasting

Year Published

2024

2025

Publication Types

Select...

Article5

Relationship

Self Cite0

Independent5

Authors

Journals

Cited by 10 publications

References 72 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

The Reinforced Separation of Intractable Gas Mixtures by Using Porous Adsorbents

Ke,

Xiong,

Fang

et al. 2024

Advanced Materials

View full text Add to dashboard Cite

This review focuses on the mechanism and driving force in the intractable gas separation using porous adsorbents. A variety of intractable mixtures have been discussed, including air separation, carbon capture, and hydrocarbon purification. Moreover, the separation systems are categorized according to distinctly biased modes depending on the minor differences in the kinetic diameter, dipole/quadruple moment, and polarizability of the adsorbates, or sorted by the varied separation occasions (e.g., CO2 capture from flue gas or air) and driving forces (thermodynamic and kinetic separation, molecular sieving). Each section highlights the functionalization strategies for porous materials, like synthesis condition optimization and organic group modifications for porous carbon materials, cation exchange and heteroatom doping for zeolites, and metal node‐organic ligand adjustments for MOFs. These functionalization strategies are subsequently associated with enhanced adsorption performances (capacity, selectivity, structural/thermal stability, moisture resistance, etc.) toward the analog gas mixtures. Finally, this review also discusses future challenges and prospects for using porous materials in intractable gas separation. Therein, the combination of theoretical calculation with the synthesis condition and adsorption parameters optimization of porous adsorbents may have great potential, given its fast targeting of candidate adsorbents and deeper insights into the adsorption forces in the confined pores and cages.

show abstract

The Reinforced Separation of Intractable Gas Mixtures by Using Porous Adsorbents

Ke,

Xiong,

Fang

et al. 2024

Advanced Materials

View full text Add to dashboard Cite

show abstract

Hierarchical Porous Fe₃C@Fe‐N‐C Catalysts from Tannin‐Fe(III) Complexes for Efficient Oxygen Reduction

Pérez‐Rodríguez,

Torres,

Izquierdo

et al. 2024

Small

View full text Add to dashboard Cite

The rational design of metal‐nitrogen‐doped carbons (M‐N‐C) from available and cost‐effective sources featuring high electrocatalytic performance and stability is attractive for the development of viable low‐temperature fuel cells. Herein, mimosa tannin, an abundant polyphenol easily extracted from the Mimosa plant, is used as a natural carbon source to produce a tannin‐Fe(III) coordination complex. This process is assisted by Pluronic F127, which acts as both a surfactant and a promoter of Fe‐Nx active sites. After carbonization in the presence of urea as a nitrogen precursor, this organic tannin‐Fe(III) framework produces Fe3C nanoparticles encapsulated on a Fe‐N‐C single‐atom catalyst with hierarchical porosity. The optimal catalyst, with a Pluronic F127/mimosa tannin mass ratio of 0.5, exhibits high ORR performance in both alkaline and acidic electrolytes, with half‐wave potentials of 0.87 and 0.74 V versus RHE, respectively. In addition, good performance is achieved in practical hydrogen polymer‐electrolyte membrane fuel cells using OH−‐ or H+‐conducting membranes with peak power densities of 242 and 200 mW cm−2 at cell voltages of 0.43 and 0.3 V, respectively. The synthetic approach can be explored to design new renewable M‐N‐C electrodes for electrochemical energy conversion or storage devices due to tannin's exceptional ability to coordinate metals.

show abstract

Liquid phase oxidation enables stable soft carbon anodes for potassium-ion batteries

Yao,

Liu,

Zhu

et al. 2024

Carbon Res.

View full text Add to dashboard Cite

Soft carbon has been recognized as a promising anode material for potassium-ion batteries (PIBs), due to low cost, high conductivity and low voltage platform. However, their practical application is hampered by slow storage kinetics and unsatisfactory cycle life. In this work, pitch-derived needle coke, a typical soft carbon, was incorporated with oxygenated functional groups through liquid phase oxidation by using H2O2 oxidant. When used as anode materials for PIBs, the oxidized needle coke delivers a high reversible capacity of 322.7 mAh g−1, significantly superior to that of the needle coke (237.9 mAh g−1). The enhanced electrochemical performance can be attributed to the abundant oxygenated functional groups and resultant defects on the surface of oxidized needle coke, which not only serve as extra active sites for potassium storage, but also provide sufficient pathways for K+ migration across the adjacent carbon layers. Moreover, the expanded interlayer spacing derived from H2O2 oxidation facilitates rapid K+ intercalation and deintercalation. This work offers an effective modification strategy for the fabrication of high-performance pitch-based soft carbon anodes for PIBs. Graphical Abstract

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

customersupport@researchsolutions.com

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Is heteroatom doping of activated carbons always a good strategy for enhancing CO2 adsorption?

Cited by 10 publications

References 72 publications

The Reinforced Separation of Intractable Gas Mixtures by Using Porous Adsorbents

The Reinforced Separation of Intractable Gas Mixtures by Using Porous Adsorbents

Hierarchical Porous Fe₃C@Fe‐N‐C Catalysts from Tannin‐Fe(III) Complexes for Efficient Oxygen Reduction

Liquid phase oxidation enables stable soft carbon anodes for potassium-ion batteries

Contact Info

Product

Resources

About

Is heteroatom doping of activated carbons always a good strategy for enhancing CO2 adsorption?

Cited by 10 publications

References 72 publications

The Reinforced Separation of Intractable Gas Mixtures by Using Porous Adsorbents

The Reinforced Separation of Intractable Gas Mixtures by Using Porous Adsorbents

Hierarchical Porous Fe3C@Fe‐N‐C Catalysts from Tannin‐Fe(III) Complexes for Efficient Oxygen Reduction

Liquid phase oxidation enables stable soft carbon anodes for potassium-ion batteries

Contact Info

Product

Resources

About

Hierarchical Porous Fe₃C@Fe‐N‐C Catalysts from Tannin‐Fe(III) Complexes for Efficient Oxygen Reduction