Structural control of a novel hierarchical porous carbon material and its adsorption properties

Li-Feng Cai,Jie Liang,Jie-Ming Zhan,Jie Yin,Lei Yang

doi:10.1038/s41598-022-06781-9

Li-Feng Cai, Jie Liang + Show 3 more

Open Access

https://doi.org/10.1038/s41598-022-06781-9

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Journal: Scientific Reports	Publication Date: Feb 24, 2022
Citations: 8	License type: open-access

Affiliation: Putian University, Fudan University

Abstract

Novel hierarchical porous carbon materials (HPCs) were fabricated via a reactive template-induced in situ hypercrosslinking procedure. The effects of carbonization conditions on the microstructure and morphology of HPCs were investigated, and the adsorption of methylene blue (MB) on HPCs was explored. The as-prepared HPCs has a hierarchical micro-, meso- and macropore structure, which results from the overlap of hollow nanospheres possessing microporous shells and macroporous cavities. The carbonization temperature, carbonization time and carbonization heating rate played important roles in tailoring the nanostructures of HPCs. The BET specific surface area and micropore specific surface area can reach 2388 m2 g−1 and 1892 m2 g−1, respectively. Benefitting from the well-developed pore structure, the MB removal efficiency can exceed 99% under optimized conditions. The adsorption kinetics and thermodynamics can be well described by a pseudo-second-order model and Langmuir model, respectively. Furthermore, such adsorption was characterized by a spontaneous endothermic process.

Highlights

Novel hierarchical porous carbon materials (HPCs) were fabricated via a reactive template-induced in situ hypercrosslinking procedure
The pore size distribution was adjusted for a microporous material that adsorbs carbon dioxide, as the number and size of the microporous structure determine the amount of carbon dioxide adsorption, and a matched porous structure can exhibit the maximum adsorption capacity for gas or small molecules under the same c onditions[8,9]
This result showed that the special three-dimensional structure, which was formed by stacking hollow nanospheres, could be prepared at all carbonization temperature ranges, indicating that HPCs presents good thermal stability and framework strength

Summary

Introduction

Novel hierarchical porous carbon materials (HPCs) were fabricated via a reactive template-induced in situ hypercrosslinking procedure. Porous carbon materials (HPCs) with micropores, mesopores and macropores are widely used in emerging fields due to their diverse pore structures with high SSA and excellent chemical s tability[10,11].

Results

Conclusion