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Surface Properties of Synthesized Nanoporous Carbon and Silica Matrices

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Published on: March 27, 2019

Accelerated Synthesis of Ordered Mesoporous Carbons Using Plasma.

Anthony Griffin¹, Genwei Chen², Mark Robertson¹

¹School of Polymer Science and Engineering, University of Southern Mississippi, Hattiesburg, Mississippi, 39406, United States.

|May 8, 2023

Summary

Accelerated synthesis of ordered mesoporous carbon (OMC) is achieved using dielectric barrier discharge plasma. This novel method significantly reduces carbonization time to 15 minutes, enhancing materials discovery.

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Preparation of Biomass-based Mesoporous Carbon with Higher Nitrogen-/Oxygen-chelating Adsorption for CuII Through Microwave Pre-Pyrolysis

Preparation of Biomass-based Mesoporous Carbon with Higher Nitrogen-/Oxygen-chelating Adsorption for CuII Through Microwave Pre-Pyrolysis

Published on: February 12, 2019

Area of Science:

Materials Science
Chemical Engineering
Nanotechnology

Background:

Conventional ordered mesoporous carbon (OMC) synthesis involves lengthy carbonization steps.
Existing methods to accelerate OMC production often require additional components like microwave absorbers or conductive agents.
There is a need for advanced manufacturing capabilities with higher throughput for expedited materials discovery.

Purpose of the Study:

To demonstrate accelerated synthesis and functionalization of OMCs using dielectric barrier discharge plasma.
To investigate the impact of plasma parameters on OMC properties.
To explore the incorporation of heteroatoms and synthesis of larger pore-sized OMCs via plasma treatment.

Main Methods:

Utilized dielectric barrier discharge plasma for rapid carbonization of OMC precursors.
Systematically varied plasma power, time, and gas atmosphere (including ammonia).
Employed non-Pluronic templating systems for synthesizing OMCs with larger pore sizes.

Main Results:

Achieved OMC carbonization within 15 minutes using 30 W plasma sources, a >10x increase in kinetics compared to traditional pyrolysis.
Demonstrated rapid carbonization without additional substrates within OMC precursors.
Successfully incorporated nitrogen heteroatoms (up to 4.7 at.%) and synthesized OMCs with pore sizes >10 nm.

Conclusions:

Dielectric barrier discharge plasma enables significantly faster OMC production rates.
Plasma treatment offers a versatile approach for OMC functionalization and tailoring pore structures.
The plasma-enabled method is industrially relevant and scalable for high-throughput OMC synthesis.