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Enhanced organic species identification via laser structuring of carbon monolithic surfaces

Citation

He, XY and Chikarakara, E and Nesterenko, EP and Nesterenko, PN and Mousavian, RT and Paull, B and Brabazon, D, Enhanced organic species identification via laser structuring of carbon monolithic surfaces, Applied Surface Science, 493 pp. 829-837. ISSN 0169-4332 (2019) [Refereed Article]

Copyright Statement

2019 Published by Elsevier B.V.

DOI: doi:10.1016/j.apsusc.2019.06.298

Abstract

It is important to be able to control the physical and chemical integrity of carbon-based porous monolith structures while being tailored for targeted analytical, energy and catalytic based applications. A set up using a CO2 laser in continuous mode (CW CO2 laser) was implemented to cut fragile and porous carbon monolithic (CM) and nanotemplated carbon monolithic (NTCM) rods into discs with a prescribed thickness and dimensional integrity (denoted as LCM and LNTCM, or LCMs). Changes in structure, porosity and composition of LCMs were induced by the efficient thermal energy afforded by the CW CO2 laser irradiation under tightly controlled process conditions. The main effects observed before and after laser cutting were studied in comparison with traditional scalpel blade cutting of carbon monolithic (SCM). FE-SEM images confirmed that the resulting LCMs exhibited a more open, interconnected macroporous structure and smoothed mesopores to a depth of approximately 5 um, while the structure of the bulk section remained intact. Minimal changes in chemical compositions were confirmed by XPS. Raman spectroscopy revealed a modest increase in the graphitic content on the cross sections of LCM discs. Phenol and Bisphenol A (BPA) was used as a model analyte for demonstration of resulting discs adsorption performance.

Item Details

Item Type:Refereed Article
Keywords:carbon monolith, CO2 laser processing, organic detection, physical and chemical surface structure, XPS
Research Division:Chemical Sciences
Research Group:Analytical chemistry
Research Field:Analytical chemistry not elsewhere classified
Objective Division:Manufacturing
Objective Group:Industrial chemicals and related products
Objective Field:Industrial chemicals and related products not elsewhere classified
UTAS Author:Paull, B (Professor Brett Paull)
ID Code:152384
Year Published:2019
Deposited By:Engineering
Deposited On:2022-08-18
Last Modified:2022-11-03
Downloads:0

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