Journal
CARBON
Volume 159, Issue -, Pages 110-118Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2019.12.016
Keywords
Electrochemical sensors; Porous material; Graphene domains; Laser pyrolysis; Disposable devices
Funding
- Brazilian agency FAPESP [2017/10522-5, 2018/16250-0, 2018/08782-1, 2009/054066-7, 2007/54829-5]
- Brazilian agency CAPES [3359/2014]
- Brazilian agency CNPq [444498/2014-1, 438828/2018-6, 306690/2015-2, 305605/2017-8]
- Brazilian agency INCTBio [573672/2008-3]
- Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) [18/16250-0] Funding Source: FAPESP
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This study fabricated a portable, high-performance, and reagentless electrochemical devices using CO2 laser-scribing process, which allowed localized carbonization of a non-conductive and low-cost polymer platform, i.e., phenolic-paper. The carbonized material was extensively characterized by Raman spectroscopy, XPS, XRD, SEM, and electrochemical impedance spectroscopy. The carbon-based electrodes were obtained from the photothermal process induced by CO2 laser radiation and subsequently subjected to electrochemical treatment to fabricate a functional material with excellent conductivity and low charge-transfer resistance. Additionally, the laser-scribed electrodes presented a porous structure with graphene-like domains, thus indicating both potential for on-site electroanalytical applications and better performance than conventional carbon electrodes. (C) 2019 Elsevier Ltd. All rights reserved.
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