| Full text | |
| Author(s): |
Tasic, Nikola
[1]
;
Martins, Alisson Bezerra
[1]
;
Yifei, Xue
[2]
;
Goes, Marcio Sousa
[3]
;
Martin-Yerga, Daniel
[4]
;
Mao, Lanqun
[2]
;
Paixao, Thiago R. L. C.
[1]
;
Goncalves, Luis Moreira
[1]
Total Authors: 8
|
| Affiliation: | [1] Univ Sao Paulo, Dept Quim Fundamental, Inst Quim, Sao Paulo, SP - Brazil
[2] Chinese Acad Sci, Inst Chem, Beijing - Peoples R China
[3] Univ Fed Integracao Latino Amer UNILA, Ctr Interdisciplinar Ciencias Nat, Inst Latino Amer Ciencias Vida & Nat, Foz Do Iguacu, De & - Brazil
[4] Univ Warwick, Dept Chem, Coventry, W Midlands - England
Total Affiliations: 4
|
| Document type: | Journal article |
| Source: | Electrochemistry Communications; v. 121, DEC 2020. |
| Web of Science Citations: | 0 |
| Abstract | |
Laser-scribed electrochemical paper-based devices (LS-ePADs) are emerging as a greener alternative to conventional carbon electrochemical sensors since their fabrication does not involve the use of chemicals and the resulting devices show good reproducibility, scalability, and interesting electrochemical properties. This work evaluates the electrochemical properties of LS-ePADs using techniques such as cyclic voltammetry and electrochemical impedance spectroscopy (EIS), together with surface characterization by Raman spectroscopy and scanning electron microscopy. The voltammetric behavior of the porous electrode can be described as diffusional to the top electrode layer. Since the porous structure could affect the mass transport, EIS was used to prove that transport resistance is not limiting the charge transfer process in the electrode response. The graphene-based material that forms the electrode surface, identified by Raman spectroscopy, allows a considerably fast electron transfer between the LS-ePADs and the ferri/ferrocyanide molecules. (AU) | |
| FAPESP's process: | 18/20745-4 - Study of the increased faradaic signal with paper-based electrodes |
| Grantee: | Alisson Feliphe Bezerra Martins |
| Support Opportunities: | Scholarships in Brazil - Scientific Initiation |
| FAPESP's process: | 17/10522-5 - Development of alternative methods for fabrication of electrochemical paper-based sensors |
| Grantee: | Thiago Regis Longo Cesar da Paixão |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 18/13922-7 - Development of a point-of-care biosensor for the swift determination of D-Dimers |
| Grantee: | Nikola Tasic |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 18/14425-7 - A new synergetic path for gas-diffusion microextraction (GDME) making use of molecular imprinted polymers (MIPs) |
| Grantee: | Luís Francisco Moreira Gonçalves |
| Support Opportunities: | Research Grants - Young Investigators Grants |