ORCID Profile
0000-0002-7471-2989
Current Organisations
University of Aveiro
,
NCD Technologies.LLC
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Publisher: Elsevier BV
Date: 08-2005
Publisher: Elsevier BV
Date: 08-2010
Publisher: Korean Physical Society
Date: 03-2012
DOI: 10.3938/JKPS.60.912
Publisher: Elsevier BV
Date: 11-2003
Publisher: Elsevier BV
Date: 10-2009
Publisher: Elsevier BV
Date: 09-2009
Publisher: Hindawi Limited
Date: 19-07-2017
DOI: 10.1155/2017/1934724
Abstract: The plasma treatment on commercial active carbon (AC) was carried out in a capacitively coupled plasma system using Ar + 10% O 2 at pressure of 4.0 Torr. The RF plasma power ranged from 50 W to 100 W and the processing time was 10 min. The carbon film electrode was fabricated by electrophoretic deposition. Micro-Raman spectroscopy revealed the highly increased disorder of sp 2 C lattice for the AC treated at 75 W. An electrosorption capacity of 6.15 mg/g was recorded for the carbon treated at 75 W in a 0.1 mM NaCl solution when 1.5 V was applied for 5 hours, while the capacity of the untreated AC was 1.01 mg/g. The plasma treatment led to 5.09 times increase in the absorption capacity. The jump of electrosorption capacity by plasma treatment was consistent with the Raman spectra and electrochemical double layer capacitance. This work demonstrated that plasma treatment was a potentially efficient approach to activating biochar to serve as electrode material for capacitive deionization (CDI).
Publisher: Elsevier BV
Date: 02-2002
Publisher: Elsevier BV
Date: 2003
Publisher: Wiley
Date: 10-2002
DOI: 10.1002/1521-4109(200210)14:18<1294::AID-ELAN1294>3.0.CO;2-R
Publisher: Elsevier BV
Date: 08-2013
Publisher: Elsevier BV
Date: 10-2012
Publisher: Elsevier BV
Date: 10-2012
Publisher: Elsevier BV
Date: 02-2003
Publisher: Elsevier BV
Date: 08-2003
Publisher: Elsevier BV
Date: 04-2008
Publisher: Wiley
Date: 08-2002
DOI: 10.1002/1521-4109(200208)14:15/16<1110::AID-ELAN1110>3.0.CO;2-E
Publisher: Elsevier BV
Date: 06-2008
Publisher: Wiley
Date: 24-11-2009
Abstract: We present infrared (IR) and Raman spectra of carbon nanotubes (CNTs) coated by the conducting polymers polyaniline (PANI), polycarbazole (PCz), and melanin (polydopamine). These hybrid materials have been prepared by electrochemical polymerization and exhibit increased conductivity and enhanced electron transfer from the electrolyte to the electrode. Interaction of the polymers with the nanotube surface causes attenuation of some IR modes [surface‐attenuated infrared absorption (SAIRA) effect], while the Raman modes are enhanced by a surface‐enhanced Raman scattering (SERS) mechanism. The magnitude of the attenuation depends on the strength of the nanotube–polymer interaction. We compared the spectra of the hybrids and found the most outspoken effect in the case of polyaniline, in accordance with the results of ultraviolet–visible (UV–Vis) and impedance spectroscopy.
Publisher: American Scientific Publishers
Date: 10-2014
Publisher: Elsevier BV
Date: 03-2014
Start Date: 2012
End Date: 2018
Funder: Ministério da Educação e Ciência
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