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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Mineralization of paracetamol using a gas diffusion electrode modified with ceria high aspect ratio nanostructures

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Author(s):
Pinheiro, Victor S. [1] ; Paz, Edson C. [1, 2] ; Aveiro, Luci R. [1] ; Parreira, Luanna S. [3] ; Souza, Felipe M. [1] ; Camargo, Pedro H. C. [3] ; Santos, Mauro C. [1]
Total Authors: 7
Affiliation:
[1] Univ Fed ABC UFABC, CCNH, LEMN, Rua Santa Adelia 166, BR-09210170 Santo Andre, SP - Brazil
[2] Inst Fed Educ Ciencia & Tecnol Maranhao IFMA, Campus Acailandia, R Projetada S-N, BR-65930000 Acailandia, MA - Brazil
[3] Univ Sao Paulo, IQ, Av Prof Lineu Prestes, BR-05508000 Sao Paulo, SP - Brazil
Total Affiliations: 3
Document type: Journal article
Source: Electrochimica Acta; v. 295, p. 39-49, FEB 1 2019.
Web of Science Citations: 3
Abstract

A large number of pharmaceutical drugs have been found in effluents because conventional treatments are not efficient in their removal. Among these drugs, paracetamol is a cause of concern due to its great use worldwide. In this context, electrochemical advanced oxidation processes (EAOPs) based on the Fenton process have been studied because they are able to remove these persistent organic pollutants. This work aims to use an electrocatalyst based on Vulcan XC-72 carbon black modified with 1% ceria high aspect ratio nanostructures (1% CeO2 HARN/Vulcan XC-72) as a gas diffusion electrode (GDE) for both hydrogen peroxide electrogeneration and paracetamol degradation using Fenton-like processes. These studies were evaluated using two different anodes, Pt and boron-doped diamond (BDD). The results obtained in the H2O2 electrogeneration indicated a large increase in the efficiency of the modified gas diffusion electrode (MGDE) with the 1% CeO2 HARN/Vulcan XC-72 electrocatalyst compared to the Vulcan XC-72 GDE without modification. Approximately 1463 mg L-1 of H2O2 with an energy consumption of 11.5 kWh kg(-1) and a current efficiency of 44.9% was obtained. The tested EAOPs showed paracetamol mineralization rates of up to 98.4% after 6 h of electrolysis in 350 mL of acidic medium. The MGDE also showed a high stability without loss of H2O2 electrogeneration capacity after 130 h of use, making it promising in applications for EAOPs aiming at organic pollutant mineralization. (C) 2018 Published by Elsevier Ltd. (AU)

FAPESP's process: 16/00819-8 - Controlled synthesis of nanomaterials based on Pd and Pt: electrocatalytic activity and stability
Grantee:Luanna Silveira Parreira
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 15/21366-9 - Hybrid materials containing metal nanoparticles for catalytic applications
Grantee:Pedro Henrique Cury Camargo
Support type: Regular Research Grants
FAPESP's process: 17/26288-1 - Hybrid electrocatalysts based on Pd, Pt and Sn nanoparticles, and on ceria nanorods for application in fuel cells
Grantee:Victor dos Santos Pinheiro
Support type: Scholarships in Brazil - Doctorate
FAPESP's process: 15/10314-8 - Nanostructures for phenol, ciprofloxacin and 17±-ethinylestradiol degradation
Grantee:Mauro Coelho dos Santos
Support type: Regular Research Grants
FAPESP's process: 17/22976-0 - Development of palladium and niobium nanoelectrocatalysts for alkaline direct ethanol fuel cells
Grantee:Felipe de Moura Souza
Support type: Scholarships in Brazil - Doctorate (Direct)
FAPESP's process: 17/10118-0 - Study and application of electrochemical technology for the analysis and degradation of endocrine interferents: materials, sensors, processes and scientific dissemination
Grantee:Marcos Roberto de Vasconcelos Lanza
Support type: Research Projects - Thematic Grants
FAPESP's process: 17/21846-6 - Nanostructures for environmental remediation and power generation from renewable sources
Grantee:Mauro Coelho dos Santos
Support type: Program for Research on Bioenergy (BIOEN) - Regular Program Grants