A Novel Electrochemical Sensor Based on Printex L6 Carbon Black Carrying CuO/Cu2O Nanoparticles for Propylparaben Determination

Author(s)

Goulart, Lorena A. ^[1] ; Guaraldo, Thais T. ^[1] ; Lanza, Marcos R. V. ^{[1, 2]}

Affiliation

^[1] Univ Sao Paulo, Inst Quim Sao Carlos, POB 780, BR-13560970 Sao Paulo, SP - Brazil

^[2] UNESP, Inst Nacl Tecnol Alternat Deteccao Avaliacao Toxi, Inst Quim, BR-14800900 Araraquara, SP - Brazil

• Document type: Journal article
• Source: Electroanalysis; v. 30, n. 12, p. 2967-2976, DEC 2018.
• Web of Science Citations: 4

Abstract

The paper reports the development of a new sensor based on Printex L6 (CPL6) carbon black modified with copper oxides (CuO/Cu2O) nanoparticles and its application towards the determination of Propylparaben (PP). In fact, it is the first report of its kind in the literature. The sensor was produced through the dispersion of CPL6 in dimethylformamide on glassy carbon electrode surface followed by CuO/Cu2O electrodeposition. The conditions of electrodeposition investigated included time and solution concentration of Cu (II). Morphological, structural and electrochemical characterizations of the sensor were performed. Under optimal conditions, wide linear range (1.0 to 35.0 mu mol L-1) was obtained in the detection of PP. The detection limit obtained was 0.46 mu mol L-1 (S/N=3). The CuO/Cu2O-CPL6/GCE sensor was found to be as sensitive as the high performance liquid chromatography in the determination of PP in both cosmetic and river water samples, in addition to being reproducible and stable. (AU)

• FAPESP's process: 16/08760-2 - HETEROJUNCTION OF NiO/ZnO AND CuO/ZnO APPLIED AT THE PHOTOELETRODEGRADATION OF TRIMETHOPRIM AND LEVOFLOXACIN
• Grantee: Lorena Athie Goulart
• Support type: Scholarships in Brazil - Post-Doctorate
• FAPESP's process: 16/01937-4 - Synthesis of binary metal oxides (Nb, Zr, Ta, Ru, Mo and Co) supported on amorphous carbon for the production of gas diffusion electrodes (GDE) for the electrosynthesis of H2O2 in situ in flow reactors.
• Grantee: Marcos Roberto de Vasconcelos Lanza
• Support type: Regular Research Grants
• FAPESP's process: 14/11861-0 - Development of nanostructured electrochemical sensors for the determination of antibiotics in samples of environmental interest
• Grantee: Thais Tasso Guaraldo
• Support type: Scholarships in Brazil - Post-Doctorate
• FAPESP's process: 14/50945-4 - INCT 2014: National Institute for Alternative Technologies of Detection, Toxicological Evaluation and Removal of Micropollutants and Radioactivies
• Grantee: Maria Valnice Boldrin
• Support type: Research Projects - Thematic Grants
• 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