Titanium dioxide/cadmium sulfide photoanode applied to photoelectrodegradation of naproxen in wastewater

Author(s)

Feitosa, Maria H. A. ^[1] ; Prado, Thiago M. ^[2] ; Santos, Anderson M. ^[1] ; Silva, Lais P. ^[1] ; Grosseli, Guilherme M. ^[1] ; Fadini, Pedro S. ^[1] ; Fatibello-Filho, Orlando ^[1] ; Moraes, Fernando C. ^[1]

Affiliation

^[1] Univ Fed Sao Carlos, Dept Chem, Rod Washignton Luis, Km 235, POB 676, BR-13560970 Sao Carlos, SP - Brazil

^[2] Chem Univ Sao Paulo, Sao Carlos Inst, Ave Trabalhador Sao Carlense 400, POB 780, BR-13566590 Sao Carlos, SP - Brazil

• Document type: Journal article
• Source: JOURNAL OF ELECTROANALYTICAL CHEMISTRY; v. 897, SEP 15 2021.
• Web of Science Citations: 0

Abstract

In this work TiO2 and CdS were synthesized, characterized, and applied on the fabrication of photoanodes for degradation of naproxen in aqueous matrices. The photoanodes were based on the deposition of the TiO2 film over fluorine-doped fin oxide glass plates followed by a CdS electrodeposition film. Characterizations of the photoanodes were performed by linear sweep voltammetry, transmission electronic microscopy, energy-dispersive X-ray spectroscopy, and diffuse reflectance spectroscopy. The degradation process of naproxen was evaluated using UV-vis spectroscopy and total organic carbon. The CdS presented a low energy band gap, resulting in the increase of the photocurrent generated in the photoanode. The proposed photoanode showed efficiency for the photoelectrochemical degradation of naproxen with kinetic constant estimated at k = 1.1 x 10(-2) min(-1) and t(1/2) = 62.2 min(-1). (AU)

• 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 Opportunities: Research Projects - Thematic Grants
• FAPESP's process: 20/01050-5 - Development and application of electrochemical and photoelectrochemical sensors for the determination of emerging contaminants in environmental samples
• Grantee: Orlando Fatibello Filho
• Support Opportunities: Regular Research Grants
• FAPESP's process: 14/50951-4 - INCT 2014: Advanced Analytical Technologies
• Grantee: Celio Pasquini
• Support Opportunities: Research Projects - Thematic Grants