Determination of p-nitrophenol in Synthetic Textile Wastewater Samples Using a Graphene Oxide/Palladium Nanoparticles Modified Carbon Paste Electrode

Author(s)

D'Almeida, Suysia R. ^[1] ; Buoro, Rafael M. ^[1]

Affiliation

^[1] Univ Sao Paulo, Inst Quim Sao Carlos, Av Trabalhador Sao Carlense 400, BR-13566590 Sao Carlos - Brazil

• Document type: Journal article
• Source: Electroanalysis; v. 33, n. 6 MAR 2021.
• Web of Science Citations: 0

Abstract

This work presents for the first time the incorporation of graphene oxide/palladium nanoparticles composite into a carbon paste electrode and its application in the quantification of p-nitrophenol, a very hazardous pollutant, in a synthetic wastewater sample. The composite presented a homogeneous particle distribution and narrow size distribution, averaging 4 nm. The resulting electrode presented improved shelf stability and prevented the adsorption of byproducts of p-nitrophenol on the electrode surface, which is an advantage when compared to other sensors, due to the presence of the polymer polyvinylimidazole inside the graphene oxide matrix. This work also explores the performance of the proposed sensor among other dyes which can be present simultaneously in industrial wastewater and free water bodies. (AU)

• FAPESP's process: 17/13307-8 - Development of hybrid nanostructured palladium composite electrodes towards the determination of nitrosamines in cosmetics
• Grantee: Rafael Martos Buoro
• Support Opportunities: Regular Research Grants