Simultaneous detection of hesperidin and narirutin in residual water using nanoporous platinum electrosynthesized by alloying-dealloying mechanism

Autor(es)

Beluomini, Maisa Azevedo ^{[1, 2]} ; Stradiotto, Nelson Ramos ^{[1, 2]} ; Boldrin Zanoni, Maria Valnice ^[1]

Afiliação do(s) autor(es)

^[1] Sao Paulo State Univ Unesp, Inst Chem, 55 Prof Francisco Degni St, BR-14800060 Araraquara, SP - Brazil

^[2] Sao Paulo State Univ UNESP, Bioenergy Res Inst IPBEN, 55 Prof Francisco Degni St, BR-14800060 Araraquara, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF ELECTROANALYTICAL CHEMISTRY; v. 904, JAN 1 2022.
• Citações Web of Science: 0

Resumo

This paper reports the versatile preparation of three-dimensional nanostructured porous platinum (3DnpPt) directly on the surface of a screen-printed electrode via a simple electrochemical method and its application for the simultaneous voltammetric determination of hesperidin (HES) and narirutin (NAR) in residual water from the citrus industry. The surface morphology of the electrode was characterized by field-emission scanning electron microscopy (FEG-SEM), electron diffraction X-ray (EDX), X-ray photoelectron spectroscopy (XPS), and by the electrochemical impedance spectroscopic (EIS) technique. The results obtained from the voltammetric studies conducted showed that the sensor has good electrocatalytic activity and selectivity for HES and NAR oxidation. The linear scanning voltammetry (LSV) technique employed yielded linear ranges of 10 mu mol L-1 to 0.4 mmol L-1 and 10 mu mol L-1 to 0.5 mmol L-1, with detection limits of 6.61 mu mol L-1 and 0.21 mu mol L-1, and amperometric sensitivity of 0.52 A L mol-1 and 0.79 A L mol-1 for HES and NAR, respectively. The proposed 3DnpPt-SPE sensor also exhibited good repeatability and high selectivity, as well as long-term stability. The sensor was successfully applied in residual water sample for the simultaneous quantification of HES and NAR where good recovery rates were obtained. (AU)

• Processo FAPESP: 14/50945-4 - INCT 2014: Instituto Nacional de Tecnologias Alternativas para Detecção, Avaliação Toxicológica e Remoção de Micropoluentes e Radioativos
• Beneficiário: Maria Valnice Boldrin
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 17/22401-8 - Fruto-refinaria: processos de obtenção, métodos de caracterização e geração de produtos oriundos de resíduos da fruticultura
• Beneficiário: Nelson Ramos Stradiotto
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 18/12131-6 - Sensores eletroquímicos baseados em eletrodos impressos modificados com nanoporos metálicos e monitorados por rede sem fio para determinação de flavonóides nos resíduos da indústria cítrica
• Beneficiário: Maísa Azevedo Beluomini
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado