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Visible Light Photoelectrochemical Sensor for Acetaminophen Determination using a Glassy Carbon Electrode Modified with BiVO 4 Nanoparticles
Author(s) -
Silva Araújo Mayara,
Barretto Túlio Rolim,
Galvão Juliana Costa Rolim,
Tarley César Ricardo Teixeira,
Dall'Antônia Luiz Henrrique,
Matos Roberto,
Medeiros Roberta Antigo
Publication year - 2021
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.202060031
Subject(s) - bismuth vanadate , photocurrent , detection limit , electrode , nanoparticle , materials science , visible spectrum , buffer solution , analytical chemistry (journal) , linear range , nuclear chemistry , chemistry , nanotechnology , chromatography , catalysis , photocatalysis , optoelectronics , biochemistry
A new and simple photoelectrochemical (PEC) sensor using a glassy carbon electrode (GCE) modified with bismuth vanadate (BiVO 4 ) nanoparticles and dihexadecyl phosphate (DHP) film was useful for acetaminophen (AC) determination. In 0.2 mol L −1 phosphate buffer (pH=9), the GCE without modification exhibited the smaller photocurrent (0.86 μA) when compared with GCE modified with 1.0 mg mL −1 or 2.0 mg mL −1 BiVO 4 nanoparticles suspension (5.9 and 34 μA, respectively). Based on the photocurrent signal generated through the interaction between GCE, BiVO 4 and the energy of visible light a chronoamperometric method for AC determination was developed. The AC linear range concentration from 0.099 to 0.99 μmol L −1 and limits of detection and quantification of 0.027 and 0.091 μmol L −1 , respectively, was obtained. The proposed method was applied to the AC determination in commercial drugs and tap water with satisfactory accuracy and precision. Moreover, the PEC construction was easy and had a short response time, which might confer higher sample throughput for the method.