New application for the BiVO4 photoanode: A photoelectroanalytical sensor for nitrite

Ribeiro, Francisco W.P.; Moraes, Fernando C.; Pereira, Ernesto C.; Marken, Frank; Mascaro, Lúcia H.

doi:10.1016/j.elecom.2015.09.022

Cited by 47 publications

(14 citation statements)

References 38 publications

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“…After that, it was observed that a reduction in the photocurrent occurred due to the recombination of photogenerated holes on the surface with the electrons in the conduction band of the semiconductor, even at large pH values [58]. Moreover, others papers reported in the literature [59][60][61], has confirmed that different oxides, such as: TiO 2 , WO 3 , and BiVO 4 can be used as photoanodes. These strategies usually improve the hydrogen evolutions onto cathode in a photoelectrochemical cell.…”

Section: Morphological and Photoelectrochemical Properties Of Cuwo 4 mentioning

confidence: 90%

Facile preparation of CuWO4 porous films and their photoelectrochemical properties

Lima

Costa

Santos

et al. 2017

Electrochimica Acta

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In this study, the structure and photoelectrochemical properties of CuWO 4 porous films synthesized by a co-precipitation method followed by a hydrothermal treatment were investigated. The film was deposited on fluorine-doped tin oxide (FTO)-conducting glass, from a suspension containing polyethylene glycol, and heat-treated at 500 C for 30 min. X-ray diffraction patterns, the Rietveld refinement data, and the micro-Raman spectrum showed that the CuWO 4 film has a triclinic structure. The optical band gap energy of the film was estimated to be 2.45 eV by the Tauc plot. Field emission scanning electron microcopy images of the films indicated that they are about 4.0 AE 0.5 mm thick. The photoelectrochemical properties of the film were investigated in a Na 2 SO 4 aqueous solution, in the absence of light and under polychromatic irradiation. The CuWO 4 film exhibited photoelectrochemical behavior of a n-type semiconductor, with a negative photopotential and an anodic photocurrent density of 68 mA cm À2 at 0.73 V vs. Ag/AgCl (1.23 V vs. RHE). The n-type photoelectrochemical behavior was confirmed by a chronoamperometry measurement biased condition at + 0.7 V, at different pH values. From these studies, it was noted that when the pH values increased from 3 to 11, the photocurrent density increased about 9 times. Also, the flat band potential (E fb) of the semiconductor was estimated by the Butler-Gärtner model at + 0.34 V, which was utilized to calculate the conduction band edge. The studies presented here reveal that the CuWO 4 porous film is a promising candidate to be applied as a photoanode in photocatalytic processes under irradiation by visible light.

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Section: Morphological and Photoelectrochemical Properties Of Cuwo 4 mentioning

confidence: 90%

Facile preparation of CuWO4 porous films and their photoelectrochemical properties

Lima

Costa

Santos

et al. 2017

Electrochimica Acta

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“…Light induced electrode mechanisms can be useful also when short-lived redox-or photo-excited intermediates can be employed in analysis (e. g. employing singlet oxygen in drug detection [1,2]). Photo-electroanalytical protocols have been suggested for detection of aminophenol [3], for nitrite detection [4], or for carbohydrate level monitoring [5]. Photoelectrochemical methods have been developed also for biosensors [6,7].…”

Section: Introductionmentioning

confidence: 99%

Photoelectroanalytical Oxygen Detection with Titanate Nanosheet – Platinum Hybrids Immobilised into a Polymer of Intrinsic Microporosity (PIM‐1)

et al. 2020

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The polymer of intrinsic microporosity PIM-1 is employed to disperse and deposit a Pt@titanate nanosheet photocatalyst film. The resulting microporous films allow electrolyte and oxygen permeation to give conventional oxygen reduction voltammetric responses on glassy carbon or on platinum disk electrodes in the dark. Preliminary data are presented showing that with pulsed light from a blue LED (385 nm) oxygen reduction at the electrode is effectively "switched off". A mechanism is tentatively assigned as photocatalytic depletion of oxygen near the electrode. Photoelectrochemical current responses are observed in aqueous NaOH, NaCl, Na 2 HPO 4 and shown to be light intensity and oxygen concentration dependent. Electroanalytical applications are suggested.

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“…Other material considered a good n-type semiconductor oxide material with high visible-light activity and promising for application in PEC sensors is the bismuth vanadate (BiVO 4 ) [20,21]. Three crystalline structures may be present, which may be monoclinic, orthorhombic and tetragonal, but only the monoclinic structure presents a narrow band gap of about 2.4 eV, which makes it suitable to be excited by visible light irradiation [21,22]. Furthermore, BiVO 4 presents as advantages the nontoxicity, chemical and electrochemical stability in aqueous solution, low cost and easy synthesis [20,22,23,24].…”

Section: Introductionmentioning

confidence: 99%

“…There are several works in the literature concerning the undoped and doped BiVO 4 in the development of PEC sensors. Ribeiro et al [22] reported the use of BiVO 4 photoanode on fluorine-doped tin oxide (FTO) substrate for nitride determination, with a limit of detection (LOD) of 1.5 μmol L À 1 . Liu et al [23] developed a non-enzymatic hydrogen peroxide PEC sensor based on nanoporous BiVO 4 film on FTO substrate.…”

Section: Introductionmentioning

confidence: 99%

Visible Light Photoelectrochemical Sensor for Acetaminophen Determination using a Glassy Carbon Electrode Modified with BiVO₄ Nanoparticles

et al. 2020

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A new and simple photoelectrochemical (PEC) sensor using a glassy carbon electrode (GCE) modified with bismuth vanadate (BiVO4) 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 BiVO4 nanoparticles suspension (5.9 and 34 μA, respectively). Based on the photocurrent signal generated through the interaction between GCE, BiVO4 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.

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New application for the BiVO4 photoanode: A photoelectroanalytical sensor for nitrite

Cited by 47 publications

References 38 publications

Facile preparation of CuWO4 porous films and their photoelectrochemical properties

Facile preparation of CuWO4 porous films and their photoelectrochemical properties

Photoelectroanalytical Oxygen Detection with Titanate Nanosheet – Platinum Hybrids Immobilised into a Polymer of Intrinsic Microporosity (PIM‐1)

Visible Light Photoelectrochemical Sensor for Acetaminophen Determination using a Glassy Carbon Electrode Modified with BiVO₄ Nanoparticles

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New application for the BiVO4 photoanode: A photoelectroanalytical sensor for nitrite

Cited by 47 publications

References 38 publications

Facile preparation of CuWO4 porous films and their photoelectrochemical properties

Facile preparation of CuWO4 porous films and their photoelectrochemical properties

Photoelectroanalytical Oxygen Detection with Titanate Nanosheet – Platinum Hybrids Immobilised into a Polymer of Intrinsic Microporosity (PIM‐1)

Visible Light Photoelectrochemical Sensor for Acetaminophen Determination using a Glassy Carbon Electrode Modified with BiVO4 Nanoparticles

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Product

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About

Visible Light Photoelectrochemical Sensor for Acetaminophen Determination using a Glassy Carbon Electrode Modified with BiVO₄ Nanoparticles