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

Francisco Wirley Paulino Ribeiro, Fernando Cruz Moraes, Ernesto Chaves Pereira, Frank Marken, Lucia Helena Mascaro

Research output: Contribution to journalArticlepeer-review

29 Citations (Scopus)

Abstract

A simple and sensitive photoelectrochemical sensor based on the bismuth vanadate (BiVO4) photoanode coupled to visible light excitation was developed for nitrite detection. The BiVO4 was prepared by hydrothermal methods and used as photoelectroactive sensor. Photoexcitation with visible light allows nitrite anions to act as highly efficient hole scavenger at low potential. The photocurrent response increases linearly with nitrite concentration in the solution. The proposed device operates in the range of detection (2.5 to 100.0 μmol L–1), with limit of detection (1.5 μmol L–1), and with good reproducibility (4.1%) for nitrite analysis..

Original languageEnglish
Pages (from-to)1-4
Number of pages4
JournalElectrochemistry Communications
Volume61
DOIs
Publication statusPublished - 1 Dec 2015

Keywords

  • Bismuth vanadate
  • Hole scavenger
  • Nitrite
  • Photoelectrochemical sensor

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