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

Author(s)

Paulino Ribeiro, Francisco Wirley ^[1] ; Moraes, Fernando Cruz ^[1] ; Pereira, Ernesto Chaves ^[1] ; Marken, Frank ^[2] ; Mascaro, Lucia Helena ^[1]

Affiliation

^[1] Univ Fed Sao Carlos, Dept Chem, BR-13565905 Sao Carlos - Brazil

^[2] Univ Bath, Dept Chem, Bath BA2 7AY, Avon - England

• Document type: Journal article
• Source: Electrochemistry Communications; v. 61, p. 1-4, DEC 2015.
• Web of Science Citations: 16

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 mu mol L-1), with limit of detection (1.5 mu mol L-1), and with good reproducibility (4.1%) for nitrite analysis. (C) 2015 Elsevier B.V. All rights reserved. (AU)

• FAPESP's process: 14/06704-2 - SYNTHESIS AND CHARACTERIZATION OF BISMUTH VANADATE FOR WATER SPLITTING AND DEGRADATION OF THE ORGANIC MOLECULES
• Grantee: Francisco Wirley Paulino Ribeiro
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• FAPESP's process: 08/57872-1 - National Institute for Materials Science in Nanotechnology
• Grantee: Elson Longo da Silva
• Support Opportunities: Research Projects - Thematic Grants
• FAPESP's process: 13/07296-2 - CDMF - Center for the Development of Functional Materials
• Grantee: Elson Longo da Silva
• Support Opportunities: Research Grants - Research, Innovation and Dissemination Centers - RIDC