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Non-noble metal Bi/BiVO4 photoanode for surface plasmon resonance-induced photoelectrochemical biosensor of hydrogen peroxide detection.
- Source :
- Journal of Solid State Electrochemistry; Jul2022, Vol. 26 Issue 6/7, p1323-1331, 9p
- Publication Year :
- 2022
-
Abstract
- Non-noble metal for surface plasmon resonance (SPR)-induced nano-enzymatic photoelectrochemical (PEC) biosensors is a promising method for broad applications. Non-noble metal bismuth (Bi) is gradually being valued for their properties such as non-toxicity, abundant reserves, and good catalysis. Meanwhile, metallic Bi nanoparticles (NPs) have superior SPR properties similar to that of noble metal. Therefore, a non-noble metal Bi/BiVO<subscript>4</subscript> photoanode based on SPR was designed for the PEC detection of H<subscript>2</subscript>O<subscript>2</subscript> in this work. The synergistic effect of BiVO<subscript>4</subscript> with suitable band gap (2.5 eV) and Bi NPs with superior SPR effectively reduces the recombination of photogenerated electrons and holes, which significantly improves the PEC activity of Bi/BiVO<subscript>4</subscript> electrode at low voltage. The in situ Bi/BiVO<subscript>4</subscript>/FTO photoelectrode not only exhibits a more comprehensive linear range of 0.005–2.6 mM with a lower detection limit of 2.0 μM but also possesses excellent selectivity for the determination of H<subscript>2</subscript>O<subscript>2</subscript> because the coexisting substances are difficult to be oxidized at 0 V bias voltage. The investigation of Bi/BiVO<subscript>4</subscript>-based sensor has contributed to the development of non-noble metal for SPR-induced PEC biosensors. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 14328488
- Volume :
- 26
- Issue :
- 6/7
- Database :
- Complementary Index
- Journal :
- Journal of Solid State Electrochemistry
- Publication Type :
- Academic Journal
- Accession number :
- 157264250
- Full Text :
- https://doi.org/10.1007/s10008-022-05166-2