Photoelectrochemical Performance of Brookite Titanium Dioxide Electrodeposited on Graphene Foam for Portable Biosensors

We discuss the photoelectroanalytical performance of a brookite-phase titanium dioxide (TiO<sub>2</sub>) platform electrodeposited onto graphene foam (GF) at low temperatures. The scalable electrosynthesis process eliminates the need for thermal annealing, which is impractical for carbon-based electrodes. Films resulting from a 10 min electrodeposition (TiO<sub>2</sub>-10/GF) exhibit enhanced photocurrents, reaching 170 μA cm<sup>-2</sup> <sub>GEO</sub>-twice the value for TiO<sub>2</sub> films on traditional screen-printed carbon electrodes (82 μA cm<sup>-2</sup> <sub>GEO</sub>). The increased photocurrent density makes TiO<sub>2</sub>-10/GF ideal for on-site photoelectrochemical biosensors as it allows for the use of compact systems with low-power LEDs.

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Publication Details

Journal
ACS Omega
Published
2024-12-16
DOI
https://doi.org/10.1021/acsomega.4c08624
Citations
3
Primary Topic
Electrochemical sensors and biosensors
Type
article
Field-Weighted Citation Impact
0.63

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article

Photoelectrochemical Performance of Brookite Titanium Dioxide Electrodeposited on Graphene Foam for Portable Biosensors

Osvaldo N. Oliveira, Gabriel J. C. Pimentel, José L. Bott‐Neto, Frank Marken et al.
3 citations
ACS Omega
Electrochemical sensors and biosensors
0.63
article

Photoelectrochemical Performance of Brookite Titanium Dioxide Electrodeposited on Graphene Foam for Portable Biosensors

Osvaldo N. Oliveira, Gabriel J. C. Pimentel, José L. Bott‐Neto, Frank Marken, Thiago S. Martins
article en
3 citations

Abstract

We discuss the photoelectroanalytical performance of a brookite-phase titanium dioxide (TiO<sub>2</sub>) platform electrodeposited onto graphene foam (GF) at low temperatures. The scalable electrosynthesis process eliminates the need for thermal annealing, which is impractical for carbon-based electrodes. Films resulting from a 10 min electrodeposition (TiO<sub>2</sub>-10/GF) exhibit enhanced photocurrents, reaching 170 μA cm<sup>-2</sup> <sub>GEO</sub>-twice the value for TiO<sub>2</sub> films on traditional screen-printed carbon electrodes (82 μA cm<sup>-2</sup> <sub>GEO</sub>). The increased photocurrent density makes TiO<sub>2</sub>-10/GF ideal for on-site photoelectrochemical biosensors as it allows for the use of compact systems with low-power LEDs.

ACS OmegaVol. 9(52)
Universidade Federal de São Carlos (BR), Universidade de São Paulo (BR), Universidade Estadual de Campinas (UNICAMP) (BR), FZU ‒ Institute of Physics of the Academy of Sciences of the Czech Republic (CZ), Brazilian Center for Research in Energy and Materials (BR), Laboratório Nacional de Nanotecnologia, Imperial College London (GB), University of Bath (GB)
Fundação de Amparo à Pesquisa do Estado de São Paulo, Coordenação de Aperfeiçoamento de Pessoal de Nível Superior, Conselho Nacional de Desenvolvimento Científico e Tecnológico, Instituto Nacional de Ciência e Tecnologia em Eletrônica Orgânica
Affordable and clean energy
Openalex Percentile: Top 30%
Electrochemical sensors and biosensors
0.63
DOIOpen Access PDFOpenAlex
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