A self-powered biosensing device with an integrated hybrid biofuel cell for intermittent monitoring of analytes.
Biosens Bioelectron
; 102: 383-388, 2018 Apr 15.
Article
em En
| MEDLINE
| ID: mdl-29174971
ABSTRACT
In this work, we propose an integrated self-powered sensing system, driven by a hybrid biofuel cell (HBFC) with carbon paper discs coated with multiwalled carbon nanotubes. The sensing system has a biocathode made from laccase or bilirubin oxidase, and the anode is made from a zinc plate. The system includes a dedicated custom-built electronic control unit for the detection of oxygen and catechol analytes, which are central to medical and environmental applications. Both the HBFC and sensors, operate in a mediatorless direct electron transfer mode. The measured characteristics of the HBFC with externally applied resistance included the power-time dependencies under flow cell conditions, the sensors performance (evaluated by cyclic voltammetry), and chronoamperometry. The HBFC is integrated with analytical devices and operating in a pulse mode form long-run monitoring experiments. The HBFC generated sufficient power for wireless data transmission to a local computer.
Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Técnicas Biossensoriais
/
Nanotubos de Carbono
/
Enzimas Imobilizadas
/
Biocombustíveis
Idioma:
En
Ano de publicação:
2018
Tipo de documento:
Article