Journal
CHEMICAL ENGINEERING JOURNAL
Volume 351, Issue -, Pages 177-188Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2018.06.098
Keywords
Bacterial cellulose; Direct electron transfer; Gold nanoparticles; Glucose; Biosensor
Categories
Funding
- National Natural Science Foundation of China [51641303]
- 111 Project [B17021]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
- State Scholarship Fund from China Scholarship Council [201706790088]
- Natural Science Foundation of Jiangsu Province [BK20150155]
- Innovation Program for Graduate Education in Jiangsu Province [KYLX16_0794, KYCX17_1437]
- Fundamental Research Funds for the Central Universities [JUSRP51621A]
- National First-class Discipline Program of Light and Engineering [LITE2018-21]
- Department of Education in Anhui Province of China [2015LJRCTD001]
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An Enzyme (glucose/O-2) BioFuel Cell (EBFC) was developed using glucose oxidase (GOx)-based bioanode and a laccase (Lac)-based biocathode with carboxylic multi-walled carbon nanotubes (c-MWCNTs) and gold nanoparticles (AuNPs)-modified bacterial cellulose (BC) electrode as the substrate. The open circuit potential (OCP) of the EBFC was inhibited and later activated by the self-powered electrochemical device. The device not only provided high power density (345.14 mu W cm(-3)), but also exhibited an unprecedented broad linear dynamic range from 0 to 50 mM with a lower detection limit of 2.874 mu M for glucose concentrations in biological media. This result was attributed to a synergistic mechanism between the enzymes, c-MWCNTs, and AuNPs in which direct electron transfer (DET) was facilitated from the catalytic centers of enzymes to the electrode surface. The BC-based nanocomposites may have great promise as flexible electrodes in the field of self-powered biosensors.
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