Hydrotalcite-like anionic clays substituted with iron / laccase, composites for biosensors applications

Gabriela Carja; Gabriela Ciobanu; Gabriela Apostolescu; Sofronia Dranca; Nicolae Apostolescu

doi:10.1117/12.823626

6 January 2009 Hydrotalcite-like anionic clays substituted with iron / laccase, composites for biosensors applications

Gabriela Carja, Gabriela Ciobanu, Gabriela Apostolescu, Sofronia Dranca, Nicolae Apostolescu

Proceedings Volume 7297, Advanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies IV; 72970G (2009) https://doi.org/10.1117/12.823626
Event: Advanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies IV, 2008, Constanta, Romania

Abstract

Laccase - based biosensors are important for the selective determination of the phenolic compounds in the environmental matrices. The features of the enzyme immobilisation process and the characteristics of the inorganic porous matrix adsorbed on the electrode surface are both important for establishing the biosensor performances. This work presents the synthesis and physical-chemical characteristics of new hybrid materials based on iron containing layered double hydroxides / laccase. XRD and TGA-DTA analyses give information about the structural characteristics and thermal behaviour of the tested hybrids. The SEM images show the presence of a well crystallized texture of organized ensembles of platelets-like particles stacking on top of one another. The presence of iron in the substituted clay matrix is able to give rise to the specific redox properties that can be further used to tailor not only the laccase immobilisation process but also the biological sensing response of the biohybrid-transducer device.

Citation Download Citation

Gabriela Carja, Gabriela Ciobanu, Gabriela Apostolescu, Sofronia Dranca, and Nicolae Apostolescu "Hydrotalcite-like anionic clays substituted with iron / laccase, composites for biosensors applications", Proc. SPIE 7297, Advanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies IV, 72970G (6 January 2009); https://doi.org/10.1117/12.823626

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KEYWORDS

Iron

Biosensors

Scanning electron microscopy

Biosensing

Matrices

Chemical elements

Composites

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