Highly efficient direct oxygen electro-reduction by partially unfolded laccases immobilized on waste-derived magnetically separable nanoparticles. Issue 8 (9th February 2018)

• Record Type: Journal Article
• Authors: Rodríguez-Padrón, Daily; Puente-Santiago, Alain R.; Caballero, Alvaro; Balu, Alina M.; Romero, Antonio A.; Luque, Rafael
• Is Part Of: Nanoscale. Volume 10:Issue 8(2018)
• Page Start: 3961
• Page End: 3968
• Publication Date: 2018-02-09
• Subjects: Nanoscience -- Periodicals; Nanotechnology -- Periodicals; 620.505
• DOI: 10.1039/c8nr00512e
• Languages: English
• ISSNs: 2040-3364

Abstract

Abstract : A biocatalytic system based on laccase functionalized waste-derived iron oxide nanoparticles (LAC-DA-Fe2 O3 ) was designed by a mechanochemical approach and employed in the electrocatalytic reduction of oxygen. Abstract : A biocatalytic system based on laccase functionalized waste-derived iron oxide nanoparticles (LAC-DA-Fe2 O3 ) was designed by a mechanochemical approach and employed in the electrocatalytic reduction of oxygen. Full characterization of the obtained bioconjugates revealed that the protein adopted a partially unfolded state. The mentioned configuration, together with the geometry coordination changes along the T1 center can be further related to a high bioelectrocatalytic response. A current density up to 2.9 mA cm −2 has been achieved, which is among the highest values reported in literature for laccase functionalized nanomaterials.