Improvement of Laccase Activity Via Covalent Immobilization over Mesoporous Silica Coated Magnetic Multiwalled Carbon Nanotubes for the Discoloration of Synthetic Dyes
Pascal Habimana, Jing Gao, Jean Pierre Mwizerwa, Jean Bernard Ndayambaje, Hengrao Liu, Pengqian Luan, Li Ma, Yanjun Jiang
Abstract
showed a good improvement in temperature, pH, and storage stability. Moreover, the operational stability of the biocatalyst was improved, retaining 87% of its original activity even after 10 cycles of 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) oxidation. The biocatalysts were applied for the decolorization of selected azo dyes without a mediator, and up to 99% of Eriochrome Black T (EBT), 98% of Acid Red 88 (AR 88), and 66% of Reactive Black 5 (RB5) were decolorized. Based on these properties, the biocatalysts can be potentially utilized in various environmental and industrial applications.
Topics & Concepts
LaccaseFourier transform infrared spectroscopyGlutaraldehydeMesoporous silicaChemical engineeringMesoporous materialMaterials scienceNuclear chemistryImmobilized enzymeNanocompositeChemistryScanning electron microscopeOrganic chemistryCatalysisNanotechnologyEnzymeComposite materialEngineeringEnzyme-mediated dye degradationElectrochemical sensors and biosensorsNanomaterials for catalytic reactions