Universität zu Köln

Krakor, Eva, Gessner, Isabel ORCID: 0000-0001-9674-161X, Wilhelm, Michael ORCID: 0000-0002-4764-6955, Brune, Veronika ORCID: 0000-0001-5909-621X, Hohnsen, Johannes, Frenzen, Lars and Mathur, Sanjay (2021). Selective degradation of synthetic polymers through enzymes immobilized on nanocarriers. MRS Commun., 11 (3). S. 363 - 372. HEIDELBERG: SPRINGER HEIDELBERG. ISSN 2159-6867

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Abstract

In order to develop new sustainable and reusable concepts for the degradation of omnipresent industrial plastics, immobilization of (bio)catalysts on nanocarriers offers unique opportunities for selective depolymerization and catalyst recovery. In this study, enzymes (lipase and cutinase) were covalently immobilized on carrier nanoparticles (SiO2 and Fe3O4@SiO2) through 3-(aminopropyl)trimethoxysilane and glutaraldehyde linkers forming a stable bond to enzyme molecules. The presence of enzymes on the surface was confirmed by zeta potential and XPS measurements, while their degradation activity and long-term stability of up to 144 h was demonstrated by the conversion of 4-nitrophenyl acetate to 4-nitrophenol. Furthermore, enzymatic decomposition (hydrolysis/oxidation) of electrospun polycaprolactone fiber mats was verified through morphological (SEM) and weight loss studies, which evidently showed a change in the fiber morphology due to enzymatic degradation and accordingly a weight loss. Graphic abstract

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Krakor, Eva UNSPECIFIED UNSPECIFIED UNSPECIFIED Gessner, Isabel UNSPECIFIED orcid.org/0000-0001-9674-161X UNSPECIFIED Wilhelm, Michael UNSPECIFIED orcid.org/0000-0002-4764-6955 UNSPECIFIED Brune, Veronika UNSPECIFIED orcid.org/0000-0001-5909-621X UNSPECIFIED Hohnsen, Johannes UNSPECIFIED UNSPECIFIED UNSPECIFIED Frenzen, Lars UNSPECIFIED UNSPECIFIED UNSPECIFIED Mathur, Sanjay UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-563408
DOI:	10.1557/s43579-021-00039-7
Journal or Publication Title:	MRS Commun.
Volume:	11
Number:	3
Page Range:	S. 363 - 372
Date:	2021
Publisher:	SPRINGER HEIDELBERG
Place of Publication:	HEIDELBERG
ISSN:	2159-6867
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language COVALENT IMMOBILIZATION; LIPASE; NANOPARTICLES; ADSORPTION; MIEHEI Multiple languages Materials Science, Multidisciplinary Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/56340