Universität zu Köln

Bruder, Valentin, Ludwig, Tim, Opitz, Stephan ORCID: 0000-0003-0416-542X, Christoffels, Ronja, Fischer, Thomas and Maleki, Hajar ORCID: 0000-0002-2813-4700 (2021). Hierarchical Assembly of Surface Modified Silk Fibroin Biomass into Micro-, and Milli-Metric Hybrid Aerogels with Core-Shell, Janus, and Composite Configurations for Rapid Removal of Water Pollutants. Adv. Mater. Interfaces, 8 (5). HOBOKEN: WILEY. ISSN 2196-7350

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Abstract

Multifunctional aerogels, with intriguing micro-morphologies and macroscopic sizes, are fabricated for the first time from silk fibroin (SF) biopolymer extracted from Bombyx mori silkworm cocoon to optimize the adsorption performances of heavy metal ions and soluble organic pollutants. By a synergistic combination of approaches such as surface-modification of SF with polyethyleneimine (PEI) and its hierarchical cryo-assembly with graphene oxide into various macrostructures, namely core-shell, composite, and Janus, series of millimetric aerogels (2-3 mm) with interesting center divergent honeycomb micro-morphologies are prepared. In addition, cryo-assembly assisted electro-spraying of SF-PEI led to obtaining micro-aerogels (74 mu m), possessing a wrinkled surface morphology with a high surface area. The aerogel beads exhibit superior adsorption capacities for Cu2+ (186.7 mg g(-1), in 240 min) with a regeneration potential, but also for anionic dyes, for example, methylene orange (811.3 mg g(-1)) and organic solvents (1138 g g(-1)% for chloroform). The large adsorption capacities and fast adsorption kinetics of cations obtained by these aerogels are attributed to their impressive micro-morphologies and small geometries, enabling rapid diffusion and cations uptake. Therefore, the sustainability, biodegradability, ease of fabrications, rapid, and reusable adsorption performance make aerogel beads of this study highly potent for multipollutant adsorption.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Bruder, Valentin UNSPECIFIED UNSPECIFIED UNSPECIFIED Ludwig, Tim UNSPECIFIED UNSPECIFIED UNSPECIFIED Opitz, Stephan UNSPECIFIED orcid.org/0000-0003-0416-542X UNSPECIFIED Christoffels, Ronja UNSPECIFIED UNSPECIFIED UNSPECIFIED Fischer, Thomas UNSPECIFIED UNSPECIFIED UNSPECIFIED Maleki, Hajar UNSPECIFIED orcid.org/0000-0002-2813-4700 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-565014
DOI:	10.1002/admi.202001892
Journal or Publication Title:	Adv. Mater. Interfaces
Volume:	8
Number:	5
Date:	2021
Publisher:	WILEY
Place of Publication:	HOBOKEN
ISSN:	2196-7350
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language Chemistry, Multidisciplinary; Materials Science, Multidisciplinary Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/56501