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DOI: 10.5445/IR/1000080083
Veröffentlicht am 06.03.2018

Bombyx mori silk/titania/gold hybrid materials for photocatalytic water splitting: combining renewable raw materials with clean fuels

Krüger, S.; Schwarze, M.; Baumann, O.; Günter, C.; Bruns, M.; Kübel, C.; Szabó, D. V.; Meinusch, R.; Bermudez, V. Z.; Taubert, A.

The synthesis, structure, and photocatalytic water splitting performance of two new titania (TiO2)/gold(Au)/Bombyx mori silk hybrid materials are reported. All materials are monoliths with diameters of up to ca. 4.5 cm. The materials are macroscopically homogeneous and porous with surface areas between 170 and 210 m2/g. The diameter of the TiO2 nanoparticles (NPs) – mainly anatase with a minor fraction of brookite – and the Au NPs are on the order of 5 and 7–18 nm, respectively. Addition of poly(ethylene oxide) to the reaction mixture enables pore size tuning, thus providing access to different materials with different photocatalytic activities. Water splitting experiments using a sunlight simulator and a Xe lamp show that the new hybrid materials are effective water splitting catalysts and produce up to 30 mmol of hydrogen per 24 h. Overall the article demonstrates that the combination of a renewable and robust scaffold such as B. mori silk with a photoactive material provides a promising approach to new monolithic photocatalysts that can easily be recycled and show great potential for application in lightweight devices for green f ... mehr

Zugehörige Institution(en) am KIT Fakultät für Maschinenbau (MACH)
Institut für Nanotechnologie (INT)
Karlsruhe Nano Micro Facility (KNMF)
Institut für Angewandte Materialien - Werkstoffkunde (IAM-WK)
Publikationstyp Zeitschriftenaufsatz
Jahr 2018
Sprache Englisch
Identifikator ISSN: 2190-4286
URN: urn:nbn:de:swb:90-800834
KITopen ID: 1000080083
HGF-Programm 49.02.01; LK 01
Erschienen in Beilstein journal of nanotechnology
Band 9
Heft 1
Seiten 187-204
Schlagworte Bombyx mori silk; gold; photocatalytic water splitting; titania
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