Research output: Contribution to journal › Article › peer-review
Tunable Photocatalytic Activity of PEO-Stabilized ZnO–Polyoxometalate Nanostructures in Aqueous Solution. / Bernhardt, Sarah; Düring, Jasmin; Haschke, Sandra; Barr, Maissa K.S.; Stiegler, Lisa; Schühle, Patrick; Bachmann, Julien; Hirsch, Andreas; Gröhn, Franziska.
In: Advanced Materials Interfaces, Vol. 8, No. 14, 2002130, 23.07.2021.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Tunable Photocatalytic Activity of PEO-Stabilized ZnO–Polyoxometalate Nanostructures in Aqueous Solution
AU - Bernhardt, Sarah
AU - Düring, Jasmin
AU - Haschke, Sandra
AU - Barr, Maissa K.S.
AU - Stiegler, Lisa
AU - Schühle, Patrick
AU - Bachmann, Julien
AU - Hirsch, Andreas
AU - Gröhn, Franziska
N1 - Publisher Copyright: © 2021 The Authors. Advanced Materials Interfaces published by Wiley-VCH GmbH
PY - 2021/7/23
Y1 - 2021/7/23
N2 - The photocatalytic activity and selectivity of novel binary and ternary composite nanostructures from polyethylene oxide-stabilized zinc oxide (PEO–ZnO) with and without polyoxometalate (H4[Si(W3O10)4], POM) are determined in aqueous solution under UV-light. Mono- and di-COOH-end-functionalized PEO polymers are used as surface modifiers, influencing the morphology and stability of the ZnO nanoparticles being synthesized in water. POM acts as an additional versatile photocatalytically active building block resulting in a ternary hybrid structure with tunable photocatalytic activity. Catalytic selectivity is demonstrated by studying photocatalytic dye degradations as model reactions, where the chemical backbone of the dyes and their charge turn out to be the basis for the selectivity. All samples are characterized with dynamic light scattering, transmission electron microscopy, scanning electron microscopy, light microscopy, and ζ-potential measurements. With the functionalized PEOs, large ZnO clusters consisting of leaves are formed while 2-[2-(2-methoxyethoxy) ethoxy] acetic acid (TODA) yields ZnO flower-like structures.
AB - The photocatalytic activity and selectivity of novel binary and ternary composite nanostructures from polyethylene oxide-stabilized zinc oxide (PEO–ZnO) with and without polyoxometalate (H4[Si(W3O10)4], POM) are determined in aqueous solution under UV-light. Mono- and di-COOH-end-functionalized PEO polymers are used as surface modifiers, influencing the morphology and stability of the ZnO nanoparticles being synthesized in water. POM acts as an additional versatile photocatalytically active building block resulting in a ternary hybrid structure with tunable photocatalytic activity. Catalytic selectivity is demonstrated by studying photocatalytic dye degradations as model reactions, where the chemical backbone of the dyes and their charge turn out to be the basis for the selectivity. All samples are characterized with dynamic light scattering, transmission electron microscopy, scanning electron microscopy, light microscopy, and ζ-potential measurements. With the functionalized PEOs, large ZnO clusters consisting of leaves are formed while 2-[2-(2-methoxyethoxy) ethoxy] acetic acid (TODA) yields ZnO flower-like structures.
KW - organic–inorganic hybrid materials
KW - photocatalysis
KW - polyoxometalate
KW - solar energy conversion
KW - zinc oxide nanoparticles
KW - H4SIW12O40
KW - ZINC-OXIDE
KW - NANOCRYSTALS
KW - organic-inorganic hybrid materials
KW - ONE-STEP
KW - FACILE SYNTHESIS
KW - METHYL-ORANGE
KW - SURFACE
KW - DEGRADATION
KW - FABRICATION
KW - METAL NANOPARTICLES
UR - http://www.scopus.com/inward/record.url?scp=85111948625&partnerID=8YFLogxK
UR - https://www.mendeley.com/catalogue/2e428085-f78d-3501-899b-1914d3bb4c1a/
U2 - 10.1002/admi.202002130
DO - 10.1002/admi.202002130
M3 - Article
AN - SCOPUS:85111948625
VL - 8
JO - Advanced Materials Interfaces
JF - Advanced Materials Interfaces
SN - 2196-7350
IS - 14
M1 - 2002130
ER -
ID: 86101523