Screening of catalytic effects on copper-zinc thin film combinatorial libraries for formaldehyde oxidation

A CuZn thin film combinatorial library was fabricated using a thermal co‐evaporator. Using scanning electron microscopy (SEM), X‐ray fluorescence spectroscopy (XRF) and X‐ray diffraction (XRD) microcstructure, composition and crystallographic properties were investigated. Pure brass alloys were evi...

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Bibliographic Details
Published in:Physica status solidi. A, Applications and materials science Applications and materials science, 2015-06, Vol.212 (6), p.1184-1190
Main Authors: Pötzelberger, Isabella, Mardare, Andrei Ionut, Hassel, Achim Walter
Format: Article
Language:English
Subjects:
ALDEHYDES
Alloys
Brasses
Combinatorial analysis
Copper
Droplets
electrocatalytic oxidation
Formaldehyde
LATTICE PARAMETERS
Libraries
MATHEMATICAL ANALYSIS
Microscopy
Oxidation
scanning droplet cell microscopy
Solid solutions
thin film combinatorial libraries
THIN FILMS
Zinc
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Summary:A CuZn thin film combinatorial library was fabricated using a thermal co‐evaporator. Using scanning electron microscopy (SEM), X‐ray fluorescence spectroscopy (XRF) and X‐ray diffraction (XRD) microcstructure, composition and crystallographic properties were investigated. Pure brass alloys were evidenced due to solid solution mixing of Cu and Zn. The crystallite size and lattice parameters were calculated and compared with values of pure Cu and α‐brass. With the aid of scanning in a wide compositional spread (3.4 at.% Zn to 27 at.% Zn). droplet cell microscopy (SDCM) the thermally evaporated CuZn thin film combinatorial library was screened for electrocatalytic effects on the formaldehyde oxidation. The obtained cyclic voltammograms show the occurrence of the formaldehyde oxidation leading to formic acid. CuZn thin film alloys were examined for their electrocatalytic oxidation of formaldehyde in an aqueous 0.1 M Na2SO4 solution at different pH values using cyclic voltammetry. The highest catalytic effect was obtained at a pH value of 13.0 for a composition of Cu–8.0 at.% Zn.
ISSN:1862-6300
1862-6319
DOI:10.1002/pssa.201431598