Preparation of geometrically highly controlled Ga particle arrays on quasi-planar nanostructured surfaces as a SCALMS model system

Hofer A, Taccardi N, Moritz M, Wichmann C, Hübner S, Drobek D, Engelhardt M, Papastavrou G, Spiecker E, Papp C, Wasserscheid P, Bachmann J (2023)

Publication Type: Journal article

Publication year: 2023

Journal

RSC Advances Royal Society of Chemistry

Book Volume: 13

Pages Range: 4011-4018

Issue: 6

DOI: 10.1039/D2RA07585G

Abstract

This study establishes a preparative route towards a model system for supported catalytically active liquid metal solutions (SCALMS) on nanostructured substrates. This model is characterized by a uniquely precise geometrical control of the gallium particle size distribution. In a SCALMS system, the Ga serves as a matrix material which can be decorated with a catalytically active material subsequently. The corresponding Ga containing precursor is spin-coated on aluminum based substrates, previously nanostructured by electrochemical anodization. The highly ordered substrates are functionalized with distinct oxide coatings by atomic layer deposition (ALD) independently from the morphology. After preparation of the metal particles on the oxide interface, the characterization of our model system in terms of its geometry parameters (droplet diameter, size distribution and population density) points to SiO2 as the best suited surface for a highly controlled geometry. This flexible model system can be functionalized with a dissolved noble metal catalyst for the application chosen.

Authors with CRIS profile

André Hofer Lehrstuhl für Chemistry of thin film materials Nicola Taccardi Lehrstuhl für Chemische Reaktionstechnik Michael Moritz Lehrstuhl für Physikalische Chemie II Christoph Wichmann Collaborative Research Centre 1452/1 Catalysis at Liquid Interfaces (CLINT) Sabine Hübner Graduiertenkolleg 1896/2 In situ Mikroskopie mit Elektronen, Röntgenstrahlen und Rastersonden Dominik Drobek Lehrstuhl für Werkstoffwissenschaften (Mikro- und Nanostrukturforschung) Erdmann Spiecker Lehrstuhl für Werkstoffwissenschaften (Mikro- und Nanostrukturforschung) Christian Papp Lehrstuhl für Physikalische Chemie II Peter Wasserscheid Lehrstuhl für Chemische Reaktionstechnik Julien Bachmann Lehrstuhl für Chemistry of thin film materials

Additional Organisation(s)

Graduiertenkolleg 1896/2 In situ Mikroskopie mit Elektronen, Röntgenstrahlen und Rastersonden Interdisziplinäres Zentrum, Center for Nanoanalysis and Electron Microscopy (CENEM)

Related research project(s)

Scale-bridging tomography and in situ microscopy of SCALMS (A03) (SFB 1452 CLINT A03) Catalysis at Liquid Interfaces (CLINT) (SFB 1452 CLINT) Jan. 1, 2021 - Dec. 31, 2024 Tuneable supports and geometry effects in SCALMS catalysis (A04) (SFB 1452 CLINT A04) Catalysis at Liquid Interfaces (CLINT) (SFB 1452 CLINT) Jan. 1, 2021 - Dec. 31, 2024

Involved external institutions

Universität Bayreuth DE Germany (DE)

How to cite

APA:

Hofer, A., Taccardi, N., Moritz, M., Wichmann, C., Hübner, S., Drobek, D.,... Bachmann, J. (2023). Preparation of geometrically highly controlled Ga particle arrays on quasi-planar nanostructured surfaces as a SCALMS model system. RSC Advances, 13, 4011-4018. https://doi.org/10.1039/D2RA07585G

MLA:

Hofer, André, et al. "Preparation of geometrically highly controlled Ga particle arrays on quasi-planar nanostructured surfaces as a SCALMS model system." RSC Advances 13 (2023): 4011-4018.

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