Hofer André, Taccardi Nicola, Moritz Michael, Wichmann Christoph, Hübner Sabine, Drobek Dominik, Engelhardt Matthias, Papastavrou Georg, Spiecker Erdmann, Papp Christian, Wasserscheid Peter, Bachmann Julien
Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Department of Chemistry and Pharmacy, Chemistry of Thin Film Materials, IZNF Cauerstr. 3 91058 Erlangen Germany
Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Department Chemical and Biological Engineering, Institute of Chemical Reaction Engineering (CRT) Egerlandstr. 3 91058 Erlangen Germany.
RSC Adv. 2023 Jan 27;13(6):4011-4018. doi: 10.1039/d2ra07585g. eCollection 2023 Jan 24.
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 SiO 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.
本研究建立了一种制备模型系统的方法，该系统用于在纳米结构基底上制备负载型催化活性液态金属溶液（SCALMS）。该模型的特点是对镓颗粒尺寸分布具有独特精确的几何控制。在SCALMS系统中，Ga用作基体材料，随后可在其上修饰催化活性材料。将相应的含Ga前驱体旋涂在预先通过电化学阳极氧化进行纳米结构化的铝基基底上。高度有序的基底通过原子层沉积（ALD）独立于形态用不同的氧化物涂层进行功能化。在氧化物界面上制备金属颗粒后，我们的模型系统在其几何参数（液滴直径、尺寸分布和粒子密度）方面的表征表明，SiO是实现高度可控几何形状的最合适表面。这种灵活的模型系统可以用溶解的贵金属催化剂进行功能化，以用于所选的应用。
