Abstract
In this article, a method for the synthesis of catalysts for methanol electrooxidation based on additive manufacturing and electroless metal deposition is presented. The research work was divided into two parts. Firstly, coatings were obtained on a flat substrate made of light-hardening resin dedicated to 3D printing. Copper was deposited by catalytic metallization. Then, the deposited Cu coatings were modified by palladium through a galvanic displacement process. The catalytic properties of the obtained coatings were analyzed in a solution of 0.1 M NaOH and 1 M methanol. The influence of the deposition time of copper and palladium on the catalytic properties of the coatings was investigated. Based on these results, the optimal parameters for the deposition were determined. In the second part of the research work, 3D prints with a large specific surface were metallized. The elements were covered with a copper layer and modified by palladium, then chronoamperometric curves were determined. The application of the proposed method could allow for the production of elements with good catalytic properties, complex geometry with a large specific surface area, small volume and low weight.
Highlights
Additive manufacturing is a technique that is increasingly used in new technologies [1,2,3]
The advantage of this technique is the possibility of producing elements from materials such as plastic, metal or materials based on composites [5,6,7]
The modification of elements produced by the 3D printing method is carried out, for example by covering them with metallic coatings
Summary
Additive manufacturing is a technique that is increasingly used in new technologies [1,2,3]. The use of 3D printing techniques allows for a quick transition from a digital model to a physical object. This ensures great flexibility in adapting a given geometry, as opposed to classical production methods like machining or casting for metallic parts or injection molding for plastics [4]. The advantage of this technique is the possibility of producing elements from materials such as plastic, metal or materials based on composites [5,6,7]. Thanks to the listed advantages and many possibilities, additive manufacturing has found many applications in many fields, for example in new technologies, medicine [8], catalysis [9,10,11] and electrochemistry [12,13,14,15,16,17]
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