Journal
ACS CATALYSIS
Volume 10, Issue 24, Pages 15104-15113Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acscatal.0c04016
Keywords
cathodic corrosion; oxygen reduction; glycerol oxidation; catalyst structure; rational catalyst design
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Developing active and selective electrocatalysts is of prime importance in shifting society toward utilizing renewable energy sources. Such developments often require catalysts with particular morphologies because many chemical reactions are sensitive to the catalyst structure. However, it can be challenging to synthesize and stabilize shape-controlled catalysts. It would therefore be desirable to tailor the morphology of an existing electrocatalyst to exhibit favorable catalytic properties. In this work, such morphological alteration is explored using cathodic corrosion: an electrochemical etching process that can generate geometrical shapes on metallic surfaces. Specifically, cathodic corrosion is utilized to tailor a well-defined Pt(111) electrode for oxygen reduction and glycerol oxidation catalysis. Both the oxygen reduction activity and the glycerol oxidation selectivity can be tailored by controlling the cathodic corrosion conditions. These results demonstrate the specific potential of cathodic corrosion for tailoring catalyst activity and selectivity.
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