The crystal facets of catalysts and structure-performance relationship are of great importance in the fields of materials science and catalysis.In this paper,a specialized experiment is designed for senior undergraduates majored in chemical engineering and related disciplines,which focus on the crystal facet-control synthesis and the crystal facets dependent catalytic performance.The different morphologies of Cu2O were prepared,including cubic Cu2O-c with six planes of(100)and the polyhedral Cu2O-14 with six planes of(100)and eight planes of(111).The catalytic performance of Cu2O-c and Cu2O-14 is evaluated through the electrochemical reduction of CO2.Due to their different exposing facets,Cu2O-14 has the higher activity than Cu2O-c,and the selectivity of ethylene and ethanol products is greatly improved.It can be This experiment can help undergraduates understand the control synthesis of the crystal and the structure-activity relationship between crystal plane and the catalytic performance.
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