School of Physics and Technology;
Wuhan University;
Wuhan 430072;
China;
Wuhan Research Center for Infectious Diseases and Cancer;
Chinese Academy of Medical Sciences;
Wuhan 430072;
China;
Department of Physics;
City University of Hong Kong;
Hong Kong 999077;
China;
CuNi alloy; acetonitrile reduction reaction; d-orbital coupling modulation; in-situ spectroscopy analysis; acetonitrile adsorption;