The invention belongs to the technical field of electro-
catalysis, and particularly discloses a Cu
nanoparticle / acidified
carbon nanotube catalyst and a preparation method and application thereof.According to the preparation method, acidified pretreated carbon nanotubes with good
conductivity and high specific surface area are selected as a substrate,
CuO nanoparticles are evenly loaded through a hydrothermal method, and the Cu
nanoparticle / acidified
carbon nanotube catalyst is obtained; and growing a
zeolite imidazate framework material-8 (ZIF-8) on the surface of the CuO
nanoparticle-loaded
carbon nanotube in situ, and regulating the thickness of an ultrathin
nitrogen-
carbon layer on the surface and coordination of Cu-N by regulating the calcining temperature and time. According to the Cu nanoparticle / acidified carbon
nanotube catalyst as well as the preparation method and the application thereof, the
Cu nanoparticles are encapsulated in a confined manner, so that long-service-life electrically-driven CO2 is converted into a high-added-value C2 + product, catalytic active sites of the
Cu nanoparticles are fully exposed, the charge transfer rate is increased, and the
intrinsic activity of the Cu active sites is improved.