“…The outstanding photocatalytic performance was observed due to heterojunction formation among the g-C 3 N 4 , CuO-NPs, and ZnO-NPs compounds, which minimized the photogenerated e − -h + pair recombination and increased the electron flow rate. Li et al [9] modified polyacrylonitrile hollow nanospheres (HPAN) derived from the polymerization of acrylonitrile in the presence of polystyrene emulsion (as template) using surface amination with ethylenediamine (EDA), using them as a support for loading Pd or PdCo nanoparticles. The authors demonstrated that the prepared PdCo nanoparticles supported on the surface of aminated polyacrylonitrile hollow nanospheres (EDA-HPAN) could be used as a highly active and stable catalyst for the dehydrogenation of formic acid.…”