ZnO/CuO nanocomposites exhibited good response in near whole visible light region.
ZnO/CuO showed enhanced adsorption properties to VOCs based on QCM sensors arrays.
ZnO/CuO/chitosan exhibited great enhancement to VOCs compared with ZnO/CuO.
ZnO/Cu2O, ZnO/Cu2O/chitosan et al. can also provide similar results.