Herein, we synthesized the cadmium sulfide nanoparticles (CdS-NPs) coated zinc oxide nanorods (ZnO-NRs) core-shell like CdS-NPs@ZnO-NRs heterojunction for photo(electro)chemical applications. The CdS-NPs and ZnO-NRs were through a simple hydrothermal path. physicochemical optoelectronic properties of as-prepared catalysts are characterized by various spectroscopy techniques, such as FTIR, XRD, ...