Experimental and numerical study on photocatalytic activity of the ZnO nanorods/CuO composite film.

ABSTRACT: The photocatalytic activity of the ZnO NRs/CuO composite film was investigated by using both experimental and numerical methods. The ZnO NRs/CuO composite film exhibits significantly enlarge absorption range to visible-light and suppress the recombination rate of the photogenerated electron-hole pairs, which can be well utilized as a photocatalyst. The ZnO NRs/CuO composite film also presents good stability, and reusability, and durability for photo-decomposition purpose. The optimal ZnO NRs/CuO composite film contains 1?-thick of CuO film and 10 nm-thick of ZnO NRs film. The donor concentration in ZnO NRs film should be lower than 1016?cm-3. The short circuit current density of the optimal composite film is 25.8?mA/cm2 resulting in the calculated pseudo-order rate constant of 1.85?s-1. The enhancement in degradation efficiency of this composite film is attributed to the inner electric field and large effective surface area of ZnO NRs film.

SUBMITTER: Nguyen DT 

PROVIDER: S-EPMC7211011 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature