In order to obtain a high photoelectrochemical performance, co-catalysts loading is the most commonly used way, which can facilitate reactions and suppress the charge recombination. In this paper, a novel composite of ZnO/Ti3C2TX photoanode was fabricated by a facile spin coating of precipitating Ti3C2TX (MXene) flakes onto the surface of ZnO, as co-catalyst for enhanced photoelectrochemical (PEC) water splitting. Under simulated sunlight, the optimum composite of ZnO/Ti3C2TX photoanode showed the photocurrent density as 1.2 mA cm−2 at 1.23 VR...