“…[12][13][14] Additionally, ZnO is often selected owing to its superior advantages, including low cost, high quantum efficiency, environmental efficiency, biodegradability, and ease of alteration, in various microstructures. 15,16 Moreover, TiO 2 and ZnO have very similar physicochemical properties, including nontoxicity, thermal and chemical stability, biocompatibility, and mechanical strength. 15 To date, few studies have investigated the combination of TiO 2 and ZnO, although the ratio of ZnO plays a vital role in the photocatalytic and structural characteristics.…”