Efficient and durable ZnO core-shell structures for photocatalytic applications in aqueous media

摘要: Abstract Core-shell nanostructures were synthesized by aerosol assisted chemical vapor deposition method. A ZnO nanorod (ZNR) was the core material, while shell coating individually film of Ti, Cu-Zn or Fe oxide. The crystalline phases materials identified as oxides in form wurtzite (ZnO), anatase (TiO2), tenorite (CuO) and hematite (Fe2O3). Only for samples prepared using single Ti sources, amorphous shells detected. photocatalytic performance all tested discoloration methylene blue. Findings confirmed that bare nanorods commercial photocatalyst (Degussa P25) are comparable photocatalysts since 99% dye achieved 60 min. Additionally, tests performed with core-shell revealed ZNR/TiOx ZNR/CuO-ZnO exhibited more than 93% Nevertheless, involving ZNR/Fe2O3 ZNR/FeOx/TiO2/Fe2O3, a maximum 33% measured. Microstructural changes before after photocatalysis essays examined. Results showed CuO-ZnO coated dissolved aqueous medium. Conversely, integrity evidenced through morphological structural analysis, when TiOx multiple FeOx Fe2O3 layers, employed. Furthermore, quantitative measurement Zn solubility selected to confirm dissolution inhibition. Noteworthy, outcomes suggest functionality applied systems could be assured solely developed material.