Synergistic Effects of Multiple Heterojunctions and Dopant Atom for Enhancing the Photocatalytic Activity of C-Modified Zn-Doped TiO2 Nanofiber Film

To design efficient photocatalytic systems, it is necessary to inhibit the compounding of electron-hole pairs and promote light absorption in photocatalysts. In this paper, semiconductor heterojunction systems C-modified Zn-doped TiO2 composite nanomaterials with nanofiber structures were synthesized by electrospinning hydrothermal methods. The film was thoroughly characterized morphology, structure, chemical phases optical properties determined. Scanning electron microscopy confirmed that diameter 150–200 nm C particles uniformly modified on smooth surfaces. X–ray diffraction patterns Raman show as a typical anatase, graphite Zn ZnOcrystals. Moreover, entry into lattice increases crystal defects. Meanwhile, TiO2, ZnO form multiple heterojunctions, providing pathways for photogenerated carrier transfer. These synergistic effects recombination provide more reaction sites, thus improving efficiency. UV-Vis diffuse reflectance spectroscopy fluorescence spectroscopyimply these lead improved composite. Using organic dyes (methylene blue, methyl orange, rhodamine Bandmalachite green) simulated pollutants, exhibited good activity all due significantly large specific surface area, small size effect heterojunctions dopant atom. addition, has reusability stability photodegradation dyes, so potential industrial applications.