Enhanced visible-light-driven photocatalysis of Bi2YO4Cl heterostructures functionallized by bimetallic RhNi nanoparticles
| Autor: | Vidya Sagar Choppella, Anil Kumar Mokshagundam, L. John Berchmans, Sunil G. Babu, Gosipathala Sreedhar, M. Kiruba, Korupolu Raghu Babu, Palepu Teja Ravindar |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Nanoparticle chemistry.chemical_element Heterojunction 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Rhodium Bismuth Rhodamine chemistry.chemical_compound chemistry Chemical engineering Photocatalysis General Materials Science 0210 nano-technology Bimetallic strip Visible spectrum |
| Zdroj: | Frontiers of Materials Science. 12:405-414 |
| ISSN: | 2095-0268 2095-025X |
| DOI: | 10.1007/s11706-018-0435-y |
| Popis: | Bismuth-based Sillen-Aurivillius compounds are being explored as efficient photocatalyst materials for the degradation of organic pollutants due to their unique layered structure that favours effective separation of electron-hole pairs. In this work, we synthesized Sillen-Aurivillius-related Bi2YO4Cl with the bandgap of 2.5 eV by a simple solid-state reaction and sensitized with rhodium nickel (RhNi) nanoparticles (NPs) to form the RhNi/Bi2YO4Cl heterostructure. Photocatalytic activities of BiOCl, Bi2YO4Cl and the RhNi/Bi2YO4Cl heterostructure were examined for the degradation of rhodamine- 6G under visible-light illumination. Results demonstrated that the photocatalytic dye degradation efficiency of RhNi/Bi2YO4Cl heterostructures is higher than those of BiOCl and Bi2YO4Cl, attributed to the synergistic molecular-scale alloying effect of bimetallic RhNi NPs. The plausible mechanism for the degradation of rhodamine-6G and the effective electron-hole pair utilization mechanism were discussed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink