Core-shell Prussian blue analogues@ poly(m-phenylenediamine) as efficient peroxymonosulfate activators for degradation of Rhodamine B with reduced metal leaching
| Autor: | Yangke Long, Ling Xiao, Xiaowen Shi, Mingyu Wei, Liang Zeng, Jinying Cao |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Prussian blue
Nanoparticle chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Catalysis Biomaterials m-Phenylenediamine Metal chemistry.chemical_compound Colloid and Surface Chemistry chemistry visual_art Rhodamine B visual_art.visual_art_medium Leaching (metallurgy) 0210 nano-technology Cobalt Nuclear chemistry |
| Zdroj: | Journal of Colloid and Interface Science. 534:586-594 |
| ISSN: | 0021-9797 |
| Popis: | Herein, Prussian blue analogues@poly(m-phenylenediamine) nanoparticles (PBA@PmPDs) with well-defined core-shell structure were synthesized. The successful coating of poly(m-phenylenediamine) (PmPD) on the surface of FeyCo3-y [Co(CN)6]2 (Fe-Co-Co PBA) was confirmed by SEM, TEM, XRD, TGA, FT-IR and XPS. The catalytic performance of Fe-Co-Co PBA@PmPDs was evaluated by activation of peroxymonosulfate (PMS) for degradation of Rhodamine B (RhB), the effects of different influence factors on the RhB degradation efficiency were investigated, including PMS concentration, temperature, initial solution pH, and co-existing inorganic salts. Cobalt ions leaching and stability of the catalysts were studied, Co ions concentration dissolved into the solution from the solid catalysts at 60 min is reduced by half after the Fe-Co-Co PBA is coated with PmPDs. The RhB removal efficiency is higher than 90% even after four cycles and the nanoparticles still maintain the core-shell structure, indicating that Fe-Co-Co PBA@PmPDs is stabile and reusable. Radical quenching experiments and electron paramagnetic resonance spectra indicate that both SO4 − and OH are generated during the PMS activation process and SO4 − is the dominant reactive species. In virtue of its superior catalytic activity, excellent reusability and stability, low metallic ion leaching, Fe-Co-Co PBA@PmPDs could be a promising catalyst for the remediation of contaminated water. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect