Mo-N-co-doped mesoporous TiO2 microspheres with enhanced visible light photocatalytic activity
| Autor: | Ayesha Khan Tareen, Minghui Yang, Heng Jiang, Hong Gong, Branislav Viliam Hakala, Rasaki Sefiu Abolaji, Honghong Liu, Mingming Zou |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Mechanical Engineering Doping Inorganic chemistry chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Nitrogen Oxygen 0104 chemical sciences Metal chemistry Chemical engineering Mechanics of Materials visual_art Photocatalysis visual_art.visual_art_medium Degradation (geology) General Materials Science 0210 nano-technology Mesoporous material Nitriding |
| Zdroj: | Materials Research Bulletin. 96:10-17 |
| ISSN: | 0025-5408 |
| DOI: | 10.1016/j.materresbull.2016.12.041 |
| Popis: | Mo-N-co-doped mesoporous TiO 2 microspheres were synthesized via a solvothermal method, followed by nitriding treatment under ammonia gas flow. The efficiency of the samples was investigated by monitoring the degradation of Rhodamine-B under visible light irradiation. The experimental results revealed that Mo-N-co-doped mesoporous TiO 2 microspheres showed better performances than Mo-TiO 2 microspheres. It was observed that; 0.1% molar quantity of Mo doped on TiO 2 at 500 °C for 2 h under nitriding conditions gave highest photocatalytic activities. The nitridation under ammonia gas of Mo-TiO 2 samples created oxygen vacant sites and led to incorporation of substitutional and interstitial Nitrogen. The enhanced visible light photocatalytic activities of Mo-N-co-doped TiO 2 photocatalyst was attributed to the large surface areas, narrow band gap and intense light absorbance in visible region. This study may create a promising and eco-friendly method towards synthesis of metal and non-metals co-doped on semiconductor materials to improve their photocatalytic activities and applications. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect