Green synthesis of nickel species in situ modified hollow microsphere TiO2 with enhanced photocatalytic activity
| Autor: | Qifeng Chen, Jie Chen, Yanchuan Guo, Xiaofeng Cao, Qi Wang, Baosheng Ren, Zenan Qin |
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| Rok vydání: | 2016 |
| Předmět: |
Anatase
Materials science Oxalic acid Inorganic chemistry General Physics and Astronomy chemistry.chemical_element Isopropyl alcohol 02 engineering and technology Surfaces and Interfaces General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Microstructure 01 natural sciences 0104 chemical sciences Surfaces Coatings and Films chemistry.chemical_compound Nickel chemistry Chemical engineering Reagent Photocatalysis 0210 nano-technology Mesoporous material |
| Zdroj: | Applied Surface Science. 364:1-8 |
| ISSN: | 0169-4332 |
| DOI: | 10.1016/j.apsusc.2015.12.033 |
| Popis: | A green template-free solvothermal approach was developed to synthesize hollow microsphere TiO2-modified in situ with nickel species (Ni2+/Ni3+). Oxalic acid played a pivotal role in the formation of hollow architecture, acting as chelating agent, structure-directing reagent, and acidity-modulation reagent, while isopropyl alcohol ensured the formation of spherical structure. The microstructure and composition of the products were characterized with various techniques, and the results showed that the products exhibited not only highly crystallized anatase phase, large specific surface areas, and the mesoporous shell and hollow architecture, but also the coexistence of Ni2+/Ni3+. The unique structure and composition of the photocatalysts resulted in improved UV and visible photocatalytic activity for degradation of Rhodamine-B and 2,4-dichlorophenol. |
| Databáze: | OpenAIRE |
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