Facile formation of Anatase Nanoparticles on H-Titanate Nanotubes at Low Temperature for Efficient Visible Light-Driven Degradation of Organic Pollutants
| Autor: | Lun Zhao, Zhiqiang Shi, Jinyu Dai, Zongtao Zhang, Deguang Zhang, Fu Weiwei, Helong Bai, Zhiming Lu, Feifei Lei |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Anatase
Nanotube in-situ formation Materials science Nanoparticle 02 engineering and technology low temperature 010402 general chemistry lcsh:Chemical technology 01 natural sciences Catalysis Crystal lcsh:Chemistry H-titanate nanotubes lcsh:TP1-1185 Physical and Theoretical Chemistry Ion exchange anatase nanoparticles 021001 nanoscience & nanotechnology 0104 chemical sciences Chemical engineering Dehydration reaction lcsh:QD1-999 Photocatalysis dual-phase 0210 nano-technology Visible spectrum |
| Zdroj: | Catalysts, Vol 10, Iss 695, p 695 (2020) |
| ISSN: | 2073-4344 |
| Popis: | Anatase nanoparticles (5–10 nm) generated on H-titanate nanotube surface (H-titanate/anatase) were prepared by an ingenious and simple method. H-titanate tubes were prepared by a hydrothermal reaction of Ti powder in concentrated NaOH solution and an ion exchange process with HNO3 solution. After that, at a relatively low drying temperature (100 °C), a small quantity of anatase nanoparticles were in-situ formed on the H-titanate tubes surface by a surface dehydration reaction. In-situ transformation can form a strong interface coupling between H-titanate and anatase, which is conducive to accelerating charge transfer and improving its photocatalytic activity. In addition, the smaller average crystal size, the large specific surface areas (BET), the nanotubed and layered structure and the synergistic effect of dual phases would be beneficial to improving the photocatalytic efficiency. |
| Databáze: | OpenAIRE |
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