| Autor: |
Xuejuan, Zhao, Zelin, Hua, Long, Li, Haiyang, Li, Zewu, Zhang, Xiaobao, Li, Xiaoli, Gu, Licheng, Li |
| Rok vydání: |
2019 |
| Zdroj: |
Journal of nanoscience and nanotechnology. 20(2) |
| ISSN: |
1533-4899 |
| Popis: |
The catalyst Au/cellulose@TiO₂ with a hierarchical structure was one-pot synthesized by conventional deposition-precipitation urea method. Nanosized TiO₂ particles, instead of self-agglomeration, homogeneously dispersed on the microsized microcrystalline cellulose. Simultaneously, gold particles with particle size of about 3.4 nm were mainly well-deposited on TiO₂ particles. It was found that the surface charges of TiO₂, cellulose and gold species played a key role in assisting in selfassembling them into the hierarchical structure. p-nitrophenol hydrogenation results displayed that the catalytic activity of Au/cellulose@TiO₂ was 1.8 times and 10.9 times higher than that of Au/TiO₂ and Au/cellulose, respectively. The improvement in catalytic performance of Au/cellulose@TiO₂ was closely related to its hierarchical structure that influenced mass transfer of reactants and recycle of catalysts. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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