Preparation of microporous zeolites TiO 2 /SSZ-13 composite photocatalyst and its photocatalytic reactivity
| Autor: | Xinrong Lei, Jieyu Chen, Yuanhui Wang, Yujie Ren |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Materials science
02 engineering and technology General Chemistry Microporous material 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Photochemistry 01 natural sciences 0104 chemical sciences Catalysis SSZ-13 chemistry.chemical_compound chemistry Chemical engineering Mechanics of Materials Photocatalysis General Materials Science Reactivity (chemistry) 0210 nano-technology Zeolite Methylene blue Hydrogen production |
| Zdroj: | Microporous and Mesoporous Materials. 250:9-17 |
| ISSN: | 1387-1811 |
| DOI: | 10.1016/j.micromeso.2017.05.011 |
| Popis: | Development of novel hybrid photocatalysts with high efficiency and durability for photocatalytic hydrogen generation is highly desired but still remains a grand challenge currently. In the present work, TiO 2 -doped microporous zeolite SSZ-13 with varying amounts of TiO 2 were prepared using solid state dispersion (SSD) method, as photocatalysts for the evolution of photocatalytic degradation of methylene blue and H 2 evolution under UV–vis irradiation. The incorporation of P25 into SSZ-13 zeolite significantly enhanced the photocatalytic activity for H 2 evolution (reduction) and degradation of methylene blue (oxidation). And the most efficient photocatalyst was proven to 60%TiO 2 loading, whose H 2 generation (126.7 μmol/h) was profoundly enhanced for 3 times with respect to P25 (37.2 μmol/h) and degradation rate of methylene blue was 96% within 2.5 h. The photocatalysts were characterized by XRD, SEM, BET, UV–vis and PL. The results showed TiO 2 were well dispersed on the surface of zeolite and the strong interaction between P25 and SSZ-13 zeolite, which improved significantly photocatalytic performance of P25. This study suggested the potential photocatalytic application of microporous zeolite SSZ-13 as a catalyst carrier. |
| Databáze: | OpenAIRE |
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