Improved interface compatibility of hollow H-Zr0.1Ti0.9O2 with UiO-66-NH2 via Zr-Ti bidirectional penetration to boost visible photocatalytic activity for acetaldehyde degradation under high humidity
| Autor: | Zhenxia Zhao, Shanliang Jiang, Ruimeng Wang, Zhu Gao, Hongbing Ji, Zhongxing Zhao, Peng Hu |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
Process Chemistry and Technology 02 engineering and technology engineering.material 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Catalysis 0104 chemical sciences Metal X-ray photoelectron spectroscopy Chemical engineering visual_art Mass transfer Compatibility (mechanics) visual_art.visual_art_medium engineering Photocatalysis Degradation (geology) Noble metal 0210 nano-technology Order of magnitude General Environmental Science |
| Zdroj: | Applied Catalysis B: Environmental. 296:120371 |
| ISSN: | 0926-3373 |
| Popis: | Well-defined construction of interface compatibility is greatly helpful to overcome interface attenuation, featuring the combined advantages from different photo-catalysts. Herein, we proposed “Interfacial metal interpenetration” strategy to engineer a novel hetero-structural TiOx@UiO-66-NH2 photocatalyst (H-Zr0.1Ti0.9O2@U6N) having core-shell characters and well-organized interface compatibility for acetaldehyde (ALD) degradation. XRD refinement and XPS showed that Zr and Ti clusters were proved to induce the lattice expansion of H-Zr0.1Ti0.9O2 and lattice shrink of UiO-66-NH2, respectively. This strategy efficiently overcame transmission jam of photo-induced electrons, facilitating the separation efficiency of electron-holes. Furthermore, improved interface compatibility and hollow merits of H-Zr0.1Ti0.9@U6N jointly expedited the mass transfer of reactants, shortening the “adsorption-catalysis” pathway. Therefore, H-Zr0.1Ti0.9O2@U6N showed about two orders of magnitude increase of catalytic kinetics (195 × 10−3 min-1) compared to H-TiO2 (0.002 min-1) at 75 % relative humidity (RH), far beyond noble metal modified photo-catalyst Ag@TiO2 (11.9 × 10−3 min-1). The “Interfacial metal interpenetration” strategy can effectively improve material compatibility and award multiplying effects for different photo-catalysts. |
| Databáze: | OpenAIRE |
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