Reasons for the deactivation of Pt0/TiO2 photocatalyst treated by inert gas N2
| Autor: | Zhensheng Jin, Ke Wang, Jiwei Zhang, Zhishen Wu, Min Zhang, Jingju Wang |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
Chemistry
General Physics and Astronomy Mineralogy chemistry.chemical_element Surfaces and Interfaces General Chemistry Condensed Matter Physics Redox Surfaces Coatings and Films Titanium oxide Metal Sputtering Transmission electron microscopy visual_art visual_art.visual_art_medium Photocatalysis Platinum Inert gas Nuclear chemistry |
| Zdroj: | Applied Surface Science. 254:5375-5379 |
| ISSN: | 0169-4332 |
| DOI: | 10.1016/j.apsusc.2008.02.079 |
| Popis: | The effect of N 2 treatment on the photocatalytic activity of Pt 0 /TiO 2 was investigated. The results showed that after treatment at 500 °C in N 2 , 70% of the photocatalytic activity of 1.0 wt.% Pt 0 /TiO 2 was lost by the evaluation of photocatalytic oxidation reaction of C 3 H 6 . Transmission electron microscopy (TEM) and Ar + ion sputtering tests revealed that in the course of high-temperature N 2 treatment, the size of Pt 0 particles on TiO 2 increases and a strong interaction between metal and support, i.e. Pt 0 particles encapsulated by Ti x O y , happens, which are the reasons for the deactivation of Pt 0 /TiO 2 photocatalyst treated by high-temperature N 2 . |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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