Atomically dispersed Pt (II) on WO3 for highly selective sensing and catalytic oxidation of triethylamine
| Autor: | Maria Flytzani-Stephanopoulos, Dongmei Han, Zhihua Wang, Song Hong, Fubo Gu, Yuzhen Cui |
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| Rok vydání: | 2019 |
| Předmět: |
chemistry.chemical_classification
Detection limit Materials science Process Chemistry and Technology Inorganic chemistry 02 engineering and technology Activation energy Colloidal crystal 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Catalysis 0104 chemical sciences chemistry.chemical_compound chemistry Catalytic oxidation Selective adsorption Volatile organic compound 0210 nano-technology Triethylamine General Environmental Science Template method pattern |
| Zdroj: | Applied Catalysis B: Environmental. 256:117809 |
| ISSN: | 0926-3373 |
| Popis: | Triethylamine is a volatile organic compound and harmful to the environment. Development of an efficient detection and conversion method for triethylamine becomes urgent. In this work, Pt loaded three-dimensionally ordered macroporous (3DOM) WO3 materials were successfully synthesized through a colloidal crystal template method. Compared to Pt clusters on the surface, atomically dispersed Pt (II) on WO3 increased the number of active sites and decrease the activation energy, which resulted in highly efficient oxidation and high sensitivity detection of triethylamine. The sensor based on the 3DOM SA-Pt/WO3 with atomically dispersed Pt (II) exhibited super high sensitivity (28.37 ppm−1) and ultra-low detection limit (0.18 ppb) to triethylamine. The high selectivity possibly originated from the selective adsorption of triethylamine from other volatile organic compounds on the uniform single atom Pt (II) sites. |
| Databáze: | OpenAIRE |
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