Add time:09/06/2019         Source:sciencedirect.com

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.

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