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Pd-loaded SnO2 ultrathin nanorod-assembled hollow microspheres with the significant improvement for toluene detection.
- Source :
-
Sensors & Actuators B: Chemical . May2017, Vol. 243, p465-474. 10p. - Publication Year :
- 2017
-
Abstract
- Pd-loaded SnO 2 hollow microspheres have been successfully prepared via a facile one-pot hydrothermal route and subsequent Pd-loaded treatment without involving any templates, surfactants, or capping agents. The morphological and structural characterization confirms that Pd-loaded SnO 2 hollow microspheres are hierarchically constructed of numerous well-aligned rodlike SnO 2 subunits with ultrathin diameter of about 5–10 nm and monodisperse Pd particles with several nanometers in size. The time-dependent investigation demonstrates that the formation of hierarchical SnO 2 hollow spheres is driven by Ostwald-ripening mechanism. Furthermore, gas sensors based on pure and Pd-loaded SnO 2 have been fabricated. The Pd-loaded SnO 2 hollow microspheres exhibit relatively lower operating temperature, higher response and selectivity to toluene in comparison with that of pure SnO 2 . Besides structural merits of ultrathin nanorod-assembled hollow and porous structure, the promotion of sensing performances can also be attributed to the contribution of catalytic Pd particles. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09254005
- Volume :
- 243
- Database :
- Academic Search Index
- Journal :
- Sensors & Actuators B: Chemical
- Publication Type :
- Academic Journal
- Accession number :
- 121221332
- Full Text :
- https://doi.org/10.1016/j.snb.2016.11.153