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Decoration of Pt on Cu/Co double-doped CeO 2 nanospheres and their greatly enhanced catalytic activity.
- Source :
-
Chemical science [Chem Sci] 2016 Mar 01; Vol. 7 (3), pp. 1867-1873. Date of Electronic Publication: 2015 Nov 25. - Publication Year :
- 2016
-
Abstract
- In this paper, we report an efficient strategy for the synthesis of Cu/Co double-doped CeO <subscript>2</subscript> nanospheres (Cu <subscript> x </subscript> Co <subscript>1- x </subscript> -CeO <subscript>2</subscript> -Pt, 0 ≤ x ≤ 1), which were fabricated via a simple water-glycol system. The following in situ surface decoration of Pt nanoparticles make these nanospheres highly active for the catalytic reduction of nitrophenol and CO oxidation. Detailed tests show that their catalytic performance strongly depends on the doping components and ion concentration of Cu and Co ions. The best samples of Cu <subscript>0.50</subscript> Co <subscript>0.50</subscript> -CeO <subscript>2</subscript> -Pt and Cu <subscript>0.34</subscript> Co <subscript>0.66</subscript> -CeO <subscript>2</subscript> -Pt demonstrate an excellent turnover frequency (TOF) of more than 450 h <superscript>-1</superscript> after five cycles and retains about 99% conversion by using NH <subscript>3</subscript> BH <subscript>3</subscript> as a reductant to reduce nitrophenol. Moreover, Cu <subscript>0.50</subscript> Co <subscript>0.50</subscript> -CeO <subscript>2</subscript> -Pt possesses a much lower light-off and T <subscript>100</subscript> (the temperature for 100% CO oxidation) temperature compared with the other catalysts.
Details
- Language :
- English
- ISSN :
- 2041-6520
- Volume :
- 7
- Issue :
- 3
- Database :
- MEDLINE
- Journal :
- Chemical science
- Publication Type :
- Academic Journal
- Accession number :
- 29899909
- Full Text :
- https://doi.org/10.1039/c5sc04069h