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Engineering composition-varied Au/PtTe hetero-junction-abundant nanotrough arrays as robust electrocatalysts for ethanol electrooxidation.
- Source :
-
Journal of Colloid & Interface Science . Sep2023, Vol. 646, p616-624. 9p. - Publication Year :
- 2023
-
Abstract
- Composition-varied Au/PtTe hetero-junction-abundant nanostructures are fabricated by combining interfacial self-assembly and interface-confined transformation strategy, and can be directly used as electrocatalysts of boosting ethanol electrooxidation. [Display omitted] Pt-based multi-metallic electrocatalysts containing hetero-junctions are found to have superior catalytic performance to composition-equivalent counterparts. However, in bulk solution, controllable preparation of Pt-based hetero-junction electrocatalyst is an extremely random work owing to the complexity of solution reactions. Herein, we develop an interface-confined transformation strategy, subtly achieving Au/PtTe hetero-junction-abundant nanostructures by employing interfacial Te nanowires as sacrificing templates. By controlling the reaction conditions, composition-varied Au/PtTe can be easily obtained, such as Au 75 /Pt 20 Te 5 , Au 55 /Pt 34 Te 11 , and Au 5 /Pt 69 Te 26. Moreover, each Au/PtTe hetero-junction nanostructure appears to be an array consisting of side-by-side Au/PtTe nanotrough units and can be directly used as a catalyst layer without further post-treatment. All Au/PtTe hetero-junction nanostructures show better catalytic activity towards ethanol electrooxidation than commercial Pt/C because of the combining contributions of Au/Pt hetero-junctions and the collective effects of multi-metallic elements, where Au 75 /Pt 20 Te 5 exhibits the best electrocatalytic performance among three Au/PtTe nanostructures owing to its optimal composition. This study may provide technically feasible guidance for further maximizing the catalytic activity of Pt-based hybrid catalysts. [ABSTRACT FROM AUTHOR]
- Subjects :
- *ETHANOL
*ELECTROCATALYSTS
*CATALYTIC activity
*NANOSTRUCTURES
*NANOWIRES
*CATALYSTS
Subjects
Details
- Language :
- English
- ISSN :
- 00219797
- Volume :
- 646
- Database :
- Academic Search Index
- Journal :
- Journal of Colloid & Interface Science
- Publication Type :
- Academic Journal
- Accession number :
- 164019548
- Full Text :
- https://doi.org/10.1016/j.jcis.2023.05.025