Synthesis of Pt-based alloy nanostructures
DOI:
https://doi.org/10.17159/Abstract
Optimizing the catalytic performance of multi-metallic nanoparticle (NP) catalysts demands a concrete understanding of their design, while preferentially deploying wet-chemical synthesis procedures to precisely control surface structural properties of the NPs. Herein, we report the influence of reductants such as hydrogen-rich tetrabutylammonium borohydride (TBAB) and carbon monoxide-rich molybdenum carbonyl (Mo(CO)6) on the shape- and morphological-evolution of Pt-based binary (PtNi and PtCo) and ternary (PtNiAu and PtCoAu) nanostructures derived from a homogeneous solution of amine-based surface active agents (surfactants) in a high boiling point solvent. We successfully synthesized nanostructures exhibiting well-defined and composition-controlled surfaces deploying a one-pot synthetic approach; the development of the surface properties was however observed to be alloy specific. The resultant highly monodisperse alloy NP with narrow size distributions and facet-orientated surfaces are expected to display enhanced functionality as catalysts for utilization in specific chemical reactions.
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Copyright (c) 2024 Gerard M. Leteba, Eric van Steen
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