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Structure and electronic properties of AunPt (n = 1–8) nanoalloy clusters: the density functional theory study

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Abstract

The study of bimetallic nanoalloy clusters is of considerable interest due to its interesting electronic, optical, magnetic and catalytic properties. The geometrical structure and electronic properties of AunPt (n = 1–8) nanoalloy clusters are studied by using the density functional theory methodology. The result exhibits that the ground-state configurations of AunPt clusters favour planar confirmation in this molecular range. The most stable cluster is Au3Pt, which is having rhombus structure with symmetry group C2v and can be considered as building blocks for developing large clusters. The computed HOMO-LUMO energy gap of Au3Pt nanoalloy cluster is 1.741 eV. The energy gap in this particular range supports the use of bimetallic clusters as nonlinear optical devices and optoelectronic materials. The DFT-based global descriptors viz. HOMO-LUMO energy gap, electronegativity, hardness, softness and electrophilicity index are also studied. The computed HOMO-LUMO energy gap and chemical hardness exhibit a pronounced odd-even oscillation behaviour as a function of cluster size, n.

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Acknowledgements

Authors are highly thankful to the Presidency University, Bengaluru and Manipal University, Jaipur, for their support to carry out the research.

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Authors and Affiliations

  1. Department of Mechatronics Engineering, Manipal University Jaipur, Dehmi Kalan, Jaipur, 303007, India

    Prabhat Ranjan

  2. Department of Chemistry, School of Engineering, Presidency University, Bengaluru, 560064, India

    Tanmoy Chakraborty

  3. Department of Chemistry, Manipal University Jaipur, Dehmi Kalan, Jaipur, 303007, India

    Tanmoy Chakraborty

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  1. Prabhat Ranjan
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Ranjan, P., Chakraborty, T. Structure and electronic properties of AunPt (n = 1–8) nanoalloy clusters: the density functional theory study. J Nanopart Res 22, 35 (2020). https://doi.org/10.1007/s11051-019-4745-5

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