Abstract
The optical and electronic characteristics of Ag13, Ag12Cu and Cu13 clusters with Ih symmetry were investigated using density functional theory (DFT) methods. Absorption peak red shifts clearly with increasing the Cu atoms in comparison of the absorption spectra of [Ag13]+, [Ag12Cu]+ and [Cu13]+ clusters at the singlet state. The electronic state densities show that the d-electrons play a crucial role in the Ag12Cu cluster. Mulliken charge analysis reveals the electrons of outer shell silver atoms in Ag12Cu cluster are more active than these of Ag13 and Cu13 clusters when excited from ground state to singlet state. HOMO–LUMO gaps of three clusters show the Ag12Cu cluster has a better metallic nature. The values of ionization potential (IP) and electronic affinity (EA) indicate that the Ag12Cu cluster has a more electronic activity than that of Ag13 or Cu13 cluster, which is interested to understand a catalytic mechanism of bimetallic nanoalloys.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.