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. 2024 Nov 15;9(47):46773-46783.
doi: 10.1021/acsomega.4c03143. eCollection 2024 Nov 26.

Polyol-Assisted Synthesis of Ni/Cu/Ag Trimetallic Nanoparticles for Nonlinear Optical Applications

Shilpa Molakkalu Padre  1 , Shivakumar Jagadish Shetty  1 , Saideep Shirish Bhat  1 , Desmond Gracian Rebello  1 , Srivathsava Surabhi  2   3 , Shreya Rao  1 , Neelamma Basayya Gummagol  4 , Maqsood Rafique Waikar  5 , Rajendra Girjappa Sonkawade  5 , Gurumurthy Sangam Chandrasekhar  1
Affiliations

Polyol-Assisted Synthesis of Ni/Cu/Ag Trimetallic Nanoparticles for Nonlinear Optical Applications

Shilpa Molakkalu Padre et al. ACS Omega. .

Abstract

Trimetallic nanoparticles (TMNPs) have opened a broad spectrum of applications with a new class of materialistic combinations in several fields from electronics to medicinal and environmental applications. In this work, we report the synthesis and characterization of Ni/Cu/Ag TMNPs using the polyol method and their nonlinear optical (NLO) studies. A broad surface plasmon resonance (SPR) peak at 443 nm evidences the formation of the Ni/Cu/Ag TMNPs with a peak shift compared to their mono- or bimetallic counterparts. The NLO studies showed promising results, indicating that Ni/Cu/Ag TMNPs have potential applications in optoelectronics. The calculated nonlinear absorption coefficient (β) confirmed thermally induced excited-state absorption by the prepared TMNPs. Closed-aperture z-scan analysis demonstrated a self-focusing effect, indicating a nonlinear refractive index (n2). Further, the suitability of Ni/Cu/Ag TMNPs for optical limiting application is assessed.

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Conflict of interest statement

The authors declare no competing financial interest.

Figures

Figure 1
Figure 1
(a) UV–vis absorption spectra of Ag NPs, Cu NPs, CuAg BMNPs, and Ni/Cu/Ag TMNPs. (b) PL spectra and (c) XRD pattern of Ni/Cu/Ag TMNPs.
Figure 2
Figure 2
(a) FESEM image of Ni/Cu/Ag TMNPs. (b) Energy-dispersive X-ray spectra of TMNPs.
Figure 3
Figure 3
(a–c) TEM images of TMNPs and (d) SAED pattern obtained from Figure 3(c). (e–h) Dark-field images corresponding to the given SAED pattern. Inset: Particle size distribution histogram.
Figure 4
Figure 4
(a–d) Representative false-color EDS elemental maps.
Figure 5
Figure 5
(a) Survey spectra, HR-XPS of (b) Ni 2p, (c) Cu 2p, (d) Ag 3d, and (e) O 1s of TMNPs.
Figure 6
Figure 6
(a) Open-aperture (OA) Z-scan curves of Ni/Cu/Ag TMNPs. (b) Closed-aperture (CA) Z-scan curves of Ni/Cu/Ag TMNPs.
Figure 7
Figure 7
Optical limiting behavior of Ni/Cu/Ag TMNPs.
See this image and copyright information in PMC

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