Pulsed laser-induced generation of gold-titania core-shell nanostructures: Tunable morphology and optical characteristics

IF 4.3 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Chemistry and Physics Pub Date : 2025-02-03 DOI:10.1016/j.matchemphys.2025.130503

Manal Alhathal , Mahmood Alhajj , A.A. Salim , Ganesan Krishnan , S.K. Ghoshal

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Abstract

The large-scale production of diverse nanostructures with tuneable properties and high-tech compatible performance remains challenging for numerous practical applications. Thus, some spherical gold-titania coreshell nanostructures (Au–TiO₂CSNSs) were prepared in deionized water (DIW) via the pulse laser ablation in liquid (PLAL) approach. The optical, structural, and morphological traits of the prepared CSNSs were tailored by adjusting the Q-switched Nd: YAG (1064 nm) laser parameters. TEM images of CSNSs revealed their crystalline spherical morphology with mean diameter of 8.11 ± 4.28 nm. EDX spectrum of CSNSs detected the presence of all chemical elements. XRD pattern, UV–Vis and FTIR spectra of these CSNSs disclosed their high crystallinity, robust optical absorbance and uniform dispersion in DIW, respectively. PL spectra of CSNSs showed intense emission peak around 332 nm. Optical band gap energy of CSNSs corresponded to 4.0 eV. The proposed CSNSs can be promising for UV-based technologies and optical coatings applications.

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来源期刊

Materials Chemistry and Physics 工程技术-材料科学：综合

CiteScore

8.70

自引率

4.30%

发文量

1515

审稿时长

69 days

期刊介绍： Materials Chemistry and Physics is devoted to short communications, full-length research papers and feature articles on interrelationships among structure, properties, processing and performance of materials. The Editors welcome manuscripts on thin films, surface and interface science, materials degradation and reliability, metallurgy, semiconductors and optoelectronic materials, fine ceramics, magnetics, superconductors, specialty polymers, nano-materials and composite materials.