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

被引：0
|
作者：
Alhathal, Manal [1 ,2 ,3 ]
Alhajj, Mahmood [1 ,2 ]
Salim, A. A. [1 ,2 ]
Krishnan, Ganesan [1 ,2 ]
Ghoshal, S. K. [1 ,2 ]
机构：
[1] Univ Teknol Malaysia, Fac Sci, Phys Dept, ISI SIR CsNano, Johor Baharu, Malaysia
[2] Univ Teknol Malaysia, Fac Sci, Laser Ctr, ISI SIR CsNano, Johor Baharu, Malaysia
[3] Univ Hail, Coll Sci, Phys Dept, Hail, Saudi Arabia
来源：
MATERIALS CHEMISTRY AND PHYSICS | 2025年 / 334卷
关键词：
Laser ablation; Nanoparticles; Coreshell structure; Band gap; Morphology; METAL NANOPARTICLES; ABLATION; LIQUID; AU;
D O I：
10.1016/j.matchemphys.2025.130503
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
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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页数：15
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