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

IF 4.7 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY Materials Chemistry and Physics Pub Date : 2025-04-01 Epub 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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脉冲激光诱导生成金-钛核-壳纳米结构：可调形貌和光学特性

大规模生产具有可调谐性能和高科技兼容性能的各种纳米结构在许多实际应用中仍然具有挑战性。为此，在去离子水（DIW）中采用脉冲激光烧蚀（PLAL）方法制备了一些球形金钛核壳纳米结构（Au-TiO2CSNSs）。通过调整调q Nd: YAG （1064 nm）激光参数，制备的CSNSs具有不同的光学、结构和形态特征。透射电镜显示，CSNSs的晶型为球形，平均直径为8.11±4.28 nm。CSNSs的EDX光谱检测到所有化学元素的存在。CSNSs的XRD、UV-Vis和FTIR光谱分别表明其结晶度高、吸光度强、在DIW中的分散均匀。CSNSs的PL光谱在332 nm附近有强烈的发射峰。CSNSs的光带隙能量为4.0 eV。所提出的CSNSs在基于uv的技术和光学涂层应用中具有前景。

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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.