当前位置: X-MOL 学术Langmuir › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Fabrication of Gold-Based “Sphere-on-Plate” Hybrid Nanostructures with Dual Plasmonic Absorptions Covering Visible and Near-Infrared II Windows via the Volmer–Weber Growth Mode
Langmuir ( IF 3.7 ) Pub Date : 2022-07-25 , DOI: 10.1021/acs.langmuir.2c01289
Na Zhao 1 , Shiyue Wu 2 , Yi Wang 2 , Feng Liu 3 , Yanyun Ma 4 , Haifeng Zhang 1 , Maochang Liu 3 , Yiqun Zheng 1
Affiliation  

We report a synthetic strategy to create gold(Au)-based “sphere-on-plate” hybrid nanostructures (SPHNSs). The surface doping of plate-like Au seeds with Pt/Ag atoms is found to be crucial to increase the lattice spacing, inducing island-like deposition of Au atoms via the Volmer–Weber growth mode. The resulting products are featured with the morphology that quasi-spherical nanoparticles are scattered over the nanoplates. Due to the presence of two distinctly dimensioned particles in one entity, the current Au-based SPHNSs exhibit unique dual plasmonic absorptions, where the visible absorbance centered at 546 nm is related to the size of the anchored particles. Arising from such a plasmonic advantage, the Au-based SPHNSs exhibit enhancement in photothermal conversion under laser irradiations at the wavelengths of both 808 and 1064 nm. The current work offers a feasible route to fabricate noble metal hybrid nanostructures involving zero-dimensional (0D) and two-dimensional (2D) structures, which could work as promising materials for photothermal conversion.

中文翻译:

通过沃尔默-韦伯生长模式制备具有双等离子体吸收的金基“板上球体”混合纳米结构,覆盖可见光和近红外 II 窗口

我们报告了一种合成策略来创建基于金 (Au) 的“板上球体”混合纳米结构 (SPHNS)。发现具有 Pt/Ag 原子的板状 Au 种子的表面掺杂对于增加晶格间距、诱导 Au 原子的岛状沉积至关重要沃尔默-韦伯增长模式。所得产品具有准球形纳米粒子散布在纳米板上的形态特征。由于在一个实体中存在两个不同尺寸的粒子,当前基于 Au 的 SPHNS 表现出独特的双等离子体吸收,其中以 546 nm 为中心的可见光吸收与锚定粒子的大小有关。由于这种等离子体优势,基于Au的SPHNS在808和1064 nm波长的激光照射下表现出光热转换的增强。目前的工作为制造涉及零维(0D)和二维(2D)结构的贵金属杂化纳米结构提供了一条可行的途径,可以作为有前途的光热转换材料。
更新日期:2022-07-25
down
wechat
bug