Controllable fabrications of multicore-shell Au@ZnO nanostructures for plasmonic photocatalysis

IF 4.2 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY Optical Materials Pub Date : 2025-03-05 DOI:10.1016/j.optmat.2025.116898

Shiya Rong , Pengfei Cheng , Weiming Song , Xuyan Zhang , Jieming Huang , Guofu Zhou , Zhang Zhang , Junming Liu

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Abstract

Core-shell nanostructures have attracted the interest of many researchers due to their unique structural features and suitable band structure match. However, the fabricated core-shell nanostructures generally have only one core, which makes it challenging to explore the collective effect of multiple cores. Herein, two kinds of multicore-shell Au@ZIF-8 and Au@ZnO were synthesized, focusing on the effect of Au concentration on the optical and photocatalytic properties of the latter. By controlling the concentration of Au precursor, different quantities of Au NPs can be encapsulated in one ZIF-8 nanocrystal. Consequently, the hybridization effect and its localized surface plasmon resonance effect of Au NPs could also be accordingly regulated, with Au-0.4@ZnO showing the best photocatalytic activity. This work offers a new inspiration on regulating the plasmonic properties of the multicore-shell nanostructure, which holds an appealing prospect in plasmonic photocatalysis, surface-enhanced Raman scattering detection, and intermediates identification in catalytic reactions.

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用于等离子体光催化的多核壳纳米结构的可控制备Au@ZnO

核壳纳米结构由于其独特的结构特点和合适的能带匹配而引起了许多研究者的兴趣。然而，制备的核-壳纳米结构通常只有一个核，这给探索多核的集体效应带来了挑战。本文合成了两种多核壳材料Au@ZIF-8和Au@ZnO，重点研究了Au浓度对后者光学和光催化性能的影响。通过控制Au前驱体的浓度，可以在一个ZIF-8纳米晶体中包裹不同数量的Au NPs。因此，Au NPs的杂化效应及其局部表面等离子体共振效应也可以相应调节，其中Au-0.4@ZnO表现出最好的光催化活性。本研究为调控多核壳纳米结构的等离子体特性提供了新的思路，在等离子体光催化、表面增强拉曼散射检测、催化反应中间体鉴定等方面具有广阔的应用前景。

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来源期刊

Optical Materials 工程技术-材料科学：综合

CiteScore

6.60

自引率

12.80%

发文量

1265

审稿时长

38 days

期刊介绍： Optical Materials has an open access mirror journal Optical Materials: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. The purpose of Optical Materials is to provide a means of communication and technology transfer between researchers who are interested in materials for potential device applications. The journal publishes original papers and review articles on the design, synthesis, characterisation and applications of optical materials. OPTICAL MATERIALS focuses on: • Optical Properties of Material Systems; • The Materials Aspects of Optical Phenomena; • The Materials Aspects of Devices and Applications. Authors can submit separate research elements describing their data to Data in Brief and methods to Methods X.