Ultrasound-driven green synthesis of highly stable CsPbBr<sub>3</sub>@MS-SiO<sub>2</sub> composites in a water-oil biphasic system

MA Teng; XIE Jinfeng; ZHANG Shirui; DU Haiqiong; ZHAO Chengsi; XUE Qi; HUANG He

doi:10.37188/CJLCD.2025-0093

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Ultrasound-driven green synthesis of highly stable CsPbBr₃@MS-SiO₂ composites in a water-oil biphasic system

Quantum Dot Luminescent Materials | 更新时间：2026-09-12

- Ultrasound-driven green synthesis of highly stable CsPbBr₃@MS-SiO₂ composites in a water-oil biphasic system
- Chinese Journal of Liquid Crystals and Displays Vol. 41, Issue 1, Pages: 16-25(2026)
- 作者机构：
  
  1.苏州大学光电科学与工程学院，江苏苏州 215006
  2.苏州大学物理科学与技术学院，江苏苏州 215006
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China(52102185;52402198);Jiangsu Provincial Department of Science and Technology leading technology basic research major project(BK20232041;BK20240821);Project of International Joint Laboratory on Low-Dimensional Optoelectronic Materials and Devices of Soochow University as well as the Suzhou Foreign Academician Workstation
- DOI：10.37188/CJLCD.2025-0093
  CLC： O482.31
- CSTR：32172.14.CJLCD.2025-0093
- Received：25 April 2025，
  
  Revised：2025-05-13，
  
  Published：05 January 2026
- 稿件说明：
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MA Teng, XIE Jinfeng, ZHANG Shirui, et al. Ultrasound-driven green synthesis of highly stable CsPbBr₃@MS-SiO₂ composites in a water-oil biphasic system[J]. Chinese Journal of Liquid Crystals and Displays, 2026, 41(1): 16-25. DOI: 10.37188/CJLCD.2025-0093. CSTR: 32172.14.CJLCD.2025-0093.
DOI：

MA Teng, XIE Jinfeng, ZHANG Shirui, et al. Ultrasound-driven green synthesis of highly stable CsPbBr₃@MS-SiO₂ composites in a water-oil biphasic system[J]. Chinese Journal of Liquid Crystals and Displays, 2026, 41(1): 16-25. DOI: 10.37188/CJLCD.2025-0093. CSTR: 32172.14.CJLCD.2025-0093. DOI：

摘要

卤化铅钙钛矿纳米晶因其优异的光学性能而受到广泛关注，但其环境稳定性差以及传统合成路径中存在高毒性问题仍制约着其实际应用。本文提出在水/油两相中通过超声诱导策略，在介孔硅微球（MS）中原位合成包覆的CsPbBr

（CsPbBr

@MS）复合材料。在该方法中，无配体的CsBr水溶液与预先分散在介孔硅微球中的油酸铅在超声波的作用下，实现了离子由水相向油相介孔中扩散，在介孔硅微球中原位成核并最终封装CsPbBr

纳米晶。通过光学性质研究与稳定性测试探究，表面包覆层对CsPbBr

@MS复合材料的发光性能以及稳定性都有较大提升。适度的CsBr水溶液量也可以优化材料的光学性质，产物最高荧光量子产率高达60%。随后，结合介质孔中微量水溶液辅助正硅酸乙酯水解，在CsPbBr

@MS复合材料表面构建了致密的SiO

壳层，显著提升了光学稳定性。经过水中浸泡60 h后，该材料的发射强度仍可保持初始值的80%。该工作为绿色合成稳定、高性能钙钛矿纳米材料提供了新策略。

Abstract

Lead halide perovskite nanocrystals have garnered significant interest due to their exceptional optical properties. However， their poor environ

mental stability and the toxicity of conventional synthetic methods continue to impede practical applications. In this study， we report a novel ultrasound-assisted， green water/oil biphasic strategy for the in situ synthesis of CsPbBr

nanocrystals encapsulated within mesoporous silica microspheres （CsPbBr

@MS）. In this approach， ligand-free CsBr dissolved in water diffuses into the oil phase under ultrasonic agitation， where it reacts with oleic acid-coordinated Pb

species preloaded in the silica mesopores， resulting in confined nucleation and encapsulation of CsPbBr

NCs within the silica framework. Optical characterization and stability assessments demonstrate that mesoporous encapsulation substantially enhances both the photoluminescence properties and environmental stability of CsPbBr

@MS. Furthermore， tuning the aqueous CsBr concentration enables optimization of the optical output， yielding a maximum photoluminescence quantum yield（PLQY） of up to 60%. A dense SiO

shell was subsequently formed on the composite surface via TEOS， facilitated by trace water within the mesopores. This secondary passivation layer further improved optical durability， retaining 80% of the initial emission intensity after 60 h of water immersion. Overall， this work presents a green and effective strategy for synthesizing environmentally stable， high-performance perovskite nanomaterials.

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中国科学院长春光学精密机械与物理研究所液晶光学团队

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Ultrasound-driven green synthesis of highly stable CsPbBr3@MS-SiO2 composites in a water-oil biphasic system

DOI：10.37188/CJLCD.2025-0093

摘要

Abstract

关键词

Keywords

references

Ultrasound-driven green synthesis of highly stable CsPbBr₃@MS-SiO₂ composites in a water-oil biphasic system