Citation: Hui Zhang, Haichao Wang, Jijie Zhang, Da-Shuai Zhang, Mei-Hui Yu, Ze Chang, Xian-He Bu. Enhanced methanol sensing performance of Pt@SnO₂-ZnO core-shell structure derived from Sn/Zn-ZIF-8 framework[J]. Chinese Chemical Letters, ;2026, 37(8): 111180. doi: 10.1016/j.cclet.2025.111180 shu

Enhanced methanol sensing performance of Pt@SnO₂-ZnO core-shell structure derived from Sn/Zn-ZIF-8 framework

Hui Zhang ^a ,
Haichao Wang ^a ,
Jijie Zhang ^b ,
Da-Shuai Zhang ^c ,
Mei-Hui Yu ^{a, *,} ,
Ze Chang ^{a, *,} ,
Xian-He Bu ^{a, b}

a.
School of Materials Science and Engineering, Nankai University, Tianjin 300350, China
b.
State Key Laboratory of Elemento-Organic Chemistry, Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin 300071, China
c.
College of Chemistry and Chemical Engineering, Dezhou University, Dezhou 253023, China

mh@nankai.edu.cn

changze@nankai.edu.cn

Received Date: 17 December 2024
Revised Date: 28 March 2025
Accepted Date: 3 April 2025
Available Online: 3 April 2025

Figures(6)

Decorating semiconductor metal oxides (SMOs) with noble metals particles has been proved to be effective method to enhance their gas-sensing performance. However, the issue of noble metal particles aggregation might affect the sensitivity and stability of the material. Herein, a strategy is proposed for the construction of noble metals particles decorated SMOs featuring optimized gas sensing performance through the derivation of metal-organic frameworks (MOFs). By utilizing Sn/Zn-ZIF-8 framework as precursor to encapsulate Pt nanoparticles (NPs) followed by calcination, a core-shell structure of SnO₂-ZnO encapsulated with Pt NPs (Pt@SnO₂-ZnO) was successfully constructed. The Sn/Zn-ZIF-8 framework structure prevents the aggregation of Pt NPs, which facilitates the adsorption and dissociation of oxygen and methanol molecules. Thereby the Pt@SnO₂-ZnO based gas sensor exhibited significantly enhanced response (73.6) towards 10 ppm methanol at 320 ℃ and exceptionally low theoretical detection limit (0.18 ppb), providing an effective approach for the modification of SMOs-based gas-sensing materials.
- Sn/Zn-ZIF-8,
- Metal-organic framework,
- Pt nanoparticles,
- Core-shell structure,
- Methanol sensor
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通讯作者: 陈斌, bchen63@163.com

Enhanced methanol sensing performance of Pt@SnO₂-ZnO core-shell structure derived from Sn/Zn-ZIF-8 framework