Preparation of Pt/WO3@ZnO hollow spheres for low-temperature and high-efficiency detection of triethylamine

被引：14

作者：

Dong, Junyi ^{[1
]}

Shao, Junkai ^{[1
]}

Sun, Caixuan ^{[1
]}

Pan, Guofeng ^{[1
]}

Yang, Xueli ^{[1
]}

机构：

[1] Hebei Univ Technol, Hebei Engn Res Ctr Microelect Mat & Devices ERC, Sch Elect & Informat Engn, Tianjin Key Lab Elect Mat & Devices, 5340 Xiping Rd, Tianjin 300401, Peoples R China

来源：

DALTON TRANSACTIONS | 2024年 / 53卷 / 07期

基金：

中国国家自然科学基金;

关键词：

WO3; SURFACE;

D O I：

10.1039/d3dt03493c

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

In this work, hollow spherical Pt-loaded WO3/ZnO heterostructured composites were prepared by a chemical liquid phase synthesis method. The morphology, crystal structure and components of the composites were characterized by SEM, TEM, XRD, XPS, etc. The sensing performance for various gases was also tested. Compared with the pristine WO3 (S = 44@225 degrees C, 50 ppm) gas sensor, the gas sensor that is functionalized with 1 wt% Pt and 0.5 mmol ZnO (1Pt/WZ-2) has a high response of 842-50 ppm at a relatively low temperature of 100 degrees C for TEA, with a quick response/recovery time of 34/120 s, a lower detection limit of 50 ppb, and good selectivity and moisture resistance. This study provides a highly efficient synthesis method of composite materials for TEA gas detection and the sensitivity mechanism is also discussed in detail.

引用

页码：3224 / 3235

页数：12

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