Low-temperature chemical solution route for ZnO based sulfide coaxial nanocables: general synthesis and gas sensor application

被引：28

作者：

Du, Ning ^{[1
]}

Zhang, Hui ^{[1
]}

Chen, Bingdi ^{[1
]}

Wu, Jianbo ^{[1
]}

Yang, Deren ^{[1
]}

机构：

[1] Zhejiang Univ, State Key Lab Silicon Mat, Hangzhou 310027, Peoples R China

来源：

NANOTECHNOLOGY | 2007年 / 18卷 / 11期

关键词：

D O I：

10.1088/0957-4484/18/11/115619

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A novel chemical solution approach has been developed to synthesize ZnO based sulfide coaxial nanocables such as ZnO/ZnS and ZnO/CdS by chemical reaction in tetrahydrofuran (THF; C4H8O), in which sulfur, NaBH4 and ZnCl2 or CdCl2 were used as reactants and ZnO nanorods were used as the template at room temperature. The morphology and structure of ZnO/ZnS and ZnO/ CdS coaxial nanocables have been characterized by transmission electron microscopy (TEM), field emission scanning electron microscopy (FESEM), x-ray powder diffraction (XRD), x-ray photoelectron spectroscopy (XPS) and Brunauer-Emmett-Teller (BET) analysis. Furthermore, the as-prepared ZnO/ CdS coaxial nanocables have been applied as NH3 gas sensors at room temperature with superior sensitivity, good reproducibility and a short response/recovery time. Finally, a first explanation for the improved performance of the ZnO/CdS coaxial nanocable based gas sensors has been presented.

引用

页数：6

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