Pd-loaded SnO2 ultrathin nanorod-assembled hollow microspheres with the significant improvement for toluene detection

被引:45
|
作者
Zhang, Kan [1 ]
Yang, Xin [1 ]
Wang, Yanzhe [1 ]
Bing, Yifei [1 ]
Qiao, Liang [2 ,3 ]
Liang, Zhongzhu [4 ]
Yu, Shansheng [1 ]
Zeng, Yi [1 ]
Zheng, Weitao [1 ]
机构
[1] Jilin Univ, Coll Mat Sci & Engn, State Key Lab Automot Simulat & Control, Changchun 130012, Peoples R China
[2] Changchun Univ, Coll Sci, Changchun 130022, Peoples R China
[3] Changchun Univ, Key Lab Mat Design & Quantum Simulat, Changchun 130022, Peoples R China
[4] Chinese Acad Sci, Changchun Inst Opt Fine Mech & Phys, State Key Lab Appl Opt, Changchun 130033, Peoples R China
基金
高等学校博士学科点专项科研基金;
关键词
SnO2; Hollow nanostructures; Pd loading; Toluene; Gas sensor; GAS-SENSING PROPERTIES; THIN-FILMS; ZNO NANOSTRUCTURES; SENSORS; NANOWIRES; MICROSTRUCTURE; NANOPARTICLES; FABRICATION; NANOFIBERS; CATALYST;
D O I
10.1016/j.snb.2016.11.153
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
Pd-loaded SnO2 hollow microspheres have been successfully prepared via a facile one-pot hydrothermal route and subsequent Pd-loaded treatment without involving any templates, surfactants, or capping agents. The morphological and structural characterization confirms that Pd-loaded SnO2 hollow micro spheres are hierarchically constructed of numerous well-aligned rodlike SnO2 subunits with ultrathin diameter of about 5-10 nm and monodisperse Pd particles with several nanometers in size. The time dependent investigation demonstrates that the formation of hierarchical SnO2 hollow spheres is driven by Ostwald-ripening mechanism. Furthermore, gas sensors based on pure and Pd-loaded SnO2 have been fabricated. The Pd-loaded SnO2 hollow microspheres exhibit relatively lower operating temperature, higher response and selectivity to toluene in comparison with that of pure SnO2. Besides structural merits of ultrathin nanorod-assembled hollow and porous structure, the promotion of sensing performances can also be attributed to the contribution of catalytic Pd particles. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码:465 / 474
页数:10
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