Synthesis and remarkable gas sensing performance of biomorphic tubular porous SnO2 templated from sorghum straw

被引：12
|
作者：
Lin, Bizhou [1 ]
Lin, Shanshan [1 ]
Liu, Yan [1 ]
Luo, Jinjin [1 ]
Gao, Bifen [1 ]
Zhang, Jingxin [1 ]
机构：
[1] Huaqiao Univ, Coll Mat Sci & Engn, Dept Appl Chem, Xiamen 361021, Peoples R China
来源：
MICROPOROUS AND MESOPOROUS MATERIALS | 2018年 / 266卷
关键词：
SnO2; Hierarchical pore structure; Pt; Gas sensors; Hydrogen; Biotemplate; REDUCED GRAPHENE OXIDE; DOPED SNO2; THIN-FILM; FACILE FABRICATION; MICROSPHERES; SENSORS;
D O I：
10.1016/j.micromeso.2018.03.016
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Biomorphic porous SnO2 was hydrothermally synthesized at 160 degrees C and post-calcined at 550 degrees C using sorghum straw as biotemplate. The as-obtained tubular porous SnO2 inherited the hierarchical microstructure of sorghum straw with a specific surface area of 28.6 m(2).g(-1) and exhibits remarkable gas sensing performance. After surface modified by Pt nanoparticles, biomorphic SnO2 shows excellent low-temperature hydrogen sensing characteristics with a high sensitivity of 18.2 for 200 ppm hydrogen at 50 degrees C, a short response time of 7 s and excellent selectivity, as a result of the synergism of the unique porous structure of biomorphic SnO2 and the catalytic activity of the loaded Pt nanoparticles.
引用
收藏
页码：283 / 288
页数：6
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