期刊
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
卷 209, 期 -, 页码 37-44出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.mseb.2015.10.009
关键词
SnO2-graphene composite; H-2 sensing; Hydrothermal; Low operating temperature
资金
- National Natural Science Fund [51302319]
- Specialized Research Fund for the Doctoral Program of Higher Education [20110133120010]
- Fundamental Research Funds for the Central Universities [14CX02003A]
The flower-like SnO2 and a series of SnO2-graphene (S-G) composites have been synthesized through a simple one-pot hydrothermal method. The as-prepared products were characterized by XRD, FESEM, TEM, BET, XPS, and Raman spectroscopy. The results clearly revealed that the three-dimensional flower-like SnO2 hierarchical structure was destroyed by graphene nanosheets. The possible growth models for flower-like SnO2 and S-G composites were proposed based on the microstructure characterizations. Furthermore, the H-2 sensing responses of all samples were investigated at low operating temperatures (OT) between 30 and 180 degrees C. The results indicate that the S-G-2-based sensor exhibits the excellent H2 sensing response of 87.2 at a relatively low OT of 150 degrees C, which is about 70 times higher than that of pure SnO2. Mechanism of H-2 sensing of S-G composite has been discussed in terms of resistance change, which is influenced by the Schottky barrier at the interface of S-G composites. (C) 2015 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据