期刊
MICRO & NANO LETTERS
卷 7, 期 9, 页码 943-946出版社
INST ENGINEERING TECHNOLOGY-IET
DOI: 10.1049/mnl.2012.0631
关键词
-
资金
- Henan Fundamental and Frontier Technology Program, China [082300420200]
Mesoporous hierarchical alpha-Fe2O3 was prepared by a simple soakage process and followed by calcination, using eggshell membrane (ESM) as a biotemplate. The hierarchical architectures composed of interconnected hollow nanotubes replicated from ESM and showed a large surface area (45.57 m(2) g(-1)). A possible formation mechanism of the hierarchical alpha-Fe2O3 was proposed. Benefiting from the mesoporous hierarchical structures and high surface area, the ESM-morphic alpha-Fe2O3 sensor exhibits enhanced gas-sensing performance. The results demonstrated that the sensor showed the highest selectivity and sensitivity to acetic acid among the tested gases, and rapid response and recovery times (18 and 4 s to 50 ppm of acetic acid).
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