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Proceedings of the 7th National Conference on Functional Materials and Applications (FMA 2010 E-BOOK)

Changsha,China,10.16-10.18,2010

ISBN: 978-1-935068-41-9 Scientific Research Publishing, USA

E-Book 2313pp Pub. Date: October 2010

Category: Chemistry & Materials Science

Price: $360

Title: Synthesis and Gas-sensing Properties of α-Fe2O3 Hollow Microspheres
Source: Proceedings of the 7th National Conference on Functional Materials and Applications (FMA 2010 E-BOOK) (pp 855-859)
Author(s): Xia-lei Ye, Institute of Sensor Technology, Gansu Academy of Science, Lanzhou, China, 730000
Yu-zhe Song, Institute of Sensor Technology, Gansu Academy of Science, Lanzhou, China, 730000
Bin Liu, Institute of Sensor Technology, Gansu Academy of Science, Lanzhou, China, 730000
Shu-mei Lin, Institute of Sensor Technology, Gansu Academy of Science, Lanzhou, China, 730000
Yun-fu Wang, Institute of Sensor Technology, Gansu Academy of Science, Lanzhou, China, 730000
Gen-liang Han, Institute of Sensor Technology, Gansu Academy of Science, Lanzhou, China, 730000
Gong-nong Li, Institute of Sensor Technology, Gansu Academy of Science, Lanzhou, China, 730000
Guo-han Liu, Institute of Sensor Technology, Gansu Academy of Science, Lanzhou, China, 730000
Abstract: α-Fe2O3 hollow microspheres were successfully prepared by a hydrothermal approach using sucrose as morphology controlled agent, urea as precipitant and followed by calcination at 500°C for 4 h. The structure of α-Fe2O3 hollow microspheres was studied by XRD, SEM. The results show that the products were pure α-Fe2O3 with a hexagonal structure. And the microspheres with a diameter of 1-3μm were assembled by α-Fe2O3 nanoparticles (40-100nm), the surface of α-Fe2O3 hollow microspheres densified with the increasing of sucrose concentration. Above all, the gas sensing properties of the sensors based on the α-Fe2O3 hollow microspheres were investigated.
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