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| Effect of Sm doping amount on the properties of SnO2 nanostructures |
| MENG Ling-long1, LI Qiang2 |
| 1Department of metallurgy and industrial design, Chifeng vocational and technical college, Chifeng 024000, China，2Shanxi wanli technology co., LTD.,Taiyuan 030024, China |
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Abstract In this paper, SnO2 nanostructures were prepared by hydrothermal method, doped by Sm, and the structure and gas-sensitive properties of the materials were tested. The results show that SnO2 with good crystal structure is formed in the sample before and after Sm doping. Rare earth Sm has obvious inhibition effect on the growth of nanorods. Sm2Sn2O7 structure is formed in the crystal structure of the product doped with 4% and 6% Sm, and the size of nanorods becomes smaller when doped with 6% Sm. With the increase of the atomic fraction of doped Sm, the sensitivity of component for testing isopropanol increases continuously.The aging of SnO2 in air results in the decrease of SnO2 resistance, which shows excellent gas-sensitive characteristics.
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Received: 18 July 2018
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2020, Vol. 30 
