Open AccessSodium alginate assisted construction of ZnSnO 3 microspheres enhanced HCHO sensing performance under UV illumination at room temperature
Author(s) -
Chen Jie,
Ying Zhihua,
Zheng Peng,
Gao Rongfa,
Mei Jinbang
Publication year - 2019
Publication title -
micro and nano letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.25
H-Index - 31
ISSN - 1750-0443
DOI - 10.1049/mnl.2019.0207
Subject(s) - microsphere , sodium alginate , materials science , chemical engineering , sodium , composite material , nanotechnology , metallurgy , engineering
The ZnSnO 3 microspheres were fabricated with water‐soluble biopolymer sodium alginate (SA) as a crystal growth modifier under hydrothermal conditions. The gas‐sensing properties of ZnSnO 3 @SA were tested under the illumination of UV light at room temperature. The results showed that the ZnSnO 3 @SA sensor exhibited better HCHO gas response than pristine ZnSnO 3 sensor, which was ascribed to the introduction of SA that changed the size distribution of the microspheres. Test results of HCHO gas with different concentrations indicated that the ZnSnO 3 @SA sensor had a good linearity. This approach would provide a potential route for the HCHO sensor to work at room temperature. In addition, the sensing mechanism was also discussed.