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- Title
Synthesis of VO2 thin films from vanadium powder and determination of room-temperature NH3 sensing properties.
- Authors
Hien, Vu Xuan; Thang, Tran Manh; Dong, Vu Thanh; Nhat, Dang Duc; Nghi, Nguyen Thanh; Phuoc, Luong Huu; Khoa, Cao Tien; Vuong, Dang Duc; Chien, Nguyen Duc
- Abstract
VO2 nanomaterials were synthesized directly from vanadium powder and NH4OH solution. The effect of annealing temperature on the formation of VO2 and V2O5 phases of materials after synthesis was investigated and analyzed. The material is composed of nanoparticles with an average size of about 2 nm. The gas sensing properties of VO2 samples at room temperature were studied. The VO2 nanomaterial was selective toward NH3 at 25 °C among other test gases such as C2H5OH, CH3COCH3, and C3H8. The effects of moisture, stability, and gas-sensing mechanism of VO2 nanomaterials were also investigated and discussed. VO2 nanomaterials have simple fabrication and superior air sensitivity and thus have great potential as NH3 sensors at room temperature.
- Subjects
THIN films; VANADIUM; OXYGEN consumption; POWDERS; NANOPARTICLE size; SURFACE plasmon resonance
- Publication
Journal of Materials Science: Materials in Electronics, 2021, Vol 32, Issue 10, p13803
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-021-05956-w