| Autor: |
Nga, Phan Thi To, My, Dinh Thi Tra, Duc, Nguyen Minh, Kien, Pham Trung, Nhan, Phan Chi, Tu, Nguyen Cong, Huyen, Pham Thanh |
| Zdroj: |
Vietnam Journal of Chemistry; October 2021, Vol. 59 Issue: 5 p676-683, 8p |
| Abstrakt: |
Porous spherical LaFeO3(PS‐LFO) sample was prepared using a simple hydrothermal method and found to be a potential gas sensor for NH3detection. Structural characteristic of the sample was examined by several techniques, including X‐ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). XRD investigation confirmed the formation of porous spherical LaFeO3with a perovskite phase. TEM and SEM results revealed the porous structure of the material. The presence of functional groups was confirmed using Fourier transform infrared spectroscopy (FT‐IR). Orthorhombic porous spherical LaFeO3calcined at 700 oC was employed as a gas sensor for detection of ammonia gas. The results revealed that PS‐LFO‐based sensor showed p‐type gas sensing behavior with good sensitivity, rapid response, and sub‐ppm detection limit to ammonia gas at 325 oC. |
| Databáze: |
Supplemental Index |
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