Highly selective acetone sensor based on ternary Au/Fe2O3-ZnO synthesized via co-precipitation and microwave irradiation |
| |
Authors: | Yan LI Li-li CHEN Fang-xian ZHAO |
| |
Affiliation: | College of Science, Civil Aviation University of China, Tianjin 300300, China |
| |
Abstract: | Ternary Au/Fe2O3-ZnO gas-sensing materials were synthesized by combining co-precipitation and microwave irradiation process. The as-prepared Au/Fe2O3-ZnO was characterized with X-ray diffractometer and scanning electron microscope, and its gas-sensing performance was measured using a gas-sensor analysis system. The results show that the as-prepared products consist of hexagonal wurtzite ZnO, face-centered cubic gold nanoparticles and orthorhombic Fe2O3 crystallines. The Au/Fe2O3-ZnO based sensor has a very high selectivity to ethanol and acetone, and also has high sensitivity (154) at a low working temperature (270 °C) and an extremely fast response (1 s) against acetone. It is found that the selectivity can be adjusted by Fe2O3 content added in the ternary materials. It possesses a worth looking forward prospect to practical applications in acetone detecting and administrating field. |
| |
Keywords: | zinc oxide ferric oxide gold acetone sensor ethanol sensor |
本文献已被 ScienceDirect 等数据库收录! |