三元Au/Fe2O3-ZnO基高选择性丙酮气敏材料的共沉淀和微波辐照法合成
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| Published in | 中国有色金属学报：英文版 Vol. 28; no. 1; pp. 137 - 144 |
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| Main Author | |
| Format | Journal Article |
| Language | English |
| Published |
2018
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| Subjects | |
| Online Access | Get full text |
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| Bibliography: | 43-1239/TG zinc oxide; ferric oxide; gold; acetone sensor; ethanol sensor 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 Fe2O3crystallines.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(1s)against acetone.It is found that the selectivity can be adjusted by Fe2O3content added in the ternary materials.It possesses a worth looking forward prospect to practical applications in acetone detecting and administrating field. |
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| ISSN: | 1003-6326 |