CAJ | 학술논문

新型复合材料Zn_2SnO_4具有良好的气敏性,文献鲜有报道Zn_2SnO_4材料的制备以及氧化物掺杂改性;因此采用液相共沉淀法制备了Zn_2SnO_4粉体材料,利用X射线衍射仪(XRD)对合成的材料的结构进行了表征;通过固相反应制备了MnO_2,Li_2O掺杂的Zn_2SnO_4粉体,对旁热式气敏元件的性能进行了测试.实验发现Zn_2SnO_4是一种性能优良的酒敏材料,氧化物掺杂剂MnO_2和Li_2O的加入明显提高了材料对乙醇气体的灵敏度和选择性,质量百分含量为0.5%的Li_2O的掺杂量可以使元件对于体积分数为50×10~(-6)的乙醇气体灵敏度达到150.
신형복합재료Zn_2SnO_4구유량호적기민성,문헌선유보도Zn_2SnO_4재료적제비이급양화물참잡개성;인차채용액상공침정법제비료Zn_2SnO_4분체재료,이용X사선연사의(XRD)대합성적재료적결구진행료표정;통과고상반응제비료MnO_2,Li_2O참잡적Zn_2SnO_4분체,대방열식기민원건적성능진행료측시.실험발현Zn_2SnO_4시일충성능우량적주민재료,양화물참잡제MnO_2화Li_2O적가입명현제고료재료대을순기체적령민도화선택성,질량백분함량위0.5%적Li_2O적참잡량가이사원건대우체적분수위50×10~(-6)적을순기체령민도체도150.
As a new composite oxide material Zn_2SnO_4 shows a good gas-sensing property. However, there were a few literatures about the preparation of Zn_2SnO_4 and research of the doped Zn_2SnO_4. In this work, Zn_2SnO_4 powder material was prepared by coprecipitation . To study the structure of the materials X-ray diffraction (XRD) were characterized; using solid-state reaction the MnO_2, Li_2O doped Zn_2SnO_4 were prepared. The properties of the gas sensors with the tube type structure were tested using Static gas. It was found Zn_2SnO_4 is an excellent ethanol sensitive material, the addition of oxide Li_2O and MnO_2 improved gas sensitivity and selectivity to ethanol gas, the percentage content of 0.5wt% Li_2O doping can enhance the sensitivity to ethanol gas, The sensitivity to ethanol gas with volume fraction of 50×10~(-6) is 150.