CAJ | 학술논문

利用水热法，在没有表面活性剂和有机溶剂的情况下，在一定pH值下合成In(OH)3微米立方。通过在400℃煅烧In(OH)3前驱体，制备In2O3微米立方。所制备的In2O3保持In(OH)3微米立方的结构和形貌，但在煅烧中，由于脱水， In2O3微米立方有轻微的变形。采用X射线衍射仪、扫描电镜和热重分析对所制备样品的相成分、形貌和热性能进行表征。在最佳工作温度275℃下，评估In2O3微米立方对H2、CO、CH4、C2H5OH和CO2的气敏性能。测试结果表明， In2O3微米立方对C2H5OH有良好的气敏性能。最后，对In2O3微米立方的敏感机理进行讨论，可知In2O3微米立方除了作为气敏材料，也可用于微电子和光电子器件材料。
이용수열법，재몰유표면활성제화유궤용제적정황하，재일정pH치하합성In(OH)3미미립방。통과재400℃단소In(OH)3전구체，제비In2O3미미립방。소제비적In2O3보지In(OH)3미미립방적결구화형모，단재단소중，유우탈수， In2O3미미립방유경미적변형。채용X사선연사의、소묘전경화열중분석대소제비양품적상성분、형모화열성능진행표정。재최가공작온도275℃하，평고In2O3미미립방대H2、CO、CH4、C2H5OH화CO2적기민성능。측시결과표명， In2O3미미립방대C2H5OH유량호적기민성능。최후，대In2O3미미립방적민감궤리진행토론，가지In2O3미미립방제료작위기민재료，야가용우미전자화광전자기건재료。
In(OH)3 microcubes were synthesized with a hydrothermal process at a certain pH value without any surfactant and organic agents.By annealing as-prepared In(OH)3 precursors at 400 ℃ in air,we obtained In2 O3 microcube that inherited the morphologies of their precursors.The resulting In2 O3 still slightly distorted due to the dehydration process of In(OH)3 .The phase compositions,morphologies and thermal properties of the syn-thesized samples were characterized by powder X-ray diffraction,scanning electron microscopy and thermo-gravimetric analysis.The gas sensing performance of In2 O3 microcubes toward H2 ,CO,CH4 ,C2 H5OH,CO2 was evaluated at optimal working temperature of 275 ℃.The results revealed that the In2 O3 nanocubes exhibi-ted excellent gas-sensing properties for C2 H5OH.The sensing mechanism of the In2 O3 microcube sensors was discussed.These uniform microcubes may also be useful in microelectronic and optoelectronic devices.