[16p-Z22-1~15] 12.7 医用工学・バイオチップ

▲ [16p-Z22-5] Ultra-sensitive NH₃ Gas Sensor based on Electrospinning SnO₂-CuO nanowires

〇(M2)Chuanlai Zang¹、Chihiro Okutani¹、Yasuo Yano¹、Hiroyasu Yamahara¹、Tomoyuki Yokota¹、Hitoshi Tabata¹ (1.The Univ. of Tokyo)

キーワード：Gas sensor, Metal oxide, Nanowires

Gas sensors play an important role in industrial safety, environmental protection and human health monitoring in recent years. Gas sensors based on one-dimensional (1D) semiconducting metal-oxide (MOX) exhibit inspiring sensitivity, fast response time and low power consumption. Ammonia (NH₃) is one of the most important pollutants or gaseous metabolites of the human body. In this work, NH₃ gas sensing performance based on electrospinning SnO₂-CuO nanowires was studied. The SnO₂-CuO heterojunction nanowires exhibit high sensitivity and quick responds towards ammonia down to 1ppm at room temperature. Furthermore, when the operating temperature increased to 100 ℃, a seven times higher responds was shown compared to the room temperature.