[16p-Z22-1~15] 12.7 Biomedical Engineering and Biochips

▲ [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)

Keywords: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.