Hwang Sung-Ho, Kim Young Kwang, Hong Seong Hui, Lim Sang Kyoo
Smart Textile Convergence Research Group, Daegu Gyeongbuk Institute of Science & Technology (DGIST), Daegu 42988, Korea.
Sensors (Basel). 2019 Jul 17;19(14):3151. doi: 10.3390/s19143151.
For the fast and easy detection of carbon monoxide (CO) gas, it was necessary to develop a CO gas sensor to operate in low temperatures. Herein, a novel Cu/CuO-decorated ZnO hollow nanofiber was prepared with the electrospinning, calcination, and photodeposition methods. In the presence of 100 ppm CO gas, the Cu/CuO-photodeposited ZnO hollow nanofiber (Cu/CuO@ZnO HNF) showed twice higher sensitivity than that of pure ZnO nanofiber at a relatively low working temperature of 300 °C. The hollow structure and p-n junction between Cu/CuO and ZnO would be considered to contribute to the enhancement of sensitivity to CO gas at 300 °C due to the improved specific surface area and efficient electron transfer.
为了快速简便地检测一氧化碳（CO）气体，有必要开发一种能在低温下工作的CO气体传感器。在此，采用静电纺丝、煅烧和光沉积方法制备了一种新型的Cu/CuO修饰的ZnO中空纳米纤维。在存在100 ppm CO气体的情况下，Cu/CuO光沉积的ZnO中空纳米纤维（Cu/CuO@ZnO HNF）在300°C的相对较低工作温度下，其灵敏度比纯ZnO纳米纤维高出两倍。由于比表面积的提高和有效的电子转移，Cu/CuO与ZnO之间的中空结构和p-n结被认为有助于提高在300°C下对CO气体的灵敏度。
