Electrospun zinc oxide nanospheres for ultrasensitive room-temperature gas sensors

• 来源期刊: 光电子快报（英文版）
• 年，卷（期）: 2018,（4）
• 页码范围: 245-247
• 页数: 3页
• 语种: 英文
• DOI: 10.1007/s11801-018-8015-z

摘要

Zinc oxide (ZnO) nanospheres with excellent sensing ability towards formaldehyde were successfully synthesized using a single-capillary electrospirming method.Structural and electrical characteristics of the as-synthesized ZnO nanospheres were systematically investigated.The scanning electron microscope (SEM) images clearly display a novel structure of ZnO with pores distributed on the surface of the nanospheres.The results demonstrate that the ZnO nanospheres possess excellent formaldehyde gas-sensing properties.At room temperature,the response of ZnO nanospheres to formaldehyde with concentration of 100 ppm is determined to be 126.3.In addition,the ZnO nanosphere sensors exhibit short response time of 30 s and short recovery time of 2 s.These excellent gas-sensing properties make the ZnO nanospheres a promising material for the application in environmental monitoring devices.