Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, People's Republic of China.
ACS Nano. 2011 Sep 27;5(9):6955-61. doi: 10.1021/nn201433r. Epub 2011 Aug 23.
We develop graphene-based devices fabricated by alternating current dielectrophoresis (ac-DEP) for highly sensitive nitric oxide (NO) gas detection. The novel device comprises the sensitive channels of palladium-decorated reduced graphene oxide (Pd-RGO) and the electrodes covered with chemical vapor deposition (CVD)-grown graphene. The highly sensitive, recoverable, and reliable detection of NO gas ranging from 2 to 420 ppb with response time of several hundred seconds has been achieved at room temperature. The facile and scalable route for high performance suggests a promising application of graphene devices toward the human exhaled NO and environmental pollutant detections.
我们开发了基于石墨烯的器件，该器件通过交流介电泳（ac-DEP）制造，用于高灵敏度的一氧化氮（NO）气体检测。该新型器件包括钯修饰的还原氧化石墨烯（Pd-RGO）的敏感通道和化学气相沉积（CVD）生长石墨烯覆盖的电极。在室温下，实现了对 2 至 420 ppb 范围内的 NO 气体的高灵敏度、可恢复和可靠检测，响应时间为数秒。这种简单且可扩展的高性能方法为石墨烯器件在人类呼出的 NO 和环境污染物检测方面的应用提供了广阔的前景。
