Zhao Yang, Zhang Jijun, Wang Yan, Chen Zexiang
School of Optoelectronic Science And Engineering, University of Electronic Science and Technology of China, North Jianshe Road 4, Chengdu, 610054, China.
Nanoscale Res Lett. 2020 Feb 14;15(1):40. doi: 10.1186/s11671-020-3265-7.
Gas sensors based on tin dioxide-carbon nanotube composite films were fabricated by a simple inexpensive sol-gel spin-coating method using PEG400 as a solvent. Nanostructured copper was coated on CNTs/SnO film, and then copper was transformed into copper oxide at 250 °C. Resistivity of the final composite films is highly sensitive to the presence of HS, which became easily attached or detached at room temperature. The response and recovery time of the sensor are 4 min and 10 min, and the value of sensitivity is 4.41, respectively. Meanwhile, the CNTs/SnO/CuO sensor also has low detection limit, high selectivity toward HS, and stable performance with different concentrations of HS.
基于二氧化锡-碳纳米管复合薄膜的气体传感器通过一种简单且廉价的溶胶-凝胶旋涂法制备，该方法使用聚乙二醇400作为溶剂。在碳纳米管/二氧化锡薄膜上涂覆纳米结构的铜，然后在250°C下将铜转化为氧化铜。最终复合薄膜的电阻率对硫化氢的存在高度敏感，硫化氢在室温下易于附着或脱离。该传感器的响应时间和恢复时间分别为4分钟和10分钟，灵敏度值为4.41。同时，碳纳米管/二氧化锡/氧化铜传感器还具有低检测限、对硫化氢的高选择性以及在不同硫化氢浓度下的稳定性能。
