Han Maeum, Kim Jae Keon, Lee Junyeop, An Hee Kyung, Yun Jong Pil, Kang Shin-Won, Jung Daewoong
School of Electronics Engineering, College of IT Engineering, Kyungpook National University, Daegu 41566, Republic of Korea.
AI System Engineering Group, Korea Institute of Industrial Technology (KITECH), Daegu 42994, Republic of Korea.
J Nanosci Nanotechnol. 2020 Jul 1;20(7):4011-4014. doi: 10.1166/jnn.2020.17607.
The proposed study describes the development of a carbon nanotube (CNT)-based gas sensor capable of detecting the presence of hydrogen (H₂) gas at room temperature. CNT yarn used in the proposed sensor was fabricated from synthesized CNT arrays. Subsequently, the yarn was treated by means of a simple one-step procedure, called acid treatment, to facilitate removal of impurities from the yarn surface and forming functional species. To verify the proposed sensor's effectiveness with regard to detection of H₂ gas at room temperature, acid-treated CNT and pure yarns were fabricated and tested under identical conditions. Corresponding results demonstrate that compared to the untreated CNT yarn, the acid-treated CNT yarn exhibits higher sensitivity to the presence of H₂ gas at room temperature. Additionally, the acid-treated CNT yarn was observed to demonstrate excellent selectivity pertaining to H₂ gas.
拟议的研究描述了一种基于碳纳米管（CNT）的气体传感器的开发，该传感器能够在室温下检测氢气（H₂）的存在。拟议传感器中使用的CNT纱线由合成的CNT阵列制成。随后，通过一种简单的一步法（称为酸处理）对纱线进行处理，以促进从纱线表面去除杂质并形成功能物种。为了验证拟议传感器在室温下检测H₂气体的有效性，制备了酸处理的CNT和纯纱线，并在相同条件下进行测试。相应结果表明，与未处理的CNT纱线相比，酸处理的CNT纱线在室温下对H₂气体的存在表现出更高的灵敏度。此外，观察到酸处理的CNT纱线对H₂气体表现出优异的选择性。
