Oh Hyun Ju, Yeang Byeong Jin, Park Young Ki, Choi Hyun Jung, Kim Jong H, Kang Young Sik, Bae Younghwan, Kim Jung Yeon, Lim Seung Ju, Lee Woosung, Hahm Wan-Gyu
Advanced Textile R&D Department, Korea Institute of Industrial Technology, Ansan 15588, Korea.
Test-Bed Research Center, Korea Dyeing & Finishing Technology Institute (DYETEC), Daegu 41706, Korea.
Polymers (Basel). 2020 Jul 16;12(7):1585. doi: 10.3390/polym12071585.
The colorimetric sensor is a facile, cost-effective, and non-power-operated green energy material for gas detection. In this study, the colorimetric sensing property of a meta-aramid/dye 3 nanofiber sensor for ammonia (NH) gas detection was investigated. This colorimetric sensor was prepared using various dye 3 concentrations via electrospinning. Morphological, thermal, structural, and mechanical analyses of the sensor were carried out by field-emission scanning electron microscopy, thermogravimetric analysis, Fourier-transform infrared spectroscopy, and a universal testing machine, respectively. A homemade computer color matching machine connected with a gas flow device characterized the response of the meta-aramid/dye 3 nanofiber colorimetric sensor to various exposure levels of NH gas. From the results, we confirmed that this colorimetric green energy sensor could detect ammonia gas in the concentration of 1-10 ppm with a sensing response time of 10 s at room temperature. After washing with laundry detergent for 30 min, the colorimetric sensors still exhibited sensing property and reversibility.
比色传感器是一种用于气体检测的简便、经济高效且无需动力驱动的绿色能源材料。在本研究中，研究了间位芳纶/染料3纳米纤维传感器对氨气（NH₃）检测的比色传感特性。该比色传感器通过静电纺丝使用不同浓度的染料3制备而成。分别用场发射扫描电子显微镜、热重分析、傅里叶变换红外光谱和万能试验机对传感器进行了形态、热、结构和力学分析。一台与气体流动装置相连的自制计算机颜色匹配机表征了间位芳纶/染料3纳米纤维比色传感器对不同暴露水平氨气的响应。从结果来看，我们证实了这种比色绿色能源传感器在室温下能够检测浓度为1 - 10 ppm的氨气，传感响应时间为10秒。在用洗衣液洗涤30分钟后，比色传感器仍表现出传感特性和可逆性。
