Wuhan Textile University, National Local Joint Laboratory for Advanced Textile Processing and Clean Production, Wuhan, 430200, China; The Hong Kong Polytechnic University, School of Fashion and Textiles, Research Center of Textiles for Future Fashion, 999077, Hong Kong, China.
Wuhan Textile University, National Local Joint Laboratory for Advanced Textile Processing and Clean Production, Wuhan, 430200, China.
Biosens Bioelectron. 2025 Jan 1;267:116833. doi: 10.1016/j.bios.2024.116833. Epub 2024 Oct 4.
Colorimetric sensors have applications in gas monitoring due to their simple and quick detection through visible color changes. However, it remains challenging to prepare colorimetric sensors with high sensitivity. Herein, this work fabricated a biomass-based colorimetric sensing yarn with high sensitivity using anthocyanins as the colorimetric dye and wool powder as an effective ammonia (NH) adsorbent. The sensitivity of the prepared yarns was evaluated for detection limit and response time. Surprisingly, the addition of 3% wool powder greatly improved the sensitivity of the prepared yarns, with a reduction of both detection limit and responsive time from 100 ppm to 20 ppm, and 2 min to 20 s, respectively when exposed in 150 ppm NH. The prepared yarns also showed good selectivity and reusability. An example of the practical use of colorimetric yarns was presented. This work provides a facile strategy for fabricating wearable devices for toxic gas monitoring with visual output.
比色传感器由于其通过可见颜色变化进行简单快速检测的特点，在气体监测中有应用。然而，制备具有高灵敏度的比色传感器仍然具有挑战性。本文使用花青素作为比色染料和羊毛粉作为有效的氨（NH）吸附剂，制备了一种基于生物质的高灵敏度比色传感纱线。评估了制备的纱线的灵敏度，以检测限和响应时间为指标。令人惊讶的是，添加 3%的羊毛粉极大地提高了制备的纱线的灵敏度，当暴露于 150ppm NH 时，检测限和响应时间分别从 100ppm 降低到 20ppm，从 2 分钟降低到 20 秒。制备的纱线还表现出良好的选择性和可重复使用性。展示了比色纱线实际应用的一个例子。这项工作为具有视觉输出的有毒气体监测用可穿戴设备的制造提供了一种简便的策略。
