一种基于聚乳酸-碳纳米纤维的导电传感材料和基于纸张的色度传感器用于检测酸盐
Pawankumar Rai1, Srishti Mehrotra1,2, Krishna Gautam3,2
1Food Toxicology Group, CSIR - Indian Institute of Toxicology Research, Vishvigyan Bhawan, 31, Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India. sharma.sandeep@iitr.res.in.
概括
本研究介绍了一种可持续的,可生物降解的聚乳酸和碳纳米纤维膜,用于检测水中的酸盐. 这种环保材料在传感应用中提供了传统塑料的安全替代品.
科学领域:
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
- 分析化学 分析化学
背景情况:
- 塑料废物由于积累和微粒形成,造成了严重的环境和健康风险.
- 可生物降解和生物基材料是传统合成塑料的可持续替代品.
- 需要环保感应材料来监测酸盐等环境污染物.
研究的目的:
- 开发一种可生物降解的膜和一种基于纸张的传感器,作为塑料的可持续替代品.
- 评估开发的环境传感材料的安全性和性能.
- 通过使用新型生物基材料在水样中检测酸盐 (NO3-).
主要方法:
- 聚乳酸和碳纳米纤维 (PLA-CNF) 膜的制造.
- 膜性质的表征,包括表面积,毛孔大小和毛孔体积.
- 根据经合组织指导方针对PLA-CNF膜的安全评估.
- 开发一种基于纸张的色度传感器,用于酸盐检测.
- 使用激活的PLA-CNF膜作为生物基电极用于电化学酸盐检测.
主要成果:
- 该PLA-CNF膜的表面积为3.02 m2 g-1,孔径为18.77 nm,孔径为0.0137 cm3 g-1.
- 根据经合组织的指导方针,该膜被认为对水生和陆生模型是安全的.
- 使用PLA-CNF膜电化学检测酸盐,检测极限为0.046 ppm,灵敏度为1.69 × 10-4 A ppm-1 mm-2.
- 纸质色度传感器显示酸盐的检测极限为156ppm.
结论:
- 开发的PLA-CNF膜和基于纸张的传感器是常规塑料的可行,环保的替代品,用于传感应用.
- 这些材料提供了一种低碳足迹的解决方案,用于检测环境污染物.
- 该研究强调了生物基材料在推进可持续环境监测技术方面的潜力.
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