• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Nanotechnology >Integrating nanohybrid membranes of reduced graphene oxide: chitosan: silica sol gel with fiber optic SPR for caffeine detection
【24h】

Integrating nanohybrid membranes of reduced graphene oxide: chitosan: silica sol gel with fiber optic SPR for caffeine detection

机译：二氧化石墨烯的纳米冬膜 - 壳聚糖：硅胶溶胶用纤维素检测硅胶溶胶

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Caffeine is the most popular psychoactive drug consumed in the world for improving alertness and enhancing wakefulness. However, caffeine consumption beyond limits can result in lot of physiological complications in human beings. In this work, we report a novel detection scheme for caffeine integrating nanohybrid membranes of reduced graphene oxide (rGO) in chitosan modified silica sol gel (rGO: chitosan: silica sol gel) with fiber optic surface plasmon resonance. The chemically synthesized nanohybrid membrane forming the sensing route has been dip coated over silver coated unclad central portion of an optical fiber. The sensor works on the mechanism of modification of dielectric function of sensing layer on exposure to analyte solution which is manifested in terms of red shift in resonance wavelength. The concentration of rGO in polymer network of chitosan and silica sol gel and dipping time of the silver coated probe in the solution of nanohybrid membrane have been optimized to extricate the supreme performance of the sensor. The optimized sensing probe possesses a reasonably good sensitivity and follows an exponentially declining trend within the entire investigating range of caffeine concentration. The sensor boasts of an unparalleled limit of detection value of 1.994 nM and works well in concentration range of 0-500 nM with a response time of 16 s. The impeccable sensor methodology adopted in this work combining fiber optic SPR with nanotechnology furnishes a novel perspective for caffeine determination in commercial foodstuffs and biological fluids.
机译：咖啡因是世界上最受欢迎的精神活性药物，用于改善警觉性并提高清醒。然而，超出限制的咖啡因消费可能导致人类的许多生理并发症。在这项工作中，我们报告了一种新型的咖啡因含有纤维素改性二氧化硅溶胶（RGO：壳聚糖：硅溶胶）的含石墨烯氧化物（RGO）的纳米冬叶膜（RGO）的新型检测方案，具有光纤表面等离子体共振。形成传感途径的化学合成的纳米组织膜已经浸涂在光纤的银涂覆的未覆盖中央部分上。该传感器适用于在暴露于分析物溶液中的感测层的介电学函数的改变机制，其在共振波长的红色变换方面表现出。壳聚糖和硅溶胶聚合物网络中RGO浓度已得到了优化了纳米混合物溶液中银涂覆探针的浸渍时间，以提取传感器的最高性能。优化的传感探针具有相当良好的敏感性，并在整个调查范围内具有相当良好的敏感性，并在整个调查范围内呈指数下降趋势。该传感器具有无与伦比的检测值限制为1.994nm，在0-500nm的浓度范围内工作，响应时间为16 s。本作作品中采用的无可挑剔的传感器方法，将光纤SPR与纳米技术提供了一种新颖的商业食品和生物液中的咖啡因测定视角。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号