NDLI: Fluorescent nanofibrous membranes for trace detection of TNT vapor

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Fluorescent nanofibrous membranes for trace detection of TNT vapor

Content Provider	Semantic Scholar
Author	Tao, Shengyang Li, Guangtao Yin, Jinxiang
Copyright Year	2006
Abstract	Electrospinning is a simple and cost-effective approach for the production of nanofibers and assemblies with controllable structures. In this work, based on sol–gel chemistry and the electrospinning technique, porphyrin-doped nanocomposite fibers with a form of nanofibrous membrane were successfully fabricated without the addition or help of polymers, and were demonstrated as novel fluorescence-based chemosensors for the rapid detection of trace vapor (10 ppb) of explosive. Due to a larger surface area and good gas permeability, these fluorescent nanofibrous membranes exhibit remarkable sensitivity to trace TNT vapor compared to tightly cross-linked silica films, but their sensitivity is strongly dependent upon the morphology and phase aggregation of the used nanofibers. Reducing the diameter and introducing a pore structure into nanofibers can considerably enhance the sensitivity of the resulting materials. The performed experiments suggest that the hierarchically structured, porphyrin-doped nanofibrous membranes are potentially very useful chemosensory materials for detecting trace explosives.
File Format	PDF HTM / HTML
Language	English
Access Restriction	Open
Subject Keyword	Diameter (qualifier value) Doping (semiconductor) Experiment Explosive Agents Fluorescence Large Mathematical morphology Nanocomposite Nanofibers Polymer Polymers Porphyrins RIVA TNT Sensor Sol-gel Tissue fiber Tissue membrane Trinitrotoluene vapor
Content Type	Text
Resource Type	Article

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