Electrospun nanofibrous membranes coated quartz crystal microbalance as gas sensor for NH3 detection

Bin Ding, Jinho Kim, Yasuo Miyazaki, Seimei Shiratori

Research output: Contribution to journalArticle

211 Citations (Scopus)

Abstract

A novel gas sensor composed of electrospun nanofibrous membranes and quartz crystal microbalance (QCM) was successfully fabricated. The electrospun nanofibers with diameter of 100-400nm can be deposited on the surface of QCM by electrospinning the homogenous blend solutions of cross-linkable poly(acrylic acid) (PAA) and poly(vinyl alcohol) (PVA). A series of nanofibrous membranes with various weight percentage of PAA to PVA were fabricated and characterized regarding their morphology and sensitivity to NH3. Sensing experiments were examined by measuring the resonance frequency shifts of QCM which due to the additional mass loading. The results showed that the sensing properties were mainly affected by the content of PAA component in nanofibrous membranes, concentration of NH3, and relative humidity. Additionally, the sensitivity of nanofibrous membranes coated (NMC) QCM sensor was much higher than that of continuous films coated QCM sensor.

Original languageEnglish
Pages (from-to)373-380
Number of pages8
JournalSensors and Actuators, B: Chemical
Volume101
Issue number3
DOIs
Publication statusPublished - 2004 Jul 15

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Keywords

  • Electrospinning
  • Gas sensor
  • Nanofibrous membranes
  • Quartz crystal microbalance (QCM)
  • Resonance frequency shift

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry

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