Rapid determination of volatile organics using a nanoporous zinc oxide microsphere-coated quartz crystal microbalance

Chih Chia Wang, Pei Ying Lin, Chia Jung Lu*, Mao Huang Liu

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

3 引文 斯高帕斯(Scopus)

摘要

The organic vapor sensing properties of nanoporous ZnO microspheres coated on a quartz crystal microbalance were characterized. The ZnO nanoparticles were aggregated by aqueous synthesis into micrometer diameter spheres. The porous structure of the microspheres provided sufficient surface area for vapor adsorption and diffusion for gas exchange. The reversible response suggests that complete desorption without contamination was achieved. Sensing films on a quartz crystal microbalance (QCM) were characterized using five volatile organic compounds with different functional groups to compare the differences in selectivity between polyisobutylene (PIB) and nanoporous ZnO. The response time for nanoporous ZnO was half the value of the PIB-coated sensor. The results show that nanoporous ZnO microspheres are an alternative that provide selectivity and rapid response for QCM.

原文英語
頁(從 - 到)639-649
頁數11
期刊Instrumentation Science and Technology
45
發行號6
DOIs
出版狀態已發佈 - 2017 十一月 2

ASJC Scopus subject areas

  • 化學工程 (全部)
  • 儀器
  • 環境科學 (全部)

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