Facilitated transport of ethylene across polymer membranes containing silver salt: Effect of HBF4 on the photoreduction of silver ions

Jong Hak Kim, Byoung Ryul Min, Hoon Sik Kim, Jongok Won, Yong Soo Kang

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Silver salts dissolved in amide group containing polymer such as poly(2-ethyl-2-oxazoline) (POZ) are labile to reduce to silver metals under UV-Vis light or heat. Since the reduction of silver ions to silver nanoparticles can change the separation performance of facilitated olefin transport through polymer membranes containing silver salt, it is attempted to prohibit the reduction of silver ion. It is found that the trace of water present in silver-polymer complex membranes participates in the reduction reaction and H+ ions are generated in a reversible reaction of the reduction process. In this respect, tetrafluoroboric acid (HBF4) was introduced as a proton donator to suppress the reduction of silver ion. The effects of HBF4 on the photoreduction derived by UV irradiation were characterized by mixed gas transport of ethylene/ethane, UV-Vis spectroscopy, scanning electron microscopy (SEM).

Original languageEnglish
Pages (from-to)283-288
Number of pages6
JournalJournal of Membrane Science
Issue number1-2
Publication statusPublished - 2003 Feb 15


All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Materials Science(all)
  • Physical and Theoretical Chemistry
  • Filtration and Separation

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