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Hydrogen peroxide sensing properties of PVA/TiO 2 /I 2 nanocomposite‐based free standing membranes
Author(s) -
Grover Rakhi,
Nanda Omita,
Gupta Nidhi,
Saxena Kanchan
Publication year - 2015
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.42257
Subject(s) - nanocomposite , membrane , materials science , hydrogen peroxide , polyvinyl alcohol , vinyl alcohol , chemical engineering , photoluminescence , polymer chemistry , composite material , chemistry , polymer , organic chemistry , biochemistry , engineering , optoelectronics
The nanocomposite of titanium‐di‐oxide (TiO 2 )/iodine (I 2 ) in polyvinyl alcohol (PVA) matrix has been explored to be used in hydrogen peroxide (H 2 O 2 ) sensing applications for the first time. The proposed nanocomposite can be easily casted in the form of thin film on glass substrates as well as free standing membranes. These nanocomposite films and membranes exhibit reduced resistance values and easily observable colour changes in the presence of H 2 O 2 . The films also exhibit significant quenching in photoluminescence emission properties upon H 2 O 2 exposure. These sensor responses have been attributed to redox reactions at nanocomposite films and H 2 O 2 interface. This study indicates an easy to fabricate, flexible and environmental friendly sensing platform for H 2 O 2 . © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132 , 42257.