A dual functional conductive hydrogel containing titania@polypyrrole-cyclodextrin hybrid nanotubes for capture and degradation of toxic chemical

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Title
A dual functional conductive hydrogel containing titania@polypyrrole-cyclodextrin hybrid nanotubes for capture and degradation of toxic chemical
Author(s)
J Bae; Seon Joo Park; D S Shin; Jiyeon Lee; S Park; H J Kim; Oh Seok Kwon
Bibliographic Citation
Biochip Journal, vol. 15, no. 2, pp. 162-170
Publication Year
2021
Abstract
In this study, dual functional conductive hydrogels containing polypyrrole (PPy) nanotubes (NTs) functionalized with beta-cyclodextrin (bCD) and titania (TiO2) were produced and applied for both detection and removal of toxic substances. PPy, a representative conducting polymer was prepared in a form of nanotube (NT) and used for providing electrical conductivity. TiO2 nanoparticles were incorporated into the inside of the PPy NTs during the formation of PPy NTs, acting as a photocatalyst. Subsequently, beta-cyclodextrin (bCD) molecules were introduced as sensing media on the surface of PPy NTs via a simple surface treatment. The resulting TiO2@PPy-bCD hybrid NTs were embedded into agarose matrix to obtain a conductive hydrogel, simultaneously improving compatibility with substrates. The electrical properties of the hydrogel were investigated, showing electrical conductivity of approximately 10?3 S/cm and ohmic I-V relation on Au electrode. The sensing capability for a model analyte compound (methyl paraben, MPRB) down to 10 nM and photocatalytic degradation of methylene blue (MB) were demonstrated effectively. This study can provide important information for upcoming research activities for environmentally benign and toxic free versatile chemical sensors in diverse relevant fields.
Keyword
HydrogelPolypyrroleTitaniaChemical sensorPhotocatalyst
ISSN
1976-0280
Publisher
Springer
DOI
http://dx.doi.org/10.1007/s13206-021-00015-2
Type
Article
Appears in Collections:
Division of Research on National Challenges > Infectious Disease Research Center > 1. Journal Articles
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