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AuthorJlassi K.
AuthorSliem M.H.
AuthorEid K.
AuthorKrupa I.
AuthorChehimi M.M.
AuthorAbdullah A.M.
Available date2020-04-09T07:35:00Z
Publication Date2019
Publication NameSensors (Switzerland)
ResourceScopus
ISSN14248220
URIhttp://dx.doi.org/10.3390/s19204442
URIhttp://hdl.handle.net/10576/13915
AbstractPrecise designs of low-cost and efficient catalysts for the detection of hydrogen peroxide (H2O2) over wide ranges of pH are important in various environmental applications. Herein, a versatile and ecofriendly approach is presented for the rational design of ternary bentonite-silylpropyl-polypyrrole/silver nanoarchitectures (denoted as BP-PS-PPy/Ag) via the in-situ photo polymerization of pyrrole with salinized bentonite (BP-PS) in the presence of silver nitrate. The Pyrrolyl-functionalized silane (PS) is used as a coupling agent for tailoring the formation of highly exfoliated BP-PS-PPy sheet-like nanostructures ornamented with monodispersed Ag nanoparticles (NPs). Taking advantage of the combination between the unique physicochemical properties of BP-PS-PPy and the outstanding catalytic merits of Ag nanoparticles (NPs), the as-synthesized BP-PS-PPy/Ag shows a superior electrocatalytic reduction and high-detection activity towards H2O2 under different pH conditions (from 3 to 10). Intriguingly, the UV-light irradiation significantly enhances the electroreduction activity of H2O2 substantially, compared with the dark conditions, due to the high photoelectric response properties of Ag NPs. Moreover, BP-PS-PPy/Ag achived a quick current response with a detection limit at 1 μM within only 1 s. Our present approach is green, facile, scalable and renewable
Languageen
PublisherMDPI AG
SubjectBentonite clay
H2 O2 detection
Pyrrole
Silver nanoparticles
TitleNovel enzyme-free multifunctional bentonite/polypyrrole/silver nanocomposite sensor for hydrogen peroxide detection over a wide pH range
TypeArticle
Issue Number20
Volume Number19
dc.accessType Open Access


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