%0 Journal Article
%A Gautam, Vineeta
%A P. Singh, Karan
%A Yadav, Vijay L.
%D 2017
%T Multicomponent Template EffectsPreparation
of Highly Porous Polyaniline Nanorods Using Crude Lemon Juice and
Its Application for Selective Detection of Catechol
%U https://acs.figshare.com/articles/journal_contribution/Multicomponent_Template_Effects_Preparation_of_Highly_Porous_Polyaniline_Nanorods_Using_Crude_Lemon_Juice_and_Its_Application_for_Selective_Detection_of_Catechol/5785839
%R 10.1021/acssuschemeng.7b03705.s001
%2 https://acs.figshare.com/ndownloader/files/10210368
%K p K
%K 5 μ M
%K PANI-Lemon-modified carbon paste electrode
%K redox center
%K polyaniline samples
%K electrocatalytic detection
%K acid
%K Lemon juice
%K morphology
%K protonating condition
%K synthesis
%K matrix molecules
%K catechol
%K paper deals
%K Porous Polyaniline Nanorods
%K Selective Detection
%K template-like effects
%K polymer
%K eco-friendly concept
%K nm
%K spectroscopic analysis
%K Crude Lemon Juice
%K multicomponent template effects
%X This paper deals
with the preparation and characterization of three
different polyaniline samples, namely, PANI-HCl (synthesis in inorganic
acid), PANI-Citric acid (synthesis in organic acid), and PANI-Lemon
(synthesis in crude lemon juice–biological-derived acidic solution).
PANI-Lemon is a low-density polymer with well-defined nanorod shape
morphology (∼100 nm in diameter and ∼300–600
nm in length). Lemon juice manipulates the morphology of PANI because
it has a lower pKa and the matrix molecules
produce template-like effects. The distinct structure of PANI-Lemon
was confirmed from microscopic and spectroscopic analysis. In the
same protonating condition, the alignment of chains is the dominating
factor which governs the conductivity of polyaniline. PANI-Lemon was
successfully applied for the electrocatalytic detection of catechol.
The selective interaction of PANI-Lemon with catechol leads to the
generation of a new redox center. PANI-Lemon-modified carbon paste
electrode exhibited high sensitivity (49.68 μA μM–1 cm–2), specificity, a wide linear
range (from 5 μM to 100 mM), a low detection limit (2.1 μM),
and less response time (2 s). On the basis of our results, we propose
an eco-friendly concept "multicomponent template effects"
to bring
nanoscale morphological manipulation using a suitable natural extract.
This concept could be equally implemented to synthetic polymers and
other nanoparticles.
%I ACS Publications