TY - JOUR
T1 - Highly sensitive and selective detection of nitrite by polyaniline linked tetra amino cobalt (II) phthalocyanine surface functionalized ZnO hybrid electrocatalyst
AU - Sudhakara, Sarvajith Malali
AU - Devendrachari, Mruthyunjayachari Chattanahalli
AU - Khan, Fasiulla
AU - Thippeshappa, Sheela
AU - Kotresh, Harish Makri Nimbegondi
N1 - Funding Information:
One of the author Harish M N K acknowledges the DST-SERB-CRG ( CRG/2018/003792 ) project and Vision Group of Science and Technology (GRD No. 591/2017-18/73/327/1 ), Karnataka for research funding. The author Sarvajith M. S. would like to thank the Manipal Academy of Higher Education for the TMA pai fellowship.
Publisher Copyright:
© 2022 Elsevier B.V.
PY - 2023/2
Y1 - 2023/2
N2 - The highly sensitive nanoscale detection of nitrite is one of the major concerns in recent research due to its serious hazardous effects on the environment. The state-of-the-art fabrication of a cost-effective electrochemical nitrite sensor is one of the impetuses of modern research. A polyaniline-linked tetra amino cobalt phthalocyanine surface functionalized ZnO hybrid nanomaterial (PA-TaCoPc@ZnO) for sensitive electrochemical detection of nitrites is presented. Surface functionalization of ZnO nanoparticles with tetra amino cobalt (II) phthalocyanine (TaCoPc) yields TaCoPc-functionalized ZnO nanoparticles (TaCoPc@ZnO) in the first step, followed by the introduction of polyaniline (PANI) via oxidative polymerization in the presence of aniline to yield PA-TaCoPc@ZnO. The fabrication of the sensor was carried out by modifying the glassy carbon electrode with ZnO, TaCoPc@ZnO, tetra amino-substituted phthalocyanine linked by polyaniline (PA-TaCoPc), and PA-TaCoPc@ZnO to evaluate the electrochemical performance. Sensors of PA-TaCoPc@ZnO exhibited superior electrocatalytic activity, selectivity, sensitivity, and a low limit of detection (nanomolar concentration) toward nitrite ions compared to other systems. The remarkable electrocatalytic performance of PA-TaCoPc@ZnO can be attributed to the synergetic effect of the high surface area of nanosized ZnO with conducting polyaniline and metal-centered supramolecular TaCoPc.
AB - The highly sensitive nanoscale detection of nitrite is one of the major concerns in recent research due to its serious hazardous effects on the environment. The state-of-the-art fabrication of a cost-effective electrochemical nitrite sensor is one of the impetuses of modern research. A polyaniline-linked tetra amino cobalt phthalocyanine surface functionalized ZnO hybrid nanomaterial (PA-TaCoPc@ZnO) for sensitive electrochemical detection of nitrites is presented. Surface functionalization of ZnO nanoparticles with tetra amino cobalt (II) phthalocyanine (TaCoPc) yields TaCoPc-functionalized ZnO nanoparticles (TaCoPc@ZnO) in the first step, followed by the introduction of polyaniline (PANI) via oxidative polymerization in the presence of aniline to yield PA-TaCoPc@ZnO. The fabrication of the sensor was carried out by modifying the glassy carbon electrode with ZnO, TaCoPc@ZnO, tetra amino-substituted phthalocyanine linked by polyaniline (PA-TaCoPc), and PA-TaCoPc@ZnO to evaluate the electrochemical performance. Sensors of PA-TaCoPc@ZnO exhibited superior electrocatalytic activity, selectivity, sensitivity, and a low limit of detection (nanomolar concentration) toward nitrite ions compared to other systems. The remarkable electrocatalytic performance of PA-TaCoPc@ZnO can be attributed to the synergetic effect of the high surface area of nanosized ZnO with conducting polyaniline and metal-centered supramolecular TaCoPc.
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U2 - 10.1016/j.surfin.2022.102565
DO - 10.1016/j.surfin.2022.102565
M3 - Article
AN - SCOPUS:85144464720
SN - 2468-0230
VL - 36
JO - Surfaces and Interfaces
JF - Surfaces and Interfaces
M1 - 102565
ER -