ItemArticle

Nitrogen doped carbon quantum dots@?-Fe2O3/PANI nanocomposite based electrochemical sensor for cadmium ion detection

Title
Nitrogen doped carbon quantum dots@?-Fe2O3/PANI nanocomposite based electrochemical sensor for cadmium ion detection
Creator
Abinaya, S.; Girija, S.; Baby, Anjana; Banu, A. Aseema; Jose, Sujin P.
Description
Cadmium (Cd2+) ions pose significant risks due to their toxic effects even at low concentrations. By integrating nitrogen-doped carbon quantum dots (N-CQDs) with ?-Fe2O3 and polyaniline (PANI), we have engineered a nanocomposite that demonstrates a remarkably high sensitivity and selectivity in detecting Cd2+ ions. The NCQDs@?-Fe2O3/PANI nanocomposite was prepared by using hydrothermal and in-situ polymerization methods. The characterization techniques for an eco-friendly polymer nanocomposite confirm the interactions between N-CQDs, ?-Fe2O3, and PANI. X-ray diffraction analysis shows the nanocomposite possesses a crystal size of 24 0.03 nm. Field-emission scanning electron microscope and high-resolution transmission electron microscope images showed that the spherical N-CQDs are enclosed by irregular ?-Fe2O3 nanoparticles, which are dispersed on the PANI sheets. Further, the particle size distribution analysis indicates an average size of 5.8 nm for the N-CQDs. The electrochemical sensing result suggests that the nanocomposite is effective in sensing the Cd2+ ions with a detection limit of 750 nm. 2025
Source
Inorganic Chemistry Communications;Volume;179;Issue;;Article No.;114846;
Date
01-01-2025
Publisher
Elsevier B.V.
Subject
Cadmium-ion; Carbon quantum dots; Electrochemical sensor; Heavy metal-ion detection; Hydrothermal
Coverage
Abinaya S., Advanced Materials Laboratory, School of Physics, Madurai Kamaraj University, Tamil Nadu, Madurai, 625021, India; Girija S., Department of Bioelectronics and Biosensors, Alagappa University, Tamil Nadu, Karaikudi, 630003, India; Baby A., Department of Chemistry, CHRIST (Deemed-to-be-University), Karnataka, Bengaluru, 560029, India; Banu A.A., Advanced Materials Laboratory, School of Physics, Madurai Kamaraj University, Tamil Nadu, Madurai, 625021, India; Jose S.P., Advanced Materials Laboratory, School of Physics, Madurai Kamaraj University, Tamil Nadu, Madurai, 625021, India
Rights
Restricted Access; Hardcopy may be available in the library
Relation
ISSN: 13877003; CODEN: ICCOF
Format
online
Language
English
Type
Article

Citation

Abinaya, S.; Girija, S.; Baby, Anjana; Banu, A. Aseema; Jose, Sujin P., “Nitrogen doped carbon quantum dots@?-Fe2O3/PANI nanocomposite based electrochemical sensor for cadmium ion detection,” CHRIST (Deemed To Be University) Institutional Repository, accessed June 18, 2026, https://archives.christuniversity.in/items/show/22314.

Output Formats