Boron and Sulfur-Codoped g-C 3 N 4 Nanostructures and Their l -Cysteine-Functionalized Quantum Dots for Selective Detection of Triethylamine Gas and Hg 2+ /Pb 2+ Ions
Abstract
A facile way of synthesizing boron and sulfur-doped g-C 3 N 4 (BSCN) 2D nanostructures along with their l -cysteine-modified quantum dots (Cys-BSCN QDs) has been reported in this study. BSCN nanosheets have been incorporated in a Cu-based portable interdigitated electrode (IDE) to explore the sensing performance toward triethylamine (TEA) gas at room temperature. The effects of humidity levels have also been investigated. The fabricated sensor enabled highly selective TEA sensing with a low detection limit (LOD) of ∼0.17 ppm, along with fast response and recovery times of 62 and 60 s, respectively. The BSCN-based sensor markedly outperforms the pristine carbon nitride and its boron or sulfur-doped forms. Long-term stability tests demonstrate sensing performance sustained toward 10 ppm TEA with
Fields of Study & Subjects
Carbon and Quantum Dots Applications
Molecular Sensors and Ion Detection
Gas Sensing Nanomaterials and Sensors
Publication details
- Journal / source
- ACS Applied Nano Materials
- Publisher
- American Chemical Society (ACS)
- Volume
- 9
- Issue
- 14
- Pages
- 6130–6144
- Publication date
- 16 March 2026
- Language
- EN