Details

Autor(en) / Beteiligte

• Zhang, Hengchao
• Li, Yarou
• Zhang, Yupan
• Wu, Junfeng
• Hu, Jiandong
• Li, Shixin
• Li, Lanlan

Titel

Simultaneous detection of lead and cadmium based on N-doped MoS.sub.2/MWCNTs nanocomposites

Ist Teil von

• Journal of materials science, 2023-04, Vol.58 (15), p.6643

Ort / Verlag

Springer

Erscheinungsjahr

2023

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Heavy metal pollution in the environment has posed a serious threat to human health and ecosystems. Therefore, it is urgent to develop a fast and effective sensing method for detecting heavy metal ions (HMIs). A simple and rapid ultrasonic mixing method was used to prepare nanocomposites consisting of cysteine, multi-walled carbon nanotubes, and nitrogen-doped molybdenum disulfide (L-Cys/MWCNTs/N-MoS.sub.2). Fully combining the excellent features of 2D materials and carbon nanomaterials, the nanocomposites have been successfully used as sensor interface materials for the simultaneous detection of lead ions (Pb.sup.2+) and cadmium ions (Cd.sup.2+). The L-Cys/MWCNTs/N-MoS.sub.2@GCE sensor has a wide linear range for the detection of Pb.sup.2+ and Cd.sup.2+, with the detection limits as low as 0.67 nM and 5.3 nM, respectively. In addition, the sensor performs well in stability, reproducibility, and anti-interference performance. The L-Cys/MWCNTs/N-MoS.sub.2@GCE sensor can also be used for the detection of Pb.sup.2+ and Cd.sup.2+ in tap water and lake water with good recovery (> 90%), which may provide a promising strategy for the simultaneous in situ and sensitive detection of heavy metal ions in the aqueous environment.