Facile synthesis of nitrogen, sulfur co-doped carbon quantum dots for selective detection of mercury (II)
Artikel i vetenskaplig tidskrift, 2024

Developing carbon quantum dots with high throughput and quantum yields is important to boost their application in environmental detection. This study proposes nitrogen, sulfur co-doped carbon quantum dots as a fluorescent probe for mercury detection in an aqueous environment, which was synthesized by a facile and high-output tactic using methyl orange as a precursor for the first time. Results demonstrate that the obtained carbon quantum dots have a high selectivity, low detection limit of 237 nM, and fast response time, approximately 30 s, for trace mercury. The detection mechanism involves the synergistic action of static quenching, inner filter effect, and photo-induced electron transfer. Moreover, results show a high product yield (75.6%) and quantum yield (29.4%), which are higher compared to previous studies. These findings indicate that developed carbon quantum dots are promising sensing nanomaterials for mercury detection.

Sensing mechanism

High efficiency synthesis

Carbon quantum dot

Metal ion detection

Författare

Haitao Ren

Shaanxi University of Technology

Abdelkader Labidi

Shaanxi University of Technology

Jinhua Sun

Chalmers, Industri- och materialvetenskap, Material och tillverkning

Ahmed A. Allam

Faculty of Sciences

Jamaan S. Ajarem

King Saud University College of Science

Mostafa R. Abukhadra

Faculty of Sciences

Chuanyi Wang

Shaanxi University of Technology

Environmental Chemistry Letters

1610-3653 (ISSN) 16103661 (eISSN)

Vol. 22 1 35-41

Ämneskategorier

Fysik

Kemi

DOI

10.1007/s10311-023-01660-9

Mer information

Senast uppdaterat

2024-03-07