WS2 quantum dots harvesting via sonication assisted liquid exfoliation for the electrochemical sensing of xanthine

WS2 quantum dots (WS2 QDs) were prepared by sonication assisted liquid exfoliation in dimethyl formamide (DMF) and dimethyl sulfoxide (DMSO). The as-prepared WS2 QDs were characterized by spectroscopic techniques such as UV-visible, photoluminescence and Raman spectroscopy. Further, the crystallinit...

Full description

Saved in:
Bibliographic Details
Published inNew journal of chemistry Vol. 46; no. 35; pp. 17066 - 17072
Main Authors Sakthivel, Arunkumar, Chandrasekaran, Anitha, Soosaimanickam, Charlin, Chen-Zhong, Li, Subbiah Alwarappan
Format Journal Article
LanguageEnglish
Published Cambridge Royal Society of Chemistry 12.09.2022
Subjects
Dimethyl sulfoxide
Dimethylformamide
Electrochemical analysis
Exfoliation
Photoluminescence
Quantum dots
Raman spectroscopy
Tungsten disulfide
Online AccessGet full text

Cover

More Information
Summary:WS2 quantum dots (WS2 QDs) were prepared by sonication assisted liquid exfoliation in dimethyl formamide (DMF) and dimethyl sulfoxide (DMSO). The as-prepared WS2 QDs were characterized by spectroscopic techniques such as UV-visible, photoluminescence and Raman spectroscopy. Further, the crystallinity was identified by XRD and the surface morphology by HR-TEM. WS2 QDs were then utilized as a platform for the electrochemical detection of xanthine and it exhibited a limit of detection and sensitivity of 0.118 μM (S/N = 3) and 7.872 μA cm−2 μM−1, respectively. Further, the proposed sensor was found to be linear in the 1–100 μM range. Hence, it is evident that WS2 QDs can be employed as an electrochemical platform for various sensing and bio-sensing applications.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 14
ISSN:1144-0546
1369-9261
DOI:10.1039/d2nj03446h