Electrochemical synthesis of luminescent MoS2 quantum dots

Deepesh Gopalakrishnan; Dijo Damien; Bo Li; Hemtej Gullappalli; Vijayamohanan K. Pillai; Pulickel M. Ajayan; Manikoth M. Shaijumon

doi:10.1039/C4CC09826A

You do not have JavaScript enabled. Please enable JavaScript to access the full features of the site or access our non-JavaScript page.

Electrochemical synthesis of luminescent MoS₂ quantum dots†

Deepesh Gopalakrishnan,‡^a Dijo Damien,‡^a Bo Li,

^b Hemtej Gullappalli,^b Vijayamohanan K. Pillai,^c Pulickel M. Ajayan^b and Manikoth M. Shaijumon*^a

Author affiliations

* Corresponding authors

^a Indian Institute of Science Education and Research Thiruvananthapuram, CET Campus, Sreekaryam, Thiruvananthapuram, Kerala, India
E-mail: shaiju@iisertvm.ac.in

^b Department of Materials Science and Nano Engineering, Rice University, Houston, Texas, USA

^c CSIR-Central Electro Chemical Research Institute, Karaikudi, Karaikudi, Tamilnadu, India

Abstract

Size-controlled synthesis of luminescent quantum dots of MoS₂ (≤2 layers) with narrow size distribution, ranging from 2.5 to 6 nm, from their bulk material using a unique electrochemical etching of bulk MoS₂ is demonstrated. Excitation-dependent photoluminescence emission is observed in the MoS₂ QDs. “As-synthesized” MoS₂ QDs also exhibit excellent electrocatalytic activity towards hydrogen evolution reactions.

This article is part of the themed collection: ChemComm 60th Anniversary Historic Papers from India

Download options Please wait...

Supplementary files

Supplementary information PDF (1592K)

Article information

DOI: https://doi.org/10.1039/C4CC09826A
Article type: Communication
Submitted: 09 Des 2014
Accepted: 20 Jan 2015
First published: 21 Jan 2015

Download Citation

Chem. Commun., 2015,51, 6293-6296

Permissions

Request permissions

Electrochemical synthesis of luminescent MoS₂ quantum dots

D. Gopalakrishnan, D. Damien, B. Li, H. Gullappalli, V. K. Pillai, P. M. Ajayan and M. M. Shaijumon, Chem. Commun., 2015, 51, 6293 DOI: 10.1039/C4CC09826A

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Social activity

Fetching data from CrossRef.
This may take some time to load.

Chemical Communications