Issue 20, 2015

One-step hydrothermal synthesis of monolayer MoS2 quantum dots for highly efficient electrocatalytic hydrogen evolution

Abstract

Designing MoS2 nanocatalysts with ultrasmall size and few layers is an effective strategy to enhance their electrocatalytic activity in the hydrogen evolution reaction (HER). In this work, uniform MoS2 quantum dots (QDs) are synthesized by a novel and facile hydrothermal route. Transmission electron microscopy and atomic force microscopy measurements show that the resulting products possess a monolayer thickness with an average size of about 3.6 nm. Benefiting from the abundance of exposed catalytic edge sites, as well as the excellent intrinsic conductivity of the monolayer structure, the MoS2 QDs showed excellent catalytic activity with a low overpotential of approximately 160 mV and a small Tafel slope of 59 mV dec−1, which made it a promising HER electrocatalyst for practical applications.

Graphical abstract: One-step hydrothermal synthesis of monolayer MoS2 quantum dots for highly efficient electrocatalytic hydrogen evolution

Supplementary files

Article information

Article type
Communication
Submitted
26 mar 2015
Accepted
16 apr 2015
First published
20 apr 2015

J. Mater. Chem. A, 2015,3, 10693-10697

One-step hydrothermal synthesis of monolayer MoS2 quantum dots for highly efficient electrocatalytic hydrogen evolution

X. Ren, L. Pang, Y. Zhang, X. Ren, H. Fan and S. (. Liu, J. Mater. Chem. A, 2015, 3, 10693 DOI: 10.1039/C5TA02198G

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