Issue 6, 2018

Facile preparation of NH2-functionalized black phosphorene for the electrocatalytic hydrogen evolution reaction

Abstract

A new facile and green solid exfoliation method using urea-assisted ball milling is reported here to prepare NH2-functionalized few-layer black phosphorus (BP) nanosheets. The thickness of the obtained nanosheets is about 2.15–4.87 nm. The NH2-BP nanosheets exhibit enhanced electrocatalytic hydrogen evolution reaction (HER) performance with an overpotential of 290 mV at −10 mA cm−2, a Tafel slope of 63 mV dec−1 and a turnover frequency of 3.21 s−1 at an overpotential of 290 mV, which drastically surpass those of the bulk BP. This electrocatalytic activity of NH2-BP nanosheets in alkaline electrolyte greatly outperforms that in acidic electrolyte, making it a promising metal-free HER catalyst.

Graphical abstract: Facile preparation of NH2-functionalized black phosphorene for the electrocatalytic hydrogen evolution reaction

Supplementary files

Article information

Article type
Communication
Submitted
12 Dec 2017
Accepted
09 Jan 2018
First published
29 Jan 2018

J. Mater. Chem. A, 2018,6, 2494-2499

Facile preparation of NH2-functionalized black phosphorene for the electrocatalytic hydrogen evolution reaction

L. Shao, H. Sun, L. Miao, X. Chen, M. Han, J. Sun, S. Liu, L. Li, F. Cheng and J. Chen, J. Mater. Chem. A, 2018, 6, 2494 DOI: 10.1039/C7TA10884B

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