Issue 42, 2018

Pyrite FeS2/C nanoparticles as an efficient bi-functional catalyst for overall water splitting

Abstract

Exploration and fabrication of low-cost but highly active electrocatalysts, alternatives to noble metals, have remained a challenge for overall water splitting reaction. To date, few studies have reported that the Earth-abundant pyrite FeS2 is catalytically active for hydrogen evolution reaction, while there is no study on the oxygen evolution reaction and overall water splitting reaction using pyrite FeS2 as an electrocatalyst. Here, we offer a facile hydrothermal approach for the synthesis of FeS2 nanoparticles by the reduction of FeCl3·6H2O with C5H10NS2Na·3H2O. The FeS2/C nanoparticles on Ni foam (NF) deliver 10 mA cm−2 at an overpotential of 240 mV towards the oxygen evolution reaction, which is lower than that of IrO2. It requires 202 mV to drive the hydrogen evolution reaction to reach 10 mA cm−2, while long-term durability and faster charge-transfer kinetics confirm the good hydrogen evolution reaction performance on FeS2/C/Ni foam. Moreover, the pyrite FeS2/C/nanoparticles on Ni foam are assembled as an anode and cathode in a two-electrode alkaline electrolyzer and show good overall water splitting efficiency with 1.72 V at 10 mA cm−2.

Graphical abstract: Pyrite FeS2/C nanoparticles as an efficient bi-functional catalyst for overall water splitting

Supplementary files

Article information

Article type
Paper
Submitted
18 юли 2018
Accepted
13 сеп 2018
First published
14 сеп 2018

Dalton Trans., 2018,47, 14917-14923

Pyrite FeS2/C nanoparticles as an efficient bi-functional catalyst for overall water splitting

Z. Li, M. Xiao, Y. Zhou, D. Zhang, H. Wang, X. Liu, D. Wang and W. Wang, Dalton Trans., 2018, 47, 14917 DOI: 10.1039/C8DT02927J

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.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements