Volume 8, Issue 1 1900995
Full Paper

Transforming Ni-Coagulated Polyferriertic Sulfate Sludge into Porous Heteroatom-Doped Carbon-Supported Transition Metal Phosphide: An Efficient Catalyst for Oxygen Evolution Reaction

Ge Li

Ge Li

The Key Labaoratory of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, School of Environment and Energy, South China University of Technology, Guangzhou, 510006 P. R. China

Search for more papers by this author
Tonghe Zhu

Tonghe Zhu

The Key Labaoratory of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, School of Environment and Energy, South China University of Technology, Guangzhou, 510006 P. R. China

Search for more papers by this author
Yali Ye

Yali Ye

The Key Labaoratory of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, School of Environment and Energy, South China University of Technology, Guangzhou, 510006 P. R. China

Search for more papers by this author
Sheng Liang

Sheng Liang

The Key Labaoratory of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, School of Environment and Energy, South China University of Technology, Guangzhou, 510006 P. R. China

Search for more papers by this author
Weijian Duan

Weijian Duan

The Key Labaoratory of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, School of Environment and Energy, South China University of Technology, Guangzhou, 510006 P. R. China

Search for more papers by this author
Wei Hong

Wei Hong

Guangdong Shunde Institute of Environmental Science, Foshan, 528000 P. R. China

Search for more papers by this author
Chunhua Feng

Corresponding Author

Chunhua Feng

The Key Labaoratory of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, School of Environment and Energy, South China University of Technology, Guangzhou, 510006 P. R. China

Search for more papers by this author
First published: 09 October 2019
Citations: 9

Abstract

The transformation of sludge waste from wastewater treatment plants into functional materials is an attractive prospect. Herein, the successful synthesis of mesoporous heteroatom-doped carbon-supported NiFe phosphide (FeNi2P@HDC) from Ni-coagulated iron sludge by forming a biogenic precursor via incubation of the sludge with Shewanella oneidensis MR-1, followed by a simple pyrolysis process, is reported. The incubation results in the formation of a solid chemical bonding between bacteria and the surface of the newly formed mineral, which is beneficial for producing a desirable microstructure and chemical composition. The as-synthesized FeNi2P@HDC shows a superior oxygen evolution reaction (OER) performance, evident from the data, including a low overpotential of 280 mV to reach a current density of 10 mA cm−2 and a small Tafel slope of 56 mV dec−1 under alkaline conditions, which is comparable with that of the majority of the reported Ni and/or Fe phosphide catalysts in the literature and better than the state-of-the-art RuO2 catalyst. Such a good performance seems to be the result of the synergistic effect of the intrinsic activity of FeNi2P nanoparticles and the strong interaction between FeNi2P and heteroatom-doped graphene-like carbon support.

Conflict of Interest

The authors declare no conflict of interest.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.