Research Article

|

2021, 14(5): 1443–1449

|

https://doi.org/10.1007/s12274-020-3200-3

Highly selective electrocatalytic Cl oxidation reaction by oxygenmodified cobalt nanoparticles immobilized carbon nanofibers for coupling with brine water remediation and H2 production

Qizhong Xiong1, Xian Zhang2 (✉), Qipeng Cheng1, Guoqiang Liu3, Gang Xu1, Junli Li1, Xinxin Ye1 (✉), and Hongjian Gao1 

View Author's information

1 Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
2 Key Laboratory of Materials Physics, Centre for Environmental and Energy Nanomaterials, Anhui Key Laboratory of Nanomaterials and Nanotechnology, CAS Center for Excellence in Nanoscience, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, China
3 School of Materials Science and Engineering, Hefei University of Technology, Hefei 230009, China

Keywords: carbon nanofibers, oxygen-modified cobalt nanoparticles, brine water, Cl− oxidation reaction, electrocatalytic H2 production
Full article PDF
Cite this article(Endnote)
Share this article
Metric

views: 228

Citations: 0

  • Abstract
  • References
  • Electronic Supplementary Material
Combining the H2 production with brine remediation is regarded as a sustainable approach to achieving clean H2 energy. However, designing stable Cl oxidation reaction (COR) electrocatalyst is the key to realize this route. Herein, a type of oxygen-modified Co nanoparticles anchored graphitic carbon nanofibers catalyst (Co/GCFs) was synthesized through a two-step strategy of adsorption and pyrolysis. The Co/GCFs-2.4 exhibits high selectivity and stability for COR at neutral electrolyte. It is worth noting that unlike the water oxidation, the chemical valence of cobalt has not changed during the COR. Further results demonstrated that the oxygenmodified Co nanoparticles provide active sites for selective COR, meanwhile, the graphitic carbon gives rise to strong catalytic stability. Thanks to the superior COR and H2 production activity of Co/GCFs-2.4, a two-electrode brine electrocatalysis system employing Co/GCFs-2.4 as both cathode and anode for H2 production exhibited robust stability, efficient and high Faraday efficiency (98%–100%). We propose that this work provides a novel strategy for designing efficient and stable catalysts with electrocatalytic COR and HER activities at neutral brine water for practically coupling with H2 production by water electrolysis and brine water remediation.
Related Article
Cite this article

Highly selective electrocatalytic Cl oxidation reaction by oxygenmodified cobalt nanoparticles immobilized carbon nanofibers for coupling with brine water remediation and H2 production. Nano Res. 2021, 14(5): 1443–1449 https://doi.org/10.1007/s12274-020-3200-3

Download citation