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Updated: Dec 30, 2025
Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production
Published on: December 6, 2021
Strong hydrophilicity NiS2/Fe7S8 heterojunctions encapsulated in N-doped carbon nanotubes for enhanced oxygen
Jing-Yu Wang1, Wen-Ting Liu2, Xiao-Peng Li3
1School of Chemistry and Chemical Engineering/Institute of Clean Energy and Materials/Guangzhou Key Laboratory for Clean Energy and Materials, Guangzhou University, Guangzhou Higher Education Mega Center, No. 230 Wai Huan Xi Road, 510006, P. R. China. lzqgzu@gzhu.edu.cn and Chemistry Department, Guangdong University of Education, Guangzhou 510303, P. R. China.
Abstract:
The construction of active sites with excellent water oxidation activity is of great significance in the design of OER electrocatalysts. Herein, we propose an anion regulation strategy, in which N-doped carbon nanotubes play a protective role by coating the Ni3Fe alloy particles and two non-metallic elements S and Se are introduced to adjust the electronic structure, this can further help construct a heterogeneous surface, improve the valence state, and increase the hydrophilicity of the catalysts. The two as-prepared catalysts N-CNTs@NiS2/Fe7S8 (overpotential of 330 mV to achieve 50 mA cm-2 and Tafel slope of 51.49 mV dec-1) and N-CNTs@NiSe2/Fe3Se4 (360 mV and 72.32 mV dec-1, respectively) exhibited considerably high OER activity in 1.0 M KOH solutions.
