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Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production
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Engineering a nanotubular mesoporous cobalt phosphide electrocatalyst by the Kirkendall effect towards highly
1State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China. yuee_miao@dhu.edu.cn txliu@dhu.edu.cn.
Nanoscale
|October 20, 2017
Summary
Mesoporous cobalt phosphide nanotubes (CoP-NTs) were synthesized using electrospinning for enhanced hydrogen evolution reactions (HERs). The optimized CoP-NTs demonstrate superior catalytic activity compared to other cobalt phosphide structures.
Area of Science:
- Materials Science
- Electrochemistry
- Nanotechnology
Background:
- Controlling nano-architecture is key to improving catalytic performance for hydrogen evolution reactions (HERs).
- Metal phosphides are promising non-noble metal electrocatalysts for HERs.
Purpose of the Study:
- To synthesize mesoporous cobalt phosphide nanotubes (CoP-NTs) with controlled morphology for efficient HERs.
- To investigate the role of thermal stabilization in achieving desired nanotube structures.
Main Methods:
- Facile electrospinning technique.
- Thermal stabilization and phosphorization treatments.
- Characterization of synthesized cobalt phosphide nanostructures.
Main Results:
- Successfully synthesized mesoporous CoP-NTs with a 1D hollow tubular architecture.
- Optimized CoP-NTs exhibited a low onset overpotential (53 mV) and Tafel slope (50 mV dec⁻¹).
- CoP-NTs achieved a current density of 10 mA cm⁻² at 152 mV, outperforming control samples.
Conclusions:
- Thermal stabilization is crucial for obtaining desired CoP-NT morphology.
- The developed CoP-NTs are highly efficient electrocatalysts for HERs.
- This work presents a viable strategy for creating advanced non-noble metal phosphide electrocatalysts.
