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Related Concept Videos

Properties of Organometallic Compounds01:23

Properties of Organometallic Compounds

Organometallic compounds are compounds that contain a carbon–metal bond. Carbon belongs to an organyl group like alkyl, aryl, allyl, or benzyl groups. The metal can be from Group I or Group II of the periodic table, a transition metal, or a semimetal.
Heterogeneous Catalysis01:22

Heterogeneous Catalysis

Heterogeneous catalysis involves a catalyst in a different phase from the reactants. It is a process where the catalyst and the reactants are in distinct phases, typically solid and gas or liquid.Most heterogeneous catalysts are metals, metal oxides, or acids. The list includes transition metals like iron (Fe), cobalt (Co), nickel (Ni), palladium (Pd), platinum (Pt), chromium (Cr), manganese (Mn), tungsten (W), silver (Ag), and copper (Cu). These metals possess partially vacant d orbitals that...

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Correction: Jiang et al. Methods for Obtaining One Single Larmor Frequency, Either <i>v</i><sub>1</sub> or <i>v</i><sub>2</sub>, in the Coherent Spin Dynamics of Colloidal Quantum Dots. <i>Nanomaterials</i> 2023, <i>13</i>, 2006.

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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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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

Metal-N-Heterocyclic Carbene Porous Organic Polymers as Efficient Bifunctional Water-Splitting Electrocatalysts.

Shasha Ma1, Zhaobin Ye1, Guang Shi2

  • 1MOE Laboratory of Polymeric Composite and Functional Materials, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China.

Nanomaterials (Basel, Switzerland)
|June 25, 2026
PubMed
Summary
This summary is machine-generated.

This study introduces novel bifunctional electrocatalysts made from porous organic polymers (POPs) for water electrolysis. The palladium-based catalyst (Pd-NHC/NF) shows high efficiency and stability for both hydrogen and oxygen evolution reactions.

Keywords:
bifunctional catalystsmetal–N-heterocyclic carbeneporous organic polymerswater-splitting

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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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Area of Science:

  • Materials Science
  • Electrochemistry
  • Catalysis

Background:

  • Bifunctional electrocatalysts are crucial for efficient water electrolysis.
  • Porous organic polymers (POPs) offer tunable structures for catalytic applications.

Purpose of the Study:

  • To synthesize and evaluate metal-N-heterocyclic carbene-based POPs as bifunctional electrocatalysts.
  • To investigate the catalytic activity and stability of these materials for hydrogen and oxygen evolution reactions.

Main Methods:

  • Synthesis of imidazolium borate ionic POPs.
  • Immobilization of POPs onto nickel foam (NF) to create Pd-NHC/NF, Ag-NHC/NF, and Cu-NHC/NF.
  • Electrochemical characterization including overpotential and Tafel slope measurements.
  • Assembly and testing of a water-splitting electrolyzer.

Main Results:

  • Pd-NHC/NF demonstrated high activity for both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER).
  • Specific performance metrics for Pd-NHC/NF: OER overpotential of 245 mV, HER overpotential of 139 mV at 10 mA cm⁻².
  • The Pd-NHC/NF||Pd-NHC/NF electrolyzer achieved 1.55 V at 10 mA cm⁻² and showed stability over 90 hours.

Conclusions:

  • Pd-NHC/NF is a highly effective bifunctional electrocatalyst for water splitting.
  • POPs provide a promising platform for designing advanced electrocatalysts.