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Related Concept Videos

Heterogeneous Catalysis01:22

Heterogeneous Catalysis

55
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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Catalysis02:50

Catalysis

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The presence of a catalyst affects the rate of a chemical reaction. A catalyst is a substance that can increase the reaction rate without being consumed during the process. A basic comprehension of a catalysts’ role during chemical reactions can be understood from the concept of reaction mechanisms and energy diagrams.
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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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Fe-Doped CoP Nanoarray: A Monolithic Multifunctional Catalyst for Highly Efficient Hydrogen Generation.

Chun Tang1, Rong Zhang1, Wenbo Lu1

  • 1College of Chemistry, Sichuan University, Chengdu, 610064, Sichuan, China.

Advanced Materials (Deerfield Beach, Fla.)
|November 1, 2016
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Summary
This summary is machine-generated.

A new iron-doped cobalt phosphide nanoarray acts as a highly active catalyst for both water splitting and sodium borohydride hydrolysis, producing hydrogen efficiently for energy applications.

Keywords:
CoP nanoarraysFe dopinghydrogen economymonolithic catalystsmultifunction

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Catalysis

Background:

  • Developing efficient catalysts for hydrogen evolution is crucial for renewable energy technologies.
  • Existing catalysts often face challenges with stability, activity, or cost.
  • Multifunctional catalysts that can perform multiple reactions are highly desirable.

Purpose of the Study:

  • To synthesize and characterize a novel Fe-doped CoP nanoarray.
  • To evaluate its performance as a catalyst for electrolytic hydrogen evolution.
  • To assess its efficacy in catalyzing sodium borohydride (NaBH4) hydrolysis for hydrogen generation.

Main Methods:

  • Fabrication of a 3D monolithic Fe-doped CoP nanoarray.
  • Electrochemical testing for hydrogen evolution reaction (HER) in a two-electrode electrolyzer setup.
  • Kinetic studies and activation energy determination for NaBH4 hydrolysis.

Main Results:

  • The Fe-doped CoP nanoarray demonstrated high activity for electrolytic hydrogen evolution, requiring only 1.60 V for a 10 mA cm⁻² current density.
  • Excellent catalytic performance was observed for NaBH4 hydrolysis, with a low activation energy of approximately 39.6 kJ mol⁻¹.
  • A high hydrogen generation rate of 6.06 L min⁻¹ g⁻¹ was achieved for NaBH4 hydrolysis.

Conclusions:

  • The Fe-doped CoP nanoarray is a robust and multifunctional catalyst for hydrogen production.
  • Its high activity in both water splitting and NaBH4 hydrolysis offers a promising pathway for efficient hydrogen generation.
  • This catalyst design presents a viable solution for electrochemical and hydrolytic hydrogen evolution applications.