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Related Concept Videos

Formation of Complex Ions03:45

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A type of Lewis acid-base chemistry involves the formation of a complex ion (or a coordination complex) comprising a central atom, typically a transition metal cation, surrounded by ions or molecules called ligands. These ligands can be neutral molecules like H2O or NH3, or ions such as CN− or OH−. Often, the ligands act as Lewis bases, donating a pair of electrons to the central atom. These types of Lewis acid-base reactions are examples of a broad subdiscipline called coordination...
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Synthesis of Platinum-nickel Nanowires and Optimization for Oxygen Reduction Performance
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A dramatic platform for oxygen reduction reaction based on silver nanoclusters.

Xuan Yang1, Linfeng Gan, Chengzhou Zhu

  • 1State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, Jilin, P. R. China. ekwang@ciac.jl.cn jin.d.wang@gmail.com.

Chemical Communications (Cambridge, England)
|November 15, 2013
PubMed
Summary
This summary is machine-generated.

Researchers developed a high-yield method for creating tiny silver nanoclusters (2-5 atoms). These silver nanoclusters show promise as effective catalysts for the oxygen reduction reaction (ORR), particularly in alkaline fuel cells.

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Area of Science:

  • Nanomaterials Science
  • Catalysis
  • Electrochemistry

Background:

  • Oxygen reduction reaction (ORR) is crucial for energy conversion devices.
  • Development of efficient and cost-effective ORR catalysts is essential.
  • Silver-based catalysts are being explored as alternatives to precious metals.

Purpose of the Study:

  • To develop a high-yield synthesis strategy for very small silver nanoclusters (Ag NCs).
  • To evaluate the catalytic performance of these Ag NCs for the oxygen reduction reaction (ORR).
  • To assess the potential of Ag NCs in alkaline fuel cell applications.

Main Methods:

  • Synthesis of silver nanoclusters (2-5 silver atoms) using conventional silver salts and scaffolds.
  • Characterization of the synthesized silver nanoclusters.
  • Electrochemical testing of Ag NCs as catalysts for ORR in alkaline media.

Main Results:

  • A high-yield strategy for synthesizing very small silver nanoclusters was established.
  • The synthesized Ag NCs demonstrated high catalytic activity for the oxygen reduction reaction (ORR).
  • The study confirmed the excellent catalytic properties of Ag NCs for ORR.

Conclusions:

  • Very small silver nanoclusters (2-5 atoms) can be synthesized with high yield.
  • Ag NCs are high-performance catalysts for the oxygen reduction reaction (ORR).
  • Ag NCs show significant potential for use in alkaline fuel cells.