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Updated: Jan 13, 2026

Heterogeneous Removal of Water-Soluble Ruthenium Olefin Metathesis Catalyst from Aqueous Media Via Host-Guest Interaction
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Enhancing the hydrogen evolution reaction on Ru/KTN through an RuClx intermediate strategy.

Guangzhen Zhao1,2, Chengzhi Xiao2, Tongzhou Hong2

  • 1State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Jinan, 250353, China.

Chemical Communications (Cambridge, England)
|January 8, 2026
PubMed
Summary

A new Ru/KTN-T catalyst was synthesized using an intermediate strategy for alkaline hydrogen evolution. This advanced catalyst shows enhanced kinetics and superior performance, offering a novel approach for efficient electrocatalyst design.

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Catalysis

Background:

  • Efficient electrocatalysts are crucial for hydrogen evolution reactions (HER) in alkaline media.
  • Developing catalysts with enhanced kinetics and stability remains a key challenge.

Purpose of the Study:

  • To synthesize a novel Ru/KTN-T catalyst using an RuClx intermediate strategy.
  • To investigate the performance of the Ru/KTN-T catalyst for alkaline HER.
  • To explore the role of high-valent Ruthenium in enhancing catalytic activity.

Main Methods:

  • Synthesis of Ru/KTN-T catalyst via an RuClx intermediate strategy.
  • Electrochemical characterization of the catalyst for hydrogen evolution reactions.
  • Performance evaluation at a current density of 10 mA cm-2.

Main Results:

  • The Ru/KTN-T catalyst exhibited high-valent Ruthenium (Ru).
  • Enhanced hydrogen desorption kinetics were observed.
  • A low overpotential of 40.6 mV at 10 mA cm-2 was achieved.
  • The catalyst outperformed those synthesized via one-step methods.

Conclusions:

  • The RuClx intermediate strategy is effective for synthesizing efficient Ru-based electrocatalysts.
  • High-valent Ru species in Ru/KTN-T significantly boost alkaline HER performance.
  • This work presents a novel and effective approach for designing advanced electrocatalysts for HER.