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Updated: Apr 13, 2026
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A Simple, Low-cost, and Robust System to Measure the Volume of Hydrogen Evolved by Chemical Reactions with Aqueous Solutions
Published on: August 17, 2016
19.8K
Vacancy engineering of TiO2 with low Pt content for efficient hydrogen generation
Jianyang Gao1, Yuanzong Shen1, Jinxiao Gao2
1College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China.
Chemical Communications (Cambridge, England)
|June 26, 2025
Summary
A novel microwave method rapidly synthesizes platinum on titanium dioxide (Pt/TiO2) for efficient hydrogen evolution. This catalyst demonstrates superior performance and stability compared to commercial catalysts.
Area of Science:
- Materials Science
- Electrochemistry
- Catalysis
Background:
- Precious metal-decorated titanium dioxide (TiO2) is key for hydrogen evolution reaction (HER) catalysis.
- Conventional synthesis methods are often energy-intensive and complex.
Purpose of the Study:
- To develop an ultra-fast and simple microwave-assisted synthesis for platinum-loaded TiO2 (Pt/TiO2) nanoparticles.
- To investigate the catalytic performance of the synthesized Pt/TiO2 for HER.
Main Methods:
- Microwave-assisted synthesis of black TiO2 with low platinum loading (Pt/TiO2) in 70 seconds.
- Electrochemical characterization in 0.5 M H2SO4 to evaluate HER performance.
- Analysis of electron transfer, metal-support interaction, and catalytic activity.
Main Results:
- The synthesized Pt/TiO2 exhibited excellent HER performance, requiring only 11 mV to reach 10 mA cm-2.
- A low Tafel slope of 24.1 mV dec-1 indicates efficient catalytic kinetics.
- The mass activity and turnover frequency of Pt/TiO2 significantly surpassed those of commercial Pt/C.
Conclusions:
- The microwave strategy offers a rapid and efficient route for preparing advanced Pt/TiO2 catalysts.
- The engineered oxygen vacancies and enhanced metal-support interactions are crucial for superior HER activity.
- This approach provides a promising pathway for designing high-performance catalysts for energy conversion applications.
