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Updated: Jun 14, 2025

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Published on: October 5, 2019
Synergistically-mediated highly-efficient visible-light-driven hydrogen evolution activity using Ohmic/Schottky-type
Wenxue Zhao1, Aihua Yan1, Zigao Su2
1School of Low-Carbon Energy and Power Engineering, China University of Mining and Technology, Xuzhou 221116, China; School of Materials and Physics, China University of Mining and Technology, Xuzhou 221116, China.
Novel CoS/Sv-ZnIn2S4/MoS2 composites boost photocatalytic hydrogen production. This multiplex-optimization strategy enhances efficiency and stability for sustainable energy solutions.
Area of Science:
- Materials Science
- Photocatalysis
- Renewable Energy
Background:
- Photocatalytic hydrogen evolution is key for sustainable energy.
- Improving photocatalyst efficiency and stability remains a challenge.
Purpose of the Study:
- To synthesize novel CoS/Sv-ZnIn2S4/MoS2 composites.
- To enhance photocatalytic hydrogen evolution reaction (HER) efficiency and photostability.
Main Methods:
- In situ synthesis of CoS/Sv-ZnIn2S4/MoS2 composites.
- Utilizing synergistic effects of sulfur vacancy and heterojunctions (Schottky and Ohmic).
Main Results:
- Achieved a high photocatalytic hydrogen evolution rate of 18.43 mmol g-1 h-1 under visible light.
- Obtained apparent quantum efficiencies of 72.14% (350 nm) and 9.91% (420 nm).
- Demonstrated enhanced light absorption, charge separation, and transfer.
Conclusions:
- The CoS/Sv-ZnIn2S4/MoS2 composite exhibits superior photocatalytic performance.
- In situ design of multiplex-optimization photocatalysts is effective for hydrogen production.
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