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Study on hydrogen production performance of metal-doped ceria catalysts in photo-thermochemical water splitting systems
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Zhiyin ZHANG1, Huimin HU1, Zhengguang HE1, Jie YANG1, Kai YAN2, Bohan ZHANG2, Chang WEN2
Thermal Power Generation | 2025, 54(5) : 25 - 32
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Thermal Power Generation | 2025, 54(5): 25-32
• Special topic on new power generation technology •
Study on hydrogen production performance of metal-doped ceria catalysts in photo-thermochemical water splitting systems
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Zhiyin ZHANG1, Huimin HU1, Zhengguang HE1, Jie YANG1, Kai YAN2, Bohan ZHANG2, Chang WEN2
Affiliations
  • 1.PowerChina Hubei Electric Engineering Co., Ltd., Wuhan 435111, China
  • 2.School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
Published: 2025-05-25 doi: 10.19666/j.rlfd.202408195
Outline
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Focusing on the photo-thermochemical water splitting hydrogen production technology, where photoreaction and thermal reaction are carried out sequentially, the CeO2 synthesized by sol-gel method and its metal-doped catalysts were taken as the research objects to carry out experimental tests, through which the effects of photoreaction in generating oxygen vacancies and thermal reaction in hydrogen production were investigated. During the photoreaction, CeO2 catalysts doped with three elements (Fe, Cu, Zn) at three different ratios (5%, 10%, 15%) were used. The metal-doped catalysts were characterized by several methods, such as X-ray diffraction (XRD), transmission electron microscopy (TEM), electron paramagnetic resonance (EPR), photoluminescence (PL), ultraviolet visible diffuse reflectance spectroscopy (UV-Vis DRS), inductively coupled plasma (ICP), and BET specific surface area testing method. The results indicate that, the 10% Cu-doped CeO2 catalyst exhibits the best photothermal hydrogen production performance. This is attributed to the smallest size of Cu nanoparticles, which results in the smallest bandgap width for the Cu-doped CeO2 catalyst. Consequently, it can absorb higher energy photons, enhancing the light absorption capacity, and improving the separation and recombination rates of photogenerated charge carriers. This facilitates the formation of photogenerated oxygen vacancies, thereby enhances the hydrogen production capability during the thermal reaction process.

oxygen vacancy  /  dope  /  photo-thermochemical cycle  /  water electrolysis  /  hydrogen production
Zhiyin ZHANG, Huimin HU, Zhengguang HE, Jie YANG, Kai YAN, Bohan ZHANG, Chang WEN. Study on hydrogen production performance of metal-doped ceria catalysts in photo-thermochemical water splitting systems[J]. Thermal Power Generation, 2025 , 54 (5) : 25 -32 . DOI: 10.19666/j.rlfd.202408195
Funding
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  • National Key Research and Development Program(2022YFB4003801)
  • General Project of National Natural Science Foundation of China(52076091)
  • Technology Project of China Power Construction Co., Ltd.(DJ-ZDXM-2023-16)
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Year 2025 volume 54 Issue 5
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99
43
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Article Info
doi: 10.19666/j.rlfd.202408195
  • Receive Date：2024-08-16
  • Online Date：2026-03-06
  • Published：2025-05-25
Article Data
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History
  • Received：2024-08-16
Funding
National Key Research and Development Program(2022YFB4003801)
General Project of National Natural Science Foundation of China(52076091)
Technology Project of China Power Construction Co., Ltd.(DJ-ZDXM-2023-16)
Affiliations
    1.PowerChina Hubei Electric Engineering Co., Ltd., Wuhan 435111, China
    2.School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
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https://castjournals.cast.org.cn/joweb/rlfd/EN/10.19666/j.rlfd.202408195
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表12种不同金属材料的力学参数
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多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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