In situ formation of CeO2 coupled with hollow NiCo-LDH nanosheets for efficient photocatalytic hydrogen evolution,Inorganic Chemistry Frontiers

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In situ formation of CeO2 coupled with hollow NiCo-LDH nanosheets for efficient photocatalytic hydrogen evolution
Inorganic Chemistry Frontiers ( IF 6.1 ) Pub Date : 2024-07-01 , DOI: 10.1039/d4qi01435a
Qingyi Liu ₁ , Guoying Tan ₁ , Yu Long ₁ , Jiaxu Wei ₁ , Hao Tian ₁ , Shiyu Xie ₁ , Yu Tang _{1,

2}

Affiliation

Designing heterojunction hydrogen evolution photocatalysts with advanced hierarchical structures and rational compositions is crucial to achieving efficient conversion of green energy, but remains challenging. Here, a facile in situ modification strategy was developed to couple CeO₂ while forming hollow NiCo-LDH nanosheets, leading to a unique NiCo-LDH/CeO₂ nanosheet heterostructure catalyst with enhanced photocatalytic hydrogen production performance. Through experiments and dynamic simulations, the reaction process was deeply studied, confirming the formation of heterojunction rather than doped products. Surprisingly, thanks to the advantages of a hollow lamellar architecture and the presence of interfacial interactions, the hydrogen production rate of dye-sensitized NiCo-LDH/CeO₂ nanosheets under visible light irradiation reaches 4312 μmol h⁻¹ g⁻¹, which is twice as much as that of NiCo-LDH nanosheets. Meanwhile, the Ni sites in the NiCo-LDH/CeO₂ heterojunction having a smaller Gibbs free energy may act as active centers. The current work provides new insights into the rational design and construction of efficient heterojunction catalysts with hierarchical structures.

10th Anniversary Statement Professor Yu Tang received her Master's, and Doctoral degrees in Inorganic Chemistry from the College of Chemistry and Chemical Engineering at Lanzhou University in 1996 and 1999, and continued her career there as a researcher and educator in the field. Her research team is deeply involved in the study of inorganic chemistry, specifically focusing on the precise synthesis and functional applications of rare-earth complex-based materials. In 2016, her team published its first academic paper in the journal Inorganic Chemistry Frontiers and has continued to engage with the publication since then. This journal has fostered international cooperation and exchange, crucial for advancing the understanding and application of inorganic materials in China and globally. In celebration of the tenth anniversary of Inorganic Chemistry Frontiers, we are eager to see the journal further increase the global impact and scope of inorganic chemistry research. Wishing Inorganic Chemistry Frontiers continued success and reaching new heights.

更新日期：2024-07-01

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