Citation: Linlin Zhang, Jianjun Liao, Yakun Li, Wei Sun, Chengjun Ge. Cu single atoms embedded on hollow g-C₃N₄ nanospheres with enhanced charge transfer and separation for efficient photocatalysis[J]. Chinese Chemical Letters, ;2024, 35(2): 108568. doi: 10.1016/j.cclet.2023.108568 shu

Cu single atoms embedded on hollow g-C₃N₄ nanospheres with enhanced charge transfer and separation for efficient photocatalysis

Linlin Zhang ^a ,
Jianjun Liao ^{a, *,} ,
Yakun Li ^b ,
Wei Sun ^a ,
Chengjun Ge ^{a, *,}

a.
Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province, School of Ecology and Environment, Hainan University, Haikou 570228, China
b.
Shandong Ocean Chemical Industry Scientific Research Institute, Weifang 262737, China

liaojianjun008@163.com

cjge3007@163.com

Received Date: 10 February 2023
Revised Date: 16 April 2023
Accepted Date: 11 May 2023
Available Online: 12 May 2023

Figures(4)

Establishing an effective charge transfer mechanism in carbon nitride (g-C₃N₄) to enhance its photocatalytic activity remains a limiting nuisance. Herein, the combination design of a single Cu atom with hollow g-C₃N₄ nanospheres (Cu-N₃ structure) has been proven to offer significant opportunities for this crucial challenge. Moreover, this structure endows two pathways for charge transfer in the reaction, namely, the N atoms in the three-dimensional planar structure are only bonded with a single Cu atom, and charge transfer occurs between the plane and the layered structure due to the bending of the interlayered g-C₃N₄ hollow nanospheres. Notably, Cu-N₃ and hollow nanosphere structures have been certified to greatly enhance the efficiency of photogenerated carrier separation and transfer between the layers and planes by ultrafast spectral analysis. As a result, this catalyst possesses unparalleled photocatalytic efficiency. Specifically, the hydrogen production rate up to 2040 µmol h⁻¹ g⁻¹, which is 51 times that of pure C₃N₄ under visible light conditions. The photocatalytic degradation performance of tetracycline and oxidation performance of benzene is also expressed, with a degradation rate of 100%, a conversion of 97.3% and a selectivity of 99.9%. This work focuses on the structure-activity relationship to provide the possibilities for the development of potential photocatalytic materials.
- g-C₃N₄,
- Cu single atom,
- Hollow nanospheres,
- Charge transfer pathways,
- Photocatalytic hydrogen production
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Cu single atoms embedded on hollow g-C3N4 nanospheres with enhanced charge transfer and separation for efficient photocatalysis

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通讯作者: 陈斌, bchen63@163.com

Cu single atoms embedded on hollow g-C₃N₄ nanospheres with enhanced charge transfer and separation for efficient photocatalysis