Citation: Qing LIN, Miao-Miao LIU, Xi-Hang WU, Shui-Ping LI, Yuan-Yuan WANG, Xue-Min HU, Wei WANG, Xiao-Juan ZHANG. Preparation and Photocatalytic Performances of Au@g-C₃N₄ Scaffold[J]. Chinese Journal of Inorganic Chemistry, ;2022, 38(4): 589-598. doi: 10.11862/CJIC.2022.058 shu

Preparation and Photocatalytic Performances of Au@g-C₃N₄ Scaffold

1.
School of Materials Engineering, Jinling Institute of Technology, Nanjing 211169, China
2.
College of Civil Science and Engineering, Yangzhou University, Yangzhou, Jiangsu 225127, China

Corresponding author: Qing LIN, lnqing@jit.edu.cn
Received Date: 29 September 2021
Revised Date: 20 January 2022

Figures(11)

The plastic melamine-formaldehyde, which was synthesized from melamine, formaldehyde, and urea, was used as the precursor for the formation of the melamine-formaldehyde scaffold by the microwave foaming method. Then, Au was deposited on the melamine-formaldehyde scaffold by the magnetron sputtering. Finally, Au deposited graphite carbon nitride (Au@g-C₃N₄) scaffold with a specific surface area of 1 480 m²·g^-1 was successfully prepared by the thermal polymerization at 550 ℃. After deposited 6% Au, the UV - Vis spectrum of Au@g - C₃N₄ scaffold showed a new absorption peak at 550 nm, its absorption band edge was shifted to 507 nm, and its bandgap was reduced to 2.45 eV. Moreover, the fluorescence intensity and the electrochemical impedance decreased significantly, and the photocurrent increased from 0.28 to 0.62 μA·cm^-2. The deposition of Au not only widens the UV - Vis absorption performance of Au@g-C₃N₄ scaffold but also inhibits the recombination of the electron -hole pairs. The photocatalytic performance of Au@g-C₃N₄ scaffold was stable, and its photocatalytic degradation rate for rhodamine B was about one time higher than that of g - C₃N₄ scaffold. Additionally, the Au@g - C₃N₄ scaffold would be easy to recycle and be reused in the applications, because the Au@g-C₃N₄ scaffold has suitable tensile strength and toughness.
- graphitic carbon nitride,
- Au,
- scaffold,
- photocatalysis
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沈阳化工大学材料科学与工程学院沈阳 110142

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通讯作者: 陈斌, bchen63@163.com

Preparation and Photocatalytic Performances of Au@g-C₃N₄ Scaffold