Citation: Yong-Ping GUO, Ming-Sheng GUI, Jin-Long ZHOU, Li YANG. Synthesis and Visible-Light Photocatalytic Activity of Carbon Spheres Decorated g-C₃N₄ Composites[J]. Chinese Journal of Inorganic Chemistry, ;2021, 37(6): 977-983. doi: 10.11862/CJIC.2021.128 shu

Synthesis and Visible-Light Photocatalytic Activity of Carbon Spheres Decorated g-C₃N₄ Composites

College of Chemistry and Environmental Engineering, Sichuan University of Science & Engineering, Zigong, Sichuan 643000, China

Corresponding author: Ming-Sheng GUI, 115423432@qq.com
Received Date: 8 October 2020
Revised Date: 15 April 2021

Figures(7)

A kind of carbon spheres decorated carbon nitride (C/g-C₃N₄) composite photocatalysts were successfully synthesized by hydrothermal method using glucose and g-C₃N₄ as raw materials. The structure, composition, morphology, specific surface area and optical properties of these photocatalysts were fully characterized by X-ray powder diffraction, scanning electron microscope, N₂ adsorption-desorption, ultraviolet-visible diffuse reflectance spectroscopy, surface photovoltage spectroscopy and electron paramagnetic resonance. The results showed that the carbon spheres with a diameter of about 20 nm were tightly present on the surface of g-C₃N₄. When the dosage ratio of glucose to g-C₃N₄ (mass fraction) was 1%, the composite photocatalyst was the best catalyst. Compared with g-C₃N₄, the specific surface area of g-C₃N₄ with 1% C (1% C/g-C₃N₄) was significantly increased, the visible light response range was expanded, and the separation efficiency of photogenerated electrons and holes of the catalyst was also improved. In addition, under the irradiation of a 400 W metal halide lamp with 420 nm filter, 87% of rhodamine B (10 μmol·L^-1) could be fully degraded by 1% C/g-C₃N₄ composite photocatalyst within 80 min. The efficiency of this catalyst was three times that of pure g-C₃N₄ under the same conditions and its stability was also good.
- photocatalysis,
- composite,
- carbon sphere,
- g-C₃N₄,
- rhodamine B
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Synthesis and Visible-Light Photocatalytic Activity of Carbon Spheres Decorated g-C3N4 Composites

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Synthesis and Visible-Light Photocatalytic Activity of Carbon Spheres Decorated g-C₃N₄ Composites