Citation: Peidong Su, Junke Zhang, Ke Xiao, Shen Zhao, Ridha Djellabi, Xuewei Li, Bo Yang, Xu Zhao. C₃N₄ modified with single layer ZIF67 nanoparticles for efficient photocatalytic degradation of organic pollutants under visible light[J]. Chinese Journal of Catalysis, ;2020, 41(12): 1894-1905. doi: 10.1016/S1872-2067(20)63620-8 shu

C₃N₄ modified with single layer ZIF67 nanoparticles for efficient photocatalytic degradation of organic pollutants under visible light

Peidong Su ^a,b, ,
Junke Zhang ^a ,
Ke Xiao ^c ,
Shen Zhao ^b ,
Ridha Djellabi ^a ,
Xuewei Li ^a,b ,
Bo Yang ^a ,
Xu Zhao ^b

a College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, Guangdong, China;
b Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China;
c Department of Civil and Environmental Engineering, Jackson State University, Jackson, MS 39217, USA

Received Date: 5 March 2020
Revised Date: 17 April 2020

Fund Project: This work was jointly funded by the National Natural Science Foundation of China (21707154) and the National Major Science & Technology Program for Water Pollution Control & Treatment (2017ZX07202).

Uniformly distributed single layer of ZIF67-derived C₃N₄ (ZIF67-C₃N₄) was synthesized and applied to the photocatalytic degradation of methylene blue (MB) under visible light. Results indicated that the obtained ZIF67-C₃N₄has a maximum specific surface area of 541.392 m²/g, which is much larger than that of raw C₃N₄ of 97.291 m²/g. The investigation of C₃N₄ amount involved in ZIF67-C₃N₄on the photoactivity revealed that 2.57 g ZIF67 with 0.3 g C₃N₄, which named ZIF67-C₃N₄(0.3) exhibited superior photocatalytic activities. More than 90% of MB at 10 mg/L was degraded within 70 min with the addition of 0.01 g ZIF67-C₃N₄(0.3), while this time required for raw C₃N₄ was over 140 min. The effects of pH of solution, initial concentration of MB and dosage of C₃N₄ in ZIF67-C₃N₄composites on the photocatalytic efficiency for MB degradation were also evaluated. Quenching experiments indicated that the photo-induced holes (h⁺) and superoxide radicals (O^2-·) were mainly responsible for MB degradation. It is anticipated that the insertion of ZIF67 nanoparticles not only increases the adsorption capacity of C₃N₄ but also promotes the generation and migration of the photo-induced active species.
- Metal organic frameworks,
- Photocatalysis,
- C₃N₄,
- ZIF67,
- Visible light
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C3N4 modified with single layer ZIF67 nanoparticles for efficient photocatalytic degradation of organic pollutants under visible light

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C₃N₄ modified with single layer ZIF67 nanoparticles for efficient photocatalytic degradation of organic pollutants under visible light