SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2022, Vol. 48 ›› Issue (8): 1-11.DOI: 10.1016/j.cjche.2021.06.027

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Pomelo biochar as an electron acceptor to modify graphitic carbon nitride for boosting visible-light-driven photocatalytic degradation of tetracycline

Feng Guo1,2, Chunli Shi1, Wei Sun1, Yanan Liu1, Xue Lin1, Weilong Shi3,4   

  1. 1. School of Material Science and Engineering, Beihua University, Jilin 132013, China;
    2. School of Energy and Power, Jiangsu University of Science and Technology, Zhenjiang 212003, China;
    3. School of Material Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China;
    4. College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
  • Received:2021-03-09 Revised:2021-06-21 Online:2022-09-30 Published:2022-08-28
  • Contact: Xue Lin,E-mail:jlsdlinxue@126.com;Weilong Shi,E-mail:shiwl@just.edu.cn
  • Supported by:
    The authors would like to acknowledge the founding support from the National Natural Science Foundation of China (21906072, 22006057 and 31971616), the Natural Science Foundation of Jiangsu Province (BK20190982), “Doctor of Mass Entrepreneurship and Innovation” Project in Jiangsu Province, Henan Postdoctoral Foundation (202003013), the Science and Technology Research Project of the Department of Education of Jilin Province (JJKH20200039KJ), the Science and Technology Research Project of Jilin City (20190104120, 201830811) and the Project of Jilin Provincial Science and Technology Development Plan (20190201277JC, 20200301046RQ, YDZJ202101ZYTS070).

Pomelo biochar as an electron acceptor to modify graphitic carbon nitride for boosting visible-light-driven photocatalytic degradation of tetracycline

Feng Guo1,2, Chunli Shi1, Wei Sun1, Yanan Liu1, Xue Lin1, Weilong Shi3,4   

  1. 1. School of Material Science and Engineering, Beihua University, Jilin 132013, China;
    2. School of Energy and Power, Jiangsu University of Science and Technology, Zhenjiang 212003, China;
    3. School of Material Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China;
    4. College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
  • 通讯作者: Xue Lin,E-mail:jlsdlinxue@126.com;Weilong Shi,E-mail:shiwl@just.edu.cn
  • 基金资助:
    The authors would like to acknowledge the founding support from the National Natural Science Foundation of China (21906072, 22006057 and 31971616), the Natural Science Foundation of Jiangsu Province (BK20190982), “Doctor of Mass Entrepreneurship and Innovation” Project in Jiangsu Province, Henan Postdoctoral Foundation (202003013), the Science and Technology Research Project of the Department of Education of Jilin Province (JJKH20200039KJ), the Science and Technology Research Project of Jilin City (20190104120, 201830811) and the Project of Jilin Provincial Science and Technology Development Plan (20190201277JC, 20200301046RQ, YDZJ202101ZYTS070).

Abstract: In this study, biochar (BC) derived from pomelo was prepared via a high-temperature calcination method to modify the graphitic carbon nitride (g-C3N4) to synthesize the BC/g-C3N4 composite for the degradation of the tetracycline (TC) antibiotic under visible light irradiation. The experimental results exhibit that the optimal feeding weight ratio of biochar/urea is 0.03:1 in BC/g-C3N4 composite could show the best photocatalytic activity with the degradation rate of tetracycline is 83% in 100?min irradiation. The improvement of photocatalytic activity is mainly attributed to the following two points: (i) the strong bonding with π-π stacking between BC and g-C3N4 make the photogenerated electrons of light-excited g-C3N4 transfer to BC, quickly and improve the separation efficiency of carriers; (ii) the introduction of BC reduces the distance for photogenerated electrons to migrate to the surface and increases the specific surface area for providing more active sites. This study provides a sustainable, economical and promising method for the synthesis of photocatalytic materials their application to wastewater treatment.

Key words: Pomelo, Biochar, Graphitic carbon nitride, Photocatalytic degradation, Electron acceptor

摘要: In this study, biochar (BC) derived from pomelo was prepared via a high-temperature calcination method to modify the graphitic carbon nitride (g-C3N4) to synthesize the BC/g-C3N4 composite for the degradation of the tetracycline (TC) antibiotic under visible light irradiation. The experimental results exhibit that the optimal feeding weight ratio of biochar/urea is 0.03:1 in BC/g-C3N4 composite could show the best photocatalytic activity with the degradation rate of tetracycline is 83% in 100?min irradiation. The improvement of photocatalytic activity is mainly attributed to the following two points: (i) the strong bonding with π-π stacking between BC and g-C3N4 make the photogenerated electrons of light-excited g-C3N4 transfer to BC, quickly and improve the separation efficiency of carriers; (ii) the introduction of BC reduces the distance for photogenerated electrons to migrate to the surface and increases the specific surface area for providing more active sites. This study provides a sustainable, economical and promising method for the synthesis of photocatalytic materials their application to wastewater treatment.

关键词: Pomelo, Biochar, Graphitic carbon nitride, Photocatalytic degradation, Electron acceptor