SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2018, Vol. 26 ›› Issue (4): 753-760.DOI: 10.1016/j.cjche.2017.10.010

• Catalysis, Kinetics and Reaction Engineering • 上一篇    下一篇

Porous g-C3N4 with enhanced adsorption and visible-light photocatalytic performance for removing aqueous dyes and tetracycline hydrochloride

Junlei Zhang1, Zhen Ma1,2   

  1. 1 Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention(LAP3), Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China;
    2 Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, PR China
  • 收稿日期:2017-09-13 修回日期:2017-10-11 出版日期:2018-04-28 发布日期:2018-05-19
  • 通讯作者: Zhen Ma,E-mail address:zhenma@fudan.edu.cn
  • 基金资助:

    Supported by the National Natural Science Foundation of China (Grant No. 21477022).

Porous g-C3N4 with enhanced adsorption and visible-light photocatalytic performance for removing aqueous dyes and tetracycline hydrochloride

Junlei Zhang1, Zhen Ma1,2   

  1. 1 Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention(LAP3), Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China;
    2 Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, PR China
  • Received:2017-09-13 Revised:2017-10-11 Online:2018-04-28 Published:2018-05-19
  • Supported by:

    Supported by the National Natural Science Foundation of China (Grant No. 21477022).

摘要: Porous g-C3N4 samples were obtained by simply calcining bulk g-C3N4 in static air in a muffle oven. The photocatalytic performance of these samples was evaluated through the removal of aqueous organic dyes (methylene blue and methyl orange) and tetracycline hydrochloride under visible-light irradiation (λ > 420 nm). Compared to bulk g-C3N4, porous g-C3N4 exhibited much better capability for removing these contaminants, especially under visible-light irradiation, due to the enlarged specific surface area and more efficient separation of photogenerated charge carries. In particular, porous g-C3N4 obtained by calcining bulk g-C3N4 in air at 525℃ showed the highest visible-light-driven catalytic activity among these samples. Superoxide radical anions (·O2-) were found to be the primary active species responsible for photodegradation.

关键词: C3N4, Catalyst, Reaction, Waste treatment, Dyes, Tetracycline hydrochloride

Abstract: Porous g-C3N4 samples were obtained by simply calcining bulk g-C3N4 in static air in a muffle oven. The photocatalytic performance of these samples was evaluated through the removal of aqueous organic dyes (methylene blue and methyl orange) and tetracycline hydrochloride under visible-light irradiation (λ > 420 nm). Compared to bulk g-C3N4, porous g-C3N4 exhibited much better capability for removing these contaminants, especially under visible-light irradiation, due to the enlarged specific surface area and more efficient separation of photogenerated charge carries. In particular, porous g-C3N4 obtained by calcining bulk g-C3N4 in air at 525℃ showed the highest visible-light-driven catalytic activity among these samples. Superoxide radical anions (·O2-) were found to be the primary active species responsible for photodegradation.

Key words: C3N4, Catalyst, Reaction, Waste treatment, Dyes, Tetracycline hydrochloride