SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2022, Vol. 44 ›› Issue (4): 148-156.DOI: 10.1016/j.cjche.2021.07.023

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Insights into high-efficient removal of tetracycline by a codoped mesoporous carbon adsorbent

Xinyu Chen1, Shuo Shi1, Ximei Han1, Min Li1, Ying Nian1, Jing Sun2, Wentao Zhang1, Tianli Yue1, Jianlong Wang1   

  1. 1 College of Food Science and Engineering, Northwest A&F University, Yangling 712100, China;
    2 Qinghai Provincial Key Laboratory of Qinghai-Tibet Plateau Biological Resources, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining 810008, China
  • Received:2020-12-07 Revised:2021-07-18 Online:2022-06-18 Published:2022-04-28
  • Contact: Wentao Zhang,E-mail:zhangwt@nwsuaf.edu.cn
  • Supported by:
    This work was financed by Grants from National Science Foundation of China (21675127, 31901794), Chinese Universities Scientific Fund (2452018083), the National Postdoctoral Program for Innovative Talents (BX20180263), the Tang Scholar by Cyrus Tang Foundation, the Young Talent Fund of University Association for Science and Technology in Shaanxi, China (2019-02-03), the Development Project of Qinghai Provincial Key Laboratory (2017-ZJ-Y10), the Key Research and Development Program of Shaanxi Province (2019NY-111).

Insights into high-efficient removal of tetracycline by a codoped mesoporous carbon adsorbent

Xinyu Chen1, Shuo Shi1, Ximei Han1, Min Li1, Ying Nian1, Jing Sun2, Wentao Zhang1, Tianli Yue1, Jianlong Wang1   

  1. 1 College of Food Science and Engineering, Northwest A&F University, Yangling 712100, China;
    2 Qinghai Provincial Key Laboratory of Qinghai-Tibet Plateau Biological Resources, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining 810008, China
  • 通讯作者: Wentao Zhang,E-mail:zhangwt@nwsuaf.edu.cn
  • 基金资助:
    This work was financed by Grants from National Science Foundation of China (21675127, 31901794), Chinese Universities Scientific Fund (2452018083), the National Postdoctoral Program for Innovative Talents (BX20180263), the Tang Scholar by Cyrus Tang Foundation, the Young Talent Fund of University Association for Science and Technology in Shaanxi, China (2019-02-03), the Development Project of Qinghai Provincial Key Laboratory (2017-ZJ-Y10), the Key Research and Development Program of Shaanxi Province (2019NY-111).

Abstract: Adsorbents with simple preparation and high surface area have become increasingly prevalent for the removal of organic contaminants. Herein, a carbon nanoplate codoped by Co and N elements with abundant ordered mesoporous (Co/N-MCs) was applied as an adsorbent for tetracycline removal. Taking integrated advantages of ordered mesopores on carbon-based structures and N-doping inducing the strengthened π–π dispersion and generation of pyridinic N, as well as cobaltic nanoparticles embedded in carbon nanoplates, the Co/N-MCs was tailored for high efficiently absorbing tetracycline via π-π interaction, Lewis acid-base interaction, metal complexation and electrostatic attraction. The Co/N-MCs had the advantages of high surface area, porous structure, plenty adsorption sites, and easy separation. As such, the as-prepared Co/N-MCs adsorbents significantly enhanced tetracycline removal performance with a maximum adsorption capacity of 344.83 mg·g-1 at pH 6 and good reusability, which was finally applied to removal tetracycline from tap water sample. Furthermore, the adsorption process towards tetracycline hydrochloride could be well attributed to the pseudo-second-order kinetic and Langmuir isotherm models. Compared with traditional carbon-based adsorbents, it owns a simpler synthesis method and a higher adsorption capacity, as well as it is a promising candidate for water purification.

Key words: Mechanism, Carbon, Cobalt/nitrogen codoping, Tetracycline, Adsorption

摘要: Adsorbents with simple preparation and high surface area have become increasingly prevalent for the removal of organic contaminants. Herein, a carbon nanoplate codoped by Co and N elements with abundant ordered mesoporous (Co/N-MCs) was applied as an adsorbent for tetracycline removal. Taking integrated advantages of ordered mesopores on carbon-based structures and N-doping inducing the strengthened π–π dispersion and generation of pyridinic N, as well as cobaltic nanoparticles embedded in carbon nanoplates, the Co/N-MCs was tailored for high efficiently absorbing tetracycline via π-π interaction, Lewis acid-base interaction, metal complexation and electrostatic attraction. The Co/N-MCs had the advantages of high surface area, porous structure, plenty adsorption sites, and easy separation. As such, the as-prepared Co/N-MCs adsorbents significantly enhanced tetracycline removal performance with a maximum adsorption capacity of 344.83 mg·g-1 at pH 6 and good reusability, which was finally applied to removal tetracycline from tap water sample. Furthermore, the adsorption process towards tetracycline hydrochloride could be well attributed to the pseudo-second-order kinetic and Langmuir isotherm models. Compared with traditional carbon-based adsorbents, it owns a simpler synthesis method and a higher adsorption capacity, as well as it is a promising candidate for water purification.

关键词: Mechanism, Carbon, Cobalt/nitrogen codoping, Tetracycline, Adsorption