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author:

Yang, Xuan (Yang, Xuan.) [1] | Wang, Xueqin (Wang, Xueqin.) [2] | Xu, Shenghao (Xu, Shenghao.) [3] | Lu, Beili (Lu, Beili.) [4] | Huang, Biao (Huang, Biao.) [5] | Zheng, Xinyu (Zheng, Xinyu.) [6] | Lin, Guanfeng (Lin, Guanfeng.) [7]

Indexed by:

EI Scopus SCIE

Abstract:

Hydroquinone (HQ) in wastewater is of great concern, as it is harmful to human health and threatens the ecological environment. However, the existing adsorbents have low adsorption capacity for HQ. To improve the removal of HQ, N,S-codoped activated carbon-ZIF-67 (NSAC-ZIF-67@C) was synthesized in this study by in situ growth of ZIF-67 on N,S-codoped activated carbon (NSAC) and carbonization. The influence of pH, contact time, and initial concentration on the adsorption behaviors of NSAC-ZIF-67@C on HQ were investigated. Owing to the synergistic effect of abundant active sites and well-developed pore structure, the NSAC-ZIF-67@C achieved a prominent adsorption capacity of 962 mgg(-1) and can still retain high adsorption performance after 5 cycles for HQ, which is superior to that of reported other adsorbents. HQ adsorption follows the pseudo-second-order kinetics model (R-2 = 0.99999) and the Freundlich isotherm model. X-ray photoelectron spectroscopy (XPS) analysis before and after adsorption as well as density functional theory (DFT) calculation results showed that pyridinic-N-termini were conducive to the pi-pi interactions and hydrogen-bonding interactions. Therefore, the adsorption mechanisms of NSAC-ZIF-67@C on HQ involve pore filling, electrostatic attraction, pi-pi interaction, and hydrogen bonding. This study is expected to provide a reference for designing highly effective adsorbents for wastewater treatment.

Keyword:

adsorption hydroquinone N S-codoped activatedcarbon wastewater ZIF-67

Community:

  • [ 1 ] [Yang, Xuan]Ningbo Univ Technol, Sch New Energy, Ningbo 315336, Peoples R China
  • [ 2 ] [Xu, Shenghao]Ningbo Univ Technol, Sch New Energy, Ningbo 315336, Peoples R China
  • [ 3 ] [Wang, Xueqin]Fuzhou Univ, Coll Chem Engn, Fuzhou 350002, Peoples R China
  • [ 4 ] [Lu, Beili]Fujian Agr & Forestry Univ, Coll Mat Engn, Fuzhou 350002, Peoples R China
  • [ 5 ] [Huang, Biao]Fujian Agr & Forestry Univ, Coll Mat Engn, Fuzhou 350002, Peoples R China
  • [ 6 ] [Lin, Guanfeng]Fujian Agr & Forestry Univ, Coll Mat Engn, Fuzhou 350002, Peoples R China
  • [ 7 ] [Zheng, Xinyu]Fujian Agr & Forestry Univ, Coll Life Sci, Fuzhou 350002, Peoples R China

Reprint 's Address:

  • [Lin, Guanfeng]Fujian Agr & Forestry Univ, Coll Mat Engn, Fuzhou 350002, Peoples R China;;[Zheng, Xinyu]Fujian Agr & Forestry Univ, Coll Life Sci, Fuzhou 350002, Peoples R China;;

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Source :

ACS APPLIED MATERIALS & INTERFACES

ISSN: 1944-8244

Year: 2024

Issue: 26

Volume: 16

Page: 34254-34265

8 . 5 0 0

JCR@2023

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 2

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