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author:

Lou, Xiaoyu (Lou, Xiaoyu.) [1] | Tang, Duanlian (Tang, Duanlian.) [2] | Ye, Changshen (Ye, Changshen.) [3] | Chen, Jie (Chen, Jie.) [4] | Qiu, Ting (Qiu, Ting.) [5]

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EI

Abstract:

Attempts to develop adsorbents for toxic Hg (II) removal from wastewater in an all-round high-capacity, rapid-kinetic and super-selective manner remain interesting but unsolved. Here, we report a novel class of conjugated micro-mesoporous poly(aniline)s (CMMPAs) by an ingenious integrated porosity design and decoration over porous organic polymers (POPs). We pre-create unstable ZIF-7-NH2 and crosslink it into POPs but remove it subsequently through a time-saving acid wash to allow the formation of mesopores and the 'in-situ' decoration of ZIF-7-NH2 ligands as adsorption sites on the pore wall. The resulting adsorbent exhibits an ultra-high capacity of 1032 mg g−1, extremely fast kinetic with h of 1425 mg g−1 min−1 that could reduce Hg (II) from 10 to 1 ppm in 2 s and further to 2 ppb in ca. 30 min, and nearly 100% exclusive adsorption towards Hg (II). The mesopore volume within 15–50 nm as created is responsive to the diffusion coefficient k2 (k2 = 0.0215 V-0.000079); the outstanding capture is also essentially trigged by the unique affinity from N sites, thus highlighting CMMPA as an appealing platform for drinking-water purification that would significantly serve for practical environmental application. © 2023 Elsevier B.V.

Keyword:

Adsorption Aniline Conjugated polymers Kinetics Mercury compounds Potable water

Community:

  • [ 1 ] [Lou, Xiaoyu]Engineering Research Center of Reactive Distillation, Fujian Province University, College of Chemical Engineering, Fuzhou University, Fujian, Fuzhou; 350108, China
  • [ 2 ] [Lou, Xiaoyu]Qingyuan Innovation Laboratory, Quanzhou, Fujian; 362801, China
  • [ 3 ] [Tang, Duanlian]Engineering Research Center of Reactive Distillation, Fujian Province University, College of Chemical Engineering, Fuzhou University, Fujian, Fuzhou; 350108, China
  • [ 4 ] [Tang, Duanlian]Qingyuan Innovation Laboratory, Quanzhou, Fujian; 362801, China
  • [ 5 ] [Ye, Changshen]Engineering Research Center of Reactive Distillation, Fujian Province University, College of Chemical Engineering, Fuzhou University, Fujian, Fuzhou; 350108, China
  • [ 6 ] [Ye, Changshen]Qingyuan Innovation Laboratory, Quanzhou, Fujian; 362801, China
  • [ 7 ] [Chen, Jie]Engineering Research Center of Reactive Distillation, Fujian Province University, College of Chemical Engineering, Fuzhou University, Fujian, Fuzhou; 350108, China
  • [ 8 ] [Chen, Jie]Qingyuan Innovation Laboratory, Quanzhou, Fujian; 362801, China
  • [ 9 ] [Qiu, Ting]Engineering Research Center of Reactive Distillation, Fujian Province University, College of Chemical Engineering, Fuzhou University, Fujian, Fuzhou; 350108, China
  • [ 10 ] [Qiu, Ting]Qingyuan Innovation Laboratory, Quanzhou, Fujian; 362801, China
  • [ 11 ] [Qiu, Ting]Fuzhou University International Joint Laboratory of Thermochemical Conversion of Biomass, Fujian, Fuzhou; 350108, China

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Source :

Separation and Purification Technology

ISSN: 1383-5866

Year: 2023

Volume: 325

8 . 2

JCR@2023

8 . 2 0 0

JCR@2023

ESI HC Threshold:39

JCR Journal Grade:1

CAS Journal Grade:2

Cited Count:

WoS CC Cited Count: 0

SCOPUS Cited Count: 16

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 2

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