PMID- 33254906
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20201201
LR  - 20201201
IS  - 1879-1026 (Electronic)
IS  - 0048-9697 (Linking)
VI  - 754
DP  - 2021 Feb 1
TI  - Adsorption of iodinated trihalomethanes onto thiol functionalized ZIF-8s: Active 
      adsorption sites, adsorptive mechanisms, and dehalogenation by-products.
PG  - 142376
LID - S0048-9697(20)35905-2 [pii]
LID - 10.1016/j.scitotenv.2020.142376 [doi]
AB  - The adsorptive mechanisms operating in, and the effect of two different thiol 
      modification methods on, the removal of five iodinated trihalomethanes (I-THMs) 
      by the zeolite imidazolate framework (ZIF-8) were investigated in single and 
      mixed solutions. The direct postgrafting of dithioglycol to the zinc complex node 
      of ZIF-8 (ZF-SH) can increase the mesopore structures that enhance inner pore 
      accessibility; this increase is a critical property required for excellent 
      adsorption of I-THMs. The synergetic adsorptive interactions consist of Lewis 
      acid-base interactions via the Zn-Zn complex, ion-dipole interactions involving 
      the protonated hydroxyl and thiol groups, and hydrophobic interactions at the 
      imidazole ring. In contrast to ZF-SH, the (3-mercaptopropyl)-trimethoxy 
      functionalized silica coating on ZIF-8 (ZF-Si-SH) causes a lower thiol moiety and 
      a steric effect that is reflected in its lower adsorption capacity. In both 
      single and mixed solutions, the small molecular size and hydrophobic nature of 
      I-THMs can promote better adsorption capacity on all thiol-modified ZIF-8, while 
      the minus dipole charge distribution of the I-THMs structure plays a more 
      critical role in selective adsorption on pristine ZIF-8. Interestingly, the 
      dehalogenation of triiodomethane to diiodomethane due to a nucleophilic 
      substitution (S(N)2) reaction can be accelerated by the thiol functionalized 
      silica layer on ZIF-8.
CI  - Copyright (c) 2020 Elsevier B.V. All rights reserved.
FAU - Induvesa, Phacharapol
AU  - Induvesa P
AD  - International Postgraduate Programs in Hazardous Substance and Environmental 
      Management, Graduate School, Chulalongkorn University, Bangkok 10330, Thailand; 
      Center of Excellence on Hazardous Substance Management, Chulalongkorn University, 
      Bangkok 10330, Thailand.
FAU - Ratanatawanate, Chalita
AU  - Ratanatawanate C
AD  - National Nanotechnology Center (NANOTEC), National Science and Technology 
      Development Agency (NSTDA), Pathum Thani 12120, Thailand; Research Network of 
      NANOTEC, CU on Environment, Bangkok 10330, Thailand.
FAU - Wongrueng, Aunnop
AU  - Wongrueng A
AD  - Department of Environmental Engineering, Faculty of Engineering, Chiang Mai 
      University, Chiang Mai 50200, Thailand.
FAU - Punyapalakul, Patiparn
AU  - Punyapalakul P
AD  - Center of Excellence on Hazardous Substance Management, Chulalongkorn University, 
      Bangkok 10330, Thailand; Department of Environmental Engineering, Faculty of 
      Engineering, Chulalongkorn University, Bangkok 10330, Thailand; Research Unit 
      Control of Emerging Micropollutants in Environment, Chulalongkorn University, 
      Bangkok 10330, Thailand; Research Network of NANOTEC, CU on Environment, Bangkok 
      10330, Thailand. Electronic address: patiparn.p@chula.ac.th.
LA  - eng
PT  - Journal Article
DEP - 20200916
PL  - Netherlands
TA  - Sci Total Environ
JT  - The Science of the total environment
JID - 0330500
SB  - IM
OTO - NOTNLM
OT  - Adsorption mechanism
OT  - Dehalogenation
OT  - Iodinated trihalomethanes
OT  - Thiol modification
OT  - Zeolite imidazolate framework
COIS- Declaration of competing interest The authors declare that they have no known 
      competing financial interests or personal relationships that could have appeared 
      to influence the work reported in this paper.
EDAT- 2020/12/02 06:00
MHDA- 2020/12/02 06:01
CRDT- 2020/12/01 01:03
PHST- 2020/06/09 00:00 [received]
PHST- 2020/08/31 00:00 [revised]
PHST- 2020/09/12 00:00 [accepted]
PHST- 2020/12/01 01:03 [entrez]
PHST- 2020/12/02 06:00 [pubmed]
PHST- 2020/12/02 06:01 [medline]
AID - S0048-9697(20)35905-2 [pii]
AID - 10.1016/j.scitotenv.2020.142376 [doi]
PST - ppublish
SO  - Sci Total Environ. 2021 Feb 1;754:142376. doi: 10.1016/j.scitotenv.2020.142376. 
      Epub 2020 Sep 16.