PMID- 25548873
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20150521
LR  - 20150120
IS  - 1520-510X (Electronic)
IS  - 0020-1669 (Linking)
VI  - 54
IP  - 2
DP  - 2015 Jan 20
TI  - Application of mechanosynthesized azine-decorated zinc(II) metal-organic 
      frameworks for highly efficient removal and extraction of some heavy-metal ions 
      from aqueous samples: a comparative study.
PG  - 425-33
LID - 10.1021/ic5015384 [doi]
AB  - The three zinc(II) metal-organic frameworks [Zn2(oba)2(4-bpdb)].(DMF)x (TMU-4), 
      [Zn(oba)(4-bpdh)0.5]n.(DMF)y (TMU-5), and [Zn(oba)(4-bpmb)0.5]n.(DMF)z (TMU-6) 
      [DMF = dimethylformamide, H2oba = 4,4'-oxybisbenzoic acid, 4-bpdb = 
      1,4-bis(4-pyridyl)-2,3-diaza-1,3-butadiene, 4-bpdh = 
      2,5-bis(4-pyridyl)-3,4-diaza-2,4-hexadiene, and 4-bpmb = 
      N(1),N(4)-bis((pyridin-4-yl)methylene)benzene-1,4-diamine], which contain 
      azine-functionalized pores, have been successfully synthesized by 
      mechanosynthesis as a convenient, rapid, low-cost, solventless, and green 
      process. These MOFs were studied for the removal and extraction of some 
      heavy-metal ions from aqueous samples, and the effects of the basicity and void 
      space of these MOFs on adsorption efficiency were evaluated. The results showed 
      that, for trace amounts of metal ions, the basicity of the N-donor ligands in the 
      MOFs determines the adsorption efficiency of the MOFs for the metal ions. In 
      contrast, at high concentrations of metal ions, the void space of the MOFs plays 
      a main role in the adsorption process. The studies conducted revealed that, among 
      the three MOFs, TMU-6 had a lower adsorption efficiency for metal ions than the 
      other two MOFs. This result can be attributed to the greater basicity of the 
      azine groups on the TMU-4 and TMU-5 pore walls as compared to the imine groups on 
      the N-donor ligands on the TMU-6 pore walls. Subsequently, TMU-5 was chosen as an 
      efficient sorbent for the extraction and preconcentration of trace amounts of 
      some heavy-metal ions including Cd(II), Co(II), Cr(III), Cu(II), and Pb(II), 
      followed by their determination by flow injection inductively coupled plasma 
      optical emission spectrometry. Several variables affecting the extraction 
      efficiency of the analytes were investigated and optimized. The optimized 
      methodology exhibits a good linearity between 0.05 and 100 mug L(-1) (R(2) > 
      0.9935) and detection limits in the range of 0.01-1.0 mug L(-1). The method has 
      enhancement factors between 42 and 225 and relative standard deviations (RSDs) of 
      2.9-6.2%. Subsequently, the potential applicability of the proposed method was 
      evaluated for the extraction and determination of target metal ions in some 
      environmental water samples.
FAU - Tahmasebi, Elham
AU  - Tahmasebi E
AD  - Department of Chemistry, Faculty of Sciences, Tarbiat Modares University , 
      Tehran, Islamic Republic of Iran.
FAU - Masoomi, Mohammad Yaser
AU  - Masoomi MY
FAU - Yamini, Yadollah
AU  - Yamini Y
FAU - Morsali, Ali
AU  - Morsali A
LA  - eng
PT  - Journal Article
DEP - 20141230
PL  - United States
TA  - Inorg Chem
JT  - Inorganic chemistry
JID - 0366543
EDAT- 2014/12/31 06:00
MHDA- 2014/12/31 06:01
CRDT- 2014/12/31 06:00
PHST- 2014/12/31 06:00 [entrez]
PHST- 2014/12/31 06:00 [pubmed]
PHST- 2014/12/31 06:01 [medline]
AID - 10.1021/ic5015384 [doi]
PST - ppublish
SO  - Inorg Chem. 2015 Jan 20;54(2):425-33. doi: 10.1021/ic5015384. Epub 2014 Dec 30.