PMID- 36178251
OWN - NLM
STAT- MEDLINE
DCOM- 20221013
LR  - 20221013
IS  - 1463-9084 (Electronic)
IS  - 1463-9076 (Linking)
VI  - 24
IP  - 39
DP  - 2022 Oct 12
TI  - Iodine speciation in deep eutectic solvents.
PG  - 24105-24115
LID - 10.1039/d2cp03185j [doi]
AB  - Iodine has been shown to act as a good electrocatalyst for metal digestion in 
      deep eutectic solvents (DESs) but little is known about its speciation or 
      reactivity in these high chloride containing media. Extended X-ray absorption 
      fine structure (EXAFS) spectroscopy measurements were made at the iodine K-edge 
      in a range of DESs with different glycolic or acidic hydrogen bond donors (HBDs), 
      along with examining the effect of iodine concentration between 0.01 and 0.5 mol 
      dm(-3). Three groups of speciation were detected: mixed I(2)Cl(-)/I(3)(-) (glycol 
      and lactic acid systems), mixed I(3)(-)/I(2) (oxalic acid and urea systems), and 
      singular I(3)(-) (levulinic acid system). UV-vis spectroscopy was used to confirm 
      the speciation. Electrochemistry showed that iodine redox behaviour was 
      unaffected by the changing speciation. Leaching data showed that metal oxidation 
      was related not only to changing iodine speciation, but also the reactivity and 
      coordination ability of the HBD.
FAU - Hartley, Jennifer M
AU  - Hartley JM
AUID- ORCID: 0000-0003-2174-4458
AD  - School of Chemistry, University of Leicester, Leicester, LE1 7RH, UK. 
      jmh84@le.ac.uk.
FAU - Scott, Sean
AU  - Scott S
AD  - School of Chemistry, University of Leicester, Leicester, LE1 7RH, UK. 
      jmh84@le.ac.uk.
FAU - Dilruba, Zarfishan
AU  - Dilruba Z
AD  - School of Chemistry, University of Leicester, Leicester, LE1 7RH, UK. 
      jmh84@le.ac.uk.
FAU - Lucio, Anthony J
AU  - Lucio AJ
AUID- ORCID: 0000-0003-0034-4914
AD  - School of Chemistry, University of Leicester, Leicester, LE1 7RH, UK. 
      jmh84@le.ac.uk.
FAU - Bird, Philip J
AU  - Bird PJ
AD  - School of Geography, Geology and the Environment, University of Leicester, 
      Leicester, LE1 7RH, UK.
FAU - Harris, Robert C
AU  - Harris RC
AD  - School of Geography, Geology and the Environment, University of Leicester, 
      Leicester, LE1 7RH, UK.
FAU - Jenkin, Gawen R T
AU  - Jenkin GRT
AUID- ORCID: 0000-0001-9202-7128
AD  - School of Geography, Geology and the Environment, University of Leicester, 
      Leicester, LE1 7RH, UK.
FAU - Abbott, Andrew P
AU  - Abbott AP
AUID- ORCID: 0000-0001-9556-8341
AD  - School of Chemistry, University of Leicester, Leicester, LE1 7RH, UK. 
      jmh84@le.ac.uk.
LA  - eng
PT  - Journal Article
DEP - 20221012
PL  - England
TA  - Phys Chem Chem Phys
JT  - Physical chemistry chemical physics : PCCP
JID - 100888160
RN  - 0 (Chlorides)
RN  - 0 (Deep Eutectic Solvents)
RN  - 0 (Glycols)
RN  - 0 (Solvents)
RN  - 33X04XA5AT (Lactic Acid)
RN  - 8W8T17847W (Urea)
RN  - 9679TC07X4 (Iodine)
RN  - 9E7R5L6H31 (Oxalic Acid)
SB  - IM
MH  - Chlorides
MH  - *Deep Eutectic Solvents
MH  - Glycols
MH  - *Iodine
MH  - Lactic Acid
MH  - Oxalic Acid
MH  - Solvents/chemistry
MH  - Urea/chemistry
EDAT- 2022/10/01 06:00
MHDA- 2022/10/14 06:00
CRDT- 2022/09/30 08:43
PHST- 2022/10/01 06:00 [pubmed]
PHST- 2022/10/14 06:00 [medline]
PHST- 2022/09/30 08:43 [entrez]
AID - 10.1039/d2cp03185j [doi]
PST - epublish
SO  - Phys Chem Chem Phys. 2022 Oct 12;24(39):24105-24115. doi: 10.1039/d2cp03185j.