PMID- 34885746
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20211210
LR  - 20211214
IS  - 1420-3049 (Electronic)
IS  - 1420-3049 (Linking)
VI  - 26
IP  - 23
DP  - 2021 Nov 26
TI  - The Influence of Hydrogen Bond Donors on the CO(2) Absorption Mechanism by the 
      Bio-Phenol-Based Deep Eutectic Solvents.
LID - 10.3390/molecules26237167 [doi]
LID - 7167
AB  - Recently, deep eutectic solvents (DESs), a new type of solvent, have been studied 
      widely for CO(2) capture. In this work, the anion-functionalized deep eutectic 
      solvents composed of phenol-based ionic liquids (ILs) and hydrogen bond donors 
      (HBDs) ethylene glycol (EG) or 4-methylimidazole (4CH(3)-Im) were synthesized for 
      CO(2) capture. The phenol-based ILs used in this study were prepared from 
      bio-derived phenols carvacrol (Car) and thymol (Thy). The CO(2) absorption 
      capacities of the DESs were determined. The absorption mechanisms by the DESs 
      were also studied using nuclear magnetic resonance (NMR), Fourier transform 
      infrared (FTIR), and mass spectroscopy. Interestingly, the results indicated that 
      CO(2) reacted with both the phenolic anions and EG, generating the phenol-based 
      carbonates and the EG-based carbonates, when CO(2) interacted with the DESs 
      formed by the ILs and EG. However, CO(2) only reacted with the phenolic anions 
      when the DESs formed by the ILs and 4CH(3)-Im. The results indicated that the 
      HBDs impacted greatly on the CO(2) absorption mechanism, suggesting the mechanism 
      can be tuned by changing the HBDs, and the different reaction pathways may be due 
      to the steric hinderance differences of the functional groups of the HBDs.
FAU - Wang, Ze
AU  - Wang Z
AD  - School of Science, China University of Geosciences, Beijing 100083, China.
FAU - Wang, Zonghua
AU  - Wang Z
AD  - School of Science, China University of Geosciences, Beijing 100083, China.
FAU - Chen, Jie
AU  - Chen J
AD  - School of Science, China University of Geosciences, Beijing 100083, China.
FAU - Wu, Congyi
AU  - Wu C
AD  - School of Science, China University of Geosciences, Beijing 100083, China.
FAU - Yang, Dezhong
AU  - Yang D
AUID- ORCID: 0000-0003-4490-3423
AD  - School of Science, China University of Geosciences, Beijing 100083, China.
LA  - eng
GR  - 21503196/National Natural Science Foundation of China/
PT  - Journal Article
DEP - 20211126
PL  - Switzerland
TA  - Molecules
JT  - Molecules (Basel, Switzerland)
JID - 100964009
SB  - IM
PMC - PMC8658771
OTO - NOTNLM
OT  - capture
OT  - carbon dioxide
OT  - deep eutectic solvents
OT  - insights
OT  - spectroscopy
COIS- The authors declare no conflict of interest.
EDAT- 2021/12/11 06:00
MHDA- 2021/12/11 06:01
PMCR- 2021/11/26
CRDT- 2021/12/10 01:08
PHST- 2021/10/14 00:00 [received]
PHST- 2021/11/19 00:00 [revised]
PHST- 2021/11/23 00:00 [accepted]
PHST- 2021/12/10 01:08 [entrez]
PHST- 2021/12/11 06:00 [pubmed]
PHST- 2021/12/11 06:01 [medline]
PHST- 2021/11/26 00:00 [pmc-release]
AID - molecules26237167 [pii]
AID - molecules-26-07167 [pii]
AID - 10.3390/molecules26237167 [doi]
PST - epublish
SO  - Molecules. 2021 Nov 26;26(23):7167. doi: 10.3390/molecules26237167.