1
|
Raichur A, Sinha N. Narrow spectrum nano-antibiotic for selective removal of ARB from contaminated water: New insights into stimuli response based on cellular attachment, lysis, and excretion. JOURNAL OF HAZARDOUS MATERIALS 2024; 472:134475. [PMID: 38733781 DOI: 10.1016/j.jhazmat.2024.134475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2024] [Revised: 04/14/2024] [Accepted: 04/27/2024] [Indexed: 05/13/2024]
Abstract
Narrow spectrum nano-antibiotics are supposedly the future trouble-shooters to improve the efficacy of conventional antimicrobials for treatment of severe bacterial infections, remove contamination from water and diminish the development of antibiotic resistance. In this study, antimicrobial peptide functionalized boron-carbon-nitride nanosheets ((Ant)pep@BCN NSs) are developed that are a promising wastewater disinfector and antibiotic resistant bactericide agent. These nanosheets are developed for selective removal and effective inactivation of antibiotic resistant bacteria (ARB) from water in presence of two virulent bacteria. The (Ant)pep@BCN NSs provide reactive surface receptors specific to the ARB. They mimic muralytic enzymes to damage the cell membrane of ARB. These NSs demonstrate 3-fold higher antimicrobial efficiency against the targeted ARB compared to pristine BCN even at lower concentrations. To the best of our knowledge, this is the first time that functionalized BCN has been developed to remove ARB selectively from wastewater. Furthermore, the (Ant)pep@BCN selectively reduced the microbiological load and led to morphological changes in Gram negative ARB in a mixed bacterial inoculum. These ARBs excreted outer-inner membrane vesicles (OIMVs) of triangular shape as a stimuli response to (Ant)pep@BCN NSs. These novel antimicrobial peptide-NSs have potential to improve treatment efficacy against ARB infections and water contamination.
Collapse
Affiliation(s)
- Archana Raichur
- Department of Mechanical Engineering, Indian Institute of Technology Kanpur, Kanpur 208016, India.
| | - Niraj Sinha
- Department of Mechanical Engineering, Indian Institute of Technology Kanpur, Kanpur 208016, India.
| |
Collapse
|
2
|
Lee R, Nunney TS, Isaacs M, Palgrave RG, Dey A. Monitoring the Behavior of Na Ions and Solid Electrolyte Interphase Formation at an Aluminum/Ionic Liquid Electrode/Electrolyte Interface via Operando Electrochemical X-ray Photoelectron Spectroscopy. ACS APPLIED MATERIALS & INTERFACES 2024. [PMID: 38932607 DOI: 10.1021/acsami.4c02241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/28/2024]
Abstract
In electrochemical energy storage devices, the interface between the electrode and the electrolyte plays a crucial role. A solid electrolyte interphase (SEI) is formed on the electrode surface due to spontaneous decomposition of the electrolyte, which in turn controls the dynamics of ion migration during charge and discharge cycles. However, the dynamic nature of the SEI means that its chemical structure evolves over time and as a function of the applied bias; thus, a true operando study is extremely valuable. X-ray photoelectron spectroscopy (XPS) is a widely used technique to understand the surface electronic and chemical properties, but the use of ultrahigh vacuum in standard instruments is a major hurdle for their utilization in measuring wet electrochemical processes. Herein, we introduce a 3-electrode electrochemical cell to probe the behavior of Na ions and the formation of SEI at the interface of an ionic liquid (IL) electrolyte and an aluminum electrode under operando conditions. A system containing 0.5 molar NaTFSI dissolved in the IL [BMIM][TFSI] was investigated using an Al working electrode and Pt counter and reference electrodes. By optimizing the scan rate of both XPS and cyclic voltammetry (CV) techniques, we captured the formation and evolution of SEI chemistry using real-time spectra acquisition techniques. A CV scan rate of 2 mVs-1 was coupled with XPS snapshot spectra collected at 10 s per core level. The technique demonstrated here provides a platform for the chemical analysis of materials beyond batteries.
Collapse
Affiliation(s)
- Roxy Lee
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, U.K
| | - Tim S Nunney
- Thermo Fisher Scientific, Unit 1, The Felbridge Centre, East Grinstead, West Sussex RH19 1XP, U.K
| | - Mark Isaacs
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, U.K
- HarwellXPS, Research Complex at Harwell, Rutherford Appleton Lab, Didcot OX11 0FA, U.K
| | - Robert G Palgrave
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, U.K
| | - Avishek Dey
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, U.K
- The Faraday Institution, Quad One, Harwell Science and Innovation Campus, OX11 0RA Didcot, U.K
| |
Collapse
|
3
|
Gousseva E, Towers Tompkins FK, Seymour JM, Parker LG, Clarke CJ, Palgrave RG, Bennett RA, Grau-Crespo R, Lovelock KRJ. Anion-Dependent Strength Scale of Interactions in Ionic Liquids from X-ray Photoelectron Spectroscopy, Ab Initio Molecular Dynamics, and Density Functional Theory. J Phys Chem B 2024; 128:5030-5043. [PMID: 38727250 PMCID: PMC11129296 DOI: 10.1021/acs.jpcb.4c00362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Revised: 04/22/2024] [Accepted: 04/22/2024] [Indexed: 05/24/2024]
Abstract
Using a combination of experiments and calculations, we have gained new insights into the nature of anion-cation interactions in ionic liquids (ILs). An X-ray photoelectron spectroscopy (XPS)-derived anion-dependent electrostatic interaction strength scale, determined using XPS core-level binding energies for IL cations, is presented here for 39 different anions, with at least 18 new anions included. Linear correlations of experimental XPS core-level binding energies for IL cations with (a) calculated core binding energies (ab initio molecular dynamics (AIMD) simulations were used to generate high-quality model IL structures followed by single-point density functional theory (DFT) to obtain calculated core binding energies), (b) experimental XPS core-level binding energies for IL anions, and (c) other anion-dependent interaction strength scales led to three main conclusions. First, the effect of different anions on the cation can be related to ground-state interactions. Second, the variations of anion-dependent interactions with the identity of the anion are best rationalized in terms of electrostatic interactions and not occupied valence state/unoccupied valence state interactions or polarizability-driven interactions. Therefore, the XPS-derived anion-dependent interaction strength scale can be explained using a simple electrostatic model based on electrostatic site potentials. Third, anion-probe interactions, irrespective of the identity of the probe, are primarily electrostatic, meaning that our electrostatic interaction strength scale captures some inherent, intrinsic property of anions independent of the probe used to measure the interaction strength scale.
Collapse
Affiliation(s)
| | | | - Jake M. Seymour
- Department
of Chemistry, University of Reading, Reading RG6 6DX, U.K.
| | - Lewis G. Parker
- Department
of Chemistry, University of Reading, Reading RG6 6DX, U.K.
| | - Coby J. Clarke
- School
of Chemistry, University of Nottingham, Nottingham NG7 2RD, U.K.
| | - Robert G. Palgrave
- Department
of Chemistry, University College London, London WC1H 0AJ, U.K.
| | - Roger A. Bennett
- Department
of Chemistry, University of Reading, Reading RG6 6DX, U.K.
| | | | | |
Collapse
|
4
|
Vichou E, Adjez Y, Li Y, Gómez-Mingot M, Fontecave M, Sánchez-Sánchez CM. Smart Electrode Surfaces by Electrolyte Immobilization for Electrocatalytic CO 2 Conversion. J Am Chem Soc 2024; 146:2824-2834. [PMID: 38240579 DOI: 10.1021/jacs.3c13315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2024]
Abstract
The activity and selectivity of molecular catalysts for the electrochemical CO2 reduction reaction (CO2RR) are influenced by the induced electric field at the electrode/electrolyte interface. We present here a novel electrolyte immobilization method to control the electric field at this interface by positively charging the electrode surface with an imidazolium cation organic layer, which significantly favors CO2 conversion to formate, suppresses hydrogen evolution reaction, and diminishes the operating cell voltage. Those results are well supported by our previous DFT calculations studying the mechanistic role of imidazolium cations in solution for CO2 reduction to formate catalyzed by a model molecular catalyst. This smart electrode surface concept based on covalent grafting of imidazolium on a carbon electrode is successfully scaled up for operating at industrially relevant conditions (100 mA cm-2) on an imidazolium-modified carbon-based gas diffusion electrode using a flow cell configuration, where the CO2 conversion to formate process takes place in acidic aqueous solution to avoid carbonate formation and is catalyzed by a model molecular Rh complex in solution. The formate production rate reaches a maximum of 4.6 gHCOO- m-2 min-1 after accumulating a total of 9000 C of charge circulated on the same electrode. Constant formate production and no significant microscopic changes on the imidazolium-modified cathode in consecutive long-term CO2 electrolysis confirmed the high stability of the imidazolium organic layer under operating conditions for CO2RR.
Collapse
Affiliation(s)
- Elli Vichou
- Laboratoire de Chimie des Processus Biologiques, Collège de France, UMR 8229 CNRS, Sorbonne Université, PSL Research University, 11 Place Marcelin Berthelot, 75005 Paris, France
- Sorbonne Université, CNRS, Laboratoire Interfaces et Systèmes Electrochimiques, LISE, 4 Place Jussieu, 75005 Paris, France
| | - Yanis Adjez
- Sorbonne Université, CNRS, Laboratoire Interfaces et Systèmes Electrochimiques, LISE, 4 Place Jussieu, 75005 Paris, France
| | - Yun Li
- Laboratoire de Chimie des Processus Biologiques, Collège de France, UMR 8229 CNRS, Sorbonne Université, PSL Research University, 11 Place Marcelin Berthelot, 75005 Paris, France
| | - Maria Gómez-Mingot
- Laboratoire de Chimie des Processus Biologiques, Collège de France, UMR 8229 CNRS, Sorbonne Université, PSL Research University, 11 Place Marcelin Berthelot, 75005 Paris, France
| | - Marc Fontecave
- Laboratoire de Chimie des Processus Biologiques, Collège de France, UMR 8229 CNRS, Sorbonne Université, PSL Research University, 11 Place Marcelin Berthelot, 75005 Paris, France
| | - Carlos M Sánchez-Sánchez
- Sorbonne Université, CNRS, Laboratoire Interfaces et Systèmes Electrochimiques, LISE, 4 Place Jussieu, 75005 Paris, France
| |
Collapse
|
5
|
Li J, Jin Y, Rinke P, Yang W, Golze D. Benchmark of GW Methods for Core-Level Binding Energies. J Chem Theory Comput 2022; 18:7570-7585. [PMID: 36322136 PMCID: PMC9753590 DOI: 10.1021/acs.jctc.2c00617] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The GW approximation has recently gained increasing attention as a viable method for the computation of deep core-level binding energies as measured by X-ray photoelectron spectroscopy. We present a comprehensive benchmark study of different GW methodologies (starting point optimized, partial and full eigenvalue-self-consistent, Hedin shift, and renormalized singles) for molecular inner-shell excitations. We demonstrate that all methods yield a unique solution and apply them to the CORE65 benchmark set and ethyl trifluoroacetate. Three GW schemes clearly outperform the other methods for absolute core-level energies with a mean absolute error of 0.3 eV with respect to experiment. These are partial eigenvalue self-consistency, in which the eigenvalues are only updated in the Green's function, single-shot GW calculations based on an optimized hybrid functional starting point, and a Hedin shift in the Green's function. While all methods reproduce the experimental relative binding energies well, the eigenvalue self-consistent schemes and the Hedin shift yield with mean absolute errors <0.2 eV the best results.
Collapse
Affiliation(s)
- Jiachen Li
- Department
of Chemistry, Duke University, Durham, North Carolina27708, United States
| | - Ye Jin
- Department
of Chemistry, Duke University, Durham, North Carolina27708, United States
| | - Patrick Rinke
- Department
of Applied Physics, Aalto University, Otakaari 1, FI-02150Espoo, Finland
| | - Weitao Yang
- Department
of Chemistry, Duke University, Durham, North Carolina27708, United States
| | - Dorothea Golze
- Department
of Applied Physics, Aalto University, Otakaari 1, FI-02150Espoo, Finland,Faculty
of Chemistry and Food Chemistry, Technische
Universität Dresden, 01062Dresden, Germany,
| |
Collapse
|
6
|
Multi-fluorous-included Counter Anions-based Ionic Copolymers: Synthesis and Enhanced Hydrophobic Adsorption Films on Copper Surface for Super Protection. Chem Res Chin Univ 2022. [DOI: 10.1007/s40242-022-2276-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
7
|
Zafar A, Evans T, Palgrave RG, ud-Din I. An X-ray photoelectron spectroscopy study of ionic liquids based on a bridged dicationic moiety. JOURNAL OF CHEMICAL RESEARCH 2022. [DOI: 10.1177/17475198221092966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
A series of imidazolium and pyridinium-based bridged dicationic ionic liquids have been analysed using X-ray photoelectron spectroscopy. The different electronic environments of the dications have been investigated and a robust fitting model for the carbon C1s region has also been developed. The relative positions of different C1s components and N1s of dications have been determined and their complex C1s photoemission spectra produced from both aromatic and aliphatic carbon states giving photoemission peaks in the binding energy range of 289.0–283.9 eV. A contemporary fitting approach has been applied to a different set of environments which allowing comparison of the binding energies of cationic components of imidazolium and pyridinium-based dicationic ionic liquids. The experimental stoichiometry of all the carbons and nitrogens have also been calculated from XP spectra of the dicationic ionic liquids.
Collapse
Affiliation(s)
- Anham Zafar
- Chemistry Department, University College London, London, UK
- Department of Chemistry, Quaid-i-Azam University, Islamabad, Pakistan
| | - Tim Evans
- Chemistry Department, University College London, London, UK
| | | | - Imtiaz- ud-Din
- Department of Chemistry, Quaid-i-Azam University, Islamabad, Pakistan
| |
Collapse
|
8
|
Seymour J, Gousseva E, Large A, Held G, Hein D, Wartner G, Quevedo W, Seidel R, Kolbeck C, Clarke CJ, Fogarty R, Bourne R, Bennett R, Palgrave R, Hunt PA, Lovelock KRJ. Resonant Electron Spectroscopy: Identification of Atomic Contributions to Valence States. Faraday Discuss 2022; 236:389-411. [DOI: 10.1039/d1fd00117e] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Valence electronic structure is crucial for understanding and predicting reactivity. Valence non-resonant X-ray photoelectron spectroscopy (NRXPS) provides a direct method for probing the overall valence electronic structure. However, it is...
Collapse
|
9
|
Küllmer M, Endres P, Götz S, Winter A, Schubert US, Turchanin A. Solution-Based Self-Assembly and Stability of Ruthenium(II) Tris-bipyridyl Monolayers on Gold. ACS APPLIED MATERIALS & INTERFACES 2021; 13:60544-60552. [PMID: 34878243 DOI: 10.1021/acsami.1c10989] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Ruthenium(II) polypyridyl complexes are commonly applied as photosensitizers in the fields of artificial photosynthesis and light harvesting. Their immobilization on gold surfaces is also of interest for sensing and biological applications. Here, we report the self-assembly of [Ru(dmbpy)2(dcbpy)](PF6)2 complexes on gold substrates from solution (dmbpy: 4,4'-dimethyl-2,2'-bipyridine; dcbpy: 2,2'-bipyridine-4,4'-dicarboxylic acid). Applying X-ray photoelectron spectroscopy, we demonstrate the formation of self-assembled monolayers (SAMs) of the Ru(II) complexes upon loss of counterions with carboxylate groups oriented toward the gold surface. We investigate the stability of the formed SAMs toward the substitution in solvents with competing aliphatic and aromatic thiols such as 4'-nitro[1,1'-biphenyl]-4-thiol, [1,1'-biphenyl]-4-thiol, and 1-hexadecanethiol. We show that the exchange reactions may lead to both complete replacement of the Ru(II) complexes and controlled formation of mixed SAMs. Moreover, we demonstrate that thiol-based SAMs can also be replaced completely from gold via their immersion into solutions of [Ru(dmbpy)2(dcbpy)](PF6)2, indicating a relatively high stability for the Ru(II) complex SAMs. Our findings open up a variety of opportunities for applications of carboxylate-based SAMs on gold in nanotechnology.
Collapse
Affiliation(s)
- Maria Küllmer
- Institute of Physical Chemistry, Friedrich Schiller University Jena, 07743 Jena, Germany
| | - Patrick Endres
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, 07743 Jena, Germany
| | - Stefan Götz
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, 07743 Jena, Germany
| | - Andreas Winter
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, 07743 Jena, Germany
| | - Ulrich S Schubert
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, 07743 Jena, Germany
- Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, 07743 Jena, Germany
| | - Andrey Turchanin
- Institute of Physical Chemistry, Friedrich Schiller University Jena, 07743 Jena, Germany
- Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, 07743 Jena, Germany
| |
Collapse
|
10
|
Zaki EG, Mohmed D, Hussein MF, El-Zayat MM, Soliman FS, Aman D. Assessment of polyethylene/Zn-ionic as a diesel fuel sulfur adsorbent: gamma radiation effect and response surface methodology. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:52993-53009. [PMID: 34023992 DOI: 10.1007/s11356-021-14501-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2020] [Accepted: 05/17/2021] [Indexed: 06/12/2023]
Abstract
Irradiated waste high-density polyethylene@Zn/ionic liquid novel composite well-fabricated via coacervation method was irradiated by gamma-irradiation and studied the effect of that radiation on the desulfurization process. The prepared composites were characterized by various analytical techniques as follows: X-ray diffraction (XRD), Fourier-Transform infrared (FT-IR), X-ray photoelectron spectrometer (XPS), scanning electron microscope (SEM), High Resolution Transmission Electron Microscopy (HRTEM), N2-adsorption-desorption isotherm, and thermal gravimetric analysis (TG/DTA). The adsorptive desulfurization process of benzothiophene (BT) and dibenzothiophene (DBT) which are harmful compounds in diesel model fuel was investigating using the irradiated and unirradiated composite. The results illustrated that the unirradiated and irradiated composites exhibit an adequate adsorption capacity reached (50-75 mg S/g) and (60-85 mg S/g) for BT and DBT, respectively. The adsorption process over the prepared adsorbents follows the pseudo-second-order kinetic models. The irradiated composite exhibited more adsorption capacity than the unirradiated one due to the radiation generated more surface area and created proton-bond donor sites in the composite surface, which increases the interaction between the surface and sulfur species. The adsorption capacity and adsorption percentage for irradiated and unirradiated composites towards (SCCs) were studied using response surface methodology based on the central composite design (CCD). The thermodynamic factors (∆H°, ∆G°, and ∆S°) reveal that these processes are endothermic adsorption processes. The irradiated PEt @Zn/IL was re-used without significant loss of adsorption activity. This novel irradiated PEt @Zn/IL is the first time used as an adsorbent with an advantage that includes its excellent adsorption capacity, which ensures the product will be efficient in a real process such as the petrochemical industry.
Collapse
Affiliation(s)
- Elsayed Gamal Zaki
- Egyptian Petroleum Research Institute (EPRI), Nasr City, Cairo, 11727, Egypt.
| | - Dina Mohmed
- Egyptian Petroleum Research Institute (EPRI), Nasr City, Cairo, 11727, Egypt
| | - Modather Farouk Hussein
- Chemistry department, Faculty of Science, Al-Azhar University, Assuit, Egypt
- Chemistry department, college of Science, Jouf University, Sakakah, Kingdom of Saudi Arabia
| | - Mai Mahmoud El-Zayat
- National Center for Radiation Research and Technology, Atomic Energy Authority, Nasr City, Cairo, 11787, Egypt
| | - Fathi Samir Soliman
- Egyptian Petroleum Research Institute (EPRI), Nasr City, Cairo, 11727, Egypt
- EPRI-Nanotechnology Center, Egyptian Petroleum Research Institute, Nasr City, Cairo, 11727, Egypt
| | - Delvin Aman
- Egyptian Petroleum Research Institute (EPRI), Nasr City, Cairo, 11727, Egypt.
- EPRI-Nanotechnology Center, Egyptian Petroleum Research Institute, Nasr City, Cairo, 11727, Egypt.
| |
Collapse
|
11
|
Seymour JM, Gousseva E, Large AI, Clarke CJ, Licence P, Fogarty RM, Duncan DA, Ferrer P, Venturini F, Bennett RA, Palgrave RG, Lovelock KRJ. Experimental measurement and prediction of ionic liquid ionisation energies. Phys Chem Chem Phys 2021; 23:20957-20973. [PMID: 34545382 DOI: 10.1039/d1cp02441h] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ionic liquid (IL) valence electronic structure provides key descriptors for understanding and predicting IL properties. The ionisation energies of 60 ILs are measured and the most readily ionised valence state of each IL (the highest occupied molecular orbital, HOMO) is identified using a combination of X-ray photoelectron spectroscopy (XPS) and synchrotron resonant XPS. A structurally diverse range of cations and anions were studied. The cation gave rise to the HOMO for nine of the 60 ILs presented here, meaning it is energetically more favourable to remove an electron from the cation than the anion. The influence of the cation on the anion electronic structure (and vice versa) were established; the electrostatic effects are well understood and demonstrated to be consistently predictable. We used this knowledge to make predictions of both ionisation energy and HOMO identity for a further 516 ILs, providing a very valuable dataset for benchmarking electronic structure calculations and enabling the development of models linking experimental valence electronic structure descriptors to other IL properties, e.g. electrochemical stability. Furthermore, we provide design rules for the prediction of the electronic structure of ILs.
Collapse
Affiliation(s)
- Jake M Seymour
- Department of Chemistry, University of Reading, Reading, RG6 6AD, UK.
| | | | - Alexander I Large
- Department of Chemistry, University of Reading, Reading, RG6 6AD, UK. .,Diamond Light Source, Didcot, Oxfordshire, OX11 0DE, UK
| | - Coby J Clarke
- School of Chemistry, University of Nottingham, Nottingham, NG7 2RD, UK
| | - Peter Licence
- School of Chemistry, University of Nottingham, Nottingham, NG7 2RD, UK
| | | | | | - Pilar Ferrer
- Diamond Light Source, Didcot, Oxfordshire, OX11 0DE, UK
| | | | - Roger A Bennett
- Department of Chemistry, University of Reading, Reading, RG6 6AD, UK.
| | | | | |
Collapse
|
12
|
Li X, Li Y, Wang H, Niu Z, He Y, Jin L, Wu M, Wang H, Chai L, Al-Enizi AM, Nafady A, Shaikh SF, Ma S. 3D Cationic Polymeric Network Nanotrap for Efficient Collection of Perrhenate Anion from Wastewater. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2007994. [PMID: 33749108 DOI: 10.1002/smll.202007994] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2020] [Revised: 02/18/2021] [Indexed: 06/12/2023]
Abstract
Rhenium is one of the most valuable elements found in nature, and its capture and recycle are highly desirable for resource recovery. However, the effective and efficient collection of this material from industrial waste remains quite challenging. Herein, a tetraphenylmethane-based cationic polymeric network (CPN-tpm) nanotrap is designed, synthesized, and evaluated for ReO4- recovery. 3D building units are used to construct imidazolium salt-based polymers with positive charges, which yields a record maximum uptake capacity of 1133 mg g-1 for ReO4- collection as well as fast kinetics ReO4- uptake. The sorption equilibrium is reached within 20 min and a kd value of 8.5 × 105 mL g-1 is obtained. The sorption capacity of CPN-tpm remains stable over a wide range of pH values and the removal efficiency exceeds 60% for pH levels below 2. Moreover, CPN-tpm exhibits good recyclability for at least five cycles of the sorption-desorption process. This work provides a new route for constructing a kind of new high-performance polymeric material for rhenium recovery and rhenium-contained industrial wastewater treatment.
Collapse
Affiliation(s)
- Xiaorui Li
- School of Metallurgy and Environment, Central South University, Changsha, Hunan, 410083, China
- Department of Chemistry, University of South Florida, Tampa, FL, 33620, USA
| | - Yiming Li
- Department of Chemistry, University of South Florida, Tampa, FL, 33620, USA
- College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan, 410083, China
| | - Huifang Wang
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu, 215123, China
- Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha, Hunan, 410083, China
| | - Zheng Niu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu, 215123, China
| | - Yingjie He
- School of Metallurgy and Environment, Central South University, Changsha, Hunan, 410083, China
| | - Linfeng Jin
- School of Metallurgy and Environment, Central South University, Changsha, Hunan, 410083, China
| | - Mingyang Wu
- School of Metallurgy and Environment, Central South University, Changsha, Hunan, 410083, China
| | - Haiying Wang
- School of Metallurgy and Environment, Central South University, Changsha, Hunan, 410083, China
- Water Pollution Control Technology Key Lab of Hunan Province, Changsha, 410004, China
| | - Liyuan Chai
- School of Metallurgy and Environment, Central South University, Changsha, Hunan, 410083, China
- Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha, Hunan, 410083, China
| | - Abdullah M Al-Enizi
- Department of Chemistry, Collage of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Ayman Nafady
- Department of Chemistry, Collage of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Shoyebmohamad F Shaikh
- Department of Chemistry, Collage of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Shengqian Ma
- Department of Chemistry, University of North Texas, Denton, TX, 76201, USA
| |
Collapse
|
13
|
Invernizzi R, Guerlou-Demourgues L, Weill F, Lemoine A, Dourges MA, Baraille I, Flahaut D, Olchowka J. Controlled Nanostructuration of Cobalt Oxyhydroxide Electrode Material for Hybrid Supercapacitors. MATERIALS (BASEL, SWITZERLAND) 2021; 14:2325. [PMID: 33947167 PMCID: PMC8124577 DOI: 10.3390/ma14092325] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 04/27/2021] [Accepted: 04/28/2021] [Indexed: 11/16/2022]
Abstract
Nanostructuration is one of the most promising strategies to develop performant electrode materials for energy storage devices, such as hybrid supercapacitors. In this work, we studied the influence of precipitation medium and the use of a series of 1-alkyl-3-methylimidazolium bromide ionic liquids for the nanostructuration of β(III) cobalt oxyhydroxides. Then, the effect of the nanostructuration and the impact of the different ionic liquids used during synthesis were investigated in terms of energy storage performances. First, we demonstrated that forward precipitation, in a cobalt-rich medium, leads to smaller particles with higher specific surface areas (SSA) and an enhanced mesoporosity. Introduction of ionic liquids (ILs) in the precipitation medium further strongly increased the specific surface area and the mesoporosity to achieve well-nanostructured materials with a very high SSA of 265 m2/g and porosity of 0.43 cm3/g. Additionally, we showed that ILs used as surfactant and template also functionalize the nanomaterial surface, leading to a beneficial synergy between the highly ionic conductive IL and the cobalt oxyhydroxide, which lowers the resistance charge transfer and improves the specific capacity. The nature of the ionic liquid had an important influence on the final electrochemical properties and the best performances were reached with the ionic liquid containing the longest alkyl chain.
Collapse
Affiliation(s)
- Ronan Invernizzi
- CNRS, University of Bordeaux, Bordeaux INP, ICMCB UMR CNRS #5026, F-33600 Pessac, France; (R.I.); (L.G.-D.); (F.W.)
- RS2E, Réseau Français sur le Stockage Electrochimique de l’Energie, FR CNRS #3459, CEDEX 1, F-80039 Amiens, France;
| | - Liliane Guerlou-Demourgues
- CNRS, University of Bordeaux, Bordeaux INP, ICMCB UMR CNRS #5026, F-33600 Pessac, France; (R.I.); (L.G.-D.); (F.W.)
- RS2E, Réseau Français sur le Stockage Electrochimique de l’Energie, FR CNRS #3459, CEDEX 1, F-80039 Amiens, France;
- ALISTORE-ERI European Research Institute, FR CNRS #3104, CEDEX 1, F-80039 Amiens, France
| | - François Weill
- CNRS, University of Bordeaux, Bordeaux INP, ICMCB UMR CNRS #5026, F-33600 Pessac, France; (R.I.); (L.G.-D.); (F.W.)
- RS2E, Réseau Français sur le Stockage Electrochimique de l’Energie, FR CNRS #3459, CEDEX 1, F-80039 Amiens, France;
| | - Alexia Lemoine
- CNRS/University of Pau and Pays de l’Adour/E2S UPPA, Institut des Sciences Analytiques et de Physicochimie pour l’Environnement et les Matériaux—UMR 5254, F-64000 Pau, France; (A.L.); (I.B.)
| | - Marie-Anne Dourges
- Institut des Sciences Molaires, University of Bordeaux, UMR 5255, F-33405 Talence, France;
| | - Isabelle Baraille
- CNRS/University of Pau and Pays de l’Adour/E2S UPPA, Institut des Sciences Analytiques et de Physicochimie pour l’Environnement et les Matériaux—UMR 5254, F-64000 Pau, France; (A.L.); (I.B.)
| | - Delphine Flahaut
- RS2E, Réseau Français sur le Stockage Electrochimique de l’Energie, FR CNRS #3459, CEDEX 1, F-80039 Amiens, France;
- CNRS/University of Pau and Pays de l’Adour/E2S UPPA, Institut des Sciences Analytiques et de Physicochimie pour l’Environnement et les Matériaux—UMR 5254, F-64000 Pau, France; (A.L.); (I.B.)
| | - Jacob Olchowka
- CNRS, University of Bordeaux, Bordeaux INP, ICMCB UMR CNRS #5026, F-33600 Pessac, France; (R.I.); (L.G.-D.); (F.W.)
- RS2E, Réseau Français sur le Stockage Electrochimique de l’Energie, FR CNRS #3459, CEDEX 1, F-80039 Amiens, France;
- ALISTORE-ERI European Research Institute, FR CNRS #3104, CEDEX 1, F-80039 Amiens, France
| |
Collapse
|
14
|
Jia M, Broderick A, Newberg JT. The Influence of Water Vapor on the Electrochemical Shift of an Ionic Liquid Measured by Ambient Pressure X-ray Photoelectron Spectroscopy. Chemphyschem 2021; 22:633-640. [PMID: 33534914 DOI: 10.1002/cphc.202001041] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 02/02/2021] [Indexed: 11/09/2022]
Abstract
Ionic liquids (ILs) are considered to be one of the steppingstones to fabricate next generation electrochemical devices given their unique physical and chemical properties. The addition of water to ILs significantly impact electrochemical related properties including viscosity, density, conductivity, and electrochemical window. Herein we utilize ambient pressure X-ray photoelectron spectroscopy (APXPS) to examine the impact of water on values of the electrochemical shift (S), which is determined by measuring changes in binding energy shifts as a function of an external bias. APXPS spectra of C 1s, O 1s and N 1s regions are examined for the IL 1-butyl-3-methylimidazolium acetate, [C4 mim][OAc], at the IL/gas interface as a function of both water vapor pressure and external bias. Results reveal that in the absence of water vapor there is an IL ohmic drop between the working electrode and quasi reference electrode, giving rise to chemical specific S values of less than one. Upon introducing water vapor, S values approach one as a function of increasing water vapor pressure, indicating a decrease in the IL ohmic drop as the IL/water mixture becomes more conductive and the potential drop is driven by the electric double layer at the electrode/IL interface.
Collapse
Affiliation(s)
- Meng Jia
- Department of Chemistry and Biochemistry, University of Delaware, Newark, DE, 19716, USA
| | - Alicia Broderick
- Department of Chemistry and Biochemistry, University of Delaware, Newark, DE, 19716, USA.,Present Address: U.S. Department of Homeland Security, Science and Technology Directorate's Transportation Security Laboratory, Atlantic City, NJ, 08405, USA
| | - John T Newberg
- Material Science and Technology Division, Los Alamos National Laboratory, Los Alamos, NM, 87545, USA
| |
Collapse
|
15
|
Li Wei, Wang S, Men S. Electronic Effects in the Structure of 1-Ethyl-3-Methylimidazolium Ionic Liquids. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2021. [DOI: 10.1134/s0036024421040270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
16
|
Abarca G, Gonçalves WDG, Albuquerque BL, Dupont J, Prechtl MHG, Scholten JD. Bimetallic RuPd nanoparticles in ionic liquids: selective catalysts for the hydrogenation of aromatic compounds. NEW J CHEM 2021. [DOI: 10.1039/d0nj02674c] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Bimetallic RuPd nanoparticles are effective catalysts for the hydrogenation of aromatic compounds and the activity and selectivity depend on the Ru : Pd ratio.
Collapse
Affiliation(s)
- Gabriel Abarca
- Instituto de Química, UFRGS
- Porto Alegre
- Brazil
- Universidad Bernardo O’Higgins
- Escuela de Obstetricia y Puericultura
| | | | | | | | - Martin H. G. Prechtl
- Universität zu Köln
- Department of Chemistry
- D-50939 Köln
- Germany
- Instituto Superior Técnico
| | | |
Collapse
|
17
|
Morales-Ugarte JE, Santini CC, Bouchet R, Benayad A. New Interpretation of X-ray Photoelectron Spectroscopy of Imidazolium Ionic Liquid Electrolytes Based on Ionic Transport Analyses. J Phys Chem B 2020; 124:7625-7635. [PMID: 32790393 DOI: 10.1021/acs.jpcb.0c04090] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We reported a new perspective on the correlation between the electronic structure of an ionic liquid (IL)-based electrolyte probed by X-ray photoelectron spectroscopy and the transport properties analyzed by impedance spectroscopy. We highlighted the core level chemical shifts of 1-hexyl-3-methylimidazolium (bis(trifluoromethanesulfonyl)imide) (C1C6ImTFSI), 1-hexyl-3-methylimidazolium bis(fluorosulfonyl)imide (C1C6ImFSI), and 1-hexyl-2,3-dimethylimidazolium bis(trifluoromethylsulfonyl)imide (C1C1C6ImTFSI) laden with LiTFSI salt and vinylene carbonate (VC) or fluoroethylene carbonate (FEC) with regard to the transport properties of cations and anions. We pointed out based on detailed binding energy shift analyses a clear effect of the anion on the local organization of Li+ ions. The significant peak shift in the case of C1C6ImTFSI laden with LiTFSI corroborates the formation of [Li(TFSI)2]- complexes. On the contrary, the lower amplitude of the binding energy shift of C1C6ImFSI for both anion- and cation-related peaks indicates that the electronic distribution around the cation and the anion is not affected when the LiTFSI salt is added, which plays a strong role in the ion dynamics (lower viscosity) of the electrolyte. The X-ray photoelectron spectroscopy (XPS) result supports the preponderant role of imidazolium ionic liquid based on FSI anion to form an electrolyte less prone to form ionic complexes. The methylation of the imidazolium cation contributes to the reduction of the interaction between the C1C1C6Im cation and TFSI anion, while additives VC and FEC contribute to the change of the alkyl configuration in C1C6Im cation, leading to the modification of the macroscopic properties of the ILs.
Collapse
Affiliation(s)
- J E Morales-Ugarte
- Université Grenoble Alpes, CEA-LITEN, 17 rue des Martyrs, 38054 Grenoble Cedex 9, France.,Université Grenoble Alpes, Université Savoie Mont Blanc, CNRS, Grenoble INP, LEPMI, 1130 rue de La Piscine, 38402 St. Martin d'Hères, France
| | - C C Santini
- Université Lyon, CNRS-UMR 5265, 43 Bd du 11 Novembre 1918, 69616 Villeurbanne, France
| | - R Bouchet
- Université Grenoble Alpes, Université Savoie Mont Blanc, CNRS, Grenoble INP, LEPMI, 1130 rue de La Piscine, 38402 St. Martin d'Hères, France
| | - A Benayad
- Université Grenoble Alpes, CEA-LITEN, 17 rue des Martyrs, 38054 Grenoble Cedex 9, France
| |
Collapse
|
18
|
Men S, Licence P, Luo H, Dai S. Tuning the Cation-Anion Interactions by Methylation of the Pyridinium Cation: An X-ray Photoelectron Spectroscopy Study of Picolinium Ionic Liquids. J Phys Chem B 2020; 124:6657-6663. [PMID: 32639150 DOI: 10.1021/acs.jpcb.0c05872] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
X-ray photoelectron spectroscopy is used to investigate the impact of methylation on the electronic environment of pyridinium cations. Because of the electron-donating effect of the methyl group, there is a significant increase in electron density on the cationic nitrogen. The shift of the N 1s binding energy is inversely proportional to the anion basicity. The methylation position on the electronic environment of the cationic nitrogen is investigated. The N 1s binding energy follows the trend: 1-octylpyridinium > 1-octyl-3-picolinium > 1-octyl-4-picolinium > 1-octyl-2-picolinium, which is in good agreement with the cation acidity. The increase in the inductive effect subsequently weakens the cation-anion interactions through charge transfer from the anion to the cation, causing a subtle change in the electronic environment of the anion. Such an effect is noticeably reflected in the Br 3d binding energy. It shows that the Br 3d5/2 binding energy of 1-octyl-2-picolinium bromide is 0.2 eV lower than that of 1-octylpyridinium bromide.
Collapse
Affiliation(s)
- Shuang Men
- School of Material Science and Engineering, Shenyang Ligong University, Shenyang 110159, P. R. China.,Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, United States
| | - Peter Licence
- School of Chemistry, The University of Nottingham, Nottingham NG7 2RD, U.K
| | - Huimin Luo
- Energy and Transportation Science Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, United States
| | - Sheng Dai
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, United States
| |
Collapse
|
19
|
Sieling T, Brand I. In Situ Spectroelectrochemical Investigation of Potential‐Dependent Changes in an Amphiphilic Imidazolium‐Based Ionic Liquid Film on the Au(111) Electrode Surface. ChemElectroChem 2020. [DOI: 10.1002/celc.202000385] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Thorben Sieling
- University of Oldenburg, Department of Chemistry 26111 Oldenburg Germany
| | - Izabella Brand
- University of Oldenburg, Department of Chemistry 26111 Oldenburg Germany
| |
Collapse
|
20
|
Men S, Licence P, Do-Thanh CL, Luo H, Dai S. X-ray photoelectron spectroscopy of piperidinium ionic liquids: a comparison to the charge delocalised pyridinium analogues. Phys Chem Chem Phys 2020; 22:11976-11983. [PMID: 32420557 DOI: 10.1039/d0cp01454k] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this study, nine piperidinium-based ionic liquids are analysed by X-ray photoelectron spectroscopy. The effect of alkyl substituent length and the nature of the anion on the electronic environment of the cation are investigated. The electronic environment of the hetero carbon and the cationic nitrogen is compared between two structurally similar cations, 1-octyl-1-methylpiperidinium ([C8C1Pip]+) versus 1-octylpyridinium ([C8Py]+). Due to the charge delocalisation, the hetero carbon component within [C8Py]+ is more positively charged, which exhibits much higher binding energy; whilst the cationic nitrogen component is in the similar electronic environment. The impact of the charge delocalisation on the electronic environment of the anion is also compared between [C8C1Pip]+ and [C8Py]+. It is found that for the more basic anion, the cation can significantly affect the electronic environment of the anion; for the less basic anion, such an effect concentrates on the component bearing more negative point charges.
Collapse
Affiliation(s)
- Shuang Men
- School of Material Science and Engineering, Shenyang Ligong University, Shenyang, 110159, P. R. China. and Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, 37830, USA.
| | - Peter Licence
- School of Chemistry, The University of Nottingham, Nottingham, NG7 2RD, UK
| | - Chi-Linh Do-Thanh
- Department of Chemistry, Joint Institute of Advanced Materials, University of Tennessee, Knoxville, 37996, USA
| | - Huimin Luo
- Energy and Transportation Science Division, Oak Ridge National Laboratory, Oak Ridge, 37830, USA
| | - Sheng Dai
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, 37830, USA.
| |
Collapse
|
21
|
Rui Mu, Deng A, Men S. Tribromide Ionic Liquids: Probing the Charge Distribution of the Anion by XPS. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2020. [DOI: 10.1134/s0036024420050167] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
22
|
Golze D, Keller L, Rinke P. Accurate Absolute and Relative Core-Level Binding Energies from GW. J Phys Chem Lett 2020; 11:1840-1847. [PMID: 32043890 PMCID: PMC7735733 DOI: 10.1021/acs.jpclett.9b03423] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Accepted: 02/11/2020] [Indexed: 05/13/2023]
Abstract
We present an accurate approach to compute X-ray photoelectron spectra based on the GW Green's function method that overcomes the shortcomings of common density functional theory approaches. GW has become a popular tool to compute valence excitations for a wide range of materials. However, core-level spectroscopy is thus far almost uncharted in GW. We show that single-shot perturbation calculations in the G0W0 approximation, which are routinely used for valence states, cannot be applied for core levels and suffer from an extreme, erroneous transfer of spectral weight to the satellite spectrum. The correct behavior can be restored by partial self-consistent GW schemes or by using hybrid functionals with almost 50% of exact exchange as a starting point for G0W0. We also include relativistic corrections and present a benchmark study for 65 molecular 1s excitations. Our absolute and relative GW core-level binding energies agree within 0.3 and 0.2 eV with experiment, respectively.
Collapse
Affiliation(s)
- Dorothea Golze
- Department of Applied Physics, Aalto University, Otakaari 1, FI-02150 Espoo, Finland
| | - Levi Keller
- Department of Applied Physics, Aalto University, Otakaari 1, FI-02150 Espoo, Finland
| | - Patrick Rinke
- Department of Applied Physics, Aalto University, Otakaari 1, FI-02150 Espoo, Finland
| |
Collapse
|
23
|
|
24
|
Dick EJ, Fouda AEA, Besley NA, Licence P. Probing the electronic structure of ether functionalised ionic liquids using X-ray photoelectron spectroscopy. Phys Chem Chem Phys 2020; 22:1624-1631. [PMID: 31894776 DOI: 10.1039/c9cp01297d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The charge distribution associated with individual components in functionalised ionic liquids (ILs) can be tuned by careful manipulation of the substituent groups incorporated into the ions. Here we use X-ray photoelectron spectroscopy to investigate the impact of substituent atoms on the electronic structure of similar imidazolium-based systems each paired with a common anion, [Tf2N]-. The experimental measurements revealed an unexpected variation in the charge density distribution within the IL cation when the oxygen atom in a poly-ether containing side chain is moved by just one atomic position. This surprising observation is supported by density functional theory calculations.
Collapse
Affiliation(s)
- Ejike J Dick
- School of Chemistry, The University of Nottingham, Nottingham NG7 2RD, UK. and The GSK Carbon Neutral Laboratory, The University of Nottingham Innovation Park, Triumph Road, Nottingham NG7 2TU, UK
| | - Adam E A Fouda
- School of Chemistry, The University of Nottingham, Nottingham NG7 2RD, UK.
| | - Nicholas A Besley
- School of Chemistry, The University of Nottingham, Nottingham NG7 2RD, UK.
| | - Peter Licence
- School of Chemistry, The University of Nottingham, Nottingham NG7 2RD, UK. and The GSK Carbon Neutral Laboratory, The University of Nottingham Innovation Park, Triumph Road, Nottingham NG7 2TU, UK
| |
Collapse
|
25
|
Li Wei, Shuang Men. X-ray Photoelectron Spectroscopy of 1-Butyl-2,3-Dimethylimidazolium Ionic Liquids: Charge Correction Methods and Electronic Environment of the Anion. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2020. [DOI: 10.1134/s0036024419130326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
26
|
Joly F, Simon P, Trivelli X, Arab M, Morel B, Solari PL, Paul JF, Moisy P, Volkringer C. Direct conversion of uranium dioxide UO 2 to uranium tetrafluoride UF 4 using the fluorinated ionic liquid [Bmim][PF 6]. Dalton Trans 2020; 49:274-278. [PMID: 31803888 DOI: 10.1039/c9dt04327f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The industrial fluorination of UO2 to UF4 is based on a complex process involving the manipulation of a large amount of HF, a very toxic and corrosive gas. We present here a safer way to accomplish this reaction utilizing ionic liquid [Bmim][PF6] as a unique reaction medium and fluoride source.
Collapse
Affiliation(s)
- Florian Joly
- Unité de Catalyse et Chimie du Solide (UCCS), UMR CNRS 8181, Université de Lille, ENSC-Lille, Bat. C7, Avenue Mendeleïev, 59655 Villeneuve d'Ascq, France.
| | | | | | | | | | | | | | | | | |
Collapse
|
27
|
Men S, Jin Y, Licence P. Probing the impact of the N3-substituted alkyl chain on the electronic environment of the cation and the anion for 1,3-dialkylimidazolium ionic liquids. Phys Chem Chem Phys 2020; 22:17394-17400. [DOI: 10.1039/d0cp02325f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
XPS is used to probe the impact of the N3-substituted alkyl chain on the electronic environment of the cation and the anion by comparing two types of imidazolium cations, 1-alkyl-3-butylimidazolium and 1-alkyl-3-methylimidazolium.
Collapse
Affiliation(s)
- Shuang Men
- School of Material Science and Engineering
- Shenyang Ligong University
- Shenyang
- P. R. China
- Beijing Key Laboratory of Quality Evaluation Technology for Hygiene and Safety of Plastics
| | - Yujuan Jin
- Beijing Key Laboratory of Quality Evaluation Technology for Hygiene and Safety of Plastics
- Beijing Technology and Business University
- Beijing
- P. R. China
| | - Peter Licence
- School of Chemistry
- The University of Nottingham Nottingham
- UK
| |
Collapse
|
28
|
Greco F, Shin S, Williams FJ, Heller BSJ, Maier F, Steinrück H. Potential Screening at Electrode/Ionic Liquid Interfaces from In Situ X-ray Photoelectron Spectroscopy. ChemistryOpen 2019; 8:1365-1368. [PMID: 31844602 PMCID: PMC6892450 DOI: 10.1002/open.201900211] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Indexed: 11/12/2022] Open
Abstract
A new approach to investigate potential screening at the interface of ionic liquids (ILs) and charged electrodes in a two-electrode electrochemical cell by in situ X-ray photoelectron spectroscopy has been introduced. Using identical electrodes, we deduce the potential screening at the working and the counter electrodes as a function of applied voltage from the potential change of the bulk IL, as derived from corresponding core level binding energy shifts for different IL/electrode combinations. For imidazolium-based ILs and Pt electrodes, we find a significantly larger potential screening at the anode than at the cathode, which we attribute to strong attractive interactions between the imidazolium cation and Pt. In the absence of specific ion/electrode interactions, asymmetric potential screening only occurs for ILs with different cation and anion sizes as demonstrated for an imidazolium chloride IL and Au electrodes, which we assign to the different thicknesses of the electrical double layers. Our results imply that potential screening in ILs is mainly established by a single layer of counterions at the electrode.
Collapse
Affiliation(s)
- Francesco Greco
- Lehrstuhl für Physikalische Chemie 2Friedrich-Alexander-Universität Erlangen-NürnbergEgerlandstr. 391058ErlangenGermany
| | - Sunghwan Shin
- Lehrstuhl für Physikalische Chemie 2Friedrich-Alexander-Universität Erlangen-NürnbergEgerlandstr. 391058ErlangenGermany
| | - Federico J. Williams
- Departamento de Química Inorgánica, Analítica y Química Física, Facultad de Ciencias Exactas y Naturales, INQUIMAE-CONICETUniversidad de Buenos Aires, Ciudad UniversitariaPabellón 2Buenos AiresC1428EHAArgentina
| | - Bettina S. J. Heller
- Lehrstuhl für Physikalische Chemie 2Friedrich-Alexander-Universität Erlangen-NürnbergEgerlandstr. 391058ErlangenGermany
| | - Florian Maier
- Lehrstuhl für Physikalische Chemie 2Friedrich-Alexander-Universität Erlangen-NürnbergEgerlandstr. 391058ErlangenGermany
| | - Hans‐Peter Steinrück
- Lehrstuhl für Physikalische Chemie 2Friedrich-Alexander-Universität Erlangen-NürnbergEgerlandstr. 391058ErlangenGermany
| |
Collapse
|
29
|
Sun C, Zhao W, Zhang H, Feng G. Molecular insight into structures of monocationic and dicationic ionic liquids in mica slits. Mol Phys 2019. [DOI: 10.1080/00268976.2019.1678773] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Chen Sun
- State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
| | - Wei Zhao
- State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
| | - Huanhuan Zhang
- State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
| | - Guang Feng
- State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
- Nano Interface Centre for Energy, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
| |
Collapse
|
30
|
Probing the ionic liquid/semiconductor interfaces over macroscopic distances using X-ray photoelectron spectroscopy. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2019.06.156] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
31
|
Liu Y, Chen X, Men S, Licence P, Xi F, Ren Z, Zhu W. The impact of cation acidity and alkyl substituents on the cation–anion interactions of 1-alkyl-2,3-dimethylimidazolium ionic liquids. Phys Chem Chem Phys 2019; 21:11058-11065. [DOI: 10.1039/c9cp01381d] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
XPS is used to probe the cation–anion interactions in 1-alkyl-2,3-dimethylimidazolium ionic liquids.
Collapse
Affiliation(s)
- Yanhui Liu
- School of Material Science and Engineering
- Shenyang Ligong University
- Shenyang
- P. R. China
| | - Xianze Chen
- School of Material Science and Engineering
- Shenyang Ligong University
- Shenyang
- P. R. China
| | - Shuang Men
- School of Material Science and Engineering
- Shenyang Ligong University
- Shenyang
- P. R. China
| | - Peter Licence
- School of Chemistry
- The University of Nottingham
- Nottingham
- UK
| | - Feng Xi
- School of Material Science and Engineering
- Shenyang Ligong University
- Shenyang
- P. R. China
| | - Zhen Ren
- School of Material Science and Engineering
- Shenyang Ligong University
- Shenyang
- P. R. China
| | - Weiwei Zhu
- School of Material Science and Engineering
- Shenyang Ligong University
- Shenyang
- P. R. China
| |
Collapse
|
32
|
Lee JH, Chae JS, Jeong JH, Ahn HJ, Roh KC. An ionic liquid incorporated in a quasi-solid-state electrolyte for high-temperature supercapacitor applications. Chem Commun (Camb) 2019; 55:15081-15084. [DOI: 10.1039/c9cc07784g] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An ionic liquid incorporated in a cross-linked quasi-solid-state electrolyte is prepared for high-temperature application of supercapacitors.
Collapse
Affiliation(s)
- Jeong Han Lee
- Energy and Environmental Division
- Korea Institute of Ceramic Engineering and Technology
- Gyeongsangnam-do
- Republic of Korea
- Department of Materials and Engineering
| | - Ji Su Chae
- Energy and Environmental Division
- Korea Institute of Ceramic Engineering and Technology
- Gyeongsangnam-do
- Republic of Korea
| | - Jun Hui Jeong
- Energy and Environmental Division
- Korea Institute of Ceramic Engineering and Technology
- Gyeongsangnam-do
- Republic of Korea
| | - Hyo-Jun Ahn
- Department of Materials and Engineering
- Gyeongsang National University
- Gyeongsangnam-do 52828
- Republic of Korea
| | - Kwang Chul Roh
- Energy and Environmental Division
- Korea Institute of Ceramic Engineering and Technology
- Gyeongsangnam-do
- Republic of Korea
| |
Collapse
|
33
|
Clarke CJ, Maxwell-Hogg S, Smith EF, Hawker RR, Harper JB, Licence P. Resolving X-ray photoelectron spectra of ionic liquids with difference spectroscopy. Phys Chem Chem Phys 2018; 21:114-123. [PMID: 30519695 DOI: 10.1039/c8cp06701e] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
X-ray photoelectron spectroscopy (XPS) is a powerful element-specific technique to determine the composition and chemical state of all elements in an involatile sample. However, for elements such as carbon, the wide variety of chemical states produce complex spectra that are difficult to interpret, consequently concealing important information due to the uncertainty in signal identity. Here we report a process whereby chemical modification of carbon structures with electron withdrawing groups can reveal this information, providing accurate, highly refined fitting models far more complex than previously possible. This method is demonstrated with functionalised ionic liquids bearing chlorine or trifluoromethane groups that shift electron density from targeted locations. By comparing the C 1s spectra of non-functional ionic liquids to their functional analogues, a series of difference spectra can be produced to identify exact binding energies of carbon photoemissions, which can be used to improve the C 1s peak fitting of both samples. Importantly, ionic liquids possess ideal chemical and physical properties, which enhance this methodology to enable significant progress in XPS peak fitting and data interpretation.
Collapse
Affiliation(s)
- Coby J Clarke
- School of Chemistry, The University of Nottingham, University Park, Nottingham, UK.
| | | | | | | | | | | |
Collapse
|
34
|
Shuang Men, Yujuan Jin. Rhodium Catalyst–Ionic Liquids Interaction by X-ray Photoelectron Spectroscopy Data. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2018. [DOI: 10.1134/s0036024418120361] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
35
|
Shuang Men, Yujuan Jin. X-ray Photoelectron Spectroscopy of Imidazolium-Based Zwitterions: The Intramolecular Charge-Transfer Effect. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2018. [DOI: 10.1134/s0036024418110389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
36
|
Song Y, Huo F, Jiang Y, Zhang S, Chen S. In Situ Tracking of Organic Reactions at the Vapor/Liquid Interfaces of Ionic Liquids. Chemphyschem 2018; 19:2741-2750. [PMID: 30003635 DOI: 10.1002/cphc.201800476] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Indexed: 11/07/2022]
Abstract
The molecular structures of ionic liquids at interfaces play a crucial role in determining their chemical activities in applications. In situ X-ray photoelectron spectroscopy (XPS) was used to track the evolution of X-ray irradiation-induced chemical reactions in a series of ionic liquids ([Cn mim][AuCl4 ]; n=4, 6, 8, 10) on the Si (111) single-crystal surface. Analyses of microstructure and chemical bonding based on the XPS results indicated that reactions occurred at the vapor/liquid interfaces of the ionic liquids. The time-resolved XPS spectra revealed that with increasing irradiation time, the intensity of the peak corresponding to trivalent Au anion decreased for the four ionic liquids as Au was continually reduced to a lower chemical state and finally converted to gold nanoparticles. The rate and conversion of the reaction were associated with the length of the alkyl chain of the ionic liquids cation. Molecular dynamics simulations further revealed that the alkyl chain of the cation in the ionic liquids was oriented towards the vacuum environment at the vapor/liquid interface. Our results provide a real-time atomic-scale experimental evidence of organic reactions at the vapor/liquid interfaces of ionic liquids. The findings are important for understanding the roles of ionic liquids in catalysis, separation, electrochemistry, functional materials, and so on.
Collapse
Affiliation(s)
- Yuting Song
- Beijing Key Laboratory of Ionic Liquids Clean Process, Key Laboratory of Green Process and Engineering State Key Laboratory of Multiphase Complex Systems Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China.,Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu, 610041, China.,University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Feng Huo
- Beijing Key Laboratory of Ionic Liquids Clean Process, Key Laboratory of Green Process and Engineering State Key Laboratory of Multiphase Complex Systems Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China
| | - Yi Jiang
- Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu, 610041, China
| | - Suojiang Zhang
- Beijing Key Laboratory of Ionic Liquids Clean Process, Key Laboratory of Green Process and Engineering State Key Laboratory of Multiphase Complex Systems Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China
| | - Shimou Chen
- Beijing Key Laboratory of Ionic Liquids Clean Process, Key Laboratory of Green Process and Engineering State Key Laboratory of Multiphase Complex Systems Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China
| |
Collapse
|
37
|
Shuang Men, Rong J, Zhang T, Wang X, Feng L, Liu C, Jin Y. Spectroscopic Analysis of 1-Butyl-3-methylimidazolium Ionic Liquids: Selection of the Charge Reference and the Electronic Environment. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2018. [DOI: 10.1134/s0036024418100308] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
38
|
Shuang Men, Jing Jiang. Probing the Formation of the NHC-Palladium Species in Ionic Liquids by X-ray Photoelectron Spectroscopy. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2018. [DOI: 10.1134/s0036024418080265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
39
|
Fogarty RM, Matthews RP, Ashworth CR, Brandt-Talbot A, Palgrave RG, Bourne RA, Vander Hoogerstraete T, Hunt PA, Lovelock KRJ. Experimental validation of calculated atomic charges in ionic liquids. J Chem Phys 2018; 148:193817. [DOI: 10.1063/1.5011662] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Affiliation(s)
- Richard M. Fogarty
- Department of Chemistry, Imperial College London, London, United Kingdom
| | | | - Claire R. Ashworth
- Department of Chemistry, Imperial College London, London, United Kingdom
| | | | - Robert G. Palgrave
- Department of Chemistry, University College London, London, United Kingdom
| | - Richard A. Bourne
- School of Chemical and Process Engineering and Institute of Process Research and Development, School of Chemistry, University of Leeds, Leeds, United Kingdom
| | | | - Patricia A. Hunt
- Department of Chemistry, Imperial College London, London, United Kingdom
| | | |
Collapse
|
40
|
Men S, Liu Y, Jin Y. Probing the Cellulose-Ionic Liquids Interaction by X-ray Photoelectron Spectroscopy. POLYMER SCIENCE SERIES A 2018. [DOI: 10.1134/s0965545x18030124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
41
|
|
42
|
Wang H, Wu CH, Weatherup RS, Feng B, Ye Y, Liu YS, Glans PA, Guo J, Fang HT, Salmeron MB. X-ray-Induced Fragmentation of Imidazolium-Based Ionic Liquids Studied by Soft X-ray Absorption Spectroscopy. J Phys Chem Lett 2018; 9:785-790. [PMID: 29376377 DOI: 10.1021/acs.jpclett.8b00057] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We investigated the X-ray absorption spectroscopy (XAS) fingerprint of EMImTFSI ionic liquid (IL) and its fragmentation products created by X-ray irradiation. To accomplish this, we used an open geometry where an IL droplet is directly exposed in the vacuum chamber and an enclosed geometry where the IL is confined in a cell covered by an X-ray transparent membrane. In the open geometry, the XAS signature was stable and consistent with experimental and theoretical spectra reported in the literature. In contrast, when the IL is enclosed, its XAS evolves continuously under X-ray illumination due to the accumulation of volatile fragmentation products inside the closed cell, while they evaporate in the open geometry. The changes in the XAS from the core levels of relevant elements (C, N, S, F) together with density functional theory calculations allowed us to identify the chemical nature of the fragment products and the chemical bonds most vulnerable to rupture under soft X-ray irradiation.
Collapse
Affiliation(s)
- Huixin Wang
- School of Materials Science and Engineering, Harbin Institute of Technology , Harbin 150001, China
- Materials Sciences Division, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States
| | - Cheng Hao Wu
- Materials Sciences Division, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States
- The Advanced Light Source, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States
| | - Robert S Weatherup
- Materials Sciences Division, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States
| | - Bingmei Feng
- School of Materials Science and Engineering, Harbin Institute of Technology , Harbin 150001, China
- The Advanced Light Source, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States
| | - Yifan Ye
- The Advanced Light Source, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States
| | - Yi-Sheng Liu
- The Advanced Light Source, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States
| | | | - Jinghua Guo
- The Advanced Light Source, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States
| | - Hai-Tao Fang
- School of Materials Science and Engineering, Harbin Institute of Technology , Harbin 150001, China
| | - Miquel B Salmeron
- Materials Sciences Division, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States
- Department of Materials Science and Engineering, University of California at Berkeley , Berkeley, California 94720, United States
| |
Collapse
|
43
|
Camci MT, Aydogan P, Ulgut B, Kocabas C, Suzer S. XPS enables visualization of electrode potential screening in an ionic liquid medium with temporal- and lateral-resolution. Phys Chem Chem Phys 2018; 18:28434-28440. [PMID: 27757457 DOI: 10.1039/c6cp04933h] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We present an X-ray photoelectron spectroscopic (XPS) investigation of potential screening across two gold electrodes fabricated on a porous polymer surface which is impregnated with the ionic liquid (IL) N-N-diethyl-N-methyl-N-(2-methoxyethyl)ammonium bis(trifluoromethanesulfonyl)imide [DEME-TFSI]. The IL provides a sheet of conducting layers to the insulating polymer film, and allows monitoring charging and screening dynamics at the polymer + IL/vacuum interface in a laterally resolved fashion across the electrodes. Time-resolved measurements are also implemented by recording F1s peaks of the IL, while imposing 10 mHz square-wave (SQW) pulses across the two electrodes in a source-drain geometry. Variations in the F1s binding energy reflect directly the transient local electrical potential, and allow us to visualize screening of the otherwise built-in local voltage drop on and across the metal electrodes in the range of millimeters. Accordingly, the device is partitioned into two oppositely polarized regions, each following polarization of one electrode through the IL medium. On the other extreme, upon imposing relatively fast 1 kHz SQW pulses the charge screening is prevented and the device is brought to assume a simple resistor role. A simple equivalent circuit model also reproduces the observed voltage transients qualitatively. The presented structure and variants of XPS measurements, enabling us to record voltage transients in unexpectedly large lateral distances away from the electrodes, can impact the understanding of various electrochemical concepts.
Collapse
Affiliation(s)
- M T Camci
- Department of Chemistry, Bilkent University, Ankara 06800, Turkey.
| | - P Aydogan
- Department of Chemistry, Bilkent University, Ankara 06800, Turkey.
| | - B Ulgut
- Department of Chemistry, Bilkent University, Ankara 06800, Turkey.
| | - C Kocabas
- Department of Physics, Bilkent University, Ankara 06800, Turkey
| | - S Suzer
- Department of Chemistry, Bilkent University, Ankara 06800, Turkey.
| |
Collapse
|
44
|
Fogarty R, Rowe R, Matthews RP, Clough MT, Ashworth CR, Brandt A, Corbett PJ, Palgrave RG, Smith EF, Bourne RA, Chamberlain TW, Thompson PBJ, Hunt PA, Lovelock KRJ. Atomic charges of sulfur in ionic liquids: experiments and calculations. Faraday Discuss 2018; 206:183-201. [DOI: 10.1039/c7fd00155j] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A wide variety of experimental and computational methods are used to probe sulfur atomic charges in ionic liquids.
Collapse
Affiliation(s)
| | - Rebecca Rowe
- Department of Chemistry
- Imperial College London
- UK
| | | | | | | | | | | | | | | | - Richard A. Bourne
- School of Chemical and Process Engineering
- University of Leeds
- UK
- Institute of Process Research and Development
- School of Chemistry
| | - Thomas W. Chamberlain
- Institute of Process Research and Development
- School of Chemistry
- University of Leeds
- UK
| | | | | | | |
Collapse
|
45
|
Santos AR, Hanson-Heine MWD, Besley NA, Licence P. The impact of sulfur functionalisation on nitrogen-based ionic liquid cations. Chem Commun (Camb) 2018; 54:11403-11406. [DOI: 10.1039/c8cc05515g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
XPS is used to investigate the impact of sulfur containing substituents on the electronic structure of a series of N-based cations, all with a common anion, [NTf2]−. The experimental data is complex and cannot be easily deconstructed, DFT provides critical insight into bonding and electronic structure for each system studied.
Collapse
Affiliation(s)
- Ana R. Santos
- GSK Carbon Neutral Laboratories, School of Chemistry, The University of Nottingham
- Nottingham
- UK
| | | | - Nicholas A. Besley
- GSK Carbon Neutral Laboratories, School of Chemistry, The University of Nottingham
- Nottingham
- UK
| | - Peter Licence
- GSK Carbon Neutral Laboratories, School of Chemistry, The University of Nottingham
- Nottingham
- UK
| |
Collapse
|
46
|
Dicationic Imidazolium-Based Ionic Liquid Coatings on Zirconia Surfaces: Physico-Chemical and Biological Characterization. J Funct Biomater 2017; 8:jfb8040050. [PMID: 29236088 PMCID: PMC5748557 DOI: 10.3390/jfb8040050] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Revised: 12/06/2017] [Accepted: 12/07/2017] [Indexed: 01/07/2023] Open
Abstract
In the present work, dicationic imidazolium-based ionic liquids (ILs) were investigated as multi-functional coatings on a zirconia (ZrO2) surface to prevent biofilm formation and enhance the wear performance of zirconia while maintaining the material’s compatibility with host cells. ILs containing phenylalanine and methionine were synthesized and deposited on zirconia. Intermolecular interactions driving IL deposition on zirconia were studied using X-ray photoelectron spectroscopy (XPS). Anti-biofilm activity and cell compatibility were evaluated in vitro after one and seven days, and wear performance was tested using a pin-on-disk apparatus. ILs were observed to form strong hydrogen bonds with zirconia. IL containing phenylalanine formed a stable film on the surface after one and seven days in phosphate-buffered saline (PBS) and artificial saliva and showed excellent anti-biofilm properties against Streptococcussalivarius and Streptococcussanguinis. Compatibility with gingival fibroblasts and pre-osteoblasts was maintained, and conditions for growth and differentiation were preserved. A significantly lower coefficient of friction and wear volume loss were observed for IL-coated surfaces as compared to non-coated substrates. Overall, zirconia is an emerging alternative to titanium in dental implants systems, and this study provides additional evidence of the materials’ behavior and IL coatings as a potential surface treatment technology for improvement of its properties.
Collapse
|
47
|
Polymeric ionic liquid-assembled graphene-immobilized silica composite for selective isolation of human serum albumin from human whole blood. Anal Bioanal Chem 2017; 410:573-584. [PMID: 29184996 DOI: 10.1007/s00216-017-0758-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Revised: 11/02/2017] [Accepted: 11/08/2017] [Indexed: 12/20/2022]
Abstract
Polymeric ionic liquids (PILs) with 1-vinyl-3-ethylimidazolium cations and two different anions of Br- and PF6- were assembled onto the surface of graphene (G) nanosheets. The derived two composites, i.e., PIL(Br)-G and PIL(PF6)-G, were further efficiently immobilized onto the surface of silica nanoparticles via self-assembly technique. The obtained two PIL-G/SiO2 nanocomposites exhibited diverse adsorption performances toward proteins through adjusting the anions of PILs. Electrostatic attractions between proteins and the nanocomposites dominated protein adsorption, while the presence of PF6- anions weakened electrostatic interactions and deteriorated the selective adsorption of target protein, i.e., bovine serum albumin (BSA) in this case. Specifically, PIL(Br)-G/SiO2 nanocomposite displayed high selectivity toward BSA and a high adsorption efficiency of ca. 98% was achieved for 100 mg L-1 BSA in a Britton-Robinson (B-R) buffer at pH 5. HPLC analysis demonstrated the selectivity of PIL(Br)-G/SiO2 nanocomposite toward BSA in the presence of abundant hemoglobin and cytochrome c. The practical applicability was verified by performing selective isolation of human serum albumin (HSA) from human whole blood. Graphical abstract Selective isolation of human serum albumin from blood by polymeric ionic liquid assembled graphene immobilized silica nanocomposite with tunable anions.
Collapse
|
48
|
Men S, Licence P. Probing the electronic environment of binary and ternary ionic liquid mixtures by X-ray photoelectron spectroscopy. Chem Phys Lett 2017. [DOI: 10.1016/j.cplett.2017.08.034] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
49
|
|
50
|
X-ray photoelectron spectroscopy of trihalide ionic liquids: Comparison to halide-based analogues, anion basicity and beam damage. Chem Phys Lett 2017. [DOI: 10.1016/j.cplett.2017.05.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|