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Special Issue "Ionic Liquids: New Materials for Sensors and Catalysis"

A special issue of Materials (ISSN 1996-1944).

Deadline for manuscript submissions: closed (31 August 2017)

Special Issue Editors

Guest Editor
Prof. Dr. Xiangqun Zeng

Department of Chemistry Oakland University Rochester, USA
Website | E-Mail
Interests: electrochemistry and surface chemistry, chemical sensors and biosensors, new analytical techniques, ionic liquids and conductive polymers.
Guest Editor
Prof. Dr. Abdul Rehman

Department of Chemistry, King Fahd University of Petroleum and Minerals (KFUPM), Dhahran, 31261, USA
Website | E-Mail
Interests: chemical and biochemical materials (e.g., Polymers, ionic liquids, and their composites); magnetic nanomaterials; nano electrolytes for electrochemical sensing; generation and analysis of complex real time sensor data
Guest Editor
Dr. Zhe Wang

Xavier University of Louisiana, Department of Chemistry, New Orleans, United States
Website | E-Mail
Interests: electrochemistry; analytical chemistry; electrode interface; composites

Special Issue Information

Dear Colleagues,

In this Special Issue, we would like to bring together state-of-the-art research and development that addresses the benefits and challenges of using ionic liquids as new materials for catalytic reactions, as well as new sensing materials for sensor development.

Room-temperature ionic liquids (ILs) containing organic cation or anions have been demonstrated to act as “green” reaction media for various chemical reactions. Ionic liquids have very low vapor pressure, thus allowing chemical processes to be carried out with essentially zero emission of toxic volatile organic compounds (VOCs) into the environment. Consequently, they have been considered as environmentally friendly, recyclable media for synthetic organic chemistry, separation sciences, and other chemical sciences and engineering. For example, ILs have been used as solvents for organic reactions (nucleophilic and electrophilic reactions including acid catalyzed reactions), transition metal catalyzed reactions, and biotransformations. Recent work shows ILs provide opportunities for electrocatalytic reactions. ILs could provide the benefits of increasing the solubility of reactants and allowing the ease of removing the products by distillation. Another significant area that ILs are finding great applications in is as sensing materials for gas sensor development. For gas sensing, one of the important aspects is the sampling of analyte gases. The nonvolatile nature of ionic liquids and their remarkable thermal stability make them well suited for use as sensing materials to couple with different transducers for the detection of highly toxic, flammable, and/or reactive gases since they reduce hazards, associated with flash points and flammability. The unique charge properties of ILs allow easy construction of ILs with conductive polymer composites that form robust, chemically sensitive and selective films. Gas detection technology is the key in a broad range of applications such as air quality monitoring, biomedical diagnostics, occupational health and safety, industrial process control, and counter-terrorism. ILs are the promising material for new catalytic reactions and/or sensing reactions that could enable innovative gas sensor as well as energy science technology to be developed.

In this Special Issue, we solicit review articles, original research papers, and short communications covering all aspects of the fundamentals and applications of ionic liquids in catalysis and sensors. Submissions should clearly indicate which open challenges in using ionic liquids in catalytic reactions and sensor applications the work is addressing. Authors are invited to contact the Guest Editors prior to submission if they are uncertain whether their work falls within the general scope of this Special Issue.

Prof. Dr. Xiangqun Zeng
Prof. Dr. Zhe Wang
Prof. Dr. Abdul Rehman
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Materials is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1500 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Ionic liquids
  • Catalysis
  • Sensors

Published Papers (1 paper)

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Research

Open AccessArticle Characterization and Applications of Kaolinite Robustly Grafted by an Ionic Liquid with Naphthyl Functionality
Materials 2017, 10(9), 1006; doi:10.3390/ma10091006
Received: 26 July 2017 / Revised: 23 August 2017 / Accepted: 25 August 2017 / Published: 29 August 2017
PDF Full-text (1725 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
Functionalization of the kaolinite (K) interlayer space is challenging. In this work, a new kaolinite-based nanohybridmaterial (K-NI) was successfully synthesized by grafting on the interlayer aluminol surfaces the ionic liquid, 1-(1-methylnaphthyl)-3-(2-hydroxyethyl) imidazolium chloride (NI), using a guest displacement strategy. A substantial increase of
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Functionalization of the kaolinite (K) interlayer space is challenging. In this work, a new kaolinite-based nanohybridmaterial (K-NI) was successfully synthesized by grafting on the interlayer aluminol surfaces the ionic liquid, 1-(1-methylnaphthyl)-3-(2-hydroxyethyl) imidazolium chloride (NI), using a guest displacement strategy. A substantial increase of the basal spacing (10.8 Å) was obtained. This is a grafted derivative of kaolinite possessing one of the largest d-values. Washing in water for several days and other vigorous treatments such as sonication showed a minor effect on the integrity of the material. FTIR and 13C NMR confirmed the conservation of the structure of the ionic liquid after the grafting. Thermal analysis confirmed the presence of grafted material and was used to estimate the abundance of the grafted ionic liquid (0.44 mole per mole of kaolinite structural formula, (Al2Si2O5(OH)4)). By using cyclic voltammetry, the permeability of a film of K-NI for the bulky ferricyanide ions was demonstrated. The accumulation of nitrophenolate anions was effective (maximum capacity of 190 μmol/g), but was less important than what was expected due to the steric hindrance of the bulky grafted NI. Although the presence of chloride anions reduced the adsorption capacity, the affinity of the modified kaolinite interlayer space for the nitrophenolate anions was demonstrated. Full article
(This article belongs to the Special Issue Ionic Liquids: New Materials for Sensors and Catalysis)
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