Ionic Liquid Electrochemical Gas Sensor
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Ionic Liquid Electrochemical Gas Sensor
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Author :
language : en
Publisher:
Release Date : 2019
Ionic Liquid Electrochemical Gas Sensor written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with Air pollution. (TD883) categories.
There are increasing environmental concerns and workplace safety issues because of the gas emissions and air pollutions from industrial waste-gas as well as accidental gas leak from the production and gathering pipelines. Industrial companies are using various types of gas sensor as they need to prevent gas leak and gas explosion incidents. To fully perform the demanded assignment, a sensor must function in a real-time continuous mode and should exhibit excellent sensing sensitivity, stability, selectivity. On top of these features, a sensor also has to respond to environmental variation promptly. Of course, low power consumption and low cost are additional characteristics that favor companies. Current prevailing chemical sensors are categorized as seven types: optical chemical sensor, electric chemical sensor, mass sensitive chemical sensor, magnetic chemical sensor, thermometric chemical sensor, radiation chemical sensor, and electrochemical sensor. Optical chemical sensors are giving very accurate sensing signals but are very expensive. Electric chemical sensors are having low detection limits and thus are most commonly used in industries, but they are experiencing low sensitivity problems. Mass sensitive chemical sensors are having excellent sensitivity, but their problem is low selectivity. Magnetic chemical sensors are low cost and non-invasive sensing technologies, but they also have an issue of low sensitivity, not to mention that they are usually in large sizes and very difficult to be miniaturized. Thermometric chemical sensors exhibit excellent sensitivity, but they have narrow sensing dynamic range so that interferential gases often times will cause false alarms. Radiation chemical sensors have good sensitivity and selectivity, but their applications are limited. Electrochemical sensors have excellent sensing response time, good sensitivity and selectivity, and are low cost and low power consumption devices. Problems for traditional electrochemical sensors come from the solvent evaporation as well as the fact that their functions are temperature and moisture dependent. Therefore, my research work is focused on the use of ionic liquid as the electrolyte to replace traditional aqueous and non-aqueous organic solvents with the new analytical methods development and characterizations. To minimize false or interferential sensing signals, we proposed an idea of applying sensor arrays to conduct cross sensor validations. Starting from single gas sensing towards the detection of multiple gases. The single gas detections and characterizations were rooted from previous publications in the lab, but we also performed the stability and sensitivity study on oxygen sensing at a relative long-term and did a systematical characterization for the ionic liquid and electrode interfacial relaxation process with and without an applied potential. Besides, we selected hydrogen as a reference gas to process both qualitative and quantitative analyses, in single gas condition as well as multiple gases conditions.
A Fundamental And Applied Study Of Ionic Liquid Based Electrochemical Gas Sensors
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Author :
language : en
Publisher:
Release Date : 2017
A Fundamental And Applied Study Of Ionic Liquid Based Electrochemical Gas Sensors written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017 with Detectors categories.
This dissertation research is mainly focused on the fundamental studies of electrochemical redox behavior of environmental pollution gases in ionic liquid (IL) and the characterization of them using IL as electrolyte for electrochemical gas sensors development. Two gases were investigated: sulfur dioxide (SO2) and nitrogen dioxide (NO2). In addition to the introduction and experimental chapters, this dissertation includes four chapters based on the analyte gases. The electrochemical redox behavior of SO2 gas was studied in three different ILs on three different working electrode (WE) materials. The electrochemical experiment data shows that SO2 can be reduced in ILs to produce SO2− ̇radicals and these SO2− ̇ radicals have multiple electrochemical oxidation passways. The electrochemical quartz crystal microbalance (EQCM) technique which is capable of determining the mass/charge ratio of an electrochemical reaction taking place on the electrode surface was used to support the SO2 redox mechanism hypothesis. Based on the SO2 mechanism study, we also characterized the SO2 detection with different electrochemical methods, including cyclic voltammetry (CV), differential pulse voltammetry (DPV), and chronoamperometry (CA) which all showed very good sensitivity. The IL-based SO2 sensor also displayed an excellent selectivity and stability toward SO2 detection under ambient conditions. The electrochemical redox behavior of NO2 in IL was also studied. The CV data showed that the NO2 can be reduced in ILs to produce NO2− ions which can be absorbed on the electrode surface. The absorptionstep has been proven to be able to terminate other redox processes on the electrode surface by using O2 gas as the mediator. This absorption is not only good for NO2 gas detection but also beneficial for NO2 capture and NO2 elimination for auto industry lean-burn engine development. The NO2 detection with IL used as electrolyte was also explored with two different mathematical methods for the sensitivity characterization. However, there are many challenges involved in the IL-based electrochemical gas sensor development. The most important one is the accuracy of the potential applied on the WE which is related to the reference electrode (RE) stability. Thus, the development of a new type of polymer based RE for IL electrolyte was also explored. A very good potential stability was achieved with polyaniline (PANI) and polypyrrole (PPy) coated electrodes. In summary, this dissertation work explored the electrochemical redox properties of different gases in ILs and a new type of electrochemical gas sensors based on the IL electrolyte had been developed and characterized. The feasibility of a polymer-based electrode to act as the RE in IL-based electrochemical system was also covered.
Ionic Liquid Devices
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Author : Ali Eftekhari
language : en
Publisher: Royal Society of Chemistry
Release Date : 2017-09-14
Ionic Liquid Devices written by Ali Eftekhari and has been published by Royal Society of Chemistry this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-09-14 with Technology & Engineering categories.
Ionic liquids are attractive because they offer versatility in the design of organic salts. As ion-rich media, ionic liquids can control the systems properties by tuning the size, charge, and shape of the composing ions. Whilst the focus has mainly been on the potential applications of ionic liquids as solvents, they also provide innovative opportunities for designing new systems and devices. Limitations from the high viscosity and expensive purification of the ionic liquids are also not a barrier for applications as devices. Written by leading authors, Ionic Liquid Devices introduces the innovative applications of ionic liquids. Whilst the first chapters focus on their characterization, which can be difficult in some instances, the rest of the book demonstrates how ionic liquids can play substantial roles in quite different systems from sensors and actuators to biomedical applications. The book provides a comprehensive resource aimed at researchers and students in materials science, polymer science, chemistry and physics interested in the materials and inspire the discovery of new applications of ionic liquids in smart devices.
Chemical Sensors
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Author : Ghenadii Korotcenkov
language : en
Publisher: Momentum Press
Release Date : 2011-07-15
Chemical Sensors written by Ghenadii Korotcenkov and has been published by Momentum Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-07-15 with Technology & Engineering categories.
Chemical sensors are integral to the automation of myriad industrial processes, as well as everyday monitoring of such activities as public safety, engine performance, medical therapeutics, and many more. This massive reference work will cover all major categories of chemical sensor materials and devices, and their general functional usage...from monitoring and analyzing gases, to analyzing liquids and compounds of all kinds. This is THE reference work on sensors used for chemical detection and analysis. In this fifth volume will be found comprehensive coverage on electrochemical gas sensors, zirconia-based solid electrolyte based gas sensors, electrochemical sensors for liquid environments, micro-fluidic chip platforms, optical- and fiber-optical sensor technologies, and new developments in chemoluminescence chemical sensors.
Sulfur Dioxide Sensors
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Author : Loveleen Kaur Gulati
language : en
Publisher: Materials Research Forum LLC
Release Date : 2021-03-08
Sulfur Dioxide Sensors written by Loveleen Kaur Gulati and has been published by Materials Research Forum LLC this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-03-08 with Technology & Engineering categories.
Recent progress on the sensing and monitoring of sulfur dioxide in the environment is presented. The sensing materials covered include potentiometric gas sensors, amperometric sensors, optical sensors involving colorimetric and fluorescence changes, sensors based on ionic liquids, semiconducting metal-oxide sensors, photoacoustic detectors and biosensors. Keywords: Sulfur Dioxide Toxicity, Environmental Effects of SO2, Health Effects of SO2, Potentiometric Gas Sensing, Amperometric Gas Sensing, Optical Gas Sensing, Colorimetric Gas Sensing, Fluorescence-based Gas Sensing, Ionic Liquids for SO2 Sensing, Semiconducting Metal-Oxides for SO2 Detection, Photoacoustic Gas Detectors, Biosensors for SO2 Monitoring.
Advanced Applications Of Ionic Liquids
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Author : Jamal Akhter Siddique
language : en
Publisher: Elsevier
Release Date : 2022-11-02
Advanced Applications Of Ionic Liquids written by Jamal Akhter Siddique and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-11-02 with Science categories.
Advanced Applications of Ionic Liquids discusses the intersection of nanotechnology with ionic liquids (ILs) and materials, along with opportunities for advanced engineering applications in various research fields. Novel materials at nano scales with ILs creates an upsurge in the thermal and electrochemical constancy of the nano scale particles, making them ideal for industrial applications. The implementation of ILs at nano scale includes an interaction of constituents, which is beneficial for electron transfer reactions. These new composites can be implemented as sensors, electronics, catalysts and photonics. Including ILs in polymer composites enhance electrochemical consistency, govern particle size, upsurge conductivity, reduce toxicity, and more. This book is a comprehensive reference for researchers working with IL based technologies for environmental and energy applications. Covers all industrial aspects and advanced applications of ionic liquids (ILs) Discusses the advanced applications of ILs across multiple fields, including industrial chemistry and chemical engineering Includes a discussion of the use of ionic liquids in functional polymers, with applications for catalysis, energy conservation, sensors, and more
Analytical Applications Of Ionic Liquids
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Author : Mihkel Koel
language : en
Publisher: World Scientific
Release Date : 2016-10-11
Analytical Applications Of Ionic Liquids written by Mihkel Koel and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-10-11 with Science categories.
Analytical Applications of Ionic Liquids reviews the current research in analytic chemistry, covering subjects as diverse as separation science, chromatography, spectroscopy and analytical electrochemistry.As scientific developments have moved into the 21st century, they have increasingly had to take into account the effects on the environment, both locally and globally. Because of this, the search for applications of ionic liquids is growing in every area of analytical chemistry. Here, material is presented by specialists, giving a critical overview of the current literature surrounding this increasingly prominent topic. Analysis is carried out on latest achievements and applications, followed by critical discussion of possible future developments.As well as stimulating further research among established analytical chemists, this book can also be used for undergraduate and graduate courses on chemistry and chemical technology.
Ionic Liquids In Chemical Analysis
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Author : Mihkel Koel
language : en
Publisher: CRC Press
Release Date : 2008-10-09
Ionic Liquids In Chemical Analysis written by Mihkel Koel and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-10-09 with Science categories.
An Overview of a Rapidly Expanding Area in Chemistry Exploring the future in chemical analysis research, Ionic Liquids in Chemical Analysis focuses on materials that promise entirely new ways to perform solution chemistry. It provides a broad overview of the applications of ionic liquids in various areas of analytical chemistry, in
Ionic Liquid Based Technologies For Environmental Sustainability
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Author : Mohammad Jawaid
language : en
Publisher: Elsevier
Release Date : 2021-12-04
Ionic Liquid Based Technologies For Environmental Sustainability written by Mohammad Jawaid and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-12-04 with Science categories.
Ionic Liquid-based Technologies for Environmental Sustainability explores the range of sustainable and green applications of IL materials achieved in recent years, such as gas solubility, biomass pre-treatment, bio-catalysis, energy storage, gas separation and purification technologies. The book also provides a reference material for future research in IL-based technologies for environmental and energy applications, which are much in-demand due to sustainable, reusable and eco-friendly methods for highly innovative and applied materials. Written by eminent scholars and leading experts from around the world, the book aims to cover the synthesis and characterization of broad range of ionic liquids and their sustainable applications. Chapters provide cutting-edge research with state-of-the-art developments, including the use of IL-based materials for the removal of pharmaceuticals, dyes and value-added metals. Describes the fundamentals and major applications of ionic liquid materials Covers up-to-date developments in novel applications of IL materials Provides practical tips to aid researchers who work on ionic liquid applications
Industrial Applications Of Green Solvents
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Author : Inamuddin
language : en
Publisher: Materials Research Forum LLC
Release Date : 2019-08-20
Industrial Applications Of Green Solvents written by Inamuddin and has been published by Materials Research Forum LLC this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-08-20 with Technology & Engineering categories.
The book explores industrial applications of green solvents in industrially important areas such as oil extraction, sensors and biosensors, CO2 capture, lignocellulosic biomass utilization, bio-based chemicals and their application in catalysis, electrochemical devices, purification of pharmaceuticals, organic synthesis and transformations, bio-lubricant additives, aluminum and aluminum-alloy production. The solvents covered include water, ionic liquids, supercritical carbon dioxide and glycerol.