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Showing 1 to 18 of 18 for “"Electrosorption"”.
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Electrosorption of Organic Compounds in a Flow-Through Porous Electrode
Electrosorption, the phenomenon in which the amount of material adsorbed from solution depends on the electrical potential applied to the adsorbent, is a separation process of possible commercial importance. A particularly promising application of electrosorption is for the adsorption of organics …
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Integration of redox-electrosorption and redox-electrodialysis for water remediation, waste valorization, and organic species separations
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2027-05-01
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Theoretical and experimental study of electrochemically mediated adsorption processes
Water treatment by electrosorption is a topic of increasing interest in recent years due to the high efficiency, low cost, small footprint and no secondary treatment required. Electrochemically mediated adsorption, is one of the emerging electrosorption techniques. The great advantage of this …
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Controlling kinetic branching in C0₂-to-fuels catalysis
… reactions. We elucidate the differential CO electrosorption dynamics on polycrystalline Au and Cu surfaces using temperature-dependent in-situ surface-enhanced infrared absorption spectroscopy, establishing a mechanistic basis for potential-dependent CO binding. On Au surfaces, we observe …
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Architecting an electro-chemical separation platform : from the business case to the first commercial product
Electrosorption technology is currently gaining significant tractions as a viable separation technique due to its low energy consumption, its intrinsic reversibility and its reagent free nature. As most companies thrive towards a more sustainable approach, electro-chemical based process become more …
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Removal of uranium from aqueous wastes using electrically charged carbon nanofibers
… -0.3 and -0.4 V. Decreasing pH hinders the electrosorption process while increasing it enhances the process. As expected, an increase in flow rates results in decreased removal. It was determined that cyclic loading/unloading increased fiber performance and a capacity of at least 5.45 …
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Dynamic in-Plane Potential Gradients for Actively Controlling Electrochemical Reactions: Part I. Characterization of 1- and 2-Component Alkanethiol Monolayer Gradients on Thin Gold Films. Part II. Applications of in-Plane Potential Gradients
… discussed. Electrochemical reactions other than electrosorption of alkanethiols were demonstrated with over-potential deposition of copper onto gold films. One application of these patterns is to control the movement of supermolecular objects. As a first step towards this goal, biological cells …
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A multiscale study of atomic interactions in the electrochemical double layer applied to electrocatalysis
… modification of the surface dipole by hydrogen electrosorption couples with the surface charge to make the adsorbant chemical potential pH-dependent. This observation is related to the concept of electrosorption valency. The octahedric-to-cubic nanoparticle shape transition resulting from …
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Multiscale development of electrochemical separations: from molecular design of redox-moieties to interfacial characterization and process simulation
… multiple electrochemical separations (i.e., electrosorption, electrodialysis, electrodeposition, bulk electrolysis of redox-sorbents) with a multiscale approach, spanning from the molecular design and in situ characterization of redox-sorbents up to large-scale process simulation and design …
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Investigation of surface structures at catalytically important metals by UHV - electron spectroscopic and electrochemical methods
… systems were carbon monoxide and iodine. Electrosorption of carbon monoxide on Pt(111) produced a ($\sqrt{3}\ \times$ 3)rect over-layer structure stable at room temperature which survived UHV transfer, careful LEED characterization and back immersion without changes in electrooxidation …
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A combined modeling and experimental study assessing the impact of fluid pulsation and operating schemes on charge and energy efficiency in capacitive deionization
… salt variations resulting from a combination of electrosorption, leakage current, and immobile surface charge. Compared to traditional continuous-flow operation, simulation results show that charge efficiency increases up to 23% in the pulse-flow operation at a current density up to 20 A/m2, …
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Block Copolymer Derived Porous Carbon Fiber for Energy and Environmental Science
… such as salts and pollutants. Deionization or electrosorption is an electrochemical method for water purification via ion removal. I employed the PCFs as an electrode for deionization because of their high surface area and tunable pore size. Important for deionization, the adsorption isotherms …
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Redox-active materials for electrochemically-mediated separations
… for imparting specific functionalities to electrosorption processes are discussed. Redox-active composite materials have been developed from four different classes of electroactive species in order to enable redox-mediated ion detection and removal in water, with designed controllability …
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Thermodynamic and kinetic studies of galena in the presence and absence of potassium ethyl xanthate
… value predicted by bulk thermodynamics with the electrosorption of OH⁻ and the formation of a metal-deficient sulfide and a surface lead oxide. When oxidation becomes extensive enough, bulk products, Sº and PbO, begin to nucleate. Thiosulfate is detected at pH 9.2, but only becomes significant at …
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Harnessing redox electro-sorbents and reactive separations for efficient PFAS remediation in water systems
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-02-04 without embargo terms
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Selective Ion Separations Using Shock Electrodialysis
… processes, namely electrokinetics and electrosorption, with special attention given to emerging methods such as shock ED. The second major thrust is the design of processes and operating conditions to demonstrate the broad applicability of shock ED for selective ion removal from …
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The Electrochemical Nature of Non-Faradaic Catalysis at Interfaces
… intermediates and transition states (i.e., the electrosorption valencies). This partial charge transfer endows non-faradaic elementary reactions with electrochemical character, and augments the integer charge equivalents transferred in faradaic elementary reactions. In Chapter 5, we build upon …
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Development of a Predictive and Mechanistic Model for Capacitive Deionization
The objective of this research was to develop a mechanistic and predictive model for capacitive deionization (CDI). The commonly-known Gouy Chapman Stern (GCS) model was modified to account for finite ion size and pore geometry by including the Carnahan-Starling (CS) equation of state and …