Electrically Controlled Anion Exchange Based on a Polypyrrole/Carbon Cloth Composite for the Removal of Perfluorooctanoic Acid

Tian, Yuhao; Xing, Jianyu; Huyan, Chenxi; Zhu, Chengzhou; Du, Dan; Zhu, Wenlei; Lin, Yuehe; Chowdhury, Indranil

doi:10.1021/acsestwater.1c00239

Cited by 13 publications

(5 citation statements)

References 53 publications

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“…The Sauerbery model was adapted to calculate the mass change of the PPy-coated sensor: , normalΔ m = prefix− C normalΔ f n n where Δ m is the deposited mass, Δ f n is the shift in the overtone frequency, n is overtone number, which is 3 in our experiments, and C is the crystal constant (17.7 ng/Hz cm 2 for a 5 MHz crystal).…”

Section: Methodsmentioning

confidence: 99%

Electrically Controlled Adsorptive Membranes with Tunable Affinity for Selective Chromium (VI) Separation from Water

Liu,

An,

Cui

et al. 2023

Environ. Sci. Technol.

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Section: Methodsmentioning

confidence: 99%

Electrically Controlled Adsorptive Membranes with Tunable Affinity for Selective Chromium (VI) Separation from Water

Liu,

An,

Cui

et al. 2023

Environ. Sci. Technol.

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“…[123][124][125][126][127] The switching between oxidation and reduction states in a conducting polymer realizes the adsorption/desorption of ions. [128] The conversion reaction mechanism involves chemical transformation to form a new compound. [34,109] So far, conversion electrode materials for CDI mainly involve Ag/AgCl and Bi/BiOCl (Figure 12C).…”

Section: Principle Of Faradaic Ion Removalmentioning

confidence: 99%

“…[ 123–127 ] The switching between oxidation and reduction states in a conducting polymer realizes the adsorption/desorption of ions. [ 128 ]…”

Section: Mechanisms Of Electrocapacitive Deionizationmentioning

confidence: 99%

Electrocapacitive Deionization: Mechanisms, Electrodes, and Cell Designs

Sun

Tebyetekerwa

Wang

et al. 2023

Adv Funct Materials

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freshwater storage. [6,7] Figure 1 shows the annual average monthly blue water (fresh surface water and groundwater) scarcity.Regions like Australia, central America, North China, and North Africa face the highest freshwater scarcity. Two-thirds of the global population suffers from severe freshwater scarcity at least 1 month of the year, and half a billion people worldwide face severe freshwater scarcity all year around. [8] This issue will intensify in the future due to climate change and evergrowing water consumption.The earth's climate and the terrestrial water cycle have a close and complex relationship. [9] Climate change is causing parts of the water cycle to speed up as warming temperatures increase the water evaporation rate. Scientific evidence shows that global warming is now unequivocal. [10] Greenhouse gas emissions have steeply increased, directly affecting terrestrial water budgets. For example, water decreases have already been observed in western Africa, southwestern Australia, the Yellow River basin in China, and the Pacific Northwest of the United States of America. Such decreases affect freshwater availability directly. [8,11] In addition to the negative effects of climate change on freshwater access, the higher water consumption of our world population and economic activities are causing great additional freshwater stress. For example, agriculture consumes 50-60%, industries use 5-10%, and 10-20% is used for urban purposes. [12] Further, many of these activities may lead to polluted water, decreasing the available clean and freshwater. For these reasons, the United Nations declared freshwater as one of the many global challenges that need immediate action for sustainable development. [13] Depending on the total mass of dissolved solids in water, natural water is classified into brine water (>50 g L −1 ), saline water (30-50 g L −1 ), brackish water (0.5-30 g L −1 ), and freshwater (0-0.5 g L −1 ). [14] According to the World Health Organization, drinkable water should contain <0.25 g L −1 of salt, and the limitation on agriculture irrigation is 2 g L −1 . [15,16] There is a need to obtain freshwater by leveraging the tremendous amount of non-fresh water that can be made useable. This can be done by extracting undesirable ions from existing water in a desalination process. This process needs to be energy-efficient and cheap for sustainability and affordability. Water desalination is a promising and practical approach to maintaining an adequate potable water supply. [17,18] Capacitive deionization (CDI) is burgeoning as a cost-effective and energy-efficient

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“…Redox-responsive homopolymers have gained attention in electrochemical separation owing to their simple yet robust polymer structures consisting of repetitive single redox-responsive monomer units. Free radical polymerization and electropolymerization have been widely used for the synthesis of redox-active polymers for electrochemical separation due to their facile synthesis. ,, In addition, the reversible addition–fragmentation chain transfer (RAFT) method is frequently employed as a polymerization technique to precisely control the molecular weight distribution of polymers. ,, Redox-active homopolymers can be classified into two categories based on the arrangement of the redox-active units within their chemical structures, as depicted in Figure : (i) incorporation of the redox-active center into the polymer backbone ,− and (ii) attachment of the redox-active unit as a pendant group. ,,,,,,− …”

Section: Achieving Selectivity In Redox-mediated Electrosorption: Tra...mentioning

confidence: 99%

Molecularly Selective Polymer Interfaces for Electrochemical Separations

Kim,

Oh,

Knust

et al. 2023

Langmuir

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The molecular design of polymer interfaces has been key for advancing electrochemical separation processes. Precise control of molecular interactions at electrochemical interfaces has enabled the removal or recovery of charged species with enhanced selectivity, capacity, and stability. In this Perspective, we provide an overview of recent developments in polymer interfaces applied to liquid-phase electrochemical separations, with a focus on their role as electrosorbents as well as membranes in electrodialysis systems. In particular, we delve into both the single-site and macromolecular design of redox polymers and their use in heterogeneous electrochemical separation platforms. We highlight the significance of incorporating both redox-active and non-redox-active moieties to tune binding toward ever more challenging separations, including structurally similar species and even isomers. Furthermore, we discuss recent advances in the development of selective ion-exchange membranes for electrodialysis and the critical need to control the physicochemical properties of the polymer. Finally, we share perspectives on the challenges and opportunities in electrochemical separations, ranging from the need for a comprehensive understanding of binding mechanisms to the continued innovation of electrochemical architectures for polymer electrodes.

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Electrically Controlled Anion Exchange Based on a Polypyrrole/Carbon Cloth Composite for the Removal of Perfluorooctanoic Acid

Cited by 13 publications

References 53 publications

Electrically Controlled Adsorptive Membranes with Tunable Affinity for Selective Chromium (VI) Separation from Water

Electrically Controlled Adsorptive Membranes with Tunable Affinity for Selective Chromium (VI) Separation from Water

Electrocapacitive Deionization: Mechanisms, Electrodes, and Cell Designs

Molecularly Selective Polymer Interfaces for Electrochemical Separations

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