Electrochemical Methods for Water Purification, Ion Separations, and Energy Conversion

Chemical Reviews, Journal Year: 2022, Volume and Issue: 122(16), P. 13547 - 13635

Published: July 29, 2022

Agricultural development, extensive industrialization, and rapid growth of the global population have inadvertently been accompanied by environmental pollution. Water pollution is exacerbated decreasing ability traditional treatment methods to comply with tightening standards. This review provides a comprehensive description principles applications electrochemical for water purification, ion separations, energy conversion. Electrochemical attractive features such as compact size, chemical selectivity, broad applicability, reduced generation secondary waste. Perhaps greatest advantage methods, however, that they remove contaminants directly from water, while other technologies extract contaminants, which enables efficient removal trace pollutants. The begins an overview conventional drive or physical transformations via Faradaic reactions at electrodes, proceeds detailed examination two primary mechanisms are separated in nondestructive processes, namely electrokinetics electrosorption. In these sections, special attention given emerging shock electrodialysis Given importance generating clean, renewable energy, may sometimes be combined also discusses inverse conversion based on reverse electrosorption, electrowetting, electrokinetic phenomena. concludes discussion technology comparisons, remaining challenges, potential innovations field process intensification technoeconomic optimization.

Language: Английский

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Microscopic Simulations of Electrochemical Double-Layer Capacitors

Chemical Reviews, Journal Year: 2022, Volume and Issue: 122(12), P. 10860 - 10898

Published: April 7, 2022

Electrochemical double-layer capacitors (EDLCs) are devices allowing the storage or production of electricity. They function through adsorption ions from an electrolyte on high-surface-area electrodes and characterized by short charging/discharging times long cycle-life compared to batteries. Microscopic simulations now widely used characterize structural, dynamical, properties these devices, complementing electrochemical experiments in situ spectroscopic analyses. In this review, we discuss main families simulation methods that have been developed their application family EDLCs, which include nanoporous carbon electrodes. We focus organic for electricity applications as well aqueous systems context blue energy harvesting desalination. finally provide perspectives further improvement predictive power simulations, particular future with complex electrode compositions.

Language: Английский

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Freestanding Ti₃C₂T_x MXene/Prussian Blue Analogues Films with Superior Ion Uptake for Efficient Capacitive Deionization by a Dual Pseudocapacitance Effect

ACS Nano, Journal Year: 2021, Volume and Issue: 16(1), P. 1239 - 1249

Published: Dec. 23, 2021

Exploring and designing high-performance Faradaic electrode materials is of great significance to enhance the desalination performance hybrid capacitive deionization (HCDI). Herein, open freestanding films (MXene/Prussian blue analogues (PBAs), specifically, MXene/NiHCF MXene/CuHCF) were prepared by vacuum filtration a mixed solution PBAs nanoparticles Ti3C2Tx MXene dispersion directly used as HCDI electrodes. The conductive nanosheets bridge form three-dimensional (3D) network structure, which can accelerate salt ion electron diffusion/transport kinetics for HCDI. Additionally, prevent restacking nanosheets, expand their interlayer spacing, facilitate rapid diffusion storage ions. Benefiting from dual pseudocapacitance synergistic effect MXene, obtained MXene/PBAs show superior properties, with high capacity (85.1 mg g-1 film 80.4 MXene/CuHCF film) an ultrafast salt-removal rate, much higher than those other effect, adsorption Na+ ions, enhanced conductivity demonstrated through first-principles calculations. This paper offers simple convenient method design electrodes promotes development technology.

Language: Английский

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Electrified water treatment: fundamentals and roles of electrode materials

Nature Reviews Materials, Journal Year: 2023, Volume and Issue: 8(7), P. 472 - 490

Published: May 30, 2023

Language: Английский

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Separation mechanism, selectivity enhancement strategies and advanced materials for mono-/multivalent ion-selective nanofiltration membrane

Advanced Membranes, Journal Year: 2022, Volume and Issue: 2, P. 100032 - 100032

Published: Jan. 1, 2022

Mono-/multivalent ion-selective separation has become a common requirement at the water-energy nexus, including energy storage and conversion, water purification, sustainable industrial processes. In this review, we summarize theory of ion transport through membrane mechanisms selective in nanofiltration (NF) briefly. Recent advancing improving mono-/multivalent selectivity thin-film composite (TFC) NF via size sieving enhancement, electric charge property regulation co-enhancement properties are concluded. What's more, three material classes—surface assembly materials, nanomaterials biomimetic channels highlighted as candidates for preparation membranes. Lastly, design directions critical challenges developing high-selectivity membranes based on provided.

Language: Английский

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Unlocking Enhanced Capacitive Deionization of NaTi₂(PO₄)₃/Carbon Materials by the Yolk–Shell Design

Journal of the American Chemical Society, Journal Year: 2023, Volume and Issue: 145(16), P. 9242 - 9253

Published: April 14, 2023

The low salt adsorption capacities (SACs) of benchmark carbon materials (usually below 20 mg g–1) are one the most challenging issues limiting further commercial development capacitive deionization (CDI), an energetically favorable method for sustainable water desalination. Sodium superionic conductor (NASICON)-structured NaTi2(PO4)3 (NTP) materials, especially used in combination with to prepare NTP/C provide emerging options higher CDI performance but face problems poor cycling stability and dissolution active materials. In this study, we report yolk–shell nanoarchitecture NASICON-structured (denoted as ys-NTP@C) using a metal–organic framework@covalent organic polymer (MOF@COP) sacrificial template space-confined nanoreactor. As expected, ys-NTP@C exhibits good performance, including exemplary SACs maximum SAC 124.72 g–1 at 1.8 V constant-voltage mode 202.76 100 mA constant-current mode, without obvious degradation or energy consumption increase over cycles. Furthermore, X-ray diffraction study clearly structural during repeated ion intercalation/deintercalation processes, finite element simulation shows why nanostructures exhibit better than other This provides new synthetic paradigm preparing structured from MOF@COP highlights potential use nanoarchitectures electrochemical

Language: Английский

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Recent progress in metal-based composites toward adsorptive removal of phosphate: Mechanisms, behaviors, and prospects

Chemical Engineering Journal, Journal Year: 2022, Volume and Issue: 446, P. 137081 - 137081

Published: May 21, 2022

Language: Английский

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Water desalination using nanocelluloses/cellulose derivatives based membranes for sustainable future

Desalination, Journal Year: 2021, Volume and Issue: 520, P. 115359 - 115359

Published: Sept. 23, 2021

Language: Английский

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Prospects of metal recovery from wastewater and brine

Nature Water, Journal Year: 2023, Volume and Issue: 1(1), P. 37 - 46

Published: Jan. 19, 2023

Language: Английский

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Space‐Confined Metal Ion Strategy for Carbon Materials Derived from Cobalt Benzimidazole Frameworks with High Desalination Performance in Simulated Seawater

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(23)

Published: March 29, 2023

Various metal ions with different valence states (Mg2+ , Al3+ Ca2+ Ti4+ Mn2+ Fe3+ Ni2+ Zn2+ Pb2+ Ba2+ Ce4+ ) are successfully confined in quasi-microcube shaped cobalt benzimidazole frameworks using a space-confined synthesis strategy. More importantly, series of derived carbon materials that confine obtained by high-temperature pyrolysis. Interestingly, the exhibited electric double-layer and pseudocapacitance properties because presence various states. Moreover, additional within may create new phases, which can accelerate Na+ insertion/extraction thus increase electrochemical adsorption. Density functional theory results showed Ti exhibit enhanced resulting from characteristic anatase crystalline phases TiO2 . The Ti-containing have an impressive desalination capacity (62.8 mg g-1 capacitive deionization (CDI) applications high cycling stability. This work provides facile synthetic strategy for confinement metal-organic supports further development seawater CDI.

Language: Английский

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