Structurally and chemically engineered graphene for capacitive deionization

Chang, Liang; Fei, Yuhuan; Hu, Yun Hang

doi:10.1039/d0ta10087k

Cited by 47 publications

(15 citation statements)

References 219 publications

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“…194 The composite material formed by the electrode material with pseudocapacitance properties and graphene realized coordinated ion storage via electric double layers (EDL) and Faraday redox reaction (continuous change of oxidation state or change of intercalation effect), and enhanced the seawater desalination capacity of CDI. 198,199 MoS 2 has high pseudocapacitance performance. The composite material was formed by mixing with rGO, and the fast faradaic charge transfer kinetics of its hybrid structure at the interface promoted the capacitive adsorption performance of the composite material making it a potential CDI electrode material 200,201 (Fig.…”

Section: D Heterostructure Electrode Materialsmentioning

confidence: 99%

Dimensional optimization enables high-performance capacitive deionization

et al. 2022

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Section: D Heterostructure Electrode Materialsmentioning

confidence: 99%

Dimensional optimization enables high-performance capacitive deionization

et al. 2022

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“…Capacitive deionization (CDI), also denoted as electrosorption and electrochemical demineralization, is an energy-efficient, cost-effective, and environment-friendly technology for water purification. 74,75 The electrodes can capture heavy metal ions from water under an external electrical potential and readily release the ions by reversing the electrode polarity for regeneration. Conventional electrode materials (including carbon aerogels, mesoporous carbon, activated carbon, and CNTs as well as their derivatives and composites) have shown the ability to remove heavy metals, such as Cr( vi ), Cr( iii ), Cu( ii ), and As( v ), with the maximum adsorption capacity ranging from 24.6 to 100 mg g −1 .…”

Section: Adsorbents For Heavy Metal Removalmentioning

confidence: 99%

Design, synthesis, and performance of adsorbents for heavy metal removal from wastewater: a review

Fei

2022

J. Mater. Chem. A

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“…Xu, Zhang, et al (2020) summarized recently reported nitrogen‐doped carbons and impact of structural and compositional characteristics on the salt removal performance. Furthermore, Chang et al (2020) focused on graphene‐based materials, and effect of various properties of the materials on CDI performance (Chang et al, 2021). Zhang and Kong (2020) reviewed graphene‐based and intercalation materials for capacitive deionization and highlighted the challenges and research trends.…”

Section: Introductionmentioning

confidence: 99%

Recent progress in materials and architectures for capacitive deionization: A comprehensive review

Datar

Mane

Jha

2022

Water Environment Research

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Capacitive deionization is an emerging and rapidly developing electrochemical technique for water desalination across the globe with exponential growth in publications. There are various architectures and materials being explored to obtain utmost electrosorption performance. The symmetric architectures consist of the same material on both electrodes, while asymmetric architectures have electrodes loaded with different materials. Asymmetric architectures possess higher electrosorption performance as compared with that of symmetric architectures owing to the inclusion of either faradaic materials, redox‐active electrolytes, or ion specific pre‐intercalation material. With the materials perspective, faradaic materials have higher electrosorption performance than carbon‐based materials owing to the occurrence of faradaic reactions for electrosorption. Moreover, the architecture and material may be tailored in order to obtain desired selectivity of the target component and heavy metal present in feed water. In this review, we describe recent developments in architectures and materials for capacitive deionization and summarize the characteristics and salt removal performances. Further, we discuss recently reported architectures and materials for the removal of heavy metals and radioactive materials. The factors that affect the electrosorption performance including the synthesis procedure for electrode materials, incorporation of additives, operational modes, and organic foulants are further illustrated. This review concludes with several perspectives to provide directions for further development in the subject of capacitive deionization. Practitioner Points Capacitive deionization (CDI) is a rapidly developing electrochemical water desalination technique with exponential growth in publications. Faradaic materials have higher salt removal capacity (SAC) because of reversible redox reactions or ion‐intercalation processes. Combination of CDI with other techniques exhibits improved selectivity and removal of heavy metals. Operational parameters and materials properties affect SAC. In future, comprehensive experimentation is needed to have better understanding of the performance of CDI architectures and materials.

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Structurally and chemically engineered graphene for capacitive deionization

Abstract: The structurally and chemically engineered graphenes have promoted the increase of the electrosorption capacity from 1.85 to ∼150 mg g−1.

Cited by 47 publications

References 219 publications

Dimensional optimization enables high-performance capacitive deionization

Dimensional optimization enables high-performance capacitive deionization

Design, synthesis, and performance of adsorbents for heavy metal removal from wastewater: a review

Recent progress in materials and architectures for capacitive deionization: A comprehensive review

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