Deionization utilizing reduced graphene oxide-titanium dioxide nanotubes composite for the removal of Pb2+ and Cu2+

Bautista-Patacsil, Liza; Lazarte, John Paolo L.; Dipasupil, Regine Clarisse; Pasco, Gweneth Ysabelle S.; Eusebio, Ramon Christian; Orbecido, Aileen H.; Doong, Ruey‐an

doi:10.1016/j.jece.2019.103063

Cited by 27 publications

(9 citation statements)

References 34 publications

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“…87 TiO 2 nanotubes were also exploited to modify graphene. 88 The TiO 2 nanotube/rGO composite acquired a large surface area of 511 m 2 g −1 with a mesoporous structure and strong electrical double layer behavior, leading to the electrosorption capacities of 253.2 mg g −1 for Cu( ii ) and 241.6 mg g −1 for Pb( ii ). The MoS 2 /graphene composite also exhibited good performance for CDI, which could eliminate 92.3% of Cu( ii ) and 91.3% of Pb( ii ) from low concentration solutions (17.9 mg L −1 copper and 99.4 mg L −1 lead, respectively).…”

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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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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“…The SAC for Cu 2+ ions obtained was 18.1 mg/g with desorption efficiency up to 90%. Further, Bautista‐Patacsil et al (2020) made a composite of reduced graphene oxide and titanate nanotubes (TNTs) at 3:1 mass ratio. TNTs possess high conductivity, good ion‐exchange property, and high specific area due to mesoporous characteristic.…”

Section: Methodsmentioning

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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“…[123] Apart from Cu 2+ ions, Pb 2+ ions are also a significant source of pollution in water and lead to high toxicity and bioaccumulation. [199,200] These heavy metal ions are released into water bodies as a contribution from mining industries, battery manufacture, and historically, gasoline. [194] Various adsorbents have been proven to be effective in removing heavy metal ions [201] and among these, surface functionalized Ti 3 C 2 T x MXenes have been reported to show improved adsorptive properties.…”

Section: Mxenes As Adsorbentsmentioning

confidence: 99%

Surface Functionalized MXenes for Wastewater Treatment—A Comprehensive Review

et al. 2022

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Over 80% of wastewater worldwide is released into the environment without proper treatment. Whilst environmental pollution continues to intensify due to the increase in the number of polluting industries, conventional techniques employed to clean the environment are poorly effective and are expensive. MXenes are a new class of 2D materials that have received a lot of attention for an extensive range of applications due to their tuneable interlayer spacing and tailorable surface chemistry. Several MXene‐based nanomaterials with remarkable properties have been proposed, synthesized, and used in environmental remediation applications. In this work, a comprehensive review of the state‐of‐the‐art research progress on the promising potential of surface functionalized MXenes as photocatalysts, adsorbents, and membranes for wastewater treatment is presented. The sources, composition, and effects of wastewater on human health and the environment are displayed. Furthermore, the synthesis, surface functionalization, and characterization techniques of merit used in the study of MXenes are discussed, detailing the effects of a range of factors (e.g., PH, temperature, precursor, etc.) on the synthesis, surface functionalization, and performance of the resulting MXenes. Finally, the limits of MXenes and MXene‐based materials as well as their potential future research directions, especially for wastewater treatment applications are highlighted.

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Deionization utilizing reduced graphene oxide-titanium dioxide nanotubes composite for the removal of Pb2+ and Cu2+

Cited by 27 publications

References 34 publications

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

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

Surface Functionalized MXenes for Wastewater Treatment—A Comprehensive Review

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