Capacitive deionization of seawater effected by nano Ag and Ag@C on graphene

Cai, Pingwei; Su, Chin-Ru; Chang, Wei-Tse; Chang, Feng-Cheng; Peng, Chao-Chung; Sun, I.-W.; Wei, Yu‐Ling; Jou, Chih-Ju G.; Wang, H. Paul

doi:10.1016/j.marpolbul.2014.05.020

Cited by 26 publications

(2 citation statements)

References 33 publications

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“…In the high frequency region, the diameter of the semicircle corresponds to the charge transfer resistance (Rct), which can be measured by the impedance axis. 62 As shown in Figure 5c, the Gr−Cs−Mn 3 O 4 electrode has a lower transmission resistance than the Gr, suggesting the decreased limitation of the electrochemical reaction. At the low-frequency region, a more vertical straight line is evident for the Gr−Cs−Mn 3 O 4 electrode than for the Gr sample, which indicates faster ion diffusion behavior of the Gr−Cs−Mn 3 O 4 electrode.…”

Section: ■ Results and Discussionmentioning

confidence: 88%

“…The Rs value of Gr–Cs–Mn 3 O 4 is smaller than that of Gr, which makes a negligible contribution to the overall electrode resistance. In the high frequency region, the diameter of the semicircle corresponds to the charge transfer resistance (Rct), which can be measured by the impedance axis . As shown in Figure c, the Gr–Cs–Mn 3 O 4 electrode has a lower transmission resistance than the Gr, suggesting the decreased limitation of the electrochemical reaction.…”

Section: Resultsmentioning

confidence: 99%

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Fabrication of Graphene-Based Xerogels for Removal of Heavy Metal Ions and Capacitive Deionization

Yang

et al. 2015

ACS Sustainable Chem. Eng.

110

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With a rapid increase of population, delivering clean and potable water to humans has been an impending challenge. Here, we report a green method for the preparation of graphene–chitosan–Mn3O4 (Gr–Cs–Mn3O4) composites, where Gr–Cs hydrogels are first prepared from the self-assembly of chitosan with graphene oxide (GO) nanosheets; then Gr–Cs–Mn3O4 composites are obtained by oxidizing Mn(II) ions which are adsorbed by Gr–Cs hydrogels. The effects of pH and mass ratio of GO to Cs on sorption of different ions are investigated. Enhanced capacitive deionization performance of Gr–Cs–Mn3O4 composites was also demonstrated. The resultant Gr–Cs–Mn3O4 composites exhibit a hierarchical porous structure with a specific surface area of 240 m2/g and excellent specific capacity of 190 F/g, much higher than those of pristine reduced graphene oxide electrodes. Distinguished electrochemical capacity and low inner resistance endow Gr–Cs–Mn3O4 composites with outstanding specific electrosorptive capacity of 12.7 mg/g.

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Section: ■ Results and Discussionmentioning

confidence: 88%

Section: Resultsmentioning

confidence: 99%

Fabrication of Graphene-Based Xerogels for Removal of Heavy Metal Ions and Capacitive Deionization

Yang

et al. 2015

ACS Sustainable Chem. Eng.

110

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Ti₃C₂‐MXene Partially Derived Hierarchical 1D/2D TiO₂/Ti₃C₂ Heterostructure Electrode for High‐Performance Capacitive Deionization

Liu

et al. 2022

Advanced Science

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Constructing faradaic electrode with superior desalination performance is important for expanding the applications of capacitive deionization (CDI). Herein, a simple one‐step alkalized treatment for in situ synthesis of 1D TiO2 nanowires on the surface of 2D Ti3C2 nanosheets, forming a Ti3C2‐MXene partially derived hierarchical 1D/2D TiO2/Ti3C2 heterostructure as the cathode electrode is reported. Cross‐linked TiO2 nanowires on the surface help avoid layer stacking while acting as the protective layer against contact of internal Ti3C2 with dissolved oxygen in water. The inner Ti3C2 MXene nanosheets cross over the TiO2 nanowires can provide abundant active adsorption sites and short ion/electron diffusion pathways. . Density functional theory calculations demonstrated that Ti3C2 can consecutively inject electrons into TiO2, indicating the high electrochemical activity of the TiO2/Ti3C2. Benefiting from the 1D/2D hierarchical structure and synergistic effect of TiO2 and Ti3C2, TiO2/Ti3C2 heterostructure presents a favorable hybrid CDI performance, with a superior desalination capacity (75.62 mg g−1), fast salt adsorption rate (1.3 mg g−1 min−1), and satisfactory cycling stability, which is better than that of most published MXene‐based electrodes. This study provides a feasible partial derivative strategy for construction of a hierarchical 1D/2D heterostructure to overcome the restrictions of 2D MXene nanosheets in CDI.

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Nanoparticles as Detoxifiers for Industrial Wastewater

Solomon,

Kanchan,

Kesheri

2024

Water Air Soil Pollut

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Capacitive deionization of seawater effected by nano Ag and Ag@C on graphene

Cited by 26 publications

References 33 publications

Fabrication of Graphene-Based Xerogels for Removal of Heavy Metal Ions and Capacitive Deionization

Fabrication of Graphene-Based Xerogels for Removal of Heavy Metal Ions and Capacitive Deionization

Ti₃C₂‐MXene Partially Derived Hierarchical 1D/2D TiO₂/Ti₃C₂ Heterostructure Electrode for High‐Performance Capacitive Deionization

Nanoparticles as Detoxifiers for Industrial Wastewater

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Capacitive deionization of seawater effected by nano Ag and Ag@C on graphene

Cited by 26 publications

References 33 publications

Fabrication of Graphene-Based Xerogels for Removal of Heavy Metal Ions and Capacitive Deionization

Fabrication of Graphene-Based Xerogels for Removal of Heavy Metal Ions and Capacitive Deionization

Ti3C2‐MXene Partially Derived Hierarchical 1D/2D TiO2/Ti3C2 Heterostructure Electrode for High‐Performance Capacitive Deionization

Nanoparticles as Detoxifiers for Industrial Wastewater

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About

Ti₃C₂‐MXene Partially Derived Hierarchical 1D/2D TiO₂/Ti₃C₂ Heterostructure Electrode for High‐Performance Capacitive Deionization