MOF-derived 3D MnO2@graphene/CNT and Ag@graphene/CNT hybrid electrode materials for dual-ion selective pseudocapacitive deionization

Vengatesan, M. R.; Yoo, Jae-In; Song, Jang‐Kun; Mittal, Vikas

doi:10.1016/j.desal.2023.116369

Cited by 27 publications

(7 citation statements)

References 76 publications

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“…The Ag + 3d 3/2 and Ag + 3d 5/2 peaks with binding energies of 366.60 and 372.60 eV are ascribed to Ag + ions, and other doublets at 367.29 and 373.4 eV are assigned to metallic Ag (Ag o ), which agrees with the previous literature. [ 27 ] The two Cu 2p 3/2 peaks (Figure 3c) are located at 932.12 and 934.45 eV and have the characteristics of two satellite peaks, indicating the presence of Cu + and Cu 2+ , as well as the features of two satellite peaks, which are attributed to Cu 2p 1/2 electrons of Cu 2+ ions in the CuO‐Ag nanoporous material. [ 28 ] The O 1s spectrum is in Figure 3d, composed of three deconvoluted peaks at 531.95, 547.81, and 553.7 eV.…”

Section: Resultsmentioning

confidence: 99%

Facile Solution‐Processed Semiconductor/Metal Hybrid Nanoporous Materials; their Highly Photoredox Catalytic Power

Mustaqeem,

Naikoo,

Ahmad

et al. 2023

Adv Materials Technologies

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Designing a photoredox material with highly efficient organic pollutant degradation ability and cost effectiveness is challenging. Conventional photoredox materials have inherent drawbacks, including high cost, low photon‐to‐electron conversion rates, and low effective surface area. Herein, an alternative nanoporous semiconductor/metal hybrid (CuO‐Ag) photoredox catalysis material with all solution processes is developed to circumvent these shortcomings. The obtained results evidently indicate that the loading of Ag onto the CuO nanoporous material leads to improving the Brunauer–Emmett–Teller (BET) specific surface area (48.369 m2 g−1) with pore size (36.436 nm) and pore's volume (0.301 cm3 g−1) of CuO‐Ag nanoporsity. The improved semiconductor/metal hybrid surface area and porosity significantly enhance the photocatalytic efficiency (i.e., ≈99% degradation of RhB and 4‐NP), owing to the synergy effect. Additionally, the decoration of metal nanostructure enables to enhance photo‐absorption and the semiconductor/metal heterojunction is useful to enhance photo‐excited electron and hole charge carriers separation. Such structure‐designed CuO‐Ag nanoporous materials maintain high photostability during long light irradiation conditions. The photocatalytic efficiency is better than all published reports. This strategy using hybrid semiconductor/metal nanoporous material with high surface area and greater porosity improved activity significantly offers a facile guideline for targeting photoredox catalysis applications.

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Section: Resultsmentioning

confidence: 99%

Facile Solution‐Processed Semiconductor/Metal Hybrid Nanoporous Materials; their Highly Photoredox Catalytic Power

Mustaqeem,

Naikoo,

Ahmad

et al. 2023

Adv Materials Technologies

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“…Nonetheless, the pyrolyzed materials often contain porous carbon or metal nanoparticles on porous carbon, resulting in faradaic materials that exhibit advanced electrochemical performance compared to other faradaic materials in CDI. 139 Sadly, the presence of single metal-based nanoparticles on carbonaceous materials increases the probability of material solubility during CDI operation, leading to the generation of redundant secondary pollutants. Developing advanced strategies to address this concern is required to boost CDI performances.…”

Section: Mof-derived Carbon Materialsmentioning

confidence: 99%

A mini review on metal–organic framework-based electrode materials for capacitive deionization

Khan,

Leong,

et al. 2023

Nanoscale

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“…The strategy of enhancing the effective electron transfer of MOFs has become a research hotspot. The combination of MOFs with conductive polymers, , redox-active molecules, graphene species, quantum dots, , metallic nanoparticles, , and carbon nanomaterials , has been shown to be effective in enhancing electrical conductivity. Nitrogen-doped mesoporous carbon nanosphere (NMCS) has excellent conductivity, superior mechanical strength, and high specific surface area, which has the potential to enhance electron transfer between electrode surfaces and analytes .…”

Section: Introductionmentioning

confidence: 99%

Bismuth Metal–Organic Framework/Carbon Nanosphere Composites for Ultrasensitive Simultaneous Electrochemical Detection of Lead and Cadmium

Yang

Xiu-Li

Sun

et al. 2023

ACS Appl. Nano Mater.

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An amino-functionalized bismuth metal−organic framework (Bi-BDC-NH 2 ) composited with nitrogen-doped mesoporous carbon nanosphere (NMCS) was prepared to fabricate a Bi-BDC-NH 2 @NMCS electrochemical sensor for simultaneous determination of Pb(II) and Cd(II). The synthesized Bi-BDC-NH 2 was granular, amorphous, and loosely aggregated to form a porous structural composition where NMCS was embedded. The large specific area and exposed sites of Bi-BDC-NH 2 @NMCS copromote the adsorption and electron transfer of metal ions on the electrode surface. Compared with the traditional bismuth film electrode, the Bi-BDC-NH 2 @NMCS electrode can improve the charge transfer, stability, and conductivity. The developed method exhibited superior stripping performance with a detection limit of 0.36 ng mL −1 for Pb(II) and 0.44 ng mL −1 for Cd(II), respectively, and a linear range of 1.0−1500 ng mL −1 . It was applied to detect Pb(II) and Cd(II) in liver, fish, and shrimp samples with recoveries of 93.6−99.7% and 94.4−103.2%, respectively.

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MOF-derived 3D MnO2@graphene/CNT and Ag@graphene/CNT hybrid electrode materials for dual-ion selective pseudocapacitive deionization

Cited by 27 publications

References 76 publications

Facile Solution‐Processed Semiconductor/Metal Hybrid Nanoporous Materials; their Highly Photoredox Catalytic Power

Facile Solution‐Processed Semiconductor/Metal Hybrid Nanoporous Materials; their Highly Photoredox Catalytic Power

A mini review on metal–organic framework-based electrode materials for capacitive deionization

Bismuth Metal–Organic Framework/Carbon Nanosphere Composites for Ultrasensitive Simultaneous Electrochemical Detection of Lead and Cadmium

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