Efficient thorium(IV) removal by two-dimensional Ti2CTx MXene from aqueous solution

Li, Shuangxiao; Wang, Lin; Peng, Jing; Zhai, Maolin; Shi, Wei‐Qun

doi:10.1016/j.cej.2019.02.056

Cited by 180 publications

(58 citation statements)

References 53 publications

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“…As can be seen from Figure 1a-c, Ti 3 C 2 T x MXene exhibited 2D ultrathin morphology with a small average thickness of~4 nm. The disappearance of the peak at 39 • and the shift of the (002) peak to 6.04 • also indicated the formation of Ti 3 C 2 T x nanosheets ( Figure 1d) [35,36]. As shown in Figure 1e-g, Ti 3 C 2 T x /PmPD-X composites showed a 2D dispersed and wrinkled morphology with a thickness ranging from~15 nm to~70 nm.…”

Section: Materials Characterizationmentioning

confidence: 85%

Two-Dimensional Titanium Carbides (Ti3C2Tx) Functionalized by Poly(m-phenylenediamine) for Efficient Adsorption and Reduction of Hexavalent Chromium

Jin

Chai

Yang

et al. 2019

IJERPH

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Titanium carbides (MXenes) are promising multifunctional materials. However, the negative surface charge and layer-by-layer restacking of MXenes severely restrict their application in the field of anionic pollutants, including in hexavalent chromium (Cr(VI)). Herein, Ti3C2Tx MXenes was functionalized through in situ polymerization and intercalation of poly(m-phenylenediamine) (PmPD), then Ti3C2Tx/PmPD composites were obtained. Delightedly, Ti3C2Tx/PmPD composites exhibited positive surface charge, expanded interlayer spacing, and enhanced hydrophobicity. Furthermore, the specific surface area of Ti3C2Tx/PmPD composite was five and 23 times that of Ti3C2Tx and PmPD, respectively. These advantages endowed Ti3C2Tx/PmPD composite with an excellent adsorption capacity of Cr(VI) (540.47 mg g−1), which was superior to PmPD (384.73 mg g−1), Ti3C2Tx MXene (137.45 mg g−1), and the reported MXene-based adsorbents. The Cr(VI) removal mechanism mainly involved electrostatic adsorption, reduction, and chelation interaction. This study developed a simple functionalization strategy, which would greatly explore the potential of MXenes in the field of anionic pollutants.

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Section: Materials Characterizationmentioning

confidence: 85%

Two-Dimensional Titanium Carbides (Ti3C2Tx) Functionalized by Poly(m-phenylenediamine) for Efficient Adsorption and Reduction of Hexavalent Chromium

Jin

Chai

Yang

et al. 2019

IJERPH

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“…The advantage of 2D alk-MXene to adsorb heavy metal particles is that the formation of the hydrogen potential trap provides a hydrogen potential composed of hydrogen atoms of Ti 3 C 2 (OH) 2 around heavy metal and O atoms below the heavy metal atom. Thus, the reverse spin electron pairs are sufficient to capture heavy metal atoms [ 96 ].…”

Section: Applications Of the MC Mxene-based Nanomaterialsmentioning

confidence: 99%

“…Due to the excellent hydrophilicity and abundant surface functional groups of 2D MXene material, researchers explored the performance of 2D Ti 2 CT x MXene material to remove radioactive heavy metals Th(IV) [ 93 ]. Under different storage conditions, the adsorption capacity of Ti 2 CT x in the hydrated state (Ti 2 CT x -hydrated state) showed greater enhancement than the dry state, which was mainly due to the larger interlayer space of Ti 2 CT x , and the easier entry of Th(IV) ions [ 96 ]. The maximum adsorption capacity of hydrated Ti 2 CT x reached 213.2 mg/g, outperforming most common inorganic adsorbents.…”

Section: Applications Of the MC Mxene-based Nanomaterialsmentioning

confidence: 99%

Recent Advance in the Fabrication of 2D and 3D Metal Carbides-Based Nanomaterials for Energy and Environmental Applications

Wan

Wang

et al. 2021

Nanomaterials

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Two-dimensional (2D) nanomaterials have attracted increased interest and exhibited extended applications from nanotechnology to materials science, biomedicine, tissue engineering, as well as energy storage and environmental science. With the development of the synthesis and fabrication of 2D materials, a new family of 2D materials, metal carbides (MCs), revealed promising applications in recent years, and have been utilized for the fabrication of various functional 2D and three-dimensional (3D) nanomaterials for energy and environmental applications, ascribing to the unique physical and chemical properties of MCs. In this review, we present recent advance in the synthesis, fabrication, and applications of 2D and 3D MC-based nanomaterials. For this aim, we first summarize typical synthesis methods of MCs, and then demonstrate the progress on the fabrication of 2D and 3D MC-based nanomaterials. To the end, the applications of MC-based 2D and 3D materials for chemical batteries, supercapacitors, water splitting, photodegradation, removal of heavy metals, and electromagnetic shielding are introduced and discussed. This work provides useful information on the preparation, hybridization, structural tailoring, and applications of MC-based materials, and is expected to inspire the design and fabrication of novel and functional MXene materials with improved performance.

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“…The Ti 2 CT x /PDDA composite achieved a removal capacity of up to 363 mg g –1 for Re (VII) with fast sorption kinetics and good selectivity in the presence of competing anions such as Cl – and SO 4 2– with a concentration 1800 times higher than Re (VII). Li et al [ 39 ] investigated the performance of 2D Ti 2 CT x MXene for Th(IV) removal and demonstrated that the hydrated MXene had a superior adsorption capability compared to the dry-counterpart. In this case, the sorption equilibrium was achieved within 720 min, with a maximum sorption capacity of 213.2 mg g −1 .…”

Section: Mxenes In Chemical Adsorption Of Pollutantsmentioning

confidence: 99%

Application of MXenes in environmental remediation technologies

et al. 2021

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MXenes have recently been recognized as potential materials based on their unique physical and chemical characteristics. The widely growing family of MXenes is rapidly expanding their application domains since their first usage as energy materials was reported in 2011. The inherent chemical nature, high hydrophilicity, and robust electrochemistry regard MXenes as a promising avenue for environment-remediation technologies such as adsorption, membrane separation, photocatalysis and the electrocatalytic sensor designed for pollutant detection. As the performance of MXenes in these technologies is on a continuous path to improvement, this review intends to cumulatively discuss the diversity and chemical abilities of MXenes and their hybrid composites in the fields mentioned above with a focus on MXenes improving surface-characteristics. The review is expected to promote the diversity of MXenes and their hybrid configuration for advanced technologies widely applied for environmental remediation.

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Efficient thorium(IV) removal by two-dimensional Ti2CTx MXene from aqueous solution

Cited by 180 publications

References 53 publications

Two-Dimensional Titanium Carbides (Ti3C2Tx) Functionalized by Poly(m-phenylenediamine) for Efficient Adsorption and Reduction of Hexavalent Chromium

Two-Dimensional Titanium Carbides (Ti3C2Tx) Functionalized by Poly(m-phenylenediamine) for Efficient Adsorption and Reduction of Hexavalent Chromium

Recent Advance in the Fabrication of 2D and 3D Metal Carbides-Based Nanomaterials for Energy and Environmental Applications

Application of MXenes in environmental remediation technologies

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