Preparation of stable and high-efficient poly(m-phenylenediamine)/reduced graphene oxide composites for hexavalent chromium removal

Jin, Linfeng; Huang, Lei; Ren, Lili; He, Yingjie; Tang, Jingwen; Wang, Sheng; Yang, Weichun; Wang, Haiying; Chai, Liyuan

doi:10.1007/s10853-018-2844-9

Cited by 48 publications

(26 citation statements)

References 62 publications

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“…After in situ polymerization of PmPD, the Ti3C2Tx peaks of Ti3C2Tx/PmPD absolutely disappeared. The Raman spectrogram of Ti3C2Tx/PmPD had two strong peaks similar to that of PmPD at ~1355 and ~1558 cm −1 [41], indicating the strong interaction between PmPD and Ti3C2Tx.…”

Section: Int J Environ Res Public Health 2020 17 X For Peer Revmentioning

confidence: 97%

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: Int J Environ Res Public Health 2020 17 X For Peer Revmentioning

confidence: 97%

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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“… 18 Recently, graphene-based materials have garnered enormous attention as high-efficiency adsorbents for scavenging heavy metals from water. 19 − 29 As an important graphene derivative, graphene oxide (GO) is the fabrication platform of many graphene-based materials. Generally, GO can be fabricated via exfoliating natural graphite under an oxidative condition based on the well-known Hummers method.…”

Section: Introductionmentioning

confidence: 99%

Mechanism of Cd(II) and Cu(II) Adsorption onto Few-Layered Magnetic Graphene Oxide as an Efficient Adsorbent

Guo

Bulin

et al. 2021

ACS Omega

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Heavy metal contamination caused by industrial discharge is a challenging environmental issue. Herein, an efficient adsorbent based on few-layered magnetic graphene oxide (FLMGO) was fabricated, characterized, and utilized to remove aqueous Cd(II) and Cu(II). Results present that the two components graphene oxide (GO) and Fe 3 O 4 of FLMGO promote mutually, enabling FLMGO to outperform either GO or Fe 3 O 4 . Specifically, FLMGO adsorbs Cd(II) and Cu(II) with adsorption quantities of 401.14 and 1114.22 mg·g –1 in 5 and 7 min, respectively. Moreover, FLMGO can be readily recovered via magnetic separation using a hand-held magnet. Adsorptions are spontaneous, endothermic, and entropy increasing, which are the best described by the Freundlich and pseudo-second-order model. The interaction mechanism is as follows: lone pair electrons in C=O- and C–O-related groups were coordinated toward Cd(II) and Cu(II) to induce chemical interaction. The high adsorption efficiency endows FLMGO with encouraging application potential in heavy metal remediation.

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“…Graphene, as the thinnest two-dimensional (2D) carbon material with one atom thickness (0.334 nm) [11][12][13][14], has been widely used in many fields. Its unique and stable lattice structure results in excellent thermal conductivity [15,16], electrical conductivity [17][18][19][20], large specific surface area [21][22][23] and facile chemical modification [24][25][26]. Graphene has also been reported to be an excellent support for SACs due to its remarkable properties [27][28][29][30][31][32][33][34].…”

Section: Introductionmentioning

confidence: 99%

Graphene-supported metal single-atom catalysts: a concise review

Ren

et al. 2020

Sci. China Mater.

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Single-atom catalysts (SACs) have become an emerging frontier trend in the field of heterogeneous catalysis due to their high activity, selectivity and stability. SACs could greatly increase the availabilities of the active metal atoms in many catalytic reactions by reducing the size to single atom scale. Graphene-supported metal SACs have also drawn considerable attention due to the unique lattice structure and physicochemical properties of graphene, resulting in superior activity and selectivity for several chemical reactions. In this paper, we review recent progress in the fabrications, advanced characterization tools and advantages of graphene-supported metal SACs, focusing on their applications in catalytic reactions such as CO oxidation, the oxidation of benzene to phenol, hydrogen evolution reaction, methanol oxidation reaction, oxygen reduction reaction, hydrogenation and photoelectrocatalysis. We also propose the development of SACs towards industrialization in the future.

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Preparation of stable and high-efficient poly(m-phenylenediamine)/reduced graphene oxide composites for hexavalent chromium removal

Cited by 48 publications

References 62 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

Mechanism of Cd(II) and Cu(II) Adsorption onto Few-Layered Magnetic Graphene Oxide as an Efficient Adsorbent

Graphene-supported metal single-atom catalysts: a concise review

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