Rational Synthesis of Polyamidoxime/Polydopamine-Decorated Graphene Oxide Composites for Efficient Uranium(VI) Removal from Mine Radioactive Wastewater

Zhang, Dai; Sun, Yusu; Zhang, Hui; Ding, Dexin; Le, Li

doi:10.1021/acs.iecr.9b03934

Cited by 28 publications

(9 citation statements)

References 47 publications

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“…Another major use is in environmental pollution applications, such as the removal of heavy metal ions − and radioactive metal ions, − pigments and dyes, − and pesticides and herbicides. − Graphene-based magnetic materials have been displayed to be prospective absorbents on the basis of their electrical and surface properties . The graphene/GO/RGO graphene family has different surface functional groups and is easily chemically modified and functionalized.…”

Section: Graphene-based Magnetic Materialsmentioning

confidence: 99%

Research of Low-Dimensional Carbon-Based Magnetic Materials

Zhang

et al. 2022

ACS Appl. Electron. Mater.

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Magnetism in low-dimensional carbon materials, which is crucial for the realization of the physical properties, potential application, and development of carbon-based spintronic devices, has attracted extensive attention. In this Review, three typical low-dimensional carbon materials, including carbon nanotubes, graphene, and graphdiyne, are used to exhibit the research progress of a magnetic two-dimensional (2D) carbon material preparation strategy, the introduction of the local magnetic moment, and the resulting unique magnetic properties. The convenient and facile preparation methods of carbon-based magnetic materials have been introduced on the basis of their structural characteristics, especially for the advantageous structures and efficient chemical modification in graphene and graphdiyne. Various interesting ways, such as transition metal atom doping and nonmetal atom modification, have been exhibited to tune the electromagnetic characteristics of carbon-based materials. All those research studies provide a theoretical basis to promote the application of 2D carbon-based magnetic materials in spintronic devices involving spin and charge modulation and lay a foundation for the preparation of high-performance carbon-based magnetic materials with specific magnetic properties.

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Section: Graphene-based Magnetic Materialsmentioning

confidence: 99%

Research of Low-Dimensional Carbon-Based Magnetic Materials

Zhang

et al. 2022

ACS Appl. Electron. Mater.

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“…The adsorption amount of uranium by the MnO2-Fe3O4-rGO first increased and then decreased within the range of pH value of 2-12. Dai et al [73] found the adsorption capacity of GO/PDA/PAO increased rapidly at pH from 3 to 6 and then decreased with the increase of pH value from 6 to 8 due to the change of the species distribution of U(VI) and the surface of GO/PDA/PAO with increasing pH value (Fig. 1a, 1c, 1d).…”

Section: Effect Of Solution Ph Valuementioning

confidence: 89%

“…The XPS results revealed that U(VI) coordinated with amidoxime and imine/amine groups, indicating that the U(VI) was adsorbed on PAO and PDA groups. [73] Graphene oxide /hydroxyapatite (GO/HAP) was synthesized by directly assembling GO and HAP through a facile hydrothermal method. The GO/HAP composite had an outstanding adsorption capacity for U(VI) (373 mg/g) which was higher than that of GO (85 mg/g).…”

Section: Adsorption Capacities Of Go-based Nanomaterialsmentioning

confidence: 99%

“…1b. [113] Zhao, et al found that the adsorption efficiency of U(VI) by AOMGO was almost unaffected by ionic strength, which was mainly due to the formation of inner layer surface complexes between U(VI) and amidoxime and other oxygen-containing functional groups on the surface of the AOMGO rather than the formation of outer surface complexes or ion exchange. [90] On the contrary, some other studies reached different conclusions.…”

Section: 3mentioning

confidence: 99%

“…[45] Dai et al applied polyamidoxime/polydopamine-decorated GO (GO/PDA/PAO) for U(VI) adsorption from actual mine radioactive wastewater. [73] The removal rate and Kd of the metal ions in the actual wastewater are listed in Fig. 5.…”

Section: 3mentioning

confidence: 99%

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Graphene Oxide-based Nanomaterials for Uranium Adsorptive Uptake

Liu¹,

Mao²

2021

ES Mater. Manuf.

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The growth of nuclear power generation and the necessity to acquire uranium reserves for energy security and pollution regulation for environmental protection put much emphasis on the removal and recovery of uranium from aqueous solutions. Adsorption has been proved to be a promising method for this purpose method because of its high adsorption efficiency, easy operation, low cost, reusability and availability of massive adsorbents. Among a wide variety of adsorbents, graphene oxide (GO) has demonstrated excellent adsorption potential for uranium uptake and recovery due to its unique 2D structure, high specific surface area and abundant oxygen-containing functional groups. Regarding the functional groups, it can make GO with high dispersion and hydrophilicity and participate in the complexation of uranium, leading to high adsorption efficiency for uranium. In this review, the research status and progress of GO-based nanomaterials for uranium adsorption are summarized. Their adsorption capacities, influencing factors, kinetics, isotherms and thermodynamics are compared and discussed. The microscopic mechanisms of uranium adsorption onto these GO-based nanomaterials are elaborated at molecular level by spectral analysis, surface complexation models, and theoretical calculations. Meanwhile, the challenges and research trends in the study of uranium adsorption by GO-based nanomaterials are pointed out. We believe that our focused review provides not only a summarizing reference on the current status of uranium removal and recovery by GObased nanomaterials, but also future directions for related follow-up research and practical applications.

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