Synthesis of amidoximated polyacrylonitrile nanoparticle/graphene composite hydrogel for selective uranium sorption from saline lake brine

Bai, Jing; Chu, Jian; Yin, Xiaobin; Wang, Jieru; Tian, Wei; Huang, Qinggang; Jia, Zimeng; Wu, Xianxin; Guo, Hangxu; Qin, Zhi

doi:10.1016/j.cej.2019.123553

Cited by 94 publications

(23 citation statements)

References 49 publications

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“…The H 2 N-C=N- O H peak changed to 532.3 eV after the adsorption of U(VI). After the adsorption of U(VI), all the binding energy shifted to higher values, indicating the decrease in electron density around the atoms [ 51 , 52 ].…”

Section: Resultsmentioning

confidence: 99%

Theory-Guided Design of a Method to Obtain Competitive Balance between U(VI) Adsorption and Swaying Zwitterion-Induced Fouling Resistance on Natural Hemp Fibers

Zhang

et al. 2022

IJMS

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The competitive balance between uranium (VI) (U(VI)) adsorption and fouling resistance is of great significance in guaranteeing the full potential of U(VI) adsorbents in seawater, and it is faced with insufficient research. To fill the gap in this field, a molecular dynamics (MD) simulation was employed to explore the influence and to guide the design of mass-produced natural hemp fibers (HFs). Sulfobetaine (SB)- and carboxybetaine (CB)-type zwitterions containing soft side chains were constructed beside amidoxime (AO) groups on HFs (HFAS and HFAC) to form a hydration layer based on the terminal hydrophilic groups. The soft side chains were swayed by waves to form a hydration-layer area with fouling resistance and to simultaneously expel water molecules surrounding the AO groups. HFAS exhibited greater antifouling properties than that of HFAO and HFAC. The U(VI) adsorption capacity of HFAS was almost 10 times higher than that of HFAO, and the max mass rate of U:V was 4.3 after 35 days of immersion in marine water. This paper offers a theory-guided design of a method to the competitive balance between zwitterion-induced fouling resistance and seawater U(VI) adsorption on natural materials.

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Section: Resultsmentioning

confidence: 99%

Theory-Guided Design of a Method to Obtain Competitive Balance between U(VI) Adsorption and Swaying Zwitterion-Induced Fouling Resistance on Natural Hemp Fibers

Zhang

et al. 2022

IJMS

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“…GO has a wide variety of functional groups on their surface and edges, such as hydroxyl group, epoxy group, carboxyl, carbonyl, etc. [14,47] Due to these oxygen-containing functional groups, GO possesses features such as high dispersion, hydrophilicity, and compatibility, making it a suitable support material to combine with other chemical functional groups or composites as demonstrated in our previous studies among many others. [68,69] Meanwhile, the functional groups of GO can provide active adsorption sites for environmental pollutants, such as uranium and other radioactive species in wastewater.…”

Section: Adsorption Capacities Of Go-based Nanomaterialsmentioning

confidence: 86%

“…Bai et al used NaClO4 as an inert electrolyte to study the effect of ionic strength on uranium sorption by PAO/GH. [14] Their results showed that the ionic strength had very weak influence on the uranium adsorption by the PAO/GH, even when Na + concentration was about 265 times of uranium. Zhang et al found that the effect of ionic strength on uranium adsorption by GO and sulfonated GO was not significant.…”

Section: 3mentioning

confidence: 99%

“…Most of adsorbents showed an inferior selectivity between uranium and vanadium. [14,127,128] Developing GO-based nanomaterials as absorbents with excellent high selectivity for uranium in harsh conditions is still needful. In summary, the uranium adsorption efficiency and capacity of GO-based nanomaterials are greatly affected by various factors, such as the pH value, temperature, contact time, ionic strength, and co-existing ions of solutions.…”

Section: 3mentioning

confidence: 99%

“…[11,12] Uranium, as a critical radioactive element, has been widely used to produce nuclear power, which is increasing the necessity for uranium as an energy resource. [13][14][15][16] However, uranium and its radioactive isotopes contribute to a high-level of nuclear waste, which needs to be properly disposed. Therefore, we carried out speciation (e.g.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

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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Accelerating Uranium Extraction from Water via Synergy of Adsorption and Filtration by MOF Hybrid Membrane

Zhang,

Gao,

Deng

et al. 2023

Advanced Sustainable Systems

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In this paper, novel UiO‐66‐AO‐based adsorption‐filtration hybrid membranes (UAMs) are prepared via an irradiation‐mediated growth strategy to simultaneously improve water flux and accelerate uranium extraction from water resources. The UAM shows an equilibrium adsorption that is four times faster than UiO‐66‐AO powder and an adsorption capacity that is over two times higher. UAM also achieves a record synergy of high flux and high uranium removal ratio from simulated seawater (1358.8 L m−2 h−1, 84.5%) by one‐time filtration under ambient temperature and pressure (the adsorption is 1.83 mg g−1 in 90 min). The excellent uranium extraction performance is attributed to the unique UAM structure, in which water flows through the channels of thin metal‐organic framework (MOF) film without blocking by substrate leading to the high flux during filtration, and the full contact of uranium with abundant exposed active sites promotes the adsorption. This work will be conducive to overcoming the bottleneck problems of uranium extraction from water resources.

show abstract

Synthesis of amidoximated polyacrylonitrile nanoparticle/graphene composite hydrogel for selective uranium sorption from saline lake brine

Cited by 94 publications

References 49 publications

Theory-Guided Design of a Method to Obtain Competitive Balance between U(VI) Adsorption and Swaying Zwitterion-Induced Fouling Resistance on Natural Hemp Fibers

Theory-Guided Design of a Method to Obtain Competitive Balance between U(VI) Adsorption and Swaying Zwitterion-Induced Fouling Resistance on Natural Hemp Fibers

Graphene Oxide-based Nanomaterials for Uranium Adsorptive Uptake

Accelerating Uranium Extraction from Water via Synergy of Adsorption and Filtration by MOF Hybrid Membrane

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