Effect of environmental conditions on the sorption of uranium on Fe 3 O 4 @MnO 2 hollow spheres

Zhang, Jian; Guo, Zhiqiang; Li, Yuan; Pan, Shuhao; Chen, Xinlei; Xu, Jinzhang

doi:10.1016/j.molliq.2016.07.136

Cited by 35 publications

(12 citation statements)

References 32 publications

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“…The result proved that the adsorption of uranium on both fibers werein the way of the inner-sphere surface complex [31]. The finding agreed with other uranium adsorption phenomenon reported in the literature [32].…”

Section: Effect Of Ph and Ionic Strength On Uranium Adsorptionsupporting

confidence: 90%

Facile Preparation of Novel Manganese Dioxide Modified Nanofiber and Its Uranium Adsorption Performance

Tao¹,

Lv²,

Tao³

2021

JAMP

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In this study a novel manganese dioxide modified nanofiber was facile prepared using the electrospinning technique. The as-prepared manganese dioxide/poly(vinyl alcohol)/poly (acrylic acid) (briefly as MnO 2 -PVA/PAA) was firstly characterized by SEM, FT-IR, XRD, stress-strain test and secondly tested as an adsorbent to remove uranium from aqueous solution. Effect of pH, ionic strength, initial uranium concentration, mixing time, temperature on the adsorption, reusability and adsorption mechanism were illustrated. The theoretical adsorption amount of MnO 2 -PVA/PAA calculated as 398.85 mg/g was competitive compared with the reported values. The study proved MnO 2 -PVA/PAA is promising in the uranium removal from aqueous medium.

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Section: Effect Of Ph and Ionic Strength On Uranium Adsorptionsupporting

confidence: 90%

Facile Preparation of Novel Manganese Dioxide Modified Nanofiber and Its Uranium Adsorption Performance

Tao¹,

Lv²,

Tao³

2021

JAMP

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“…Gotic et al 62 hydrothermally synthesized α-MnO 2 nanotubes and nanorods, followed by addition of divalent metal cations. Doping Mn 2+ induced α-MnO 2 nanotubes to be converted into three-dimensional β-MnO 2 prismatic nanoparticles, while nanorods with low crystallinity Reprinted with permission from Zhang et al 64 Copyright 2016 Elsevier. (e) N 2 adsorption−desorption curves and BET surface area in inset table for α-MnO 2 and α-MnO 2 @LDHs and (f) adsorption isotherm.…”

Section: ■ Modification Methodsmentioning

confidence: 99%

“…Metal oxides can provide stable composite positions for MnO 2 nanoparticles, prevent aggregation, enlarge specific surface area of materials, and enrich binding sites. 63 Zhang et al 64 synthesized magnetic hollow sphere composite Fe 3 O 4 @ MnO 2 (Figure 5c) by growing graded MnO 2 nanosheets on SiO 2 @Fe 3 O 4 /C spheres, which could remove uranium ions economically and quickly (Figure 5d). Additionally, the adsorbent was easy to separate and did not generate secondary pollution.…”

Section: ■ Modification Methodsmentioning

confidence: 99%

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Removal of Radionuclides from Aqueous Solution by Manganese Dioxide-Based Nanomaterials and Mechanism Research: A Review

Wang

et al. 2021

ACS EST Eng.

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Manganese dioxide (MnO 2 ) is an environmentally friendly metal oxide. The characteristics of diverse morphology, rich crystal forms, and controllable particle size make MnO 2 flexibly adaptive to multiple requirements, attracting researchers in multidisciplinary fields. It is worth noting that MnO 2 and its derived materials have shown outstanding research progress in the treatment of radioactive pollutants in the past few decades. Given the need to summarize the research advances, this reivew surveys the achievements of MnO 2 -based nanomaterials in radioactive ion removal. The preparation and modification methods of MnO 2 , the application of MnO 2 -based materials in removing radionuclides, and the exploration of potential adsorption mechanisms will be carefully discussed. Finally, the research trends are summarized and an outlook is presented, aiming at providing reference for further design and synthesis of MnO 2 -based nanomaterials with practical application value for removal of radionuclides.

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“…The hollow spheres of Fe3O4@MnO2 photocatalyst were used in nuclear waste management for sorption of uranium (VI). By virtue of easy separation, high removal efficiency, and eco-friendly performance, Fe3O4@MnO2 hollow spheres had a valuable potential for uranium (VI) removal in nuclear waste [179]. Therefore, results revealed that Fe3O4@MnO2 had high efficiency for adsorption of heavy metals from water owing to its good recyclability and environment-friendly behaviour [180].…”

Section: Iron Oxide Modified Binary Metal Oxide Photocatalystsmentioning

confidence: 99%

Systematic review on applicability of magnetic iron oxides–integrated photocatalysts for degradation of organic pollutants in water

Singh

Sharma

Hasija

et al. 2019

Materials Today Chemistry

122

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Effect of environmental conditions on the sorption of uranium on Fe 3 O 4 @MnO 2 hollow spheres

Cited by 35 publications

References 32 publications

Facile Preparation of Novel Manganese Dioxide Modified Nanofiber and Its Uranium Adsorption Performance

Facile Preparation of Novel Manganese Dioxide Modified Nanofiber and Its Uranium Adsorption Performance

Removal of Radionuclides from Aqueous Solution by Manganese Dioxide-Based Nanomaterials and Mechanism Research: A Review

Systematic review on applicability of magnetic iron oxides–integrated photocatalysts for degradation of organic pollutants in water

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