Investigation of uranium (VI) adsorption by poly(dopamine) functionalized waste paper derived carbon

Zhu, Jiahui; Liu, Qi; Liu, Jingyuan; Chen, Rongrong; Zhang, Hongsen; Zhang, Milin; Liu, Peili; Wang, Jun

doi:10.1016/j.jtice.2018.05.024

Cited by 36 publications

(15 citation statements)

References 51 publications

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“…This result strongly differs from the known fact that adsorption of U(VI) at PDA hybrid core-shell nanocomposites is much higher at pH > 5 than that of at pH 4. 15,21,22,26 In particular, in accord with Fig. 2 when transition from pH 4 to pH 6.…”

Section: The Actinide Moieties Uptake From the Model Aqueous Solutionssupporting

confidence: 79%

“…Dependence of the radionuclides sorption on pH both for PDA containing core-shell composites 15,21,22,26 30 Inevitably, in the case of core-shell particulate sorbents with a PDA shell and of pure PDA, the adsorption of the radionuclide species will be affected by the sorbent surface charge. Indeed, it was demonstrated that at pH higher than $3.7 the z-potential of the surface of Fe 3 O 4 @PDA nanoparticles was negative that facilitated adsorption of the complex uranyl hydrated cations.…”

Section: The Actinide Moieties Uptake From the Model Aqueous Solutionsmentioning

confidence: 99%

“…uranium and plutonium) from water media. In particular, for the nanocomposites of mSiO 2 /PDA and waste paper derived carbon coated with PDA (WPC@PDA) the calculated maximum capacities for uranium U(VI) were 332.3 mg g À1 at T ¼ 318.5 K, pH ¼ 5.5 (287.5 mg g À1 at T ¼ 298.15, pH ¼ 5.5) 21 and 384.6 mg g À1 at T ¼ 298 K, pH ¼ 7.0, 22 respectively. The only (to the best of our knowledge) comparison of a PDA nanocomposite and pure PDA was made by Zhu et al at lower pH ¼ 4.5 and T ¼ 298 K. 15 They calculated that the adsorption capacities of the core-shell polydopamine@MgAl-layered double hydroxide (PDA@MgAl-LDH) and pure PDA were 142.86 mg g À1 and 54.05 mg g À1 , respectively.…”

Section: Introductionmentioning

confidence: 99%

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High effectiveness of pure polydopamine in extraction of uranium and plutonium from groundwater and seawater

et al. 2019

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Section: The Actinide Moieties Uptake From the Model Aqueous Solutionssupporting

confidence: 79%

Section: The Actinide Moieties Uptake From the Model Aqueous Solutionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

High effectiveness of pure polydopamine in extraction of uranium and plutonium from groundwater and seawater

et al. 2019

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“…However, traditional modification strategies have some shortcomings such as complex operation, high energy consumption, and complex involvement of hazardous reagents 20 . In recent years, biomimetic functionalization for mesoporous materials with dopamine have attracted extensive attention as they are inexpensive, adhesive, and possess excellent adsorption efficiencies 21–24 . Gao et al .…”

Section: Introductionmentioning

confidence: 99%

“…Zhu et al . 24 synthesized a novel adsorbent through waste paper derived carbon that was coated with polydopamine, and its hierarchically interconnected porous structure and large specific surface area contributed to the excellent absorption capacity for uranium (VI) in simulated seawater.…”

Section: Introductionmentioning

confidence: 99%

Norepinephrine-functionalised nanoflower-like organic silica as a new adsorbent for effective Pb(II) removal from aqueous solutions

Gao

Guo

Wen

et al. 2019

Sci Rep

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In order to remove Pb(II) ions efficiently from aqueous solutions, a new effective adsorbent of norepinephrine-functionalised nanoflower-like organic silica (NE-NFOS) was synthesised by a biomimetic method. Biomimetic functionalization with norepinephrine has the advantages of environment-friendly and easy operation. Characterization of the NE-NFOS using scanning electron microscopy, transmission electron microscopy, Brunauer-Emmett-Teller method, and Fourier-transform infrared spectroscopy revealed that the NFOS was modified successfully by norepinephrine. Furthermore, the influences of different parameters including adsorption kinetics, solution pH, adsorption isotherms, concentrations of Na+, K+, Ca2+, and Mg2+, desorption and reusability were studied. The adsorption experiments showed that the capacity of NE-NFOS to adsorb Pb(II) ions improved greatly after functionalisation and adsorption equilibrium was attained within 90 min at a pH of 6.0. The Na+, K+, Ca2+, and Mg2+ concentrations had little influence on the adsorption, and after recycling for five times, the Pb(II) ion removal efficiency of the adsorbent was more than 79% of its initial value. Thus, it was demonstrated that the NE-NFOS with excellent adsorption performance could be a suitable adsorbent for Pb(II) ions removal in practical applications.

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Accelerated Chemical Thermodynamics of Uranium Extraction from Seawater by Plant‐Mimetic Transpiration

et al. 2021

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The extraction of uranium from seawater, which is an abundant resource, has attracted considerable attention as a viable form of energy-resource acquisition. The two critical factors for boosting the chemical thermodynamics of uranium extraction from seawater are the availability of sufficient amounts of uranyl ions for supply to adsorbents and increased interaction temperatures. However, current approaches only rely on the free diffusion of uranyl ions from seawater to the functional groups within adsorbents, which largely limits the uranium extraction capacity. Herein, inspired by the mechanism of plant transpiration, a plant-mimetic directional-channel poly(amidoxime) (DC-PAO) hydrogel is designed to enhance the uranium extraction efficiency via the active pumping of uranyl ions into the adsorbent. Compared with the original PAO hydrogel without plant-mimetic transpiration, the uranium extraction capacity of the DC-PAO hydrogel increases by 79.33% in natural seawater and affords the fastest reported uranium extraction average rate of 0.917 mg g −1 d −1 among the most state-of-the-art amidoxime group-based adsorbents, along with a high adsorption capacity of 6.42 mg g −1 within 7 d. The results indicate that the proposed method can enhance the efficiency of solar-transpiration-based uranium extraction from seawater, particularly in terms of reducing costs and saving processing time.

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Investigation of uranium (VI) adsorption by poly(dopamine) functionalized waste paper derived carbon

Cited by 36 publications

References 51 publications

High effectiveness of pure polydopamine in extraction of uranium and plutonium from groundwater and seawater

High effectiveness of pure polydopamine in extraction of uranium and plutonium from groundwater and seawater

Norepinephrine-functionalised nanoflower-like organic silica as a new adsorbent for effective Pb(II) removal from aqueous solutions

Accelerated Chemical Thermodynamics of Uranium Extraction from Seawater by Plant‐Mimetic Transpiration

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