Fabrication of a phosphorylated graphene oxide–chitosan composite for highly effective and selective capture of U(<scp>vi</scp>)

Cai, Yawen; Wu, Chunfang; Li, Yong; Zhang, Linjuan; Chen, Lanhua; Wang, Jianqiang; Wang, Xiangke; Yang, Shitong; Wang, Shuao

doi:10.1039/c7en00412e

Cited by 146 publications

(69 citation statements)

References 71 publications

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“…No obvious change is found for the peaks of C=C/C‐C. However, the chemical shift of C‐N indicates a certain interaction between 4,4′‐bipyridine and Ni 2+ ions . Two binding energy peaks of O 1s in H 4 TBAPy are observed at 532.9 and 532.3 eV, which are allocated to C‐O and C=O bonds, respectively.…”

Section: Resultsmentioning

confidence: 86%

A metal–organic gel‐based fluorescent chemosensor for selective Al³⁺ detection

Yang

Wang

et al. 2019

Applied Organom Chemis

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As an important metal element, aluminium has a significant impact on the environment and human health, and thus the detection of Al 3+ has become the subject of much research. We synthesized a Ni(II)-based metal-organic gel (Ni-MOG), which can serve as an Al 3+ fluorescence sensor with high selectivity and sensitivity, the limit of detection being calculated to be 0.5 μM. In addition, a composite film was further fabricated by hybridization of this Ni-MOG with poly(vinyl alcohol). The composite film produced a rapid fluorescence response to Al 3+ solutions at concentrations above 5 × 10 −5 M in 5 min. The Ni-MOG composite film can also be successfully applied for the sensitive detection of Al 3+ in real samples of tap water and seawater. The effective detection of Al 3+ described in this contribution provides a new insight into water quality monitoring and has promising application value.

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Section: Resultsmentioning

confidence: 86%

A metal–organic gel‐based fluorescent chemosensor for selective Al³⁺ detection

Yang

Wang

et al. 2019

Applied Organom Chemis

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“…The pseudo‐second‐order kinetic model was defined as Equation

\frac{t}{Q_{normalt}} = \frac{1}{k \cdot Q_{normale}^{2}} + \frac{1}{Q_{normale}}

where k was the pseudo‐second‐order rate constant of adsorption (g mg −1 min −1 ), t was the adsorption time (min), and Q e and Q t were the amounts of U(VI) adsorbed (mg g −1 ) at equilibrium and at contact time t , respectively. The selectivity coefficient K s (U/M), which was described in Equation , was introduced to compare the selectivity of the NPS‐GLCs to capture U(VI) from the mixed solution of U(VI) and the competitive ions as follows

K_{normalS} (\frac{U}{M}) = \frac{K_{d, U}}{K_{d, M}}

where K d,U (mL g −1 ) and K d,M (mL g −1 ) are the distribution coefficients of U(VI) and the competing metal ion, respectively.…”

Section: Methodsmentioning

confidence: 99%

N, P, and S Codoped Graphene‐Like Carbon Nanosheets for Ultrafast Uranium (VI) Capture with High Capacity

Chen

Jia

et al. 2018

Advanced Science

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The development of functional materials for the highly efficient capture of radionuclides, such as uranium from nuclear waste solutions, is an important and challenging topic. Here, few‐layered N, P, and S codoped graphene‐like carbon nanosheets (NPS‐GLCs) that are fabricated in the 2D confined spacing of silicate RUB‐15 and applied as sorbents to remove U(VI)ions from aqueous solutions are presented. The NPS‐GLCs exhibit a large capacity, wide pH suitability, an ultrafast removal rate, stability at high ionic strengths, and excellent selectivity for U(VI) as compared to multiple competing metal ions. The 2D ultrathin structure of NPS‐GLCs with large spacing of 1 nm not only assures the rapid mass diffusion, but also exposes a sufficient active site for the adsorption. Strong covalent bonds such as P—O—U and S—O—U are generated between the heteroatom (N, P, S) with UO2 2+ according to X‐ray photoelectron spectroscopy analysis and density functional theory theoretical calculations. This work highlights the interaction mechanism of low oxidation state heteroatoms with UO2 2+, thereby shedding light on the material design of uranium immobilization in the pollution cleanup of radionuclides.

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“…) Q m (mg/g)Sorbents (ref. ) Q m (mg/g)AMGO 34 123.40Al 2 O 3 nanofibres 35 204.10Fe-SC 36 148.99Fe 3 O 4 @TiO 2 37 118.80Fe 3 O 4 /GO 38 69.49Layered double oxides/carbon 39 354.2Magnetic cucurbit[6]uril/GO 40 122.50g-C 3 N 4 @Ni-Mg-Al-LDH 41 99.7Oxime-grafted CMK-5 42 62.00 l -C 3 N 4 /PDA/PEI 3 43 60.51Polyacrylamide–hydroxyapatite 44 0.95TiO 2-x 45 65Polypyrrole 46 87.72CaTiO x ; CaAlO x 47 241.7; 258.29Amidoxime modified Fe 3 O 4 @SiO 2 48 105.50Titanate 49 358Modified silica gel 50 90.30CNFs 51 125Birnessite-modified pine biochar 52 47.05p-AO/ CNFs; c-AO/CNFs 53 588.24; 263.18Talc 54 41.60RUB-15 55 152MnO 2 –Fe 3 O 4 –RGO 56 108.70GO-CS-P 57 779.44SA/CMC-Ca-Al 58 101.76Ca/Al-LDH@CNTs 59 382.9Phosphate-modified pine wood sawdust 60 74.10GO (Present study)16.03GOMO (Present study)153.85…”

Section: Resultsmentioning

confidence: 99%

Facile preparation and adsorption performance of graphene oxide-manganese oxide composite for uranium

Yang

Zhu

Huang

2018

Sci Rep

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To overcome the limits of low adsorption capacity and the separation difficulty of solid from liquid phase for graphene oxide (GO), a novel nanocomposite graphene oxide-manganese oxide (GOMO) was facilely fabricated under ultrasonic radiation. The structures and micro-morphology of the products were characterized by fourier transform infrared (FT-IR) spectroscopy, raman shift spectroscopy, X-ray diffraction (XRD) pattern and scanning electron microscopy (SEM). The effect of solution pH, adsorbent dose, contact time, initial uranium concentration, ionic strength and temperature on uranium removal efficiency was studied by batch adsorption experiments. The product GOMO was used to examine the feasibility of the removal of high salt content in uranium-containing wastewater. The adsorption results were fitted using the Langmuir and Freundlich isotherm models. The kinetic parameters in the adsorption process were measured and fitted. Five adsorption/desorption cycles were performed using 3 M HNO3 as the regenerant in order to evaluate the reuse of GOMO.

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Fabrication of a phosphorylated graphene oxide–chitosan composite for highly effective and selective capture of U(vi)

Abstract: The synthesized GO–CS–P exhibits ultrafast removal kinetics, high sorption capacity and great selectivity towards U(vi).

Cited by 146 publications

References 71 publications

A metal–organic gel‐based fluorescent chemosensor for selective Al³⁺ detection

A metal–organic gel‐based fluorescent chemosensor for selective Al³⁺ detection

N, P, and S Codoped Graphene‐Like Carbon Nanosheets for Ultrafast Uranium (VI) Capture with High Capacity

Facile preparation and adsorption performance of graphene oxide-manganese oxide composite for uranium

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Fabrication of a phosphorylated graphene oxide–chitosan composite for highly effective and selective capture of U(vi)

Abstract: The synthesized GO–CS–P exhibits ultrafast removal kinetics, high sorption capacity and great selectivity towards U(vi).

Cited by 146 publications

References 71 publications

A metal–organic gel‐based fluorescent chemosensor for selective Al3+ detection

A metal–organic gel‐based fluorescent chemosensor for selective Al3+ detection

N, P, and S Codoped Graphene‐Like Carbon Nanosheets for Ultrafast Uranium (VI) Capture with High Capacity

Facile preparation and adsorption performance of graphene oxide-manganese oxide composite for uranium

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A metal–organic gel‐based fluorescent chemosensor for selective Al³⁺ detection

A metal–organic gel‐based fluorescent chemosensor for selective Al³⁺ detection