JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
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2023
·Vol. 332
·期 6
·1953-1960
·
IF 1.6
Luo Qingyun,Wang Chongshi,Zhu Wei,Yu Hongchao,Wang Chunyan,Chen Chuanhong
Due to its high adsorption capacity and adsorption efficiency, polymer gel shows excellent performances in the treatment of wastewater containing thorium. In this work, glutaraldehyde cross-linked N -(4-Aminobenzoyl)-ʟ-glutamic acid modified chitosan (CCS-AGA) was used to adsorb Th(IV) ions from aqueous solutions for the first time. FT-IR and SEM results revealed the chemical structure and surface morphology of this material. The influence of solution pH, contact time and initial concentration of Th ions on the adsorption of Th(IV) by CCS-AGA was investigated. The experimental data suggest that the adsorption behavior of CCS-AGA could be accurately predicted by the Langmuir model. The maximum theoretical adsorption capacity of CCS-AGA for Th(IV) was 162 mg/g. Moreover, this material exhibited excellent reusability and adsorption selectivity for Th(IV).
研究领域:
环境科学
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材料科学
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DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2024
·
IF 7.4
Xinyan Li,Zhanjun Zhang,Yaolin Zhao,Long Chen,Chenxi Yu,Xiaojuan Liu,Shangjie Zhao,Zhaoning Feng,Ke Ma,Xiaofan Ding,Jing Zhao,Songtao Xiao
Thorium, as a potential nuclear fuel for the next generation of thorium-based molten salt reactors, holds significant environmental and economic promise compared to current uranium-based atomic reactors. However, a large amount of thorium-containing wastewater is generated during operation of thorium-based reactors. Therefore, removing Th (IV) from wastewater is a critical step in advancing clean energy, mitigating radioactive contamination, and promoting sustainable nuclear fuel practices. In this research, we successfully synthesized a sp 2 -carbon conjugated organic framework (sp 2 -c-COF) (DFB-TMT COF), which exhibits ultrafast adsorption kinetics (∼3 min), high adsorption capacity (377.35 mg g −1 ), excellent selectivity (K d =4.82×10 3 mL g −1 ) and recycling ability (≥ 90 %) for thorium ions owing its well-organized one-dimensional pore channels with highly chemically stable and abundant nitrogen-containing adsorption sites. These results indicate that DFB-TMT COF is a promising functional adsorbent for the efficient recovery of thorium ions from thorium-containing wastewater.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Zixu Ren,Dingyang Chen,Minsi Shi,Rui Zhao
Confronted with the intricate presence of multiple metal ions in thorium mineral wastewater, electrospun nanofibers characterized by high porosity and easy functionalization are anticipated to emerge as distinctive adsorbents for the efficient and selective removal of thorium ions from water. Herein, the coordination microenvironment of electrospun nanofibers was tailored by the hyperbranched grafting and introduction of salicylaldehyde based groups, which displayed high affinity and selectivity toward Th(IV) ions. The obtained electrospun nanofibers showed fast adsorption kinetics of 60 min and high uptake capacity of 781.3 mg g −1 , which were superior to most of shapeable adsorbents and comparable to many powder adsorbents. The nanofiber adsorbent also exhibited a high distribution coefficient ( K d ) of 3.1 × 10 5 mL g −1 and good anti-interference ability against rare earth ions and uranyl ion. Based on the experimental characterizations and theoretical calculations, the grafted plenty of hydroxyl and Schiff base groups played the major role in achieving strong and selective Th(IV) ion binding. In addition, the macroscopical membrane morphology could effectively separate Th(IV) ions from water via dynamic filtration with a treatment volume 996 times its own membrane volume. This study not only offers new materials as efficient Th(IV) adsorbents but also provides a potential strategy for the recovery of nuclear fuel from wastewater.
研究领域:
材料科学
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环境科学
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DOI
PubMed
高影响因子
PLoS One
·
2018
·Vol. 13
·期 3
·e0193659
·
IF 2.766
Yaoyao Huang,Yang Hu,Lvcun Chen,Tao Yang,Hanfang Huang,Runping Shi,Peng Lu,Chenghua Zhong
Low–cost biosorbents (ginkgo leaf, osmanthus leaf, banyan leaf, magnolia leaf, holly leaf, walnut shell, and grapefruit peel) were evaluated in the simultaneous removal of La 3+ , Ce 3+ , Pr 3+ , Nd 3+ , Sm 3+ , Eu 3+ , Gd 3+ , Yb 3+ , Lu 3+ , UO 2 2+ , Th 4+ , Y 3+ , Co 2+ , Zn 2+ , Ni 2+ , and Sr 2+ from aqueous solutions. In single metal systems, all adsorbents exhibited good to excellent adsorption capacities toward lanthanides and actinides. In a simulated multicomponent mixed solution study, higher selectivity and efficiency were observed for Th 4+ over other metal cations, with ginkgo leaves providing the highest adsorptivity (81.2%) among the seven biosorbents. Through optimization studies, the selectivity of Th 4+ biosorption on ginkgo leaf was found to be highly pH–dependent, with optimum Th 4+ removal observed at pH 4. Th 4+ adsorption was found to proceed rapidly with an equilibrium time of 120 min and conform to pseudo–second–order kinetics. The Langmuir isotherm model best described Th 4+ biosorption, with a maximum monolayer adsorption capacity of 103.8 mg g –1 . Thermodynamic calculations indicated that Th 4+ biosorption was spontaneous and endothermic. Furthermore, the physical and chemical properties of the adsorbent were determined by scanning electron microscopy, Brunauer–Emmett–Teller, X-ray powder diffraction, and Fourier transform infrared analysis. The biosorption of Th from a real sample (monazite mineral) was studied and an efficiency of 90.4% was achieved from nitric acid at pH 4 using ginkgo leaves.
研究领域:
环境科学
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放射生物学
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DOI
PubMed
高影响因子
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2019
·Vol. 322
·期 2
·553-559
·
IF 1.186
Wu Peng,Wang Yun,Li Yang,Hu Xuewen,Xiu Taoyuan,Yuan Dingzhong,Liu Yan,Wu Zhenyu,Liu Zhirong
In order to reduce the potential toxicity to the environment after treatment of radioactive waste water, an eco-friendly graphene oxide nanoribbons/chitosan (GONRs-CTS) composite was prepared and utilized for adsorption of Th(IV) from aqueous solution. The GONRs-CTS adsorbent was characterized by XRD, FTIR and SEM, indicating that GONRs-CTS contains a large amount of oxygen-containing groups and chitosan was successfully attached to the GONRs surface. The Th(IV) adsorption on GONRs-CTS was endothermic and spontaneous, with the maximum single layer adsorption capacity was 140.6 mg g −1 at pH = 3.0, in the contact time of 12 h. The adsorption process was consistent with pseudo-second-order kinetics and the Langmuir isotherm model.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2019
·
IF 8.355
Hanlin Ding,Xiaonuo Zhang,Hao Yang,Xuegang Luo,Xiaoyan Lin
In this paper, a facile immobilization method was applied to load alginate , ferric oxide and dopamine onto fungal mycelium to prepare a series of spherical composites as potential adsorbents for the separation and removal of thorium from aqueous solution. The structure and chemical properties of the as-prepared adsorbents were characterized in detail via scanning electron microscopy-energy-dispersive X-ray spectroscopy (SEM-EDX), Fourier transform infrared spectrometry (FT-IR), X-ray photoelectron spectroscopy (XPS), pH value at the point of zero charge (pH PZC ) and thermogravimetric (TG) analysis. Based on the adsorption studies, the magnetic gamma-ferric oxide (γ-Fe 2 O 3 ) and polydopamine (PDA) cofunctionalized fungal microspheres (FPFMs) exhibited excellent adsorption performance for thorium and could represent convenient agents for the removal and recovery of thorium. The equilibrium adsorption data for the FPFMs were well fitted by the Langmuir model, and a high maximum thorium adsorption capacity of 326.346 mg·g −1 was obtained. The thermodynamic parameter values (Δ H 0 > 0, Δ S 0 > 0, Δ G 0 < 0) demonstrated that the thorium adsorption process was feasible, endothermic and spontaneous in nature. This work indicated that FPFMs have great potential to be employed as effective adsorbents for practical industrial water pollution treatment . Importantly, the possible mechanism of thorium adsorption on the homogeneous surface of FPFMs represented a combination of chelation interactions, coordination and ion exchange.
研究领域:
环境科学
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材料科学
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微生物学
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DOI
高影响因子
ACS Applied Nano Materials
·
2022
·
IF 6.14
Qiang Zhang,Zhenghua Qian,Xueyang Liu,Lin Li,Xilei Duan,Ting Yu,Xiaofeng Liu,Yanbo Qiao
In addition to uranium, thorium is a vital nuclear element that has broad potential for future nuclear energy applications. Herein, we report the synthesis of cubic structured ThO2 nanocrystals (NCs) based on the decomposition of their nitrate salt in air and in a molten salt medium. Both the processes yield pure ThO2 NCs with average sizes of <100 nm. The ThO2 NCs synthesized in the molten salt medium exhibit better crystallinity and a larger average size of ∼75.1 nm with a narrow size distribution owing to the high-temperature liquid growth environment. The ceramic sintered from the salt-derived ThO2 NCs exhibits a considerably higher relative density of 94.6% and similar thermal properties compared with the ceramic fabricated from fine nanopowders (<10 nm) obtained from direct thermolysis of metal nitrate. This study shows that thermal decomposition in a molten salt medium could be an efficient method for producing highly crystalline metal-oxide NCs of thorium-based fuels used in nuclear energy applications.
研究领域:
材料科学
·
核能工程
·
化学合成
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DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Dongqiao He,Shunyan Ning,Juan Liu,Shichang Zhang,Lifeng Chen,Yang Xu,Zongyu Feng,Mohammed F. Hamza,Yuezhou Wei
Energetic particles released by the decay of trace radioactive impurities thorium (Th) and uranium (U) in high-purity rare earth (RE) products can cause fatal damage to the performance of rare earth products in high-end fields. To remove trace Th and U from high-purity rare earths in a green and efficient way, a phosphine oxide modified porous silica-polymer based adsorbent (TRPO/SiO 2 -P) was prepared. The characterization results of TG-DSC BET and SEM-EDS indicated that TRPO/SiO 2 -P possessed a high organic loading rate of 30.2 wt%, a good pore structure and large specific surface area. It was shown that TRPO/SiO 2 -P not has excellent adsorption selectivity with SF (Th or U/RE) as high as 15,213 except for SF (Th or U/Sc) = 33.25, but also very fast adsorption kinetics with equilibrium obtained in 30 min in 0.1 M HNO 3 . 0.1 M ammonium citrate can desorb Th and U, UP water can desorb Sc. The deep removal of Th and U from rare earth including Sc can be achieved through column experiments. FT-IR, XPS and DFT calculations were corroborated with each other to confirm the selective adsorption mechanism of TRPO, which is mainly coordinated through metals to −P=O, and NO 3 – is involved in the charge balance. The stoichiometric ratios of U(VI), Th(IV) and Sc(III) to TRPO are 1:2, 1:2 and 1:3, respectively. It is a very promising adsorbent for the preparation of high purity rare earth with ultra-low radioactivity.
研究领域:
材料科学
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环境科学
·
核化学
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DOI
高影响因子
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2025
·
IF 1.6
Yang Jie,Li Bo,Luo Ning,Wu Jianrong,Geng Junshan,Cao Qi,Li Qinzhi,Zhang Jinsong
Graphene oxide (GO) has emerged as a promising adsorbent for capturing thorium ions from aqueous solutions. In this work, we demonstrate that the oxidation degree of GO significantly influences thorium adsorption. Five distinct GO samples with carbon-to-oxygen ratios varying from 2.10 to 2.69 were synthesized and subsequently utilized for thorium adsorption experiments. The results showed that thorium adsorption onto all GO samples rapidly equilibrated within 0.5 h, adhering to the pseudo-second-order kinetic model. Moreover, a higher pH significantly boosts thorium adsorption across all GO samples. Notably, only the GO samples with higher oxidation degrees exhibited superior adsorption capacities and were less susceptible to ionic strength variations. The GO sample with the lowest oxidation degree achieved a maximum adsorption capacity of 44.2 ± 9.9 mg g −1 , whereas the most oxidized GO sample reached a value of 240.4 ± 8.3 mg g −1 at pH 2.8.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2023
·
IF 4.4
Hui Xiong,Hua Liang,Ke Dai,Qiang Tian,Xuezhi Dai,Haifeng Su,Guy Royal
Thorium, as a radioactive element, is always associated with rare earth in nature. So it is an exacting challenge to recognize thorium ion (Th 4+ ) in the presence of lanthanide ions because of their overlapping ionic radii. Here three simple acylhydrazones ( AF , AH and ABr , with the functional group fluorine, hydrogen and bromine, respectively) are explored for Th 4+ detection. They all exhibit excellent “turn-on” fluorescence selectivity toward Th 4+ among f-block ions in aqueous medium with outstanding anti-interference abilities, where the coexistence of lanthanide and uranyl ions in addition with other ordinary metal ions have negligible effects during Th 4+ detection. Interestingly, pH variation from 2 to 11 has no significant influence on the detection. Among the three sensors, AF displays the highest sensitivity to Th 4+ and ABr the lowest with the emission wavelengths in the order of λ AF -Th < λ AH -Th < λ ABr -Th . The detection limit of AF to Th 4+ can reach 29 nM (pH = 2) with a binding constant of 6.64 × 10 9 M −2 . Response mechanism for AF toward Th 4+ is proposed based on the results of HR-MS, 1 H NMR and FT-IR spectroscopies together with DFT calculations. This work provides important implications on the development of related series of ligands in nuclide ions detection and future separation from lanthanide ions.
研究领域:
分析化学
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放射化学
·
配位化学
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DOI
PubMed
高影响因子
Nature Communications
·
2025
·Vol. 16
·期 1
·1-12
·
IF 15.7
Hu Kong-Qiu,Wang Jun-Xi,Wu Qun-Yan,Huang Zhi-Wei,Zhou Zhi-Heng,Wang Jin-Dong,Li Xiao-Bo,Yu Ji-Pan,Zhang Zhi-Hui,Mei Lei,Yan Yong-De,Shi Wei-Qun
Clusters have proven useful models to elucidate the correlation between macroscopic properties and microstructures. However, the actinide clusters still remain much less developed compared to the splendid and systematic works of other members of this family. Here we show the synthesis of a tetra-shell mixed-metal cluster [ThO 8 @Th 12 (OH) 24 @Ni 6 (H 2 O) 18 @(sba) 12 ] (IHEP-25, H 2 sba: 2-sulfobenzoic acid) with the strategic introduction of competitive Ni 2+ ions. A cluster-based framework (IHEP-28), featuring a 2D honeycomb network and demonstrating excellent stability, has been constructed through the multistage assembly of IHEP-25, facilitated by the introduction of cationic cluster [Na 4 (OH) 3 (H 2 O) 3 ] + . IHEP-28 acts as a highly effective visible light-driven photocatalyst for CO 2 reduction. This study demonstrates that the incorporation of heterometal ions not only alters the hydrolysis patterns of actinide metal ions, resulting in the formation of new actinide clusters, but also broadens their potential applications.
研究领域:
材料科学
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化学
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环境科学
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产品关联
DOI
PubMed
高影响因子
GEOSTANDARDS AND GEOANALYTICAL RESEARCH
·
2024
·
IF 2.7
Qiuyun Guan,Xudong Guo,Yali Sun,Xiaoming Liu,Shouqian Zhao
A simple method was developed for the determination of REEs, Zr, Hf, Th and U in ultramafic rocks by inductively coupled plasma-mass spectrometry with a combination of RE and UTEVA extraction resins for their separation and pre-concentration. Ultramafic rocks were digested with HNO 3 -HF-HClO 4 and finally turned into 11 mol l −1 HCl solutions together with H 3 BO 3 to remove insoluble fluorides. The removal of matrix elements was achieved during the loading procedure. Following this, REEs on RE resin, and Zr, Hf, Th and U on UTEVA resin were eluted with 10 ml of 0.24 mol l −1 HCl, with recoveries better than 94.4%. This method was validated using reference materials JP-1, DTS-2B, OKUM, UB-N, MUH-1 and DZΣ-2, and the measurement results for target analytes were comparable to literature values, indicating its applicability to the determination of REEs, Zr, Hf, Th and U at ultra-trace level in ultramafic rocks.
研究领域:
地球化学
·
分析化学
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产品关联
DOI
高影响因子
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