JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Yun Tian,Luowen Xu,Shuo Ning,Changfu Wang,Yun Wang,Hao Jiang,Dingzhong Yuan,Fengtao Yu,Yan Liu
Photocatalysis has emerged as a extremely promising green technology for the treatment of uranium-containing wastewater. This study focuses on the fabrication of Ti 3 C 2 T x /Cd 0.8 Zn 0.2 S composites with Schottky junctions through the in-situ growth of Cd 0.8 Zn 0.2 S on Ti 3 C 2 T x nanosheets, enabling efficient photoreduction of U(VI) without the requirement of sacrificial agents. The results demonstrate that the Ti 3 C 2 T x /Cd 0.8 Zn 0.2 S composites achieve remarkable 99.48 % U(VI) reduction efficiency within 60 min in a 100 ppm uranium solution. Furthermore, the removal rate remains above 90 % after five cycles. The formation of Schottky heterojunctions by Ti 3 C 2 T x and Cd 0.8 Zn 0.2 S leads to the generation of an internal electric field that significantly promotes the rapid separation and transfer of photogenerated carriers, thereby enhancing the photocatalytic reduction efficiency of Ti 3 C 2 T x /Cd 0.8 Zn 0.2 S-3:100 (TC/CZS-3:100). A considerable amount of electrons accumulate on Ti 3 C 2 T x via the Schottky barrier, effectively facilitating the reduction of U(VI) to U(IV). As a co-catalyst, Ti 3 C 2 T x enhances the photocatalytic performance and stability of Cd 0.8 Zn 0.2 S. Moreover, the practical application in the waste liquid of rare earth tailings reveals that the removal rate can be as high as 91.24 %. This research is of significant value in the development of effective photocatalysts for the elimination of uranium from wastewater.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2025
·
IF 1.6
Chen Yanan,Sui Wenxuan,Peng Jianbiao,He Xindi,Zhu Kairuo
In this work, through the ball-milling treatment process, the novel micron-engineered Ulva prolifera (m- Ulva ) was prepared and used to remove U(VI) from water. The m- Ulva properties were interpreted by analysis of the morphology structure, specific surface area, functional groups, and composition. The adsorption experimental results testified that the U(VI) adsorption process depends strongly on pH, while followed the pseudo-second-order kinetic model and the Langmuir adsorption isotherm model. The maximum absorption capacity was shown to be 147.06 mg/g at pH 5.0 and 25° C. Based on various characterization, the related adsorption mechanisms mainly encompassed electrostatic attraction, complexation and partial reduction of U(VI). The study presents a green, scalable method to transform Ulva prolifera into low-cost, micron-engineered biomass material for U(VI)-contaminated wastewater cleanup.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2021
·
IF 6.165
Weiwei Chen,Yawen Cai,Zhimin Lv,Xin Wang,Jinghua Feng,Ming Fang,Xiaoli Tan
A magnetic metal organic framework was finely tuned by abundant amine groups (Mag MOF-NH 2 ) for the purpose of improving the U(VI) removal from solution. The Mag MOF-NH 2 displays outstanding removal capacity (80 mg⋅g −1 ) to U(VI) (10 ppm, 400 mL) within 15 min. To illuminate the adsorption mechanism of Mag MOF-NH 2 , the microstructure, the magnetic property, chemical composition of Mag MOF-NH 2 and the reaction system were characterized. The adsorption mechanism was systematically investigated. Equilibrium adsorption experiments verifies the improved adsorption capability from nearly 0 for MIL-101 to 82 mg⋅g −1 for Mag MOF-NH 2 , which could be explained mainly by the interaction between the amine groups and targeted ions. The effect of humic acid (HA) and coexisting ions on the U(VI) adsorption were also investigated. The Ca 2+ and Mg 2+ ions have passive impact on the adsorption and the high pH value can facilitate the process. Mag MOF-NH 2 holds great potential for the practical application owing to the outstanding U(VI) removal and satisfied regeneration in simulative wastewaters.
✓ 已验证
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2016
·
IF 2.567
Kegang Wei,Qingliang Wang,Long Huang,Lei Sun
A mesoporous silica prototype (MSP) was produced by attaching SiO2 colloid to urea formaldehyde resin. Treatment of the MSP using different grafting methods yielded three different amino-functionalized mesoporous silica samples. The materials were characterized by scanning electron microscopy, energy-dispersive spectroscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, 13C nuclear magnetic resonance, zeta potential measurements, and isothermal N2 sorption/desorption. For a 1:2000 solid-to-liquid ratio, all adsorbents could almost completely remove uranyl from sulfate and carbonate solutions of 3.6 mg L–1 U(VI) at pH 3.5 to 5.5 and pH 6.5 to 9.5, respectively. The adsorption equilibrium time was less than 30 min. The adsorption equilibrium curve showed that the maximum sorption capacity was 117 mg L–1 at pH 4.0. Through the experimental adsorption, it was found that the most effective sample could reduce the U(VI) concentration from 3.6 mg L–1 to 0.79 μg L–1 with 99.98% removed. In desorption experiments, 0.1 mol L–1 nitric acid could desorb U(VI) almost completely from the adsorbent. However, this kind of adsorbent is unsuitable for use in high acid or alkaline environments.
✓ 已验证
DOI
高影响因子
iScience
·
2021
·
IF 5.458
Dejun Zeng,Liyong Yuan,Pengcheng Zhang,Lin Wang,Zijie Li,Youqun Wang,Yunhai Liu,Weiqun Shi
HKUST-1@CMC (HK@CMC) composites that show good acid and alkali resistance and radiation resistance were successfully synthesized by introducing carboxymethyl cellulose (CMC) onto the surface of HKUST-1 using a foaming strategy. For the first time, the composites were explored as efficient adsorbents for U(VI) trapping from aqueous solution, with encouraging results of large adsorption capacity, fast adsorption kinetics, and desirable selectivity toward U(VI) over a series of competing ions. More importantly, a hybrid derivative film was successfully prepared for the dynamic adsorption of U(VI). The results show that ∼90% U(VI) can be removed when 45 mg L −1 U(VI) was passed through the film one time, and the removal percentage is still more than 80% even after four adsorption-desorption cycles, ranking one of the most practical U(VI) scavengers. This work offers new clues for application of the Metal-organic-framework-based materials in the separation of radionuclides from wastewater.
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
·
2025
·
IF 4.7
Rui Xu,Huiping Shao,Baoyu Li,Yufeng Zheng,Bing Wang,Juan Zhang,Hongquan Fu,Hejun Gao,Yunwen Liao
Due to its high mobility, biological toxicity, and radioactivity, U(VI) poses a serious threat to ecosystems and human health. To enhance the efficient removal of U(VI) under air atmosphere conditions without sacrificial agents, this work successfully synthesized a highly effective photocatalyst based on COFs featuring symmetric methyl structural units. This was achieved using relatively inexpensive materials as raw materials and leveraging the Schiff base reaction. The dosage of COFs at 0.2 g/L has been shown to achieve a removal efficiency of up to 98 % for 100 mg/L of U(VI). Following 5 cycles, the material maintains a percentage above 90 %, and the COFs exhibit a high degree of selectivity within high-salinity environments. The presence of a symmetric methyl group optimizes the electronic structure, enhances photoinduced charge separation, and improves redox activity. Additionally, it facilitates the generation of H 2 O 2 , which reacts in situ with U(VI) to form the insoluble compound (UO 2 ) O 2 ·2H 2 O. This work presents an innovative method for the cost-effective preparation of efficient non-metallic photocatalysts.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2024
·
IF 3.5
Yanxue Yue,Weiyu Zhu,Alhadi Ishag,Bo Zhang,Yubing Sun
The natural clay mineral was activated using the acid treatment under ultrasonic conditions to improve its adsorption performance. The acid-activated clay (AAC) was investigated to remove Cr(VI) from wasted lubricant and U(VI) from aqueous solution by batch, spectroscopy, and modeling. Batch experiments showed that the isotherms and adsorption kinetics of Cr(VI)/U(VI) on AAC were satisfactorily followed by Frenudlich and the pseudo-second-order model, respectively. The decreased adsorption of U(VI) on AAC with the increase of ion strength indicated the outer surface complexation of U(VI) on AAC. The interaction mechanism of Cr(VI)/U(VI) on AAC was demonstrated to be surface complexation by oxygenated functional groups (e.g., hydroxyl) according to X-ray photoelectron spectroscopy (XPS) analysis. According to fitting of surface complexation models using three approaches, the adsorption of U(VI) on AAC at different pH can be better fitted by the double-layer model compared to the constant-capacitance model and triple-layer model. These findings are great important for the application of acid activated clay in the removal of heavy metals and radionuclides from the environment.
✓ 已验证
DOI
高影响因子
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2023
·Vol. 332
·期 6
·1743-1754
·
IF 1.6
Zhu Kaihao,Xian Han,Peng Lin,Wang Shuiyun,Chen Chunning,Liu Jinxiang
A molybdenum disulfide/biochar (MoS 2 /BC) composite was synthesised by a facile hydrothermal process and used for the adsorption of U(VI) from aqueous solution through batch experiments. Results showed that MoS 2 /BC exhibit a saturated adsorption capacity of 451.3 mg/g at pH = 5, t = 60 min, T = 298 K, M/V = 0.02 g/L, C U(VI) = 10 mg/L, which was higher than that of MoS 2 and biochar. The process of MoS 2 /BC for U(VI) adsorption was better simulated via the pseudo-second-order kinetic model ( R 2 = 0.999) and Langmuir isotherm model ( R 2 = 0.999). The adsorption mechanism of U(VI) includes chemical adsorption, electrostatic attraction, surface complexation of oxygen-containing functional groups, cation- π bond and coordination of S group. After five adsorption–desorption experiments, the elimination rate remained above 80%.
✓ 已验证
DOI
高影响因子
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2023
·Vol. 332
·期 4
·1303-1314
·
IF 1.6
Xiong Lingshan,Wang Youqun,Cui Wenzheng,Chen Lei,Luo Qie,Cao Xiaohong,Liu Yunhai
Amorphous titanium phosphates (ATP) doped with NH 4 + , K + , Na + , and Li + ions (ATP-M, M = NH 4 , K, Na, and Li) were prepared by a co-precipitation method. The SEM&EDS, TGA, XRD characterizations displayed that ATP-M was successfully synthesized, and the doping of NH 4 + , K + , Na + , and Li + ions did not change the crystal form of ATP. The results revealed that the optimum pH value for U(VI) extraction on ATP-M was determined to be 5.0. Moreover, the saturated adsorption capacity obtained by the Langmuir equation for ATP-NH 4 , ATP-K, ATP-Na, and ATP-Li was 505.1, 366.1, 273.3, and 144.1 mg g −1 , respectively. Furthermore, the interaction between ATP-M and U(VI) was discussed. In short, ATP-NH 4 may be an effective adsorbent to remove of U(VI) in wastewater due to its high adsorption ability.
✓ 已验证
DOI
高影响因子
PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES
·
2024
·Vol. 23
·期 4
·651-664
·
IF 2.7
Wu Zhiwen,Xie Zongbo,Zhu Ye’an,Wang Bo,Nie Yidan,Qiu Jialin,Le Zhanggao
Manufacturing high-performance and reusable materials from radioactive uranium-containing wastewater remains a significant challenge. Herein, a supramolecular self-assembly strategy was proposed, using melamine and cyanuric acid as precursors and using intermolecular hydrogen bond force to form carbon nitride (CN–D) in different solvents through a single thermal polymerization strategy. Supramolecular self-assembly method is a promising strategy to synthesize a novel carbon nitride with molecular regulatory properties. In addition, 98% of U(VI) in wastewater can be removed by using CN–D for 60 min under visible light. After five cycles of recycling, more than 95% of U(VI) can still be reduced, indicating that it has good recyclability and reusability. This study not only provides an efficient photocatalytic method of uranium reduction, but also provides a new method for self-assembly synthesis.
✓ 已验证
DOI
高影响因子
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2024
·Vol. 333
·期 4
·1949-1961
·
IF 1.5
Zhou Haiyan,Dai Ying,Zou Rong,Wang Yusheng,Dai Wei,Li Zhuyao,Tao Qinqin,Liu Zhirong
For highly efficient solid-liquid separation after uranium adsorption from acidic wastewater, layered metal sulfide@polymer nanofibers, KMS-1@PVA/PAA, KMS-2@PVA/PAA, and KTS-3@PVA/PAA, were successfully synthesized. The outcomes of batch adsorption experiments revealed that uranium(VI) removal on three nanofibers exhibited dependency on pH and almost no dependency on ionic strength. The membrane separation experiment indicated that the adsorption capacities for KMS-1@PVA/PAA, KMS-2@PVA/PAA, and KTS-3@PVA/PAA were 234.78 mg/g, 254.18 mg/g, and 205.05 mg/g, respectively, ranking competitive position among the reported fiber materials. The determined kinetics, isotherms and thermodynamic parameters proved the layered metal sulfide@polymer nanofiber were prone to adsorb uranium in acidic environment.
✓ 已验证
DOI
高影响因子
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2025
·
IF 1.6
Zhang Yong,Liu Xuan,Jiang Kexing,Feng Jiaqi,Liu Yujia
In this study, peanut shell was used as the raw material to synthesize activated biochar-MnO composite (PSBC-K) using KMnO 4 as an activating agent. The Q max of U(VI) by PSBC-K was 569.8 mg/g, which was 3.9 times the Q max of PSBC (147.3 mg/g). Besides, PSBC-K exhibited good selectivity for U(VI) and excellent cycling performance. The removal mechanisms of U(VI) for PSBC-K were primarily dominated by electrostatic interaction, coordination reaction, precipitation and ion exchange. Overall, this work presented a sustainable and straightforward method for creating a novel adsorbent for efficient U(VI) separation.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）