SCIENCE OF THE TOTAL ENVIRONMENT
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2024
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IF 8.2
Min Wang,Shu Zhang,Qi Li,Yuanpeng Li,Enzhe Duan,Caimei Wen,Shujun Yu,Xiangxue Wang
Extracting uranium from seawater not only reduces radioactive contamination in seawater but also provides a source of uranium energy. However, due to the low concentration of uranium in seawater and the high salinity of seawater, extraction of uranium from seawater is challenging. In this work, we demonstrated a simple strategy to synthesize Fe-doped MXene (Fe@Ti 3 C 2 T x ) via a hydrothermal method and applied for uranium enrichment in seawater. The Fe@Ti 3 C 2 T x exhibited excellent adsorption performance in high salinity environments. The removal capacity of Fe@Ti 3 C 2 T x was determined to be 526.6 mg/g for UO 2 (CO 3 ) 2 2− at 328 K with quick reaction equilibrium (∼ 30 min). Kinetic and thermodynamic analyses of UO 2 (CO 3 ) 2 2− elimination process on Fe@Ti 3 C 2 T x surface revealed it to be a spontaneous and endothermic single-phase elimination process. FT-IR and XPS analyses further indicated that the removal mechanism of UO 2 (CO 3 ) 2 2− by Fe@Ti 3 C 2 T x was surface complexation. Our study suggests that Fe@Ti 3 C 2 T x can provide a feasible solution for uranium enrichment in seawater.
研究领域:
材料科学
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环境科学
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PubMed
高影响因子
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
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2025
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IF 1.6
Ran Maobiao,Gou Xiaoliang,Wang Pingping,Chen Shunzhang,Shu Xiaoyan,Liu Yi,Zhang Shengdong,Lu Xirui
In this study, the pollucite solidified form was hydrothermally synthesized by metakaolin, non-radioactive CsCl, and NaOH to immobilize CsCl in the radioactive molten salt waste. At 200 °C, the immobilization ratio of Cs increased with the enhancement of reaction system alkalinity by NaOH, but it was also accompanied by the formation of sodalite. Excessive Si was adverse to the crystallization of the solidified form. In addition, the proportion of Cs in the solidified form was constrained by the substitution competition between Cs + and Na + , which was affected by reaction time. The nucleation and growth of pollucite mainly occurs from 2 to 4 h, and the CsCl immobilization ratio could reach 36.27 wt .% at 6 h. The thermal weight loss rate of the solidified form within 1000 °C was less than 4 wt .%, and the normalized leaching rate of Cs was 5.05 × 10 –5 g m −2 d −1 for 14 d, showing reliable thermal stability and chemical durability. Graphical abstract
研究领域:
材料科学
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环境科学
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Water
·
2024
·Vol. 16
·期 6
·848
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IF 3
Xinyu Wang,Hossein Ghanizadeh,Shoaib Khan,Xiaodan Wu,Haowei Li,Samreen Sadiq,Jiayin Liu,Huimin Liu,Qunfeng Yue
Removing organic pollutants from wastewater is crucial to prevent environmental contamination and protect human health. Immobilized enzymes are increasingly being explored for wastewater treatment due to their specific catalytic activities, reusability, and stability under various environmental conditions. Peroxidases, such as horseradish peroxidase (HRP) and myoglobin (Mb), are promising candidates for immobilized enzymes utilized in wastewater treatment due to their ability to facilitate the oxidation process of a wide range of organic molecules. However, the properties of the carrier and support materials greatly influence the stability and activity of immobilized HRP and Mb. In this research, we developed immobilized HRP and Mb using support material composed of sodium alginate and CaCl2as carriers and glutaraldehyde as a crosslinking agent. Following this, the efficacy of immobilized HRP and Mb in removing aniline, phenol, and p-nitrophenol was assessed. Both immobilized enzymes removed all three organic pollutants from an aqueous solution, but Mb was more effective than HRP. After being immobilized, both enzymes became more resilient to changes in temperature and pH. Both immobilized enzymes retained their ability to eliminate organic pollutants through eight treatment cycles. Our study uncovered novel immobilized enzyme microspheres and demonstrated their successful application in wastewater treatment, paving the way for future research.
研究领域:
生物化学
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环境科学
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INDUSTRIAL CROPS AND PRODUCTS
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2026
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IF 6.4
Zhengyun Xie,Like Ning,Farzad Seidi,Shicun Jin,Zhulan Liu,Chao Liu,Huining Xiao
Functionalized nanosilica is used to carry agrochemical IAA via disulfide bonds. • Under GSH environment, SiO 2 -S-S-IAA exhibits significant redox responsiveness. • The -SH on the surface of SiO 2 can form complexes with various heavy metal ions. • Dual-functional nanocarrier allows sustained IAA release and capture of metal ions. Owing to the low efficiency and lack of target specificity in the application of agrochemicals, e.g., plant growth regulators, the resulting environmental pollution and resource waste have raised enormous concerns over environments and human health. Herein, a redox-responsive nanosilica carrier (SiO 2 -S-S-IAA) was developed for efficient release of 3-indoleacetic acid (IAA), by functionalizing the surface of nanosilica with 3-mercaptopropyltrimethoxysilane (MPTMS), followed by the covalent coupling of IAA via redox-cleavable disulfide bonds. Under the high level of glutathione (GSH) in the plant microenvironment, IAA was released in a controlled way through disulfide bond cleavage, thus achieving redox response. In vitro controlled-release experiments confirmed that the release amount of IAA was significantly higher in the environment of 10 mM GSH, more than 10 folds at pH 5.5. Meanwhile, the thiol groups generated after release could form complexes with various heavy metal ions (Hg 2+ , As 3+ /As 5+ , Cd 2+ , Pb 2+ ), with the highest adsorption efficiency towards Hg 2 + up to 57.95%. More importantly, in planta experiments under cadmium stress have demonstrated that SiO 2 -S-S-IAA not only promoted rice seedling growth but also significantly reduced Cd 2+ accumulation in shoots, effectively inhibiting its transfer to edible parts. This work establishes a dual-functional nanocarrier platform that combines targeted agrochemical delivery with in situ heavy metal immobilization, offering a promising strategy for sustainable and precise crop protection. Download: Download high-res image (185KB) Download: Download full-size image
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BIORESOURCE TECHNOLOGY
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2026
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IF 8.2
Yuchong Liu,Guan Wang,Changwen Zhao,Wantai Yang
Visible-light graft polymerization enables topology-controlled polymer brushes. • Linear-bottlebrush brush achieves highest enzyme loading (0.25 mg/cm 2 ). • Immobilized cellulase retains 70 % activity after 8 reuse cycles. • LB-immobilized cellulase enables SSF with 0.6 g/L ethanol and 8-cycle reusability. By providing a flexible microenvironment, immobilization of cellulase on polymer brushes represents an effective strategy to improve the interactions of cellulase with the substrate in biomass conversion. However, manipulation of polymer brush morphology remains largely unexplored, owing to the lack of an effective synthesis strategy. Herein, we developed a versatile visible-light-induced graft polymerization strategy to precisely fabricate three types of polymer brushes with well-defined topologies on low-cost low-density polyethylene (LDPE) films. Benefiting from its unique three-dimensional high-density topology, linear-bottlebrush (LB) architecture exhibited a unique 3D high–density topology and achieved the highest enzyme loading capacity (0.25 mg/cm 2 ) and favorable enzymatic activity. The reusability was also demonstrated with 70 % of its initial activity remained after 8 reuse cycles for LB architecture. Furthermore, potential of LB brush-based immobilized cellulase in simultaneous saccharification and fermentation (SSF) of corncob for bioethanol production was demonstrated with its efficiency and reusability in practical biomass conversion processes. This study provides a synthetic methodology for constructing complex biointerfaces and establishes clear structure–property relationships, offering design principles for high-performance immobilized enzyme systems and advancing sustainable biomanufacturing. Download: Download high-res image (145KB) Download: Download full-size image
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JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
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2026
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IF 4.4
Chen Zhou,Anxin Lin,Tenghui Tang,Min Zhang,Longqiang Xiao,Rui Zhao,Linxi Hou
A series of fluoroalkyl-functionalized and polymerizable photoinitiators were designed by integrating interfacial enrichment and covalent anchoring into a single molecular platform. • Fluoroalkyl segments induce spontaneous interfacial enrichment, thereby effectively enhancing resistance to oxygen inhibition during UV photopolymerization. • Polymerizable double bonds enable covalent incorporation into polymer networks, significantly suppressing post-curing migration of residual photoinitiators. • A structure, property, and kinetics relationship dependent on fluorine content was established, providing design principles for high-performance photoinitiators. UV photopolymerization is widely used in coatings, 3D printing, and biomedical materials due to its high efficiency and low energy consumption. However, Irgacure 2959, a representative Type I photoinitiator, suffers from oxygen inhibition and migration of residual species, limiting its practical applications. Herein, Irgacure 2959 was used as a molecular scaffold and structurally modified to construct a series of fluoroalkyl-functionalized polymerizable derivatives (2959-IA-nF, n = 0–5) by introducing vinyl polymerizable groups and tunable fluoroalkyl segments, enabling coupled interfacial transport and covalent immobilization. The effects of fluorine content on photolysis behavior, interfacial migration, oxygen tolerance, polymerization kinetics, and extraction stability were systematically investigated. All fluorinated derivatives exhibit higher photolysis rates than Irgacure 2959. Driven by reduced surface energy, 2959-IA-nF spontaneously migrates to the gas-liquid interface, with increasing migration flux as fluorine content rises, thereby mitigating oxygen inhibition. Polymerization kinetics show a volcano-type dependence on fluorine content, with 2959-IA-3F exhibiting the highest apparent rate constant (0.1209 s −1 ), approximately threefold that of 2959. Vinyl groups enable covalent incorporation into the polymer network, reducing extraction in acetonitrile from 21.43% to <1.5% and decreasing aqueous UV absorbance by over one order of magnitude. Density functional theory reveals lower excitation free energy for 2959-IA-3F, facilitating intersystem crossing and efficient photolysis despite a higher cleavage barrier. The cured films exhibit reduced yellowing, tunable hydrophobicity, and improved elongation at break. This work demonstrates a coupled interfacial transport-reaction strategy for oxygen-tolerant, low-migration photoinitiators. Download: Download high-res image (159KB) Download: Download full-size image
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JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
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2025
·Vol. 334
·期 2
·1287-1297
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IF 1.6
Li Yifan,Cao Shuang,Yang Qingming,Wang Yuannuo,Wang Jingyang,Jiao Caishan,Zhang Meng,Zhang Lei
The removal of Cs and Sr from high level radioactive waste is very important for ecological protection. However, simultaneous immobilization of Cs and Sr is rarely reported. In this work, a perovskite structure CsSr 2 Ta 3 O 10 was synthesized by molten salt method. CsSr 2 Ta 3 O 10 has good thermal stability up to 900 °C at least. Under the γ irradiation of Co-60, most of the material maintained its structural integrity. CsSr 2 Ta 3 O 10 demonstrates a wide range of pH durability, where Cs is stable in the pH range from 4 to 12 and Sr from 2 to 12. Its frame structure remains stable in the pH range from 2 to 12 and will not be decomposed. Further sintering of CsSr 2 Ta 3 O 10 ceramic waste forms results in a high density of 93% − 95%. Moreover, leaching experiments conclude that the long-term leaching rates of Cs and Sr begin to stabilize after 14 days, reaching the order of 10 0 and 10 −3 g·m −2 ·d −1 . These results provide a possibility for the simultaneous immobilization of Cs and Sr.
研究领域:
材料科学
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环境科学
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高影响因子
Coatings
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2025
·Vol. 15
·期 6
·631
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IF 2.8
Qiang Gao,Yajie Wang,Jianing Wang,Jiahao Sun,Jiqiang Cao,Zengying Liu,Xiang Liu
This research employed triethylenetetramine as a chelating agent to successfully synthesize a chelating-functional waterborne polyurethane (CWPU) dispersion by adjusting the ratio of hard and soft segments and optimizing the molecular structure through the use of a chain extender. This allowed for the establishment of a stable WPU/Ag composite emulsion system upon the addition of silver nitrate, and during the film formation process, the reducing properties of polyols were employed to in situ reduce Ag+, resulting in the formation of silver nanoparticles (AgNPs). Structural characterization analyses, including FTIR and XRD, verified that the reduced AgNPs were evenly distributed in the WPU matrix, and SEM observations revealed the presence of reduced AgNPs on the film. Further, contact angle and TG tests were performed to explore the impact of AgNPs on the hydrophilicity and thermal stability of the film. By applying WPU/Ag to cotton fabric through a padding finishing technique, the fabric retained a breathability of over 64.7% and mechanical properties exceeding 70.9%. Following 20 standardized washes, the antibacterial efficacy against Escherichia coli and Staphylococcus aureus remained above 99%. Even after undergoing 1200 abrasion tests, the antibacterial efficacy for both bacteria was sustained at over 93%, and the antibacterial rate continued to exceed 99% after a 6 h immersion in hot water. These findings suggest that the composite material possesses outstanding thermal stability, durability, and mechanical characteristics. This research offers a new methodology for the development of textiles that combine both usability and prolonged antibacterial efficacy.
研究领域:
材料科学
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纺织工程
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纳米技术
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高分子化学
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抗菌材料
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高影响因子
CONSTRUCTION AND BUILDING MATERIALS
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2025
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IF 8
Yu Huang,Jiangnan Peng,Mingyan Qin,Wen Xiong,Chao Wang,Yaxin Qin,Wei Liu
The valorization of construction solid wastes into functional materials presents a dual opportunity for environmental remediation and sustainable infrastructure development. Herein, we successfully repurposed asphalt-based solid waste into calcium-enriched carbonaceous adsorbent through sequential pyrolysis (C Asp ) and ball-milling (C Asp, bm ) techniques for 4 h at a constant rotational speed of 550 rpm. It was noteworthy that both the C Asp and C Asp, bm demonstrated an ultrafast adsorption efficiency for Cd(II), achieving equilibrium within 5 min. The maximum adsorption capacity (207.54 mg/g) was obtained through pyrolysis at 900 ℃ followed by ball-milling (C Asp, bm -900). The adsorption process closely followed the pseudo-second-order kinetic model and Freundlich isotherm, characterized by an ultrafast adsorption phase succeeded by a slower equilibrium stage. The adsorption process was spontaneous and involved multilayer adsorption, primarily governed by chemisorption mechanisms. The analysis of ions species and characterizations revealed that both pyrolysis and ball-milling processes enhanced the removal efficiency of Cd(II) by altering the surface composition and functional groups, specific surface area, and surface defects of C Asp and C Asp, bm . The primary mechanisms for Cd(II) adsorption on C Asp, bm -900 included ion exchange with Ca(II), precipitation in conjunction with CO 3 2- , and electrostatic attraction. Unfortunately, the presence of Cu(II) and Pb(II) significantly inhibited the removal of Cd(II), attributed to their markedly higher electronegativity. This study proposes a promising strategy for fabricating cost-effective and high-efficiency adsorbents through the upcycling of waste asphalt into functional materials, thereby enabling the effective removal of heavy metals from wastewater.
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高影响因子
COLLOIDS AND SURFACES B-BIOINTERFACES
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2025
·
IF 5.6
Yanbin Xiong,Junnan Cui,Tong Lou,Pan Cao
Biofouling due to marine microorganism adhesion poses significant challenges for marine vessels, necessitating innovative antifouling solutions. This study aimed to investigate the antifouling performance of an antimicrobial peptides (AMPs) immobilized on dopamine-modified stainless steel (SS) surfaces, as a novel approach for antifouling applications. Herein, dopamine was utilized to form a modification layer on SS, subsequently immersed in AMPs solution to create SS-DA-A samples. The surface characteristics were characterized through X-ray photoelectron spectroscopy (XPS), field emission scanning electron microscopy (FESEM), contact angle measurement instrument, fourier transform infrared spectroscopy (FTIR), and confocal laser scanning microscopy (CLSM). Antimicrobial properties were assessed using plate counting, measuring bacterial adhesion, and optical density value, while algal resistance was determined through SEM and CLSM methods, specifically assessing the coverage by algae. The results demonstrated the successful modification of the SS surface, characterized by FTIR peaks corresponding to AMPs, and a significant reduction in contact angle with the introduction of dopamine. Notably, the SS-DA-A surface exhibited enhanced antimicrobial efficacy against Vibrio natriegens ( V. natriegens ), Staphylococcus aureus ( S. aureus ), and Escherichia coli ( E. coli ), with a marked reduction in biofilm formation, and C. pyrenoidosa and P. tricornutum coverage decreased by approximately 96.46 % and 91.61 %, respectively. Molecular dynamics simulation results reveal that antimicrobial peptides interact with the bacterial phospholipid bilayer, disrupting bacterial integrity and thus achieving surface antimicrobial activity. This study effectively demonstrates that dopamine facilitates the successful immobilization of AMPs on SS surfaces, leading to significantly improved antibacterial, anti-algal, and biofilm resistance properties, and offers a promising new strategy for antifouling technology in marine settings.
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高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
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2025
·
IF 3.5
Xiaoliang Gou,Maobiao Ran,Shunzhang Chen,Yi Liu,Guoqing Gu,Xiaoyan Shu,Fen Luo,Congcong Ding,Xirui Lu
Safe management of chloride-rich radioactive salt waste produced during molten-salt dry reprocessing of spent nuclear fuel is essential for the sustainable deployment of advanced nuclear energy systems. Although 90 SrCl 2 represents only a minor mass fraction, its high specific activity and decay heat dominate short-term thermal management. In this work, a low temperature hydrothermal synthesis of Sr 5 (PO 4 ) 3 Cl effectively immobilized Sr and about 10 % of Cl, while the remaining Cl was released as NaCl. Over a 10-h hydrothermal process, the step-like growth of crystalline and partially disordered domains promotes enhanced crystallinity and increased particle size of the Sr 5 (PO 4 ) 3 Cl solidified form, thereby improving its chemical durability. The well-crystallized product exhibits a mass loss of less than 1.8 wt .% at 1000 °C, and normalized leach rate of Sr 2+ is 3.5 × 10 −6 gm −2 d −1 after 28 d in deionized water at 90 °C. Reliable thermal and chemical stability confirm that low-temperature hydrothermal processing is an energy-efficient strategy for conditioning 90 SrCl 2 chloride wastes prior to geological disposal.
研究领域:
核废料管理
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材料科学
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放射化学
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环境修复
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无机合成
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Huanhuan Dong,Xudong Wu,Lei Li,Ruixiang Wang,Qingqing Liu,Yihao Wang,Xun Yang,Mao Hu,Tao Chen
Advances in nuclear energy have led to steady accumulation of radioactive uranium wastewater, requiring the worldwide implementation of safe and efficient disposal methods. Adsorption has become a viable solution for purifying uranium-contaminated wastewater and recovering uranium resources due to its efficiency, environmental compatibility, and simplicity. This study utilized konjac glucomannan’s (KGM) gel properties to create a ZIF-8@KGM aerogel. Liquid nitrogen-induced rapid directional freezing combined with KGM’s exceptional plasticity yielded an aerogel with a uniform layered structure and directional channels. ZIF-8 (2-Methylimidazolezincsalt) particles are dispersed uniformly within the aerogel pores, significantly improving adsorption site accessibility. Compared with ZIF-8, the [email protected] aerogel achieved improved kinetics and adsorption capacity for uranium separation. After 90 min in a 200 mg/L acidic U(VI) solution, it achieved 96.4 % removal efficiency and a maximum capacity of 687.8 mg/g. Mechanistic studies revealed synergistic adsorption: KGM’s oxygen-containing functional groups coordinated with uranyl ions, together with the nitrogen-containing groups and hydroxyl Zn(Ⅱ) sites on ZIF-8 particles. Overall, this approach provides a promising strategy for uranium wastewater remediation that exhibits broader applicability in water treatment.
研究领域:
环境科学
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材料科学
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核工程
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化学工程
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水处理技术
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高影响因子
危险品化学品经营许可证（带存储）