CHEMICAL ENGINEERING JOURNAL
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2025
·
IF 13.2
Qing Liu,Huifang Xing,Yunze Zhao,Qingfen Liu,Qiyu Meng,Huizhou Liu,Liangrong Yang
Titanium (Ti)-based lithium ion sieves (LISs) have advantages such as structural stability and environmental friendliness, making them promising for lithium extraction from salt lake brine. However, the adsorption kinetics and capacity of granulated Ti-based LISs are very limited, which restricts their industrial applications. Inspired by biomimetic channels for Li transport, herein, a Ti-based LISs membrane with fast kinetics and high adsorption capacity has been proposed. Firstly, a flower-shaped Li 2 TiO 3 (LTO) assembled by nanosheets with a superhydrophilic surface was prepared for the first time. Thereafter, the LTO was compounded into poly (oligo (ethylene glycol) methacrylate) (POEGMA) through UV-curing to obtain the PP@POEGMA/LTO membrane. Due to the lithiophilic properties of oligoethers in POEGMA, Li + ions could pass through the inner pathway preferentially and rapidly. Furthermore, the abundant hydroxyl functional groups in POEGMA enhanced the hydrophilicity of membrane, facilitating the mass transfer of ad/desorption. After 0.1 mol·L −1 HCl elution to obtain PP@POEGMA/HTO composite membrane, the adsorption equilibrium of membrane was found to achieve within 4 h, as fast as that of the powders HTO. Meanwhile, the equilibrium adsorption capacity reached 32.19 mg·g −1 . Dynamic adsorption experiments revealed that the composite membrane maintained a lithium removal rate of over 80 % within 30 min, with the adsorption capacity stabilizing at 20 mg·g −1 after five cycles. As for selective adsorption experiments in the Qarhan salt-lake brine and natural seawater, PP@POEGMA/HTO membrane showed a Li/Mg separation factor of 86.4 in spite of the Mg/Li as high as 249, and Li/Na separation factor of 14,508 in spite of the Na/Li as high as 60674, respectively. This work provides a straightforward approach for LISs membrane to achieving high-efficiency recovery, promoting their application in practical industries.
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高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Xuanxuan Huang,Rui Huang,Qian Zhang,Zhaohong Zhang,Jinlong Fan,Jintian Huang
With the gradual increase in environmental awareness and the growing demand for food safety, sustainable and environmentally friendly cellulose-based materials have become a promising alternative to petroleum-based plastics. However, in practice, packaging materials prepared from cellulose-based materials still have some unsatisfactory properties, such as monofunctionality, low transparency, and lack of UV shielding, antibacterial or antioxidant properties. Herein, a novel synthetic strategy is proposed in this paper, specifically, tannic acid (TA), a green natural extract with antibacterial and antioxidant properties, is used as a plasticizer and cross-linker, and oxidized cellulose nanocellulose (TOCN) modified with folic acid (FA) grafting is blended with TA, and cellulose-based biomass thin films with ultraviolet (UV) shielding, antibacterial, and antioxidant properties have been successfully prepared by using a simple vacuum-assisted filtration. The experimental results showed that the films could completely block ultraviolet light at wavelengths of 200–400 nm while providing 81.47 % transparency in the visible spectrum, while the introduction of TA conferred excellent antibacterial and antioxidant capabilities with antioxidant activity of up to 95 %, and also resulted in films with excellent mechanical properties. Therefore, this work provides ideas for the design and manufacture of competitive biomass green packaging materials, laying the foundation for future applications in food packaging.
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PubMed
高影响因子
ACS Sustainable Chemistry & Engineering
·
2024
·
IF 7.1
Xueqian Li,Junying Li,Xiaoying Shen,Mengyao Cao,Yu Wang,Wansong Zhang,Yanglei Xu,Zhe Ling,Sheng Chen,Feng Xu
Light-management films that can control solar transmission through themselves, especially those based on renewable and biodegradable materials, are significant for diverse photon-related applications such as energy-efficient buildings, photovoltaics, and optoelectronic devices. Herein, composite transparent films with adjustable haze and UV-blocking capabilities are developed based on the main components of lignocellulosic biomass (cellulose and lignin), and their promising applications in light management are also demonstrated. Carboxymethyl cellulose (CMC) with a good film-forming property is used as the substrate matrix, and cellulose nanocrystals (CNC) with a nanoscale rod-like shape are used as functional fillers. The obtained CMC–CNC composite films exhibit adjustable optical properties (high transparency of >90% and haze of 3.17–13%) and surprisingly enhanced mechanical strength and thermal stability when compared with pure CMC films. Furthermore, lignosulfonates (LS), as industrial lignin products, are combined to endow the CMC–CNC–LS composite films with excellent UV-shielding performance (98.17% UVB and 89.38% UVA), but they well maintain the high transparency and haze. We demonstrate that the composite films are able to avoid color changes of UV test cards by shielding UV light and that they achieve uniform illumination when light transmits through, indicating their promising potential for practical applications in light management. In addition, the effect of CNC and LS contents on the morphological, chemical, mechanical, and thermal properties of composite films is investigated. Our work provides novel insights into the fabrication of sustainable light-management films based on lignocellulose-derived materials by tuning their light-scattering and light-absorbing properties.
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高影响因子
PROGRESS IN ORGANIC COATINGS
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2025
·
IF 7.3
Yanlin Zhu,Wen Zhou,Huimin Wu,Hanzhi Zhang,Xiangjian Meng,Xuehu Men
With the advancement of nuclear industry driving extensive applications of peelable decontamination coatings in nuclear facility decommissioning and emergency situations, current coatings face challenges in balancing cohesion-adhesion properties, as their high peel strength prevents complete removal from high surface energy substrates. In this work, a double crosslinking network strategy is developed, integrating flexible Poly(vinyl alcohol) (PVA) and chitosan polycondensation crosslinked long chains with rigid acrylic and acrylamide radical crosslinked short chains, synergistically enhancing waterborne peelable coating strength via energy dissipation mechanisms. At the same time, the complexation between -OH and -COO − groups on the molecular chain and Cs + is exploited to achieve efficient decontamination effect. The prepared peelable coating demonstrates some advantages, including multiple substrate applications with rapid curing rate, enhanced mechanical strength compared to single-crosslinked network coatings (with a tensile strength of 2 MPa and an elongation at break of 410 %), and low interfacial adhesion (with a peel strength <2.2 N/cm on cement surfaces). Remarkably, it achieves high decontamination efficiencies of 99.70 % on glass surfaces, 99.68 % on stainless steel surfaces and 92.40 % on concrete surfaces, while possessing robust solvent resistance. Therefore, the prepared decontamination coating has excellent potential with widespread application prospects in the field of radioactive surface decontamination.
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高影响因子
DESALINATION
·
2017
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IF 5.527
Mali Zhou,Xu Chen,Jiefeng Pan,Shanshan Yang,Bo Han,Lixin Xue,Jiangnan Shen,Congjie Gao,Bart Van der Bruggen
To improve the dimensional stability of electrodialysis membranes, a series of crosslinked sulphonated polysulfone cation exchange membranes with different degrees of sulfonation were prepared by a simple and low energy consumption method, namely UV-crosslinking. The crosslinking reaction was performed by UV irradiation and using 2,4,6-trimethylbenzoyl-diphenyl-phosphine oxide (TPO) as photoinitiator and trimethylolpropane tri-acrylate (TMPTA) as crosslinker . The scanning electron microscopy (SEM) and atomic force microscopy (AFM) results showed that crosslinking leads to a denser and smoother surface. Compared with the swelling and water uptake results of pristine membranes , the crosslinked membranes exhibited an enhanced dimensional stability, especially at higher temperature (40–70 °C). The thermogravimetric analysis and measurement of mechanical properties indicated that the crosslinked membrane has better mechanical and thermal properties. The electrochemical properties were analyzed, and the membrane after crosslinking showed a better ion permselectivity . When applied in electrodialysis and compared to the commercial membrane with a NaCl removal ratio of 75.6%, the crosslinked membranes showed a more efficient performance (NaCl removal ratio = 89.1% for SPSU-60). These improvements showed that the crosslinked membranes can be promising candidates for high-temperature and industrial application.
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高影响因子
POLYMER SCIENCE SERIES B
·
2014
·Vol. 56
·期 6
·855-862
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IF 0.633
Li Hu,Liu Jingcheng,Lin Licheng,Mu Qidao,Sun Xiaoxia,Liu Xiaoya
tert -Butyl acrylate (TBA), benzyl methacrylate (BzMA) and acrylic acid (AA) were used to synthesize prepolymer (PTBA) with carboxyl pendant through free-radical polymerization. Glycidyl methacrylate (GMA) was then added to react with carboxylic acid group of PTBA to form UV-curable copolymer PTBA-G. Proton Nuclear magnetic resonance ( 1 H NMR) and Fourier transform infrared spectroscopy (FTIR) were used to confirm the structure and functional group of prepolymer and copolymer, GPC was employed to determine the molecular weight and polydispersity. Real-time infrared and photo differential scanning calorimetry (photo-DSC) were used to evaluate the UV-curable kinetics of copolymer, thermo-gravimetric analysis (TGA) showed the thermal stability of the copolymers increased as the GMA content increase. When the ratio of GMA and AA was 0.3, it showed excellent resolution of 50 μm by SEM observation.
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高影响因子
PROGRESS IN ORGANIC COATINGS
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2025
·
IF 7.3
Pengyan Dai,Yuanshu Xiao,Jiexiao Wei,Haonan Li,Shuai Li,Lixia Jia
Structural color fabrics, which derive their color from the periodic microstructure of photonic crystals (PCs), face a significant challenge in practical applications due to their poor color fastness. The colloidal arrays are prone to collapse under external mechanical forces such as washing and rubbing. Surface encapsulation with polymer presents a promising solution. However, the prevalent use of commercial adhesives with ill-defined compositions hinders the precise understanding and control over the relationship between material properties and color stability. To address this limitation, this study designed and synthesized the UV-curable waterborne polyurethane (UVWPU) with tailored microphase-separated structures by regulating the NCO/OH molar ratio (R value). The synthesized UVWPU emulsions exhibited a translucent light blue appearance, nanoscale particle size, and excellent stability. The cured films demonstrated high transparency (>98 %), tunable mechanical strength, and good water resistance. These UVWPUs were then applied to encapsulate structural color fabrics fabricated by shear-induced assembly of polymethyl methacrylate (PMMA) microspheres of various sizes. The resulting structural color fabrics maintained vivid, angle-dependent structural colors. More importantly, they exhibited dramatically enhanced color fastness, successfully withstanding 45 min of washing, 100 rubbing cycles, 20 bending cycles, extended storage, and exposure to acidic, alkaline, and saline environments without significant color degradation. This work provides a fundamental and practical approach for developing high-durability structural color textiles.
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高影响因子
SOLAR ENERGY MATERIALS AND SOLAR CELLS
·
2025
·
IF 6.3
Yuedan Wang,Mengjie Li,Yun Lin,Anqi Li,Changhui Li,Mufang Li,Wenwen Wang,Qiongzhen Liu,Dong Wang
In this paper, a high-performance photochromic system with rapid fading was constructed by adjusting the pH of tungstate, introducing dopants, reducing agents and polydimethylsiloxane (PDMS) coatings. In addition, the chromaticity of photochromic materials can be precisely controlled by changing the doping and reducing agent content. Continuous large-scale fabrication of novel photochromic fiber/fabric using dip coating and wet spinning has been proposed. The photochromic fibers/fabric exhibit significant color contrast (ΔE = 40.2), rapid color switching (5 s), fast fading time (10 min), good cycling stability (20 times), as well as long color-retention (7 days) under UV/visible light irradiation. Photochromic fibers after packaging with PDMS have excellent water resistance and maintain good photochromic properties even after washing (20 cycles) when exposed to water, ethanol, and detergent solutions. The photochromic fibers can be used as wristbands or embroidered on various textiles as wearable UV indicators. With the increase of UV dose, it has real-time and sensitive color rendering, which provides early warning for high dose UV radiation. The color-changing mechanism of photochromic fabric has been studied. In addition, photochromic solution has fast UV response and fading ability, which can realize the application of rewritable ink, color-changing film. Notably, its preparation process has the advantages of low cost, environmental friendliness and large-scale production, providing a new solution for smart sensing and anti-counterfeiting application.
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高影响因子
POLYMER DEGRADATION AND STABILITY
·
2025
·
IF 7.4
Xiaodong Jin,Xiangyun Feng,Shufan Song,Shibing Sun,Wanfu Wang,Yichen Chen,Wufei Tang
An efficient flame retardant coating was developed for rigid polyurethane foam (RPUF) through the integration of layer-by-layer (LBL) self-assembly and UV curing. The RPUF surface was first activated by UV ozone to enable covalent grafting of branched polyethyleneimine (BPEI) as the initial layer. Subsequently, L-serine intercalated Kaolinite (K*aol), diethylene triamine penta (methylene phosphonic acid) (DTPMPA), and BPEI were alternately assembled to form two bilayers, followed by the application of a UV curing phosphorus/nitrogen-containing topcoat to construct a dense protective network. The optimized sample (R-K* 5 D 30 -P 8 N 3 ) exhibited a limiting oxygen index (LOI) of 36.9 % and achieved a V-0 rating in UL-94, accompanied by a 31.8 % reduction in peak heat release rate (pHRR) and a 30 % decrease in total smoke production compared to neat RPUF. Even after 12 h of water leaching, it maintained a LOI of 34.0 % and displayed a 300 % increase in time to ignition and 18.6 % reduction in pHRR compared with neat RPUF during cone calorimetry. The rapid formation of continuous physical barriers accounted for the enhanced flame retardancy, while UV curing immobilized the coating layers, imparting long-term water resistance. This facile “LBL plus UV curing” strategy provides an effective pathway toward robust, low-smoke, and flame retardant coatings for polymeric foams.
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高影响因子
Environmental Pollutants and Bioavailability
·
2025
·
IF 3.2
Biao Liu,Qinghua Ai,Youyang Lai,Meng Li,Zhengpeng Feng,Qian Zhang
Aquatic plants used in lake remediation accumulate heavy metals, turning biomass into waste. Herein, biochar (M-AcBC) derived from metal-laden Acorus calamus was combined with sodium percarbonate (SPC) and UV light to degrade tetracycline (TC). M-AcBC contained dispersed CuO, ZnO, and Fe3O4, exhibited defect structures, higher graphitization, and larger surface area than pristine biochar. Under optimal conditions (1.0 g/L M-AcBC, 0.3 mM SPC, pH 3, 900 µW/cm² UV), 90% TC removal was achieved. During the dark phase (0–40 min), functional groups, persistent radicals, and Fe₃O₄ activated SPC to generate •OH, •O2-, and 1O2. Upon UV irradiation (40–120 min), ZnO produced electron-hole pairs that further formed •OH and •O2-. The system exhibited synergistic effects, good reusability, broad applicability to various antibiotics, and reduced ecotoxicity of intermediates. This work provides a waste-to-resource strategy and new insights into the M-AcBC/SPC/UV system for water treatment.
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高影响因子
ACS ES&T Engineering
·
2024
·
IF 7.4
Hanling Jiang,Jingwen Wang,Aijuan Zhou,Yong Liu
Advanced oxidation processes (AOPs) for removing ammonia nitrogen (NH4+-N) are of increasing interest in wastewater treatment. In this paper, the UV-activated persulfate (PS) process with CaO was applied to oxidize NH4+-N to nitrogen gas (N2). Nearly all of the NH4+-N (30 mg N/L) could be removed within 15 min, and the N2 selectivity was achieved at 95.0%. The addition of CaO made NH4+-N exist in the form of NH3, and HO• was the critical reactive species for NH4+-N oxidation. NO, N2H4, and NO2– were identified as oxidation intermediates and could be further removed. The reaction between N2H4 and NO2– with the assistance of UV/CaO promoted N2 generation during NH4+-N oxidation. The increased dosages of CaO (0.2 to 4.0 g/L) and PS (0.6 to 2.4 g/L) could enhance the NH4+-N oxidation, while the presence of CO32– (100 mM) significantly retarded the removal of NH4+-N. As high removal of NH4+-N (100%) and high N2 selectivity (>79.5%) could be achieved in lake water and secondary wastewater, the proposed UV/PS/CaO process could be potentially applied for the oxidation of NH4+-N in practical water treatment.
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高影响因子
CELLULOSE
·
2022
·Vol. 29
·期 8
·4439-4453
·
IF 6.123
Li Yinan,Li Huixin,Huang Jin,Huang Liulian,Chen Lihui,Ni Yonghao,Zheng Qinghong
A highly transparent ZnO/cellulose composite membrane with UV sensing and shielding abilities was prepared via a facile blending method. ZnO nanoparticles (ZnO NPs) without additional surface modification are uniformly dispersed in the regenerated cellulose (RGC) matrix through the N-methyl-morpholine-N-oxide (NMMO) dissolution of cellulose. Agglomeration of the ZnO NPs is effectively minimized, thanks to the strong hydrogen bonds between ZnO NP and cellulose. The optimized ZnO/RGC membrane exhibits not only high a shielding ratio of 97.67 ± 0.11% for UV lights (< 360 nm) but also high transparency of 87.12±1.55% in the visible light region, which is comparable to traditional plastic products. Benefiting from the high photoelectric performance of ZnO NPs, a UV sensor and a UV blocker were integrated into the same device. The as-fabricated ZnO/RGC membrane, with sensitive UV detecting and effective blocking, as well as the rich availability of cellulose as raw material and its biodegradable nature, is an ideal candidate for high-performance UV detection and protection applications. Graphical abstract
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高影响因子
危险品化学品经营许可证（带存储）