Results in Surfaces and Interfaces
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2025
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IF 4.4
Zijing Bai,Yumeng Wang,Wei Shi,Peng Gao,Zengyun Jian
Protic ionic liquids (PILs) have been emphasized in recent years owing to their convenient synthesis routines and outstanding lubricity properties. In this work, amidoxime-based PILs were investigated as additives in PAO10. The tribological tests demonstrated that these newly synthesized PILs could highly improve the friction-reducing, anti-wear, variable-frequency and load-carrying capacity properties of PAO10. The results of contact angle, ECR, SEM-EDS and XPS analysis revealed that the tribofilm consisted of a physical absorption layer containing organic carbonaceous species and a tribochemical film containing Fe 2 O 3 , which is responsible for the significant improvement of tribological performances of PAO10.
研究领域:
材料科学
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化学工程
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机械工程
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DOI
高影响因子
Scientific Reports
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2025
·Vol. 15
·期 1
·1-12
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IF 3.9
Yan Huijun,Huo Long,Zhang Zhi,Wu Haoyuan,Fang Shimin,Li Xuanyi,Bai Jianwei
Extracting uranium from water is of great significance for environmental protection and nuclear energy development. Herein, the Amidoximation Polyethylenimine—Monomer (PEI-MO-AO) with a porous block was synthesized. The adsorbent was formed by crosslinking polyethyleneimine and the polymers of terephthalaldehyde and diaminomaleonitrile and the following amidoximation enhanced the adsorption performance. Accordingly, the porous structure endows the PEI-MO-AO a good hydrophilicity. The adsorption results exhibited that the maximum capacity reached 218 mg·g −1 at a pH of 6 and can adsorb uranium over a larger pH range. Besides, it maintained a distribution coefficient of 8760 mL·g −1 for uranium despite the high-intensity interference of other ions. After six consecutive adsorption cycles, the removal rate of uranium ions sustained at 81.6%, and the uranium adsorption capacity maintained a relatively elevated value of 189.31 mg·g −1 . The PEI-MO-AO porous network polymeric material exhibited significant potential as an adsorbent, offering novel insights into the domain of uranium extraction and removal.
研究领域:
环境科学
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材料科学
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核能
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化学工程
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DOI
PubMed
高影响因子
JOURNAL OF MEMBRANE SCIENCE
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2025
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IF 9
Wei Luo,Sifan Gao,Linping Yan,Xuepin Liao,Bi Shi
The limited availability of terrestrial uranium resources poses significant challenges to the development of nuclear energy. Extracting uranium from Salt Lake water offers a new solution to address the shortage of uranium resources. This study used chitosan, a naturally adsorptive material, to create chitosan microporous membranes (CS) with polyethylene glycol as a porogen. Subsequently, a novel amidoxime-based chitosan microporous membrane adsorbent (CS-AO) was developed based on CS for uranium extraction from Salt Lake water. The CS-AO membrane's hydroxyl, amino, and amidoxime groups work synergistically to provide multiple binding sites, significantly enhancing its binding capacity for UO 2 2+ . Under optimal conditions (initial concentration 3.0 mmol L −1 , temperature 323 K, pH 6), the adsorption capacity reached 2.84 mmol g −1 , with rapid adsorption/desorption rates and good selectivity. At a uranium feed concentration of 0.05 mmol L −1 and flow rate of 1.0 mL min −1 , the treatment capacity was 1046.93 L m −2 . Moreover, when applied to actual brine collected from the Chaerhan Salt Lake in Golmud, Qinghai, China for uranium extraction, CS-AO achieves an extraction rate of 79.6 %. Additionally, CS-AO showed over 90 % antibacterial effects against E. coli and S. aureus , with excellent stability, making it suitable for long-term Salt Lake uranium extraction.
研究领域:
核能
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环境科学
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材料科学
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化学工程
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吸附技术
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DOI
高影响因子
APPLIED SURFACE SCIENCE
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2021
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IF 6.707
Futao Sai,Haitao Zhang,Jianbo Qu,Jianyong Wang,Xiuzhong Zhu,Yang Bai,Peng Ye
Currently, the preparation and application of functional waterborne polyurethane has become a research hotspot in the field of polyurethane. In the present work, Different weight ratios of diacetyl oxime and coumarin diol were used as the reactive filler with isophorone diisocyanate (IPDI) and Poly propylene glycol (PPG) to prepare superior amine-response, self-healing and recyclable waterborne polyurethane films (WPU-x). Dynamic mechanical analysis was carried out to identify the self-healing properties of WPU-x. It was revealed that the WPU-2 film show an excellent self-healing capability based on the combination of the mobility of the soft segment, dynamic reaction of oxime carbamate bond and hydrogen bonds, and the mechanical properties self-healing efficiency can reach 91.11% after self-healing at 90 °C for 7 h. UV testing and fluorescence imaging results shown that WPU-2 film exhibit a rapid and concentration-dependent response to dimethylamine (DMA), and it also shows varying degrees of response to other organic amines. The WPU-2 film could be readily applied in cold chain transportation of shrimp and fish for real-time and visual monitoring the freshness of seafoods. At the same time, the WPU-2 film could be recycled via hot-pressing and solution casting. Therefore, this strategy provides some insights for preparing multi-functional waterborne polyurethane.
研究领域:
材料科学
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化学工程
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DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Junjie Ding,Xiaoyu Sun,Qile Zhao,Xiangyu Liu,Qingdong He,Yue Yin,Jinfang Wu,Fang Guo,Wenbo Wang
Polysaccharide-based hydrogels have shown exceptional potential for rare earth elements (REEs) recovery due to their abundant functional groups and three-dimensional (3D) porous structures. However, their practical application is frequently constrained by insufficient adsorption efficiency, particularly for low-concentration REEs. To address this challenge, we developed a chitosan/poly(acrylic acid-co-amidoxime)/attapulgite composite hydrogel (denoted as CS/AA x AO 1-x @A) through copolymerization of acrylic acid (AA) and acrylonitrile (AN) followed by amidoximation. The designed bifunctional network, containing both carboxyl and amidoxime groups, exhibits substantially enhanced Gd(III) adsorption capacity through synergistic coordination: carboxyl groups pre-concentrates REEs via electrostatic attraction, while the pre-concentrated REEs are subsequently captured by adjacent amidoxime groups through strong chelation. The optimal formulation (CS/AA 0.6 AO 0.4 @A; AA/AO = 4:6) achieves an exceptional maximum capacity of 267 mg/g at 303 K and maintains 99.9 % removal efficiency for low-concentration Gd(III) solutions, surpassing single-functional hydrogel counterparts by 40–60 %. DFT calculations confirm the enhanced binding affinity originates from cooperative Gd(III) chelation between adjacent carboxyl and amidoxime groups. The hydrogel enables complete Gd(III) extraction from complex aqueous matrices containing multiple interfering ions while maintaining >95 % efficiency over five regeneration cycles. The adsorption mechanism involves synergistic chemical complexation (primary), ion exchange (secondary), and electrostatic interactions, as confirmed by kinetic and isotherm analyses. This study presents a molecular design strategy for developing high-performance REE adsorbents, with important implications for sustainable resource recovery and water purification technologies.
研究领域:
材料科学
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环境科学
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化学工程
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高分子科学
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无机化学
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产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
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2023
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IF 6.6
Futao Sai,Haitao Zhang,Jianbo Qu,Jianyong Wang,Xiuzhong Zhu,Peng Ye,Zhiliang Zhang
Recently, the self-healing and recyclability of waterborne polyurethane (WPU) has attracted significant research attention. Herein, different weight ratios of Diels-Alder (DA) diol and diacetyl oxime (DMG) were used as the reactive monomer with polytetramethylene ether glycol (PTMG), isophorone diisocyanate (IPDI) and dimethylolpropionic acid (DMPA). A series of thermal-driven self-healing and green recyclable waterborne polyurethane films (WPU-DMG x -DA y ) were prepared based on synergistic dynamic reactions of oxime-carbamate and DA bonds. We investigated the properties of WPU-DMG x -DA y emulsions by particle size and zeta potential tests, and the results show that these emulsions have excellent storage stability. The self-healing properties of WPU-DMG x -DA y films were identified by dynamic mechanical analysis . It was revealed that the WPU-DMG 4 -DA 4 film has the best self-healing capability, and the self-healing efficiency can reach 92. ± 0.1 % after self-healing at 120 °C for 4 h. The mechanism of the self-healing behavior was studied by Fourier transform infrared spectroscopy , and the effective reversibility of the oxime-carbamate and DA bonds were verified. In addition, thermal gravimetric analysis and tensile test results showed that the thermal stability and mechanical properties of the WPU-DMG x -DA y films were significantly improved. More importantly, the WPU-DMG 4 -DA 4 film can be dissolved in a mixed acetone/ethanol solvent at room temperature. The recycled polyurethane solution could be dispersed in water to obtain a WPU emulsion again. After being recycled three times, the recovery efficiency of the mechanical properties of the WPU-DMG 4 -DA 4 film was higher than 90.1 ± 0.1 %, and the recycled film maintained its thermal stability and self-healing behavior. Moreover, the synthetic leather obtained by compounding WPU-DMG 4 -DA 4 and non-woven fabrics could be easily recycled through this process. The basic properties of the recycled non-woven fabric remained unchanged and the recycled WPU-DMG 4 -DA 4 resin could be reused. Therefore, the WPU-DMG 4 -DA 4 resin has broad application prospects in the tanning industry.
研究领域:
材料科学
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聚合物化学
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环境科学
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可持续材料
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）