SEPARATION AND PURIFICATION TECHNOLOGY
·
2016
·
IF 3.299
Chenglong Shi,Yan Jing,Jiang Xiao,Xingquan Wang,Ying Yao,Yongzhong Jia
Two non-fluorinated ionic liquids (ILs), namely tetrabutylammonium bis(2-ethylhexyl)-phosphate, [N 4444 ][DEHP], and tetraoctylammonium bis(2-ethylhexyl)-phosphate, [N 8888 ][DEHP], were synthesized and fully characterized by 1 H and 13 C NMR spectroscopy. These functionalized ILs were subsequently evaluated in terms of their ability to extract lithium ions from aqueous solution. The extraction efficiencies of these functionalized ILs for lithium ions were measured as a function of various extraction parameters, including aqueous acidity, temperature and extractant concentration. The extracted species were determined using a slope analysis method, which indicated that the ILs formed a 1:1 (metal:ligand) complex. Fourier transform infrared spectroscopy studies were conducted to better understand the nature of the extracted species. We also investigated the stripping of the lithium ions from the organic phase and the re-use of the ionic liquid in a subsequent extraction step.
研究领域:
化学
·
材料科学
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产品关联
DOI
高影响因子
ACS Omega
·
2021
·
IF 3.512
Mengmeng Zhou,Meng Li,Fengjiao Xu,Yuanping Yang,Yongbing Pei,Yue Yan,Lianbin Wu
In this work, a durable superhydrophobic fabric was fabricated by a facile covalent surface modification strategy, in which the anchoring of 10-undecenoyl chloride (UC) onto the fabric through the esterification reaction and covalent grafting of n-dodecyl-thiol (DT) via thiol-ene click chemistry were integrated into one step. Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy (SEM) measurement results demonstrated that UC and DT were covalently grafted onto the fabric surface. The formed gully-like rough structure by the grafted UC and DT on the fabric surface together with the inherent microfiber structure, combined with the grafted low-surface-energy materials of UC and DT, gave the resultant modified DT–UC@fabric superhydrophobic performance. The superhydrophobic DT–UC@fabric was used for separation of oil–water mixtures; it exhibited high separation efficiency of more than 98%. In addition, it presented excellent durability against mechanical damage; even after 100 cyclic tape-peeling and abrasion tests, the DT–UC@fabric could preserve superhydrophobic performance, which was ascribed to the formed covalent interactions between the fabric surface and the grafted UC and DT. Therefore, this work provided a facile, efficient strategy for fabricating superhydrophobic composites with excellent durability, which exhibited a promising prospect in the application of self-cleaning and oil–water separation.
研究领域:
材料科学
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化学工程
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产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Dongsong Wei,Jinguo Wang,Shuyi Li,Dawei Wang,Yan Liu
The superhydrophobic surface has become a smart strategy for boosting the application of Mg alloy due to its anti-icing and anti-corrosion abilities. However, its application has been limited due to some drawbacks, such as harmful fluorinated materials, poor mechanochemical robustness, and unsatisfactory anti-icing performance in extreme environments. Herein, a non-fluorinated electrothermal/superhydrophobic coating, including bottom insulation and top superhydrophobic films, is prepared on Mg alloy by spray method. The superhydrophobic coating exhibits good mechanical robustness, chemical stability, and in-situ electrothermal-healing ability against plasma and chemical etchings. The electrothermal characteristic and superhydrophobicity endow the coating with excellent static and dynamic anti-icing, de-frosting, and de-icing performances. Moreover, the superhydrophobic coating exhibits a long-term anti-corrosion effect due to a durable air layer and organic coating, and can recover the coating's corrosion resistance by repairing superhydrophobicity. We expect that this research provides a wise strategy for designing superhydrophobic coating with good mechanical robustness, good chemical stability, electrothermal, in-situ self-healing, outstanding anti-icing, and long-term corrosion protection abilities to meet functional needs of Mg alloy as well as other metal materials.
研究领域:
材料科学
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表面工程
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产品关联
DOI
高影响因子
Nanomaterials
·
2024
·
IF 4.4
Xinrui Guo,Zhongxin Zhang,Zhanyan Liu,Hui Huang,Chunlei Zhang,Huaxin Rao
Non-fluorinated chitosan-based proton exchange membranes (PEMs) have been attracting considerable interest due to their environmental friendliness and relatively low cost. However, low proton conductivity and poor physicochemical properties have limited their application in fuel cells. In this work, a reinforced nanofiller (sulfonated CS/GO, S-CS/GO) is accomplished, for the first time, via a facile amidation and sulfonation reaction. Novel chitosan-based composite PEMs are successfully constructed by the incorporation of the nanofiller into the chitosan matrix. Additionally, the effects of the type and amount of the nanofillers on physicochemical and electrochemical properties are further investigated. It is demonstrated that the chitosan-based composite PEMs incorporating an appropriate amount of the nanofillers (9 wt.%) exhibit good membrane-forming ability, physicochemical properties, improved proton conductivity, and low methanol permeability even under a high temperature and low humidity environment. When the incorporated amounts of S-CS/GO are 9 wt.%, the proton conductivity of the composite PEMs was up to 0.032 S/cm but methanol permeability was decreased to 1.42 × 10 −7 cm 2 /s. Compared to a pristine CS membrane, the tensile strength of the composite membrane is improved by 98% and the methanol permeability is reduced by 51%.
研究领域:
材料科学
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能源科学
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化学工程
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产品关联
DOI
PubMed
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2025
·
IF 6.2
Cheng Chen,Haoyue Liu,Yutong Wang,Zhiwei Zhang,Yifan Jing,Lixia Jia,Yuanshu Xiao,Guohua Shan,Li Jiang
Carbon nanotubes, carbon nanospheres, long-chain alkyl amine, pentaerythritol-containing compound and branched amino polymer were mixed in ethanol medium without heat; by utilizing the in-situ growth of nanoscale low surface energy granules onto carbon matrix surface via the room-temperature reaction between acrylate-comprising reactant and amino substance, whereafter the hierarchical structural assembly was formed, the carbon nanotubes-based nonfluorinated superlyophobic paint was constructed in the one-pot spontaneous condition. Well-suited spraying technology was used for fixation of as-prepared superwetting paint on cotton textile to create fluoride-free hot-water-repellent cotton fabric coating, its contact angle and sliding angle were 155.0° and 2° tested by 95°C of water. Furthermore, the anti-fouling effect of such coated fabric to 95°C sewage and self-cleaning behavior, by dripping 95°C water onto coating product, were adequately established. Notably, universally applicable fabrication and large-scale formation of the hot-water-repellent coating were also realized, thereinto these coating surfaces of apocynum fabric, glass sheet, cardboard, plastic sheet, cork board and sponge, sprayed by the carbon nanotubes-based superwetting paint, had contact angles over 158° as well as 1° of sliding angles (tested water temperature, 95°C). Beyond that, the cellulose sheet coating, obtained using same strategy as mentioned above, could separate mixture of oil and hot water (55°C), meanwhile its oil-hot water separation flux and efficiency were 9370 L·m −2 ·h −1 and 99.7 %. It is believed that the self-developed carbon nanotubes-based nonfluorinated superwetting special paint product provides robust hot-water-repellent coating that is beneficial to the low-carbon development of hot liquid resistant surfaces with easy operability, environmental sustainability, and durable application.
研究领域:
材料科学
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环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF SUPERCRITICAL FLUIDS
·
2019
·
IF 3.481
Lei Bao,Yang Chen,Liru Ma,Dongdong Hu,Yuan Zong,Ling Zhao,Weikang Yuan,Tao Liu
Three nonfluorinated co-surfactants, sodium bis (2-(isopropoxy)-ethanol) sulfonate (di-IOESS), sodium bis (3,5,5-trimethyl-hexanol) sulfonate (di-TMHSS) and sodium bis (2-(pivaloyloxy)-ethanol) sulfonate (di-POESS) were synthesized to replace partial sodium bis (3,3,4,4,5,5,6,6,6-nonafluoro-hexanol) sulfonate (4FS(EO) 2 ) to stabilize W/C microemulsions to decrease the fluorine content. The results showed that the stabilization ability of the co-surfactants at less than 55 °C was in the following order: di-TMHSS > di-POESS > di-IOESS. Results for MD simulations proved that the co-surfactants mainly changed the packing efficiency of the surfactant short chains. The flexible co-surfactant tails could maintain the bending fraction of the surfactant short tail at a low level and the appropriate length of co-surfactant tails helped to occupy more volume at the interface. Therefore, the nonfluorinated co-surfactants with flexible branched tails in an appropriate length relatively to the surfactant tails were conducive to replace partial fluorinated surfactants, which may help for designing nonfluorinated co-surfactants to decrease the fluorine content in W/C microemulsions.
研究领域:
化学
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材料科学
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环境科学
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Nannan Zhang,Rui Hou,Yaohan Chen,Xue Wang,Shenghai Li,Suobo Zhang
Binders are essential functional components in lithium-ion battery electrodes, functioning as a bridge that connects active materials, conductive additives, and current collectors. In response to the escalating global regulatory pressures on per- and polyfluoroalkyl substances, the development of nonfluorinated binders has become an urgent industrial need. In this study, we designed and synthesized a fluorine-free copolymer binder (AMIS) featuring dual polar functional groups (carboxyl and sulfonate) via multicomponent copolymerization, and following a cross-linking strategy by thiourea or thiohydantoin, which served as a hydrogen-bond donor–acceptor and facilitated the formation of a topological hydrogen-bond network within the binder. Electrochemical evaluation of electrodes utilizing the C-AMIS binder demonstrated a capacity retention of 86.96% over 200 cycles at 1 C and a rate capability of 61.90% at 5 C. These enhanced electrochemical properties are attributed to the synergistic stabilization provided by a dual hydrogen-bond–covalent-bond network, which effectively modulates interfacial stability, as well as battery performance. The dynamic bonding strategy proposed in this study is expected to inspire further structural design of environmentally friendly high-performance binders.
研究领域:
材料科学
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电化学
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高分子化学
·
能源存储
·
环境友好材料
✓ 已验证
产品关联
DOI
PubMed
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2020
·
IF 4.469
Ximing Zhong,Meng Zhou,Sheng Wang,Heqing Fu
Existing approaches for the preparation of anti-smudge surfaces are prominently confined to the use of fluorinated materials and highly toxic organic solvents. Smooth water-borne non-fluorinated anti-smudge surfaces are highly desirable for their high safety, low cost and environmental friendliness, and they could also address the challenges plagued by the deficiencies in long-term stability, durability, and scalability existing in present coating systems. Herein, we, for the first time, develop a novel smooth non-fluorinated anti-smudge system by crosslinking the hydrophilic groups in two water-borne components. The resultant surfaces are highly transparent, and they show striking anti-smudge performance toward various liquids, including water, hexadecane, diiodomethane, decane, ethanol, etc. Besides, these surfaces demonstrate remarkable chemical shielding ability against acid solution and alkali solution and thus protect substrates against exposure to harsh chemical environments. Also, they exhibit self-healing ability against chemical and physical damages. Compared with commercial fluorinated amphiphobic surface and superhydrophobic surface, these non-fluorinated surfaces show incomparable advantages in anti-smudge performance, pump oil and crude oil droplets could slide off the surface without leaving any traces. Furthermore, these surfaces could be applied for anti-graffiti and anti-fingerprint purposes due to their outstanding anti-smudge performance toward water-borne and oil-borne paints, ink, and artificial fingerprint liquid. More strikingly, they could maintain anti-smudge performance even after being subjected to long-term UV irradiation and physical damages, such as impact and scratch, indicative of the remarkable weathering resistance and the outstanding mechanical durability of these coating surfaces. Therefore, excellent performances in addition to the cost-effective and environmentally-friendly features make these newly-developed smooth water-borne non-fluorinated anti-smudge surfaces promising for widespread applications.
研究领域:
材料科学
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表面化学
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环境科学
·
涂层技术
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产品关联
DOI
高影响因子
JOURNAL OF SUPERCRITICAL FLUIDS
·
2017
·
IF 2.991
Lei Bao,Shuyi Fang,Dongdong Hu,Yuan Zong,Ling Zhao,Weikang Yuan,Tao Liu
Several amphiphilic nonfluorinated polymers, poly(vinyl acetate)-block-poly(dimethylaminoethyl methacrylate) (PVAc -b- PDMAEMA) and poly(vinyl acetate- alt -diethyl maleate) (PVDBM) -b- PDMAEMA with different ratios of CO 2 -philic and hydrophilic groups, were synthesized using RAFT/MADIX polymerization and ATRP. Stability measurements revealed that PVDBM 8 -b- PDMAEMA 22 could emulsify 80% CO 2 in H 2 O, with stable CO 2 -in-water (C/W) emulsions observed for more than 48 h under 20.0 MPa at 25 °C, which was 20 times longer than PVAc -b- PDMAEMA did. The optimal degree of polymerization (DP) for CO 2 -philic groups in PVDBM- b -PDMAEMA was 8, because increasing the DP of PVDBM increased the CO 2 -philicity, whereas increased molecular weight limited the miscibility in water. Molecular dynamics simulations were applied to determine the hydrophilic/CO 2 -philic balance (HCB). It was found that enhanced CO 2 -philic tails widened the HCB range, and the optimal range of the HCB was varied with CO 2 -philic tail types. Both experimental and simulation results demonstrated that enhancing the CO 2 -philicty of surfactant tails can improve the stability of C/W emulsions.
研究领域:
材料科学
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化学工程
·
高分子化学
✓ 已验证
DOI
高影响因子
Advanced Science
·
2025
·Vol. 12
·期 37
·e17305
·
IF 14.1
Zhicheng Wang,Shixiao Weng,Haiyang Zhang,Liping Wang,Xu Yao,Haifeng Tu,Dan Huang,Suwan Lu,Lingwang Liu,Jiangyan Xue,Fengrui Zhang,Guan Wu,Jieyun Zheng,Qing Wang,Liquan Chen,Jingjing Xu,Hong Li,Xiaodong Wu
The performance of lithium-sulfur (Li-S) batteries is crucially affected by the anodic stability of Li-metal and cathodic conversion kinetics of sulfur-carbon (S/C) composites. Herein, a weakly solvating electrolyte (WSE) with moderate lithium polysulfides (LiPSs) solubility, consisting of 1 M lithium bis(trifluoromethane sulfonyl) imide (LiTFSI) in non-fluorinated solvent of cyclopentyl methyl ether (CPME) and 1,3-dioxolane (DOL) additive, is employed in Li-S batteries to simultaneously achieve high anodic stability and appropriate cathodic kinetics. This WSE exhibits a good capability of suppressing LiPSs shuttling by forming an anions-dominated Li + solvation structure, effectively inducing a stable solid electrolyte interphase (SEI) to guarantee anodic stability of the Li-metal anode. Additionally, the DOL additive in the WSE aids in forming a thin organic-inorganic hybrid cathode electrolyte interphase (CEI) on the surface of S/Li 2 S particles, which maintains good conversion kinetics and suppresses dead S/Li 2 S growth in the S/C cathode. Consequently, Li-S batteries with the WSE deliver a high initial capacity (≈1208 mAh g −1 ), a high average Coulombic efficiency (≈98.6%), and a high capacity retention rate (≈82.4%) over 200 cycles. Stable cycling performance over 100 cycles is also observed in the Li-S pouch cell with the WSE even under harsh conditions.
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产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Hang-Lin Li,Zhi-Shuo Jiang,Fang Wang,Rong-Gang Zhang,Ren-Yi Sun,Yu-Zhong Wang,Fei Song
Developing nonfluorinated low-surface-energy coatings with robust environmental adaptability is crucial for green and sustainable industrial applications. Despite substantial advances in hierarchical structures and low-surface-energy chemical design strategies, the specific effect of alkyl chain length bearing a tertiary amine group in nonfluorinated low-surface-energy systems on the dynamic wetting behavior and long-term stability of liquid-repellent coatings remains underexplored. Here, the impact of alkyl side-chain length on the dynamic wettability and stability of superhydrophobic coatings is investigated. Three amine-functionalized monomers with varying alkyl side-chain lengths (C3, C6, and C9) are synthesized and grafted onto nanosilica via polymerization to form organic–inorganic hybrid coatings. The results show that increasing the alkyl side-chain length enhances the dynamic antiwetting capability and droplet bouncing behavior. Notably, the coating with the longest alkyl side chain exhibits an ultralow water adhesion of 22 μN, enabling up to eight successive droplet rebounds upon impact due to the “spring-like” behavior of the extended alkyl chain. Moreover, increasing the alkyl side-chain length significantly enhances the water resistance and UV stability of the coatings. The C9-based coating demonstrates satisfactory durability, withstanding 288 h at a 5 cm depth and 192 h at a 25 cm depth of water, while maintaining stable superhydrophobicity even after 672 h of UV exposure. These findings demonstrate the critical role of alkyl side-chain length in regulating dynamic wettability and stability, providing insights for the rational design of durable fluorine-free superhydrophobic coatings for practical applications.
研究领域:
材料科学
·
表面工程
·
高分子化学
·
纳米技术
·
环境适应性
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产品关联
DOI
PubMed
高影响因子
CELLULOSE
·
2019
·Vol. 26
·期 10
·6291-6302
·
IF 3.917
Sheng Junjiao,Li Junrong,Zhao Lihong
The oleophilic nature of paper often limits its use in applications that involve direct contact with grease, but now the generation of oil-repellent surfaces has almost universally deployed environmentally detrimental approaches relying on fluorinated compounds. In this paper, non-toxic fluoro-free grease-proof papers coated with sodium alginate (SA)/sodium carboxymethyl cellulose and SA/propylene glycol alginate were prepared, the maximum of kit values reached 9. The coatings completely covered the base paper surface and penetrated into the interfiber networks to some extent, and the modified mechanical properties were obtained. It was found that the lower the air permeability was, the better the oil resistance of the biopolymer coatings on fiber substrate was. For coatings with high surface energy, as the surface energy is dominated by the polar part, the stronger the polarity, the greater the repulsion to oil. The reduction of surface energy can effectively improve the anti-wettability for oil and water.
研究领域:
材料科学
·
化学工程
·
环境科学
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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）