JOURNAL OF POLYMER SCIENCE
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2023
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IF 3.4
Yanna Zhao,Yuqing Huang,Wentong Hou,Ting Zhang,Yingying Zhang,Yuqi Wang,Xiaowei Bai
Vitrimer films containing acylhydrazone bonds are synthesized in two steps. Bio-based vanillin and adipate dihydrazide are used to prepare diols containing acylhydrazone bonds in one step, which are introduced into the reaction system of vitrimer to obtain the final films. The process is concise and easy to operate. By utilizing the rigid structure of vitrimer films and introducing dynamic acylhydrazone bonds, the obtained vitrimer films exhibit strong mechanical strength (maximum tensile strength of 27.10 MPa and maintaining up to 185.52% of the original breaking strength), excellent self-healing property (tensile strength of 26.26 MPa after 12 h of primary self-healing and 5.24 MPa after 12 h of secondary self-healing), and rapid shape memory property (recovery time of about 2 min), strong acid and alkali resistance (not dissolved within 24 h), good thermal stability (no decomposition occurs below 160 °C), and high storage modulus (reaches 1087 MPa). These comprehensive benefits yield a certain reference for the preparation of vitrimer materials with prime properties. Graphical
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
高影响因子
ACS Nano
·
2023
·
IF 17.1
Caitao Li,Tengfei Qiu,Cong Li,Baoyuan Cheng,Mingliang Jin,Guofu Zhou,Michael Giersig,Xin Wang,Jinwei Gao,Eser Metin Akinoglu
Transparent electrodes are vital for optoelectronic devices, but their development has been constrained by the limitations of existing materials such as indium tin oxide (ITO) and newer alternatives. All face issues of robustness, flexibility, conductivity, and stability in harsh environments. Addressing this challenge, we developed a flexible, low-cost titanium nitride (TiN) nanomesh transparent electrode showcasing exceptional acid–alkali resistance. The TiN nanomesh electrode, created by depositing a TiN coating on a naturally cracked gel film substrate via a sputtering method, maintains a stable electrical performance through thousands of bending cycles. It exhibits outstanding chemical stability, resisting strong acid and alkali corrosion, which is a key hurdle for current electrodes when in contact with acidic/alkaline materials and solvents during device fabrication. This, coupled with superior light transmission and conductivity (88% at 550 nm with a sheet resistance of ∼200 Ω/sq), challenges the reliance on conventional materials. Our TiN nanomesh electrode, successfully applied in electric heaters and electrically controlled thermochromic devices, offers broad potential beyond harsh environment applications. It enables alternative possibilities for the design and fabrication of future optoelectronics for advancements in this pivotal field.
研究领域:
材料科学
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光电设备
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纳米技术
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产品关联
DOI
PubMed
高影响因子
RSC Advances
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2016
·Vol. 6
·期 115
·114750-114757
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IF 3.289
Wanfa Zhang,Xu Chen,Jiefeng Pan,Congjie Gao,Jiangnan Shen
Novel regenerated cellulose (RC) membranes were fabricated using an immersion precipitation phase inversion method from five non-derivative solvents (NaOH/urea/H2O, NaOH/thiourea/H2O, LiOH/urea/H2O, NaOH/urea/thiourea/H2O and LiOH/urea/thiourea/H2O) for oil–water separation. The prepared RC membranes exhibited a similar asymmetric and reticulated pore structure, with a pore diameter ranging from 12.77 to 17.09 nm, which is similar to typical ultrafiltration membranes. The biggest pore diameter was obtained using a NaOH/urea/H2O solvent and the best mechanical properties were obtained using a LiOH/urea/H2O solvent, which indicated that by using different mixed solvents, different pore sizes and mechanical properties can be obtained for fabricated cellulose membranes. Measurements of the flux and the rejection using edible oil/water in this study showed that our prepared membranes possessed excellent oil retention ratios of up to 98%; meanwhile the water flux recovery ratios were around 90% through simple water flushing. Besides, after immersion in strong acid/alkaline solution for a week, the pure water flux (J), dimensions and weight showed no obvious change, and there was no change in filtration performance at room temperature with a pH from 1 to 14, indicating the advantage of high tolerance to acid/alkaline.
研究领域:
材料科学
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环境工程
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产品关联
DOI
高影响因子
ACS Applied Nano Materials
·
2024
·
IF 5.3
Wei Xing,Yanxin Wang,Xinhui Mao,Zhiyuan Gao,Zilong Wang,Matt J. Kipper,Linjun Huang,Jianguo Tang
Managing oily wastewater remains a challenging issue in terms of technology. The technology of membrane separation can provide both high separation efficiency and low operating cost, so the exploitation of highly effective oil/water separation membranes has become a research hotspot. In the present work, we prepared porous silica (SiO2)/carbon nanotubes (CNTs) nanofibrous membrane (PSCM) by comixing hydrophilic CNTs and carbon nanospheres (CNSs) with SiO2 precursor liquid, followed by the electrospinning method. The addition of CNTs has enhanced the roughness of the nanofibrous membrane and improved the wettability, making the membrane superhydrophilic. Meanwhile, the strong electrostatic attraction between SiO2 and CNTs makes the bond between them stronger, which is favorable for withstanding the osmotic pressure from the liquid. The presence of PSCM micro/nanoporous structure creates an infiltration channel for the liquid, and the porous structure gives it excellent porosity, which greatly improves the performance of oil/water separation. The membrane has high separation performance for oil/water mixtures in gravity-based feeding devices with a high separation flux of up to 8340 L m–2 h–1 and separation efficiency of up to 99.5%. In addition, we found that PSCM has good resistance to oil pollution and acid and alkali resistances through testing. It still has a flux of 6231 L m–2 h–1 and 5512 L m–2 h–1 under strong acid and alkali conditions, respectively, and performs well in the cyclic separation test under strong acid and alkali conditions. This work provides perspectives on oily wastewater and water purification remediation.
研究领域:
材料科学
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环境工程
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2024
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IF 4.9
Yunhe Zhang,Gaihuan Ren,Gaowei Nie,Shenpeng Hu,Dongxiang Li,Wen Sun,Zhanzhao Li,Zhenhua Cui,Dongxu Lu,Xiaohan Shi,Longwei Li,Hongqin Yu,Jianxin He
Membranes with good waterproofness and breathability are desired for the preparation of outdoor sports garments. However, current waterproof and breathable membranes use environmentally hazardous fluorine-containing raw materials and suffer from many problems such as complicated preparation processes and single function. Therefore, it is a great challenge to select environmentally friendly raw materials to prepare multi-functional membranes with waterproof-breathable performance by simple preparation method. In this paper, fluorine-free poly(styrene-b-butadiene-b-styrene) (SBS), polyurethane (PU), and 2-hydroxy-4-n-octyloxy benzophenone (UV531) were selected to prepare multi-functional nanofiber membranes by convenient one-step electrospinning. The properties of the environmentally friendly multi-functional SBS/PU/UV531 nanofiber membranes were systematically optimized by adjusting the concentration of UV531 in the nanofiber membranes. The ultimately obtained multi-functional SBS/PU/UV531–2 nanofiber membrane shows excellent waterproofness (hydrostatic pressure: 58.8 kPa), high breathability (WVT rate: 5.2 kg m −2 d −1 ), good mechanical properties (breaking strength : 7.26 MPa, breaking elongation: 327.9%), excellent UV resistance (UPF: 238.23), and strong acid and alkali resistance properties. This multi-functional nanofiber membrane has broad application prospects in a variety of fields such as outdoor protective clothing, extreme environment materials, and military products.
研究领域:
材料科学
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环境科学
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纺织工程
✓ 已验证
产品关联
DOI
高影响因子
DALTON TRANSACTIONS
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2018
·Vol. 47
·期 33
·11554-11562
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IF 4.099
Chen Liang,Ying Yu,Cailing Chen,Yue Lou,Lei Wang,Kang Liu,Xiao-Bo Chen,Chunguang Li,Zhan Shi
Carbon nanotubes with encapsulated Co nanospheres (Co@CNTs) were prepared via a simple approach that exhibits promising control over the morphology and size distribution. The individual CNTs interweave with each other and form a three-dimensional network structure. Test results indicate that the presence of polarized interfaces between the Co spheres and CNTs, as well as an excellent impedance match, leads to a superior performance in electromagnetic wave absorption. A maximum reflection loss of −70.8 dB at 6.24 GHz is obtained for a paraffin containing a 30 wt% Co@CNT inclusion. In addition, the effective absorption bandwidth (with a reflection loss below −10 dB) is 12.95–17.7 GHz at a thickness of 1.9 mm, covering most Ku bands. In particular, such Co@CNT structures demonstrate superior and sustainable electromagnetic wave-absorption properties even in contact with concentrated acid or base, owing to their specific encapsulated structure. These findings could provide new guidelines for the preparation and employment of promising microwave absorption materials that can work under harsh environments through a simple and feasible strategy.
研究领域:
材料科学
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电磁学
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化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2022
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IF 9.136
Xuan Peng,Zhangfu Yuan,Heming Zhao,Hong Wang,Xinge Wang
It remains a significant challenge to separate oil and water in the metallurgical industry. Therefore, there is an urgent need for a low-cost process to prepare hydrophobic and lipophilic materials in order to improve oil-water separation performance. The hydroxyl group on the surface of diatomite was modified by a polysiloxane reaction. The microstructure, chemical composition, and hydrophobicity before and after modification were studied by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy, and X-ray photoelectron spectroscopy. Diatomite@POS/EP coating was prepared using the spraying suspension method, to endow various materials with excellent hydrophobic properties (ceramic, sponge, stainless steel, paper, and gauze). The SEM results show that many spherical particles were stacked on the modified diatomite disk, and new elements and structures were observed. The Diatomite@POS floated on the water indicates that the modification was successful. The contact angle between coating on porous diatomite ceramics and water could reach 147.5° when the mass ratio of Diatomite@POS: EP was 7:5. After 0–1000 cm wear test, and soaked in acid and alkali solution for 4 h, the coating could keep hydrophobicity, indicating that it features excellent wear resistance, acid, and alkali resistance. Ceramic sprayed with Diatomite@POS/EP and melamine sponges soaked in Diatomite@POS/EP were capable of effectively separating vacuum pump oil from water, which showed the promising self-cleaning performance of the ceramic surface. Besides, modified diatomite powder had great potential for application in waterproofing, self-cleaning, oil-water separation, and other fields.
研究领域:
材料科学
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环境工程
✓ 已验证
产品关联
DOI
高影响因子
Nano Research
·
2024
·
IF 9.5
Lou Yue,Li Jiao,Li Xiaokun,Zhu Zhenyu,Shi Zhan,Xu Biao
Developing acid/base-resistant and low-price microwave-absorbing materials with lighter weight is highly desired for practical applications in extreme environments. Herein, we demonstrate the successful synthesis of the N-doped porous carbon (NC) material with hierarchical pore structure by the spray pyrolysis method. The large specific surface area (S BET = 707.53 m 2 ·g −1 ) of materials enables multiple scattering of incident electromagnetic waves, and N doping greatly enhances the electrical conductivity of the material. Notably, single-atom Zn can adjust the local electronic structure of adjacent sites such as carbon and nitrogen atoms, induce the center of polarization, and thus change the dielectric and electronic properties of the host material. The porous carbon coating of single-atom Zn avoids the deterioration of electromagnetic parameters caused by the accumulation of magnetic particles under high-temperature pyrolysis. At the same time, they can also be used in various complex environments, such as acidic and basic environments. Ultimately, NC-1000, with high surface area, low density, and good chemical stability, obtained a minimum reflection loss (RL min ) of −50.5 dB and an effective absorption bandwidth (EAB) exceeding 5.1 GHz at the thickness of 1.9 mm. After soaking in the strong acid and base solution, the electromagnetic wave absorption performance of the material decreased by < 15%. Widely available raw materials and a simple preparation scheme are expected to expedite industrial mass production for this novel type of materials.
研究领域:
材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
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2022
·
IF 9.224
Changmei Lin,Hai Huang,Honghui Zhao,Shilin Cao,Xiaojuan Ma
Cellulose paper-based triboelectric nanogenerators (CPTENGs) have gained considerable attention because they are low-cost, lightweight, flexible, and environmentally friendly. However, the poor triboelectric property and hydrophobicity of cellulose paper still limit the development of high-performance CPTENGs. In this work, octadecylamine (ODA) has been introduced onto cellulose fibers to prepare hydrophobic cellulose paper (HCP) by means of polydopamine (PDA) which can react with ODA and hydrogen bond with cellulose. Benefiting from the ODA and PDA co-modification, HCP exhibits excellent triboelectric property, surface roughness, and hydrophobicity; moreover, the HCP exhibits remarkable resistance to acids and alkalis. In addition, an HCP-based TENG (HCPTENG) shows an open-circuit voltage (VOC) of 237.8 V and a short-circuit current (ISC) of 4.2 μA, which are higher than those of the most of cellulose paper-based TENGs. More importantly, the HCPTENG shows great output performance stability when treated with water, acids, and alkalis. The HCPTENG with a retractable and collapsible lantern structure can harvest energy from human movement and detect the foot motion like walking and running and hand flapping.
研究领域:
材料科学
·
能源技术
✓ 已验证
DOI
高影响因子
Journal of Water Process Engineering
·
2024
·
IF 6.3
Shuang Fu,Yingbo Chen,Xintong Wu,Liu Ye,Linzhe Xu,Xinyu Zhao
Nanofiltration (NF) membranes play a crucial role in wastewater treatment based on their unique separation mechanism. However, conventional polyamide nanofiltration membranes are susceptible to degradation in extreme pH or chlorine environments, resulting in a limited range of applications. In this study, hydrophilic functional coatings were constructed on polyethersulfone (PES) support using the biopolymer materials, κ-carrageenan (κ-CGN) and sodium carboxymethyl cellulose (CMC). The coatings were cross-linked with glutaraldehyde (GA) to form a dense three-dimensional network structure insoluble in water, enabling structural stability in harsh environments. The Na 2 SO 4 retention of the κ-CGN/CMC/PES composite membranes was maintained at 92.1 and 91.4 % after 38 days of immersion in 20 wt% H 2 SO 4 and 2 M NaOH aqueous solutions, respectively. Meanwhile, κ-CGN/CMC/PES maintained a good salt retention (Na 2 SO 4 , ∼90.0 %) after chlorine treatment (72,000 ppm h). The excellent separation performance of the κ-CGN/CMC/PES composite membranes at different pH and concentration of Cr (VI) indicated its wide application for Cr(VI) removal at harsh conditions.
研究领域:
环境科学
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材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
·
2024
·
IF 2.8
Wei Wang,Peipei Li,Jiaqi Wang,Baiyu Xu
BACKGROUND An antifouling and acid/alkali-resistant sulfonated polyethersulfone (S-PES)/polysulfate (PSE) composite ultrafiltration (UF) membrane prepared via a nonsolvent-induced phase separation (NIPS) method was used for the purification of ulinastatin (UTI) as an examplar protein-based drug. RESULT The effect of the content of S-PES on the structure and UF performance of the S-PES/PSE composite UF membrane was investigated. The acid/alkaline resistance of the S-PES/PSE membranes was evaluated in the pH range 5–10 suitable for a UTI solution. UF desalination experiments were carried out on UTI elution collection solution, and the antifouling performance and long-term stability of S-PES/PSE composite UF membrane were evaluated. The results indicate that, for the optimal content of 4% S-PES, pure water flux increased from 120 to 726 L m −2 h −1 , WCA decreased from 79.3° to 51.0°, and the rejection of UTI was 95.90% ± 1.1% compared to PSE. Compared with PES and PSF membranes, the flux recovery rate of the S-PES/PSE composite UF membrane was 80.63% (an increase of 32.48%), and the UTI adsorption was only 75.00 μg cm −2 (a decrease of 88.00%) after simulated antifouling experiments. CONCLUSION The S-PES/PSE composite UF membrane has excellent long-term stability, suggesting significant potential for application in the purification of protein-based drugs and in large-scale UTI purification. © 2024 Society of Chemical Industry (SCI).
研究领域:
材料科学
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生物医学工程
·
制药工程
✓ 已验证
产品关联
DOI
高影响因子
DESALINATION
·
2025
·
IF 9.8
Yang Liu,Yanzhe Xu,Wenshi Liu,Hao-Ran Zuo,Ming Duan
The diversity of industrial wastewater has put forward increasing demand, such as acid/alkali resistance and effective separation of salts from dyes, for loose nanofiltration (LNF) membranes, promoting modification and functionalization of selective layer. However, traditional polyamide or polyester selective layer of LNF membranes are constructed by connection between functional group in monomers, showing less potential for further modification and functionalization. In this regard, we introduced interfacial radical polymerization, through which the selective layer was constructed by C C bond, leaving functional groups for modification and functionalization. Moreover, trifunctional cross-linker was introduced to enhance the self-limiting growth of selective layer. The thickness of selective layer formed through interfacial radical polymerization was ∼110 nm, which was almost the same as commercial polyamide or polyester selective layer. Consequently, the as formed selective layer exhibited outstanding permeability of ∼102 LMH/bar and excellent selective factor up to 646 of Na 2 SO 4 over CR. In addition to strong resistance to acid/base in the pH range between 1 and 14, the LNF membrane demonstrated great potential for directly treating industrial dyeing wastewater. After a two-stage filtration, the removal rates of color, turbidity, and COD were 96.6 %, 99.9 %, and 92.3 %, respectively, and the recovery of membrane performance could reach 99 % even after six filtration cycles. The application of interfacial radical polymerization in membrane fabrication endows diverse modification and functionalization of membranes, which paves a new way for general application of membrane process in treating industrial wastewater.
研究领域:
材料科学
·
环境工程
·
化学工程
✓ 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）