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
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产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2024
·
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
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产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2024
·Vol. 34
·期 52
·2410997
·
IF 18.5
Jiawen Zhang,Li Xiang,Binglin Zhou,Yuhao Zhang,Weijie Zhang,Jinyang Jiang,Hongbo Zeng
Supramolecular self-assembly with well-defined building blocks like lipids, deoxyribonucleic acid, or ligands relies on accessible molecular structures and predictable interactions. However, assembling heterogeneous, undefined blocks, such as disordered proteins, amorphous solids, and catecholic derivatives, remains challenging due to their unpredictable assembly, leading to irreversible aggregation, severe precipitation, and unreliable performance. Here, the first programmable, sustainable, and durable self-assembly strategy of supramolecules with heterogenous is presented, derived blocks via harmonizing multiple molecular interactions. This approach achieves reversible assembly/disassembly, ≈73.7% reduced precipitation, and salt- and alkaline-durability under freeze-thaw cycles in model catecholic derivatives, functioning effectively as robust adhesive primers and hydrogel interfacial strengtheners. Moreover, through molecular force measurements and computational simulations, the first general criterion and benchmark for high precision supramolecular self-assembly is proposed, applicable to complex derivatives and interactions: with blocks bearing multiple binding sites existing, the co-assembling blocks should bear at least two binding sites with minimum binding strength (≈17 to ≈37 kJ mol −1 ) to prevent disassembly. This study paves the way and provides benchmarks for precision self-assembly of diverse supramolecules using heterogeneous derivatives for adhesion technology, nanomaterial synthesis and bio-inspired applications.
研究领域:
材料科学
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化学
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生物化学
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产品关联
DOI
高影响因子
Nano Research
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2024
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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
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产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
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2022
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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
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能源技术
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DOI
高影响因子
Journal of Water Process Engineering
·
2024
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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
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产品关联
DOI
高影响因子
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
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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
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制药工程
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产品关联
DOI
高影响因子
DESALINATION
·
2025
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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
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环境工程
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化学工程
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产品关联
DOI
高影响因子
Polymers
·
2025
·Vol. 17
·期 17
·2386
·
IF 4.9
Bingyu Wang,Wei Guo,Ying Deng,Wenbin Jiao,Linzhu Du,Junhui Yue,Bo Zhang
The effective and rapid separation of oil–water emulsions at room temperature, particularly under harsh environmental conditions like acid–base fluctuations, high salinity, and the coexistence of surfactants, remains a significant challenge in oily wastewater treatment. To address this, a novel amphiphilic demulsifier, MOF-74@SiO 2 -GPTMS grafted ANP (MSG-ANP), was synthesized by first modifying MOF-74@SiO 2 (MS) with γ-glycidoxypropyltrimethoxysilane (GPTMS) to create epoxy-functionalized MSG particles, followed by grafting the non-ionic polyether C 12 –C 14 aliphatic polyethylene oxide polyoxypropylene (ANP) onto MSG. Bottle tests demonstrated that MSG-ANP achieved a high demulsification efficiency of 93% within 15 min for oil-in-water emulsions at room temperature. It exhibited excellent environmental tolerance, maintaining efficiencies of 89% at pH 3.0, 82% at pH 11.0, and 95% under high salinity (50,000 mg/L, pH 6.8). Furthermore, MSG-ANP effectively treated surfactant-stabilized emulsions, exceeding 96% efficiency against both cetyltrimethylammonium bromide and sodium dodecyl sulfate after 30 min, outperforming commercial demulsifiers SP-169 and AR-331 by factors of 1.2 and 1.6, respectively. This superior performance stems from synergistic hydrogen bonding (via hydroxyl, ether, ester, Fe-O, and Si-O groups) destabilizing the interfacial film and electrostatic neutralization of coalescing charged droplets. Consequently, MSG-ANP presents a promising solution for rapid, room-temperature demulsification across a wide pH range and under high-salinity conditions.
研究领域:
环境科学
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化学工程
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材料科学
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纳米技术
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油水分离
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产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Yubei Wei,Xiaofeng He,Cunyun Xu,Shijing Yang,Gaobo Xu,Shujun Zhang,Ping Liu,Xiude Yang,Yunjie Xiang,Qunliang Song
Single-electrode triboelectric nanogenerator (SE-TENG) is essentially useful when only one triboelectric electrode can connect to external load. Conventional metal electrodes are susceptible to corrosion in open environments characterized by high humidity and acidic or alkaline conditions. Thus, the material used for the triboelectric layer must exhibit robust resistance to environmental acids and alkalis. To achieve this target, advancements have been made to wrap up metal electrodes or substitute it with non-metallic conductive materials. However, the non-metallic conductive materials have not been explored their capabilities of acting as both electrodes and triboelectric layers. In this work, carboxylate cellulose nanofibers (CNF), graphene nanosheets (GN), and citric acid (CA) were utilized to create a conductive nanofiber/graphene (CNF/GN-CA) film with superior acid/alkali resistance. We develop a single-electrode mode TENG named CGC-TENG, in which this CNF/GN-CA worked as both an electrode and a triboelectric material. The CGC-TENG demonstrated stable output over 15,300 cycles and remained stable after 10 h immersion in pH = 1 and pH = 14 solutions, showing superior acid/alkali resistance. Based on the better performance of CNF/GN-CA film with long-term stability, CGC-TENG was demonstrated as a “trigger functional sensor” with rapid response speed (0.35 s) and short recovery time (0.25 s). Thus, the CGC-TENG holds significant promise for applications in human-computer interaction systems under various harsh environmental conditions.
研究领域:
材料科学
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能源技术
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环境工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Water Process Engineering
·
2024
·
IF 6.3
Wei Wang,Weiyang Li,Haotian Li,Bowen Cheng,Yunbin Zhou,Xingyu Ma,Jinwei Chen
Water is a precious resource in space stations, and wastewater recycling is necessary to meet the needs of astronauts. In that respect, applying the high anti-pollution disk tubular reverse osmosis (DTRO) technique is a reliable way to remove pollutes from wastewater. Thin film composite (TFC) membrane treatment is the most frequently employed solution for purifying wastewater in industry; however, the intrinsic weaknesses of polymer membrane substrates, e.g., poor mechanical property, foulant adsorption and low resistance to acidic/basic conditions, greatly hamper their applications. In this study, the novel polysulfate (PSE) membrane substrates were prepared via non-solvent induced phase separation (NIPS) method. The microstructure and performance of PSE membrane substrates were comprehensively investigated at varying polymer concentration and nanoparticle types. The results showed that adding nanosilver to the support layer significantly enhanced the TFC- PSE/Ag membrane performance (up to 57 %) and tensile strength (by 4.57 ± 0.13). According to computational fluid dynamics (CFD) simulations, the optimized geometric design of deflectors would have noticeably improved the flow field distribution and strength, which was consistent with experimental data. The DTRO modules enabled the effective management of wastewater using simulated space bathing wastewater. The effluent met the water reuse criteria in terms of COD concentration, NH 3 -N concentration, conductivity and turbidity whose respective values were 15 mg/L, 0.21 mg/L, 60 μS/cm, and 0.9 NTU. The proposed DTRO modules own antifouling and acid/alkaline-resistance, indicating their remarkable application potential in the large-scale recovery of bathing wastewater from the earth or space station.
研究领域:
环境工程
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材料科学
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水处理技术
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航天工程
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
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2021
·
IF 7.514
Yijun Zhang,Xiangjun Ding,Meiqing Li
Mung bean protein was enzymatically hydrolyzed with either alcalase, neutral protease, or papain. The mung bean protein hydrolysates (MPH) showed good ability to chelate ferrous ions, and the chelates had high stability in vitro . The hydrolysates prepared by alcalase showed the highest degree of hydrolysis and the highest ferrous chelating rate. Single factor tests showed that the pH and the material ratio had significant effects on ferrous chelating rates. The optimal MPH to FeCl 2 ·4H 2 O material ratio was 8:1 (w/w) and the optimal pH of the reaction was 7.0, which yielded a chelating rate of 96.19 ± 0.94%. The fraction 3 with the highest ferrous chelating activity up to 61.25 ± 1.02 μg/mg was obtained from MPH by affinity chromatography. Meanwhile, the MPH-Fe complex had higher digestive stability than just MPH in both in vitro and acid-alkali tolerance assays. The characterization results showed that ferrous ions mainly combined with the amino, carboxyl, imidazole and other chelating active groups in mung bean peptides to form peptide-iron chelates. Scanning electron microscopy (SEM) analysis showed that mung bean peptide chelated ferrous ions to form polymer particles. These results provided insight into ways to develop functional foods such as iron-fortified cereals.
研究领域:
食品科学
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生物化学
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营养学
✓ 已验证
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）