DESALINATION
·
2025
·
IF 9.8
Bingzhi Yi,Lulu Liu,Huibiao He,Sanchuan Yu,Doufeng Wu,Congjie Gao
In response to the critical challenge of managing dye wastewater in the textile industry, this research presents an economically viable modification approach to enhance the dye/salt separation efficacy and operational stability of polyamide (PA) based nanofiltration membranes. By incorporating diethanolamine (DEA) as piperazine-aqueous phase additive and polyquaternium-10 (PQ-10) as surface modifier, this technique significantly optimized the properties of loose nanofiltration membranes. Structural modifications resulted in a significant reduction in surface zeta potential at pH 7.0, from −28.9 mV to −2.0 mV, expanded the molecular weight cut-off (MWCO) and most probable pore radius from 360 to 2340 Da and 0.28 to 0.64 nm, respectively. These changes led to high water permeability of 420.4 L·m −2 ·h −1 ·MPa −1 and much low sodium sulfate (Na 2 SO 4 ) rejection of 10.3 %, while maintaining a 98.9 % rejection for dye Congo red (CR). Long-term operational tests demonstrated stable rejection of approximately 98 % for CR and 11 % for Na 2 SO 4 over 50.0 h, affirming the high separation efficiency and good durability of membranes. This enhancement in dye/Na 2 SO 4 separation not only optimizes the balance between permeability and selectivity but also shows significant potential for scaling to industrial applications. The findings provide a robust strategy for addressing critical demands in wastewater treatment within the industry.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2022
·
IF 7.139
Zhaojie Yang,Minghua Zhang,Zhixin Zhao,Wenting Lan,Xi Zhang,Minmin Fan
To avoid the detrimental effect of aryl ethers on the alkali stability of anion exchange membrane (AEM), elaborately designed and synthesized poly(styrene- co -4-vinyl pyridine) (PS4VP) copolymer without aryl ether linkages is used to prepare AEMs. By introducing commercialized polyquaternium-10 (PQ-10) as the main ion-conducting molecule, the fully-interpenetrating polymer network quaternized PS4VP/PQ-10 (F-IPN QPS4VP/PQ-10) AEMs are prepared by cross-linking PS4VP and PQ-10, respectively. The as-prepared F-IPN QPS4VP/PQ-10 AEMs have obvious nanoscale microphase-separated morphologies, which ensure the membranes have good mechanical properties and dimensional stability. With optimized component ratios, F-IPN QPS4VP/PQ-10 AEM exhibits high ionic conductivity (74.29 mS/cm at 80 °C) and power density (111.83 mW/cm 2 at 60 °C), as well as excellent chemical stabilities (94.36% retaining of initial mass after immersion in Fenton reagent at 30 °C for 10 days, and 92.28% retaining of original ionic conductivity after immersion in 1 M NaOH solution at 60 °C for 30 days), which are greater than those of semi-interpenetrating polymer network QPS4VP/PQ-10 AEM. In summary, a combination of fully-interpenetrating polymer network and stable polymer chains and ion-conducting moieties is found to effectively overcome the trade-off between high ionic conductivity and good dimensional/chemical stabilities.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Xiaojing Wu,Xiangyu Liu,Jingxin Hou,Jinhu Liu,Zheng Lian,Xueqin Sun,Lingyu Du,Litao Kang
Increasing the active material loading on electrodes provides an effective approach for improving the energy density of batteries. However, this approach is always hindered by intractable challenges such as poor structural stability, slow reaction kinetics, and low active material utilization. In this paper, a high-performance double-fiber interlocking binder system is developed to construct high-performance iodine cathodes, by leveraging a polyquaternium-10 (P10, a cationic cellulose) waterborne binder and a bacterial cellulose (BC) reinforcing fiber. The synergistic effect of mechanical interlocking and hydrogen bonding between BC and P10 forms a robust 3D network, enabling the construction of high-mass-loading freestanding I 2 @AC cathodes. Furthermore, the highly hydrophilic BC-P10 network ensures rapid and uniform electrolyte infiltration, facilitating fast ion transport and full material utilization. At the same time, the network can firmly anchor the I 2 @AC active material and the polyiodide intermediates, suppress the detrimental polyiodide shuttling and self-discharge, while retaining the mechanical strength and structural integrity. At routine iodine loading mass (2–3 mg cm −2 ), the BC-P10-bonded cathode delivers much higher capacity (182.6 vs.150.6 mA h g −1 , 0.2 A g −1 ), better rate capability (137.6 vs.75.4 mA h g −1 , 5.0 A g −1 ) and higher anti-self-discharge performance (capacity retention after 200 h: 76.0 vs. 68.4 %), compared with the conventional PVDF-bonded cathode. At an ultrahigh iodine loading mass of 32 mg cm −2 , the BC-P10-bonded cathode delivers still an exceptional capacity of 150.3 mA h g −1 at 0.2 A g −1 (corresponding to an areal capacity of 4.8 mAh cm −2 ). The application viability of this binder system has also been demonstrated by constructing high-mass-loading rollable pouch batteries. This work opens a promising avenue for the development of high-performance iodine cathodes.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Sustainable Chemistry & Engineering
·
2024
·
IF 7.1
Xiaojing Wu,Rui Zhang,Hanbing Wang,Xujing Sun,Ning Luo,Dongjiang You,Lingyu Du,Yunming Li,Litao Kang
Despite showing low cost, inherent safety, and high suitability, the rechargeable Zn–I2 aqueous batteries are still seriously suffering from self-discharge and energy density issues stemming from I2 dissolution, polyiodide shuttling, and low I2 mass loading. Herein, we develop a novel polyquaternium-10 (P10, a cationic cellulose)-based binding system to simultaneously circumvent these issues. The water-borne P10 binder can suppress I2 dissolution and polyiodide shuttling by not only adsorbing polyiodides via its quaternary ammonium groups and oxygen heteroatoms but also eliminating the use of toxic, expensive, and I2-dissolving organic solvents (e.g., N-methylpyrrolidone, NMP), enabling a facile and green cathode-fabricating process. More importantly, the P10 binder is conducive to the preparation of thick cathode coatings with high I2 mass loadings, thanks to its high elasticity and mechanical toughness after swelling by the electrolyte. As a result, Zn–I2 batteries prepared with the P10 binder demonstrate much better anti-self-discharge performance than those prepared with conventional PVDF binders (capacity retention: 84 vs 63% after 200 h of open-circuit storage). Even at an ultrahigh I2 mass loading of 14.5 mg cm–2, the batteries can still deliver significant specific capacity (216 mAh g–1) and cyclability (96.8% capacity remained after 385 cycles). This binder should be highly compatible with other performance-improving strategies, providing a green yet affordable approach for the construction of high-performance Zn–I2 aqueous batteries.
研究领域:
电化学
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材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
MACROMOLECULAR MATERIALS AND ENGINEERING
·
2020
·Vol. 306
·期 1
·2000506
·
IF 3.853
Zhaojie Yang,Minghua Zhang,Yafei Xiao,Xi Zhang,Minmin Fan
Anion exchange membranes (AEMs) are one of the core components of AEM fuel cells. A series of poly(vinyl alcohol)/polyquaternium-10 (PVA/PQ-10) AEMs with semi-interpenetrating networks (s-IPNs) are prepared by a simple solution-casting method using glutaraldehyde (GA) as a cross-linking agent. Subsequently, the prepared PVA/PQ-10 cross-linked membranes are characterized by Fourier transform infrared spectroscopy, scanning electron microscopy, thermogravimetric analysis, mechanical analysis, water uptake and swelling ratio tests, ion exchange capacity (IEC) tests, ionic conductivity measurements, and oxidative/alkaline stability tests. The effects of the mass ratio of PVA and PQ-10 and the amount of cross-linking agent GA on the performance of the PVA/PQ-10 cross-linked membranes are systematically explored. The results show that the cross-linked PVA/PQ-10 AEMs have high IEC and low water uptake and swelling ratio, and its maximum ionic conductivity can reach 79.37 mS cm –1 at 80 °C. In addition, the PVA/PQ-10 cross-linked membrane has good oxidative and alkaline stability under optimal preparation conditions. These results may provide valuable insights toward more effective scheme designs and new, simple preparation methods for AEMs with s-IPN structures.
研究领域:
材料科学
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化学工程
·
能源材料
·
膜技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
·
2025
·
IF 6
Xiaoyu Ji,Yuxin Tang,Xin Feng,Jiajin He,Hongyan Tang
In this study, NF membranes (DP NF membranes) with high permeability and excellent antifouling performance were fabricated by 3,5-diaminobenzoic acid (DABA) with steric hindrance through interfacial polymerization and grafting quaternized cationic cellulose derivative polyquaternium-10 (PQ10). The incorporating of DABA and PQ10 was verified through XPS and FTIR characterization. Smoothness of membrane surface was revealed through SEM and AFM. The modified membranes showed a remarkable increase in hydrophilicity, as evidenced by a reduction in water contact angle from 67.07° for PVDF to 30.70° for DP NF membranes. The water flux of the DP NF membrane reached 33.7 L·m −2 ·h −1 . MgSO 4 and Na 2 SO 4 rejection rates of DP NF membranes were 96.4 % and 94.1 %, respectively. DP NF membranes demonstrated high flux recovery ratios, achieving 97.6 % for bovine albumin, 96.8 % for humic acid, 96.4 % for sodium alginate, and 95.4 % for oil/water emulsion. After three fouling cycles, a slight decline was observed to DP NF membranes. Besides, rejection rates and water flux values exhibited no substantial alterations following long-term fouling tests that lasted for 100 h. These findings indicated that the membranes possessed high permeability and excellent antifouling performance, offering a facile and effective method for creating NF membranes for advanced water treatment applications.
✓ 已验证
产品关联
DOI
高影响因子
MACROMOLECULAR MATERIALS AND ENGINEERING
·
2021
·Vol. 306
·期 11
·2100433
·
IF 4.367
Zhonglong Luo,Jiulong Zhou,Zhe Lu,Hongqiu Wei,You Yu
Natural polysaccharides (NPS) are regarded as biomolecular and structural components for preparing high-performance tough hydrogels. But the one-step fabrication of NPS-containing hydrogels in seconds and the template-free design of complicated high-resolution structures are still significant challenges in this field. To meet these requirements, various NPS-containing tough hydrogels are fabricated and processed into 2D/3D structures via the combination of Ru(bpy) 3 2+ -mediated photochemistry and extrusion 3D printing technique. The whole fabrication process is one-step, completed in tens of seconds under visible light irradiation. It is found that the used NPS plays a key role in achieving the fabrication of high-performance structured tough hydrogels. The high reactivity of functional groups in the used NPS can shorten their gelation times. Long rigid chains of the used NPS, their hierarchical assemblies, and contrasting multinetworks benefit from the efficient dissipation of mechanical energy and enhancement of its operational stability. Strong supramolecular interactions enable hydrogel precursors to have high viscosities, therefore providing good controllability to design high-resolution and complicated tough hydrogel structures via extrusion 3D printing. It is anticipated that this straightforward fabrication strategy and findings will open new horizons for NPS-containing materials.
研究领域:
材料科学
·
生物医学工程
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Energy Materials
·
2023
·
IF 6.4
Zhixin Zhao,Zhaojie Yang,Minghua Zhang,Wenhao Du,Wenting Lan,Xi Zhang,Minmin Fan
To facilitate large-scale commercial applications of anion exchange membrane fuel cells, high ionic conductivity and long-term durability of anion exchange membranes (AEMs) are crucial. Herein, poly(styrene-co-4-vinylbenzyl chloride) (PSVBC) without aryl ether linkages was synthesized by the radical bulk polymerization using styrene (St) and 4-vinylbenzyl chloride (VBC) as monomers. Then, using PSVBC as the framework material and secondary anion carrier, and polyquaternium-10 (PQ10) as the main anion carrier, the tripartite cationic full-interpenetrating polymer network (F-IPN QPSVBC-PQ10) AEMs were fabricated by the chemical crosslinking method. Upon preparation, the AEMs with distinctive nano-sized microphase separation can maintain a suitable swelling capability, assuring stable mechanical properties, dimensional stability, alkaline stability, and oxidation resistance, surpassing their semi-interpenetrating polymer network QPSVBC-PQ10 AEM counterpart. Specifically, the ionic conductivity and peak power density of the optimally formulated AEM were 81.89 mS/cm and 119.31 mW/cm2, respectively. Meanwhile, 91.06% of the initial mass and 88.37% of the original ionic conductivity were maintained after successive 10-day oxidation test and 30-day alkali resistance test. In summary, the unique design of tripartite cationic F-IPN QPSVBC-PQ10 AEMs without aryl ether linkages is undoubtedly beneficial to further promote the development of high-performance anion exchange membranes.
研究领域:
材料科学
·
能源科学
✓ 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）