CHEMICAL ENGINEERING JOURNAL
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2026
·
IF 13.2
Lu Zheng,Saisai Ju,Xiong Li,Yongde Ma,Hongwei Zhang,Zhenping Cai,Yanning Cao,Kuan Huang,Lilong Jiang
Efficient capture of residual NH₃ from Haber-Bosch recycling gas is essential to improve process efficiency and reduce environmental impact. In this study, a series of sulfonated porous organic polymers (PTO-1S, PTT-1S, PTF-1S) were fabricated by a post-sulfonation strategy using phenolic hydroxyl-containing precursors to capture NH 3 . Comprehensive characterizations of the sulfonated derivatives demonstrated not only the successful grafting of –SO₃H groups, but more importantly, a cooperative effect with the native phenolic –OH groups. The optimized PTO-1S achieves an outstanding NH₃ capacity of 11.52 mmol/g (at 298.2 K and 1 bar), with particularly impressive performance at low pressures (5.56 mmol/g at 313.2 K and 0.03 bar), surpassing most reported adsorbents. Mechanistic studies revealed that this cooperation creates an optimal balance of strong chemisorption (–SO₃H) and reversible hydrogen bonding (–OH), which is identified as the origin of the high capacity and exceptional cycling stability (< 1% capacity loss/cycle). Besides, the sulfonated samples maintain excellent selectivity under simulated industrial conditions (NH₃/N₂/H₂ mixtures) and a rapid adsorption rate (90% saturation within 2 min), demonstrating their potential for practical NH₃ recovery applications.
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MACROMOLECULAR BIOSCIENCE
·
2025
·
IF 4.1
Wanyi Zhao,Haoran Chen,Man Zhang,Zhongbing Huang,Changsheng Zhao
Vascular restenosis, a significant complication after stent implantation, originates from the migration of vascular smooth muscle cells to the intima and the excessive extracellular matrix deposition, resulting in intimal hyperplasia. Thus, enhancing endothelial cell adhesion and reducing smooth muscle cell adhesion capacity are crucial to address this issue. Heparin, a naturally derived glycosaminoglycan, exhibits excellent anticoagulant activity and endothelial cell promoting effects, yet its clinical utility is constrained by bleeding risks, supply instability, immunogenicity, and demanding storage conditions. In this study, sulfonated carboxymethyl chitosan (SCCS) is employed as a heparin-mimicking polymer, immobilized on a glass substrate via dopamine-mediated adhesion. Compared with carboxymethyl chitosan, the SCCS-coated substrate significantly promotes endothelial cell adhesion while effectively inhibiting smooth muscle cell attachment. Additionally, the whole blood cell analysis and complement activation results exhibit that the SCCS coating has excellent blood compatibility. These findings suggest that the SCCS coating has the potential to be applied on various vascular stents to prevent restenosis, offering a nobel strategy for improving vascular interventional therapy.
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JOURNAL OF MEMBRANE SCIENCE
·
2025
·
IF 9
Mengen Zhang,Qiyang Xi,Linlin Wang,Ziang Mu,Rui Wang,Qinxing Xie,Zhenhuan Li,Maliang Zhang
This article uses melt-blown non-woven fabric prepared from polyphenylene sulfide (PPS) resin and benzophenone as the support layer. MIL-101-NH 2 has been incorporated through functional modification to enable the in-situ growth on PPS non-woven fabric's continuous and dense fiber network. The pores of the matrix are filled with Nafion solution and hot pressed to form an extremely dense and hydrophilic reinforced composite proton exchange membrane (PEM). This strategy effectively leverages the acid-base pairs of MIL-101-NH 2 and sulfonic acid groups, thereby constructing and shortening the proton transport pathway. Molecular dynamics simulations show that proton transfer is mainly through the Grotthuss mechanism, while the mass transfer across the membrane is characterized by uniformity and continuity. The methanol permeability is significantly reduced compared to commercial Nafion 117. Based on PPS non-woven fabric, hybrid membranes have excellent oxidation resistance and remarkable heat resistance. They also rely on the dense network structure of PPS non-woven fabric and electrostatic solid interactions between acid and alkali, resulting in excellent mechanical properties and swelling rate. In single-cell performance testing, the peak power density reached 78.77 mA/cm 2 , exploring the application and research of PPS melt-blown fabric and providing new insights for the development preparation of low-cost and high-performance PEMs.
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Symmetry-Basel
·
2022
·Vol. 14
·期 11
·2293
·
IF 2.94
Fuchong Li,Wei Liu,Yang Gao,Li Tian,Junhong Guo,Jinfeng Cui,Baoping Yang
Organic fluorescent materials are widely applied in different important fields, such as light-emitting display, explosive detection, molecular imprinting, and so on, because of their low cost, easy functionalization, and large-scale fabrication. In this work, we designed and synthesized a new kind of organic fluorescent polysulfate composite material through post-sulfonation sulfur-fluorine exchange polymerization (a new kind of click chemistry) by symmetric molecular. Sulfur-fluorine exchange polymerization: symmetrical structure SO2F−R1−SO2F molecular reacted with symmetrical OH−R2−OH molecular through nucleophilic reaction in the presence of inorganic base. The polysulfate material was further modified by ClSO3H to get PSE−SO3H materials. Tb3+was highly dispersed on PSE−SO3H to afford organic-inorganic hybrid fluorescent materials through the conventional coordination chemistry method. The emission wavelength of the organic-inorganic hybrid fluorescent polymer PSE−SO3H−Tb3+was between 475 and 685 nm, the quantum yield reached 1.18%, and fluorescence lifetime lasted for 730.168 us, with the pure green light emission and long light-emitting lifetime. The fluorescence film was prepared through phase transformation method by the fluorescent polymer material PSE−SO3H−Tb3+. The film has the strong stability property in different pH conditions (pH 1~13). Thus, this kind of organic fluorescent polysulfate composite material may have certain prospects application in terms of detection and luminescence in extreme chemical environments in the future.Keywords:polysulfate material;rare earth matal;Tb3+;fluorescence;polymer;symmetric molecular;stepwise polymerization
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Membranes
·
2022
·Vol. 12
·期 3
·322
·
IF 4.562
Xia Sun,Ying Liu,Ruibo Xu,Yongsheng Chen
Ion exchange membranes (IEMs), as a part of the reverse electrodialysis (RED) system, play an important role in salinity gradient power (SGP) generation. Structure optimization of IEMs is critical to increase the power production by RED. In this work, metal organic framework (MOF)-derived nanoporous carbons (hollow zeolitic imidazolate framework (ZIF)-derived nanoporous carbons, HZCs) were incorporated in a sulfonated poly (2, 6-dimethyl-1,4-phenylene oxide) (sPPO) membrane to prepare an organic−inorganic nanocomposite cation exchange membrane (CEM). Physicochemical properties, electrochemical properties, and power generation of the synthesized nanocomposite membranes with different HZCs loading were characterized. The results show that the incorporated HZCs could tailor the microstructure of the membrane matrix, providing a superior performance of the nanocomposite membrane. With a HZCs loading of 1.0 wt.%, the nanocomposite membrane possessed the highest permselectivity of 77.61% and the lowest area resistance of 0.42 Ω·cm2, along with a super gross power density of 0.45 W/m2, which was 87.5% (about 1.87 times) higher than that of the blank sPPO membrane. Therefore, incorporating of an appropriate amount of HZCs in the ion-exchange membrane can improve the performance of the membrane, providing a promising method to increase the power generation of the RED system.Keywords:metal-organic framework (MOF);porous carbon;cation exchange membrane;reverse electrodialysis;salinity gradient power
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2021
·
IF 5.816
Xue Li,Hong Zhang,Cheng Lin,Zhenfeng He,Vijay Ramani
Radiation-induced graft polymerization is introduced to effectively fabricate proton exchange membrane based on 12.5 μm fluorinated ethylene propylene (FEP) film. The graft side chains penetrate FEP film and distribute inside the bulk matrix evenly. The membranes exhibit hydrophilic/hydrophobic microphase-separated morphology as well as good thermal stability . The influences of irradiation parameters on the membrane property are investigated and the resulting membranes (named FEP-g-PSSA) exhibit excellent physicochemical properties . Membrane with 27.48% degree of graft and 130.1 mS cm −1 proton conductivity is employed for fuel cell performance measurement. Under optimized operate conditions (80 °C, 75% relative humidity), the power density could reach up to 0.896 W cm −2 , inspiring for fuel cell application . The mass-transport-controlled polarization of membrane electrode assembly (MEA) based on FEP-g-PSSA membrane is higher than Nafion® 211 within the whole current density range and the gap is widening with increasing current density. At 2.0 A cm −2 , the mass transfer polarization of FEP-g-PSSA reaches up to 0.204 V, far higher than Nafion® 211 (0.084 V). By promoting the compatibility between the ionomer in the catalyst layer and FEP-g-PSSA membrane and optimizing the membrane/catalyst layer/gas diffusion layer interfaces , the fuel cell performance could be significantly enhanced, making the FEP-g-PSSA membranes promising in fuel cell application.
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LANGMUIR
·
2021
·
IF 3.882
Jin Wang,Qiong Du,Jiashuang Luan,Xuanbo Zhu,Jinhui Pang
Membrane separation has been considered to be the most effective decontamination method for oily waste water. The most significant point of membrane separation is the resistance against membrane fouling. Fabricating hierarchical architectures on the membrane surface is an available approach to improving its anti-fouling property. In this study, ZnO nanoneedles were successfully anchored onto surface-sulfonated poly(ether-ether-ketone) (PEEK) felt via UV/ozone cleaning and hydrothermal synthesis. The modified felt (PEEK-f-Z) showed much better anti-fouling properties and far higher rejection height (33 cm) than the unmodified felt (17 cm) with a separation efficiency up to 99.99%. The enhanced separation properties could be attributed to the stronger water locking capability of the hierarchical architectures on the surface. Furthermore, benefiting from the great chemical stability of PEEK substrates and ZnO nanoneedles, the as-prepared membrane exhibited admirable solvent resistance, mechanical strength, and thermal stability. As a result, PEEK-f-Z could even separate immiscible organic liquids with different polarities and collect hot water from the oil/water mixture, promising to be used under severe conditions.
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高影响因子
Nanoscale Advances
·
2021
·Vol. 3
·期 10
·2924-2933
·
IF 4.553
Hua Tian,Kaixin Zhu,Yang Jiang,Lin Wang,Wang Li,Zhifeng Yu,Cunqi Wu
Graphene-based hybrid composites as positive electrodes have aroused great interest in the field of hybrid supercapacitors. However, the charge storage capability of hybrid composites suffers from the scarce interaction between their end members to some extent. Herein, a hybrid composite with electrostatic interaction was obtained by employing a heterogeneous assembly strategy of Ni–Co layered double hydroxide (LDH) and sulfonated graphene nanosheets (SGN). Depending on the substitution of the negatively charged SGN for the interlayer nitrate anions compensating for the positively charged LDH host slabs, the abundance of Ni3+ on the surface of the hybrid composite could be increased to intensify the electrostatic interaction within hybrid composites. As expected, the effective coupling of LDH with SGN ensured the uniform incorporation of heterogeneous components. The unique structure of the hybrid composite accelerated electron transfer and ion diffusion processes during electrochemical reactions, which is beneficial to improve the electrochemical performance of battery-type electrodes. Further evaluation showed that the specific capacity of the LDH/SGN hybrid composite is 1177 C g−1 (2354 F g−1) at 1 A g−1. Additionally, the LDH/SGN//AC hybrid supercapacitor achieved an energy density of 43 W h kg−1 at 800 W kg−1 and still retained 94% of its initial specific capacitance over 10 000 cycles. The boosting effect of the electrostatic interaction within the hybrid composite on electrochemical properties offers a novel pathway for the development of supercapacitors.
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MACROMOLECULAR RESEARCH
·
2021
·Vol. 29
·期 3
·199-210
·
IF 2.227
Wu Zhihui,Shen Chunhui,Gao Shanjun,Zhu Xi,Zhang Mingliang,Ding Ao
A series of proton exchange membranes were prepared by incorporating phosphonic functionalized siloxane into sulfonic poly(2,6-dimethyl-1,4-phenyleneoxide) (SPPO) and imidazole functionalized poly(2,6-dimethyl-1,4-phenyleneoxide) grafted with siloxane (IPPO-Si). Phosphonic acid functionalized siloxane was synthesized from amino trimethyl phosphonic acid (ATMP) and (3-aminopropyl)triethoxysilane (APTES). FTIR results showed that 1-methylimidazole and APTES were successfully grafted onto polyphenylene oxide, and APTES successfully formed Si-O-Si crosslinked networks through hydrolytic crosslinking. The membranes were thermally stable up to 220 °C and exhibited excellent oxidative stability and mechanical performance. We also measured the proton conductivity of the membranes. The results showed that the proton conductivities of the composite membranes increased with the increasing of SPPO content at different degrees under high (100 °C–160 °C) and low (25 °C–80 °C) temperature conditions. Furthermore, the IPPO-SI-P/SPPO-30 has the best conductivity, reaching to 0.1131 S cm −1 at 80 °C, 100%RH and 0.1049 S cm −1 at 160 °C, 5%RH, respectively. Therefore, this novel membrane acts as a potential candidate for proton exchange membranes with a wider applicable temperature (25 °C–160 °C).
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CHINESE JOURNAL OF CHEMICAL ENGINEERING
·
2020
·
IF 2.627
Huan Li,Yao Zhong,Luxi Wang,Qiang Deng,Jun Wang,Zheling Zeng,Xinxiang Cao,Shuguang Deng
In the dehydration of fructose to 5-hydroxymethyl furfural (HMF), in situ produced water weakens the acid strength of the catalyst and causes the rehydration of HMF, causing unsatisfactory catalytic activity and selectivity. In this work, a class of benzenesulfonic acid-grafted metal–organic frameworks with strong acidity and hydrophobicity is obtained by the direct sulfonation method using 4-chlorobenzenesulfonic acid as sulfonating agent. The resultant MOFs have a specific surface area of greater than 250 m 2 ·g −1 , acid density above 1.0 mmol·g −1 , and water contact angle up to 129°. The hydrophobic MOF-PhSO 3 H exhibits both higher catalytic activity and selectivity than MOF-SO 3 H in the HMF synthesis due to its better hydrophobicity and olephilicity. Moreover, the catalyst has a high recycled stability. At last, fructose is completely converted, and 98.0% yield of HMF is obtained under 120 °C in a DMSO solvent system. The successful preparation of the hydrophobic acidic MOF provides a novel hydrophobic catalyst for the synthesis of HMF.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2020
·
IF 3.573
Yao Zhong,Qing Yao,Peixin Zhang,Huan Li,Qiang Deng,Jun Wang,Zheling Zeng,Shuguang Deng
The production of 5-hydroxymethylfurfural (HMF) by the acid-catalyzed dehydration of fructose is of great significance for the comprehensive utilization of biomass resources. However, the water generated in situ not only leads to the deactivation of the active sites but also triggers the rehydration side reaction of HMF, resulting in an unsatisfactory catalytic activity and selectivity. Herein, for the first time, metal–organic frameworks (MOFs) with strong Brønsted acidity and hydrophobicity were prepared by grafting arenesulfonic acid by a diazo method. These functionalized MOFs have a large specific surface area of 1700–2600 m2/g, a high acid density of over 1.2 mmol/g, and a strong hydrophobicity with an H2O contact angle of greater than 125°. Compared with the MOF directly functionalized with sulfonic acid, the arenesulfonic acid-functionalized MOFs, which have a stronger hydrophobicity, exhibit higher activity and selectivity (up to 98.3% yield) in the transformation of fructose to HMF. Meanwhile, these arenesulfonic acid-functionalized MOFs also exhibit an excellent HMF yield for glucose and inulin reactions via the cooperative catalysis of Lewis and Brønsted acids. Furthermore, the good activity and stability of the functionalized MOFs can be maintained after recycling for five runs. The successful preparation of hydrophobic acidic MOFs provides not only an efficient catalytic system for the synthesis of HMF but also a novel, efficient route for MOF functionalization.
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Journal of Cleaner Production
·
2020
·
IF 7.246
Bowei Shen,XueJun Yu,Farong Zhang,Wenxiu Jiang,Hui Yuan,Zhiquan Pan,Hong Zhou
A new method of the catalytic alcoholysis of Dioscorea zingiberensis C. H. Wright into diosgenin by magnetic solid acid in a Teflon-lined stainless-steel autoclave for the first time. The magnetic solid acid, Fe 3 O 4 @SiO 2 –SO 3 H, was prepared by the connecting the –SO 3 H groups on the surface of SiO 2 encapsulated Fe 3 O 4 microspheres . The synthesized catalysts were systematically analyzed by Fourier transform infrared (FT-IR) spectroscopy, thermogravimetric analyzer (TGA), X-ray diffraction (XRD), vibrating sample magnetometry (VSM), temperature programmed desorption of ammonia (NH 3 -TPD), scanning electron microscope (SEM), transmission electron microscope (TEM) and transmission electron microscope-mapping(TEM-mapping). To obtain the best conditions for the alcoholysis of Dioscorea zingiberensis C. H. Wright, single factor test was first utilized to determine the range of optimal conditions and optimized by response surface method . A three-level-three-factor Box-Behnken design was adopted to illustrate the effect of solid acid mass, solvent volume, reaction time and temperature on the yield of diosgenin. The optimum conditions obtained by response surface methodology were: 0.42 g Fe 3 O 4 @SiO 2 –SO 3 H, 4.38 mL solvent of ethanol, the reaction temperature at 100 °C and 6.09 h reaction time. At the optimal conditions, this method can reach the highest yield 2.64% from Dioscorea zingiberensis C. H. Wright. The yield of the new method was 21.66% higher than conventional sulfuric acid hydrolysis based on the analysis results of UV and HPLC. Importantly, the catalysts and solvents used in the alcoholysis process by the solid acid can be recovered, which is green and environmentally friendly, indicating that the catalytic alcoholysis with magnetic solid acid under hydrothermal conditions had a broad application prospect in diosgenin production.
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