JOURNAL OF MEMBRANE SCIENCE
·
2026
·
IF 8.8
Yingyao He,Zixuan Ge,Dandan Su,Yi Yuan,Jianqiang Wang,Guiliang Li,Jie Gao,Mihail Barboiu,Fu Liu
Polyamide (PA) membranes prepared via interfacial polymerization have been widely used for nanofiltration (NF) processes for which breaking the permeability/selectivity trade-off remains a key challenge. Lower performances are obtained from thick or defect polyamide layers, largely due to the rapid reaction of monomers during interfacial polymerization. In this study, functional additives, bis-hexylureido-imidazole (DC6) and bis-octylureido-imidazole (DC8), were mixed with the aqueous phase containing piperazine (PIP) to regulate the interfacial polymerization reaction and indirectly enhance water permeation behaviors. DC8 could form a self-assembled tetrameric I-quartet superstructure in the aqueous phase, which slows down PIP diffusion towards the oil-water interface, promoting the formation of a thinner, and more uniform PA layer. Density functional theory (DFT) and molecular dynamics (MD) simulations were further used to confirm the above findings. The optimized membrane exhibited excellent rejection of both Na 2 SO 4 (96.2 %) and MgCl 2 (93.7 %), ∼ 50% increased water permeability from 16.5 L·m -2 ·h -1 ·bar -1 up to 24.4 L·m -2 ·h -1 ·bar -1 and high (SO 4 2- /Cl - = 28.9, Mg 2+ /Na + = 13.0 selectivity) during 60 hours stable evaluation with mixed salts. The study offers a new strategy for regulating interfacial polymerization via self-assembled imidazole I-quartets and expands the application of such supramolecular assemblies in designing high-performance membranes for efficient nanofiltration.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2026
·
IF 3.1
Ben-Qing Huang,Ning Ding,Ji-Zhen Hu,Zhan-Jian Liu
Nanofiltration (NF) technology is an important technique for addressing the global water crisis, but the bacterial fouling in long-term running reduces the lifetime and limits the application of NF membranes. To solve this problem, a kind of sandwich-shaped thin-film composite (TFC) polyamide (PA) membranes with silver combined polymeric nanoparticles (PNs/Ag) as interlayer was fabricated in this work. Analysis via energy-dispersive spectroscopy (EDS) and field-emission scanning electron microscopy (FE-SEM) confirmed the successful formation of a silver layer through in situ reduction, which was observed to uniformly encapsulate the polymeric nanoparticle surfaces. The prepared NF membranes had a pure water flux of 71.0 L m −2 h −1 and Na 2 SO 4 rejection of 96.7% at 5.0 bar. The application prospect of NF membranes was proved by a series of testing under different operation conditions. The successful introduction of PNs/Ag enhanced the antibacterial performance of the NF membrane against E. coli and S. aureus in static bacteria adhesion test. This work proposes a feasible strategy for the construction of NF membranes with antibacterial property.
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Yingfei Wang,Yuqiong Li,Fengliang Wang,Chuanhao Li
Recovering H 2 energy from photocatalytic treatment of antibiotic-contaminated wastewater is considered an appealing strategy to mitigate the energy crisis and environmental issues. Herein, we present a hard-template-assisted molten-salt pyrolysis strategy to synthesize mesoporous carbon nitride with a highly crystalline structure (mpg-CCN), which was utilized for the integrated adsorption-photocatalytic degradation of FQs and the conversion of wastewater to hydrogen. mpg-CCN exhibits excellent photocatalytic performance with an H 2 evolution rate of 10,482.5 μmol/g and an optimal FQs degradation efficiency of 98.6% after 10 h of visible light irradiation. Experimental and theoretical calculation results disclose that the unique mesoporous structure of mpg-CCN improves the surface diffusion and adsorption of FQs. In addition, the highly crystalline structure provides unblocked channel for the transfer of photo-induced charges and accelerates both H 2 evolution and FQs degradation kinetics. Significantly, mpg-CCN can be effectively utilized for the ex-situ remediation of FQs, enabling recovery from the adsorbed pollutants via simple light treatment.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 5
·124054
·
IF 7.5
Yuhan Guo,Zebiao Jiang,Yu Zheng,Bohan Xiao,Yunxia Zhao
This study evaluates the CO₂ capture performance and multiscale mechanisms of three tertiary amine–promoter blends: DEEA + PZ, DMEA + PZ, and DEEA + AMP. Spectroscopic characterization at 12 vol% CO₂ identified dominant reaction pathways, while cyclic performance was evaluated under simulated gas-fired power plant flue gas conditions (4 vol% CO₂, 95 °C regeneration). DMEA + PZ achieves a cyclic working capacity of 8.49 g CO₂/kg solvent—1.92 times that of the 30 wt% MEA benchmark—with a 48% reduction in relative regeneration energy consumption. In situ Raman and quantitative ¹H qNMR analyses show that all three systems operate predominantly via the bicarbonate pathway, with the PZ-carbamate decomposition rate considerably higher for DMEA + PZ (∼22%) than for DEEA + PZ (∼17%). AMP forms no detectable carbamate, relying exclusively on the bicarbonate pathway and exhibiting a discernible solvent volatilization trend. DFT calculations reveal that the stronger basicity of DEEA, arising from the inductive effect of its ethyl groups, yields higher absorption capacity but greater regeneration energy, whereas the narrower HOMO–LUMO gap of PZ enables rapid nucleophilic kinetics and the steric shielding of AMP precludes stable carbamate formation. Classical MD simulations show that compact PZ diffuses considerably faster than the sterically encumbered tertiary amines, while AMP-containing systems exhibit restricted diffusion; RDF analyses indicate steric shielding between the N centers of the main amine and promoter, with –OH-mediated hydrogen-bonding networks providing potential proton relay pathways. These insights offer a theoretical foundation for designing blended amine solvents for low-partial-pressure, waste-heat-driven CCUS applications.
✓ 已验证
产品关联
DOI
高影响因子
POLYMERS FOR ADVANCED TECHNOLOGIES
·
2026
·Vol. 37
·期 7
·e70668
·
IF 3.8
Ben-Qing Huang,Ji-Zhen Hu,Ning Ding,Zhan-Jian Liu
Nanofiltration (NF), an emerging technology for water treatment, is recognized for its energy efficiency, environmental friendliness, and high performance. Improving the antibacterial characteristics of NF membranes is crucial for expanding their practical applications. Herein, a novel thin-film composite (TFC) NF membrane was fabricated through interfacial polymerization (IP), during which silver modified polymeric nanoparticles were strategically incorporated into the nascent polyamide (PA) network. The resultant NF membranes exhibited a marked increase in permeability, achieving a flux of 85.6 L m −2 h −1 while maintaining a Na 2 SO 4 rejection of 97.6%. Under various operational conditions, the membrane demonstrated promising NF performance and stability, indicating its good application prospects. Furthermore, the membrane exhibited significant inhibiting effects against Escherichia coli and Staphylococcus aureus . The present work establishes a novel pathway for fabricating high-performance NF membranes with inherent antibacterial functionality, thereby offering significant potential to broaden the practical application scope of NF-based separation technologies.
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Huilin Li,Xuechong Ding,Teng Zhou
Reducing regeneration energy remains a central challenge in post-combustion CO 2 capture by chemical absorption. In this work, nine aqueous MDEA/DMEA/PZ blends were systematically screened using thermodynamic performance indicators, including the heat of absorption, heat capacity, and equilibrium CO 2 absorption capacity. Two formulations, D30P10 (30% DMEA +10% PZ) and M5D25P10 (5% MDEA +25% DMEA +10% PZ), were identified as the most promising candidates for achieving low regeneration energy. These two solvents were further evaluated against two benchmarks, 30 wt% MEA and M30P10 (30% MDEA +10% PZ), in cyclic absorption–desorption experiments. Among them, M5D25P10 delivered the best overall balance of stable cyclic performance and a cyclic capacity about 0.55 mol CO 2 /mol amine. Benefiting from its high cyclic capacity and low heat of absorption, this solvent achieved a regeneration energy of 2.98 GJ/t CO 2 , which was 21.2% and 4.5% lower than those of 30 wt% MEA and M30P10, respectively. Kinetic performance indicators, including the initial absorption rate ( r abs ini ) and the overall mass transfer coefficient ( K G ), were also evaluated, and M5D25P10 exhibited the highest mass transfer coefficient among all tested solvents. These results collectively confirm that M5D25P10 is a highly promising solvent for post-combustion CO 2 capture. Moreover, a robust empirical correlation between r abs ini and K G was established for the first time, providing a rapid and solvent-efficient means of estimating mass-transfer performance.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2026
·
IF 8.8
Cheng Yi,Qian Liu,Tengfei He,Yue Yao,Lijia Liu,Chunhong Zhang,Chao Wang
Membranes with excellent chlorine resistance are required for stable operation and long service life. Traditional polyamide (PA) nanofiltration (NF) membranes typically suffer from inadequate chlorine resistance. To overcome this critical challenge and the long-standing problem of insufficient permeability, a novel polyesteramide (PEA) NF membrane was fabricated. Specifically, naringin (NG), a naturally occurring polyphenol rich in hydroxyl groups, was introduced as a co-monomer with piperazine (PIP) in the aqueous phase for interfacial polymerization with trimesoyl chloride (TMC) in the organic phase. The chlorine-susceptible amide groups were partially substituted by intrinsically chlorine-resistant ester groups in the fabricated PEA membrane. As a result, the chlorine resistance of the PEA membrane was greatly enhanced, with Na 2 SO 4 rejection remaining above 93 % after exposure to 20,000 ppm h of free chlorine. The resulting PEA membrane exhibited reduced surface roughness and selective-layer thickness, coupled with a slight increase in pore size and free volume fraction, which was attributed to intermolecular interactions between NG and PIP in the aqueous phase. Consequently, the PEA membrane demonstrated a water flux approximately twice that of the PA membrane, while maintaining a high Na 2 SO 4 rejection rate of 99 % and rejecting more than 98 % of various antibiotics (e.g., cephalosporins and tetracyclines). Furthermore, the PEA membrane exhibited favorable antifouling performance, satisfactory anti-swelling property, and filtration stability under various conditions.
✓ 已验证
产品关联
DOI
高影响因子
DESALINATION
·
2026
·
IF 9.9
Zhongsen Yan,Zeqi Yan,Sufen Lin,Haiqing Chang,Kaiqin Xu,Gongduan Fan,Fangshu Qu
Novel CMCS sacrificial layer enhances silica scaling resistance in MD. • CMCS coatings can be removed and re-coated in situ. • Synergy of CMCS layer and smooth PVA substrate boosts silica scaling resistance. • CMCS-PVA membrane showed sustainable anti-silica performance in long-term tests. Membrane distillation (MD) is a promising technology for hypersaline wastewater treatment, yet it is often limited by severe silica scaling. This study proposes a carboxymethyl chitosan (CMCS) sacrificial layer strategy to achieve in situ silica scale removal and restore membrane reusability for MD. The influence of substrate properties on anti-scaling performance was systematically evaluated by depositing the CMCS layer onto Thin Film Composite (TFC) and Polyvinyl Alcohol (PVA) Janus membranes. Characterization results indicated that the CMCS coating significantly improved surface smoothness and introduced silica-resistant functional groups, reducing the average roughness (Ra) of the TFC and PVA membranes from 74.2 to 2.79 nm and from 8.26 to 1.19 nm, respectively. After a single-cycle silica scaling test, the CMCS-TFC and CMCS-PVA membranes retained 92.7% and 97.2% of their initial specific flux, respectively, 26.2 and 2.1 percentage points higher than their pristine counterparts. Notably, the CMCS-modified PVA membrane exhibited superior anti-scaling stability, maintaining a specific flux above 90% for the first 4 cycles and achieving a flux recovery ratio (FRR) exceeding 99% across all cleaning cycles. This synergistic effect between the CMCS sacrificial layer and the smooth PVA substrate effectively inhibited silica penetration, while enabling interfacial renewal and foulant removal via in situ exfoliation and re-deposition of the CMCS layer. This work provides a facile and robust approach for treating silica-rich hypersaline streams. Download: Download high-res image (137KB) Download: Download full-size image
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2026
·
IF 8.8
Wubin Wang,Jin Wang,Shengwei Chen,Yaxuan Liu,Yadong Hu,Guangxu Zhang,Xinyu Li
Efficient lithium-magnesium (Li/Mg) separation is pivotal for lithium extraction from salt lake brines by nanofiltration (NF) membranes. However, high-efficiency separation requires a highly uniform pore size distribution, which poses severe challenges to the structural regulation of conventional NF membranes. Herein, a weakly negatively charged PIP-SDS/TPC membrane was constructed via interfacial polymerization (IP) between piperazine (PIP) solution containing sodium dodecyl sulfate (SDS) and terephthaloyl chloride (TPC). Molecular dynamics simulations revealed that SDS slowed down PIP diffusion and promoted its homogeneous migration into the organic phase, favoring the formation of uniform pores under the linear crosslinking by PIP with TPC. Consequently, the resulting polyamide layer exhibited a narrow pore size distribution strictly confined within the hydrated diameter of Mg 2+ , imparting ultrahigh Mg 2+ rejection and significant negative rejection of Li + , with a Li/Mg separation factor of 130. Benefiting from the synergistic effects of charge repulsion and size sieving, superior separation factor of SO 4 2− and Cl − was also achieved 304. Furthermore, the PIP-SDS/TPC membrane maintains excellent separation performance in simulated salt lake brines, with rejection rates of −15.9% to 25.7% for monovalent ions (Li + , Na + , K + ) and 97.1% to 98.7% for divalent ions (Ca 2+ , Mg 2+ ), while retaining stable performance after chemical cleaning. This work offers a new strategy for rationally designing membrane microstructures to achieve efficient Li/Mg separation.
✓ 已验证
产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2026
·
IF 5.2
Tao Fu,Wanying Liu,Wenjia Wang,Tong-Tong Jia,Zhaozhou Li,Huawei Niu
Dual-mode hydrogel probe for meat freshness and anti-counterfeiting • Smartphone-compatible, visual H 2 S detection within 5 min • Low detection limit of 2.05 μM with high sensitivity and selectivity • Non-destructive monitoring of shrimp freshness at various temperatures • Moldable hydrogel patterns for anti-counterfeiting Hydrogen sulfide (H 2 S), with a smell of rotten eggs, is commonly found in spoiled and deteriorated foods, especially in protein-rich foods. Current methods for detecting meat freshness have several disadvantages, including unclear early indicators of spoilage, long microbial culture cycles, and high detection costs. In contrast, fluorescent probes are more convenient, require fewer complex operations, and are efficient, fast, highly sensitive, and accurate. The novel H 2 S fluorescent probe KJC features simple synthesis, good selectivity, high sensitivity, a wide detection range (0–300 μM), a wide pH range (6–10), and a low detection limit of 2.05 μM. For detecting H 2 S to assess meat freshness, attaching probe KJC to a hydrogel enables detection within 5 min. Combining smartphone-based Red, Green, Blue (RGB) quantification, the hydrogel sensor quantitatively tracked shrimp spoilage at 4 °C, 25 °C, and 35 °C. The hydrogel's RGB signal changes are strongly correlated with total volatile basic nitrogen (TVB-N) levels, confirming its reliability for assessing meat freshness. Furthermore, the hydrogel can be molded into various shapes, demonstrating its potential as an anti-counterfeiting label for food packaging. This dual functionality ensures food authenticity and helps consumers avoid counterfeit or substandard products. Download: Download high-res image (176KB) Download: Download full-size image
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2026
·Vol. 18
·期 30
·41834-41843
·
IF 7.8
Lin Wan-Ting,Chen Xiaohong,Luo Xiao-Wei,Li Wan-Long,Zhang Si-Yuan,Zhang Zi-Lu,Zhang Zi-Jun,Xu Zhi-Kang,Wan Ling-Shu
Separating monovalent ions from divalent ions remains a central challenge in resource recovery. While the classic poly(piperazine-amide) nanofiltration membrane exhibits superior rejection of divalent anion, the application in cation separation is constrained by the strongly negatively charged surface and limited size-sieving precision. To address this limitation, we propose a solvent treatment-induced optimization strategy for surfactant-tailored polyamide networks. The surfactant-assisted interfacial polymerization yields a dense and uniform nascent polyamide network that can withstand solvent treatment while preserving its cross-linked structure. Subsequent solvent treatment selectively removes oligomers trapped within the network, thereby refining the polyamide network architecture. This strategy facilitates the formation of a thinner polyamide selective layer that exhibits an attenuated negative surface charge and a more uniform pore size distribution. The optimized membrane achieves a dual enhancement in performance, exhibiting high mono-/divalent ion selectivity (Li + /Mg 2+ selectivity of 96.1 and Cl – /SO 4 2– selectivity of 1351) coupled with a high water permeance of 14.9 L m –2 h –1 bar –1 . This work provides a straightforward and effective method to refine surface properties and internal architecture of polyamide networks for efficient mono-/divalent ion separation.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
DESALINATION
·
2026
·
IF 9.9
Yaxuan Liu,Jin Wang,Wubin Wang,Yadong Hu,Shengwei Chen,Guangxu Zhang,Xinyu Li,Yuting Ma,Xin Zhang,Guohan Liu,Yan Wang,Liya Ma
Substrate pore size dictates monomer diffusion via capillarity. • 30 k Da substrate balances monomer transport & reaction, forming uniform sub-nm pores. • NF-30 k membrane achieves exceptional ion separation: S Cl , SO 4 = 108, S Li , Mg = 29.1. • NF pore distribution matching hydration diameters is the key to ion separation. • Membrane shows 240 h stability & superior Li/Mg separation in 5 simulated brines. Substrate properties influence polyamide (PA) formation during interfacial polymerization (IP), yet the relationship between monomer storage within the substrate and monomer replenishment toward the reaction interface remains unclear. Polyethersulfone (PES) substrates with different pore sizes were used to examine this relationship. Larger pore substrates have greater aqueous phase retention, while the apparent aqueous phase diffusion of piperazine (PIP) decreased with increasing pore size. The opposite trends indicate that greater monomer storage does not necessarily result in more effective monomer replenishment toward the reaction interface. Diffusion experiments and capillary analysis further show that substrate pore size regulates PIP diffusion and replenishment through capillary effects within pores filled with water, which alters the local monomer supply near the reaction interface and affects PA growth. The resulting PA layers therefore differed in thickness, morphology, and pore size distribution. Among the investigated substrates, PES-30 k provided a suitable balance between monomer replenishment and interfacial reaction, producing a more homogeneous sieving structure with a Li + /Mg 2+ separation factor of 29.1 and promising performance in simulated salt lake brines. This study provides new mechanistic insights into how substrate pore structure regulates interfacial polymerization and offers a mechanistic basis for the rational design of TFC nanofiltration membranes through substrate pore structure optimization.
✓ 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）