SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Yan Pan,Chuanming Tu,Xueyong Li,Luteng Gao,Wei Lan,Wenhai Zhang,Hong Meng
Compared with traditional polyamide membranes, polyimine membranes possess a more rigid structure and exhibit significantly enhanced swelling resistance in organic solvent nanofiltration, enabling highly selective separation. However, their intrinsic broad pore size distribution limits their application in high-precision separation scenarios. To address this issue, this study proposes a post-modification pore shrinkage strategy: first, a polyimine composite membrane is prepared via interfacial polymerization, followed by the in-situ polymerization of residual free p -phenylenediamine within the membrane initiated by ammonium persulfate, to construct an interpenetrating network composite membrane structure composed of porous polyimine and poly( p -phenylenediamine). Experimental results demonstrate that this method effectively improves the rejection performance of polyimine membranes toward small solute molecules. The optimized PPa-5@TpPa-2 composite membrane exhibits a methanol permeance of 4.1 L m −2 h −1 bar −1 , a molecular weight cut-off as low as 320 Da, along with excellent solvent resistance, operational stability.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 2
·121939
·
IF 7.5
Yu Liu,Jinhai Xu,Shusu Shen,Xiaoji Zhou,Dapeng Liu,Ganwei Zhang
The development of photocatalytic self-cleaning membranes represents a promising strategy for addressing membrane fouling in dye wastewater treatment. NH 2 -MIL-88B(Fe) (NM88B) possesses excellent chemical stability, hydrophilicity and inherent photocatalytic activity, its practical application is limited by the low carrier mobility and the rapid recombination of photogenerated electron-hole pairs. In this experiment, NM88B@TiO 2 was synthesized by in-situ growth method, and was constructed to enhance charge separation and photocatalytic efficiency, and then NM88B@TiO 2 /polyvinylidene fluoride (PVDF) mixed matrix membranes (MMMs) were fabricated using the non-solvent induced phase separation (NIPS) method. The loading capacity of NM88B@TiO 2 could reach up to 2 %. The optimal membrane has a porosity of 86.02 %, which is 63 % higher than that of the original PVDF (52.78 %). The pure water permeability of the optimal membrane is 52.87 L·m −2 ·h −1 ·bar −1 , 2.5 times that of the original membrane. The water contact angle decreased from 85.6° to 40.4°, making the membrane highly hydrophilic. In the anti-BSA fouling experiment, the flux recovery rate (FRR) of the optimal membrane still maintained above 75 % even after 6 cycles, demonstrating excellent antifouling ability and also reusability. Moreover, the membrane showed a good rejection rate for various dyes. Additionally, this membrane exhibited excellent photocatalytic self-cleaning ability. After 7 photocatalytic self-cleaning cycles, the membrane permeability basically returned to its initial state, and the membrane maintained a good CR rejection rate (>90 %). During the continuous 72-hour CR filtration process, the permeability and rejection rate remained unchanged. These results highlight the potential of the NM88B@TiO 2 modified PVDF membrane as a photocatalytic self-cleaning membrane for treating wastewater containing dyes.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2026
·
IF 8.8
Zhi-Qiang Pei,Qiaohong Liu,Shi-Xin Wei,Bo-Hao Chen,Quan-Fu An
To overcome the poor organic solvent resistance of conventional polymer membranes, this study developed a robust thin-film composite (TFC) membrane via reverse interfacial polymerization on a polyethylene (PE) substrate. Using o-tolidine (OT) and 1,3,5-benzenetricarbonyl chloride (TMC) as monomers, a high-permeability and highly crosslinked polyamide (PA) selective layer was successfully constructed. The influence of composition of the co-solvent, OT and TMC concentration on membrane morphology, surface chemistry, and separation performance was systematically investigated. The optimized TFC membrane exhibited excellent DMF permeance (4.03 Lm −2 h −1 bar −1 ) and high rejection (99.5%) of methyl blue, attributed to the formation of a compact yet permeable PA layer and electrostatic repulsion effects. Furthermore, the membrane demonstrated excellent long-term stability under harsh solvent conditions and elevated pressure, showcasing superior chemical and mechanical resilience. This work offers a practical and scalable approach for developing advanced solvent-resistant membranes suitable for dye removal in organic media.
✓ 已验证
产品关联
DOI
高影响因子
Green Chemical Engineering
·
2026
·
IF 11.9
Chuan-Bin Li,Ling-Yu Dong,Yi-Fan Wang,Guang-Ping Hao
Electrosynthesis of hydrogen peroxide (eH 2 O 2 ) offers a facile and environmentally benign synthesis alternative through selective two-electron oxygen reduction reaction (2e – ORR). Carbon-based nonprecious electrocatalysts are promising for 2e – ORR, however, its efficiency is often limited by low intrinsic activity and limited accessibility of catalytic sites. Here, we present a family of carbonyl rich carbon spheres with surface wrinkle structure, which was engineered to boost the activity for 2e – ORR and to enlarge its electrochemical active surface area. As compared to common O-doped carbon spheres, our materials with controlled surface wrinkles delivered a 10-fold enhancement of accessible active surface area. Extensive catalytic tests together with characterizations indicate carbonyl moieties are the predominant active sites for O 2 activation. In 0.1 M KOH electrolyte, the catalyst delivered the H 2 O 2 selectivity of > 97.5% over a large potential range from 0-0.67 V vs . RHE, which resulted in a H 2 O 2 production rate of 385 mmol/(g·h) at 0 V vs. RHE. This study provides a useful surface structure fine modulation method for the development of heteroatom-doped carbon electrocatalysts for selective H 2 O 2 synthesis.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.6
Kaibo Zhang,Chenglong Yang,Zhenggong Wang,Feng Zhang,Jian Jin
Organic solvent nanofiltration (OSN) holds substantial application potential in industries such as chemical engineering, pharmaceuticals, and energy, where the molecular design of membrane materials plays a crucial role in separation performance. In this work, a polyester/amide thin-film composite membrane featuring an amphiphilic network was fabricated via interfacial polymerization, using 2,2-bis(3-amino-4-hydroxyphenyl)hexafluoropropane (bisAPAF) and trimesoyl chloride (TMC) as the aqueous and organic phase monomers, respectively. The incorporation of low-polarity CF 3 groups into the polar polyamide network created amphiphilic nanochannels, enabling simultaneous high permeance for both polar and non-polar organic solvents. Moreover, the pore structure of the polyester/amide selective layer was precisely tailored through the modulation of NaOH additives, ensuring highly accurate molecular discrimination. The optimized membrane exhibited outstanding OSN performance, with methanol and n-hexane permeances reaching 16.6 and 8.5 L m −2 h −1 bar −1 , respectively, while maintaining a molecular weight cut-off of 343 Da. Importantly, it demonstrated remarkable structural integrity and anti-swelling properties during prolonged operation. These findings provide an advanced molecular-level design strategy for constructing highly perm-selective OSN membranes with tailored transport pathways.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Jiahui Li,Zhongrui Chen,Jianhua Zhang,Ziping Song,Hongjin Yan,Haoyu Zhan,Qijia Han,Yunbo Zheng,Xiaojia Zheng,Hao Zhang,Quan Kang,Chunrui Wu
Exploring novel aqueous monomers to construct loose nanofiltration (LNF) membranes with excellent permeability and dye/salt selectivity is still needed for recovering resources in textile wastewater. In this study, a novel strategy for exploiting the differential N-site reactivities in 4-aminobenzoylhydrazine (4ABH) was proposed to precisely modulate the structure of the polyamide (PA) layer, thereby fabricating unique LNF membranes. The nucleophilic reactivities of 4ABH monomer and their effect on the PA layer formation were studied via density functional theory (DFT) and molecular dynamics simulation (MDS), which provided theoretical guidance for understanding the formation mechanism of LNF membranes. Based on the differential nucleophilic reactivities of N-sites in 4ABH (-NH₂ > -NH 2 of -NH-NH₂ > -NH- of -NH-NH₂), the proportion of large cavities within the PA cross-linked networks increased, and then the compact cross-linked structure emerged as the monomer concentration increased. The experimental result demonstrated that the optimized 4ABH/TMC LNF membrane exhibited a high water permeability of 45.03 L·m -2 ·h -1 ·bar -1 , while maintaining excellent rejection for methyl blue (MB) (95.18%), eriochrome black T (EBT) (99.24%) and congo red (CR) (99.64%) with a low salt rejection for Na₂SO₄ (24.37%), MgSO 4 (7.03%), NaCl (6.79%), and MgCl 2 (3.29%). Moreover, the membrane achieved a selectivity factor of 239.00 for CR/NaCl in dye/salt mixture solutions and showed robust stability and fouling resistance in continuous filtration tests. The strategy explored in this work provided a new insight into selecting suitable aqueous monomers for preparing the unique LNF membranes with excellent permeability and dye/salt selectivity.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2026
·
IF 8.8
Turong Shi,Jiachun Feng,Beibei Tang
Efficient separation of dyes from salts in high-salinity dye wastewater remains a critical challenge, limited by the permeability–selectivity trade-off and fouling susceptibility inherent to conventional nanofiltration. Here, an innovative strategy integrating synergistic metal-MOF coordination with in-situ assisted etching is proposed to construct a defect-free, highly permeable MOF-based separation layer via a scalable one-step phase inversion process. By coordinating in-situ grown ZIF-8 in the casting solution with tannic acid (TA) introduced via the coagulation bath, a crosslinked network with a high MOF loading of up to 33 wt% is constructed. Free Zn 2+ presented in the casting solution act as dynamic repairing agents, effectively healing structural defects and enhancing membrane integrity through synergistic coordination. Simultaneously, TA etches ZIF-8 to create a hollow architecture, dramatically lowering transmembrane permeation resistance and enhancing surface hydrophilicity. The resulting membrane achieves exceptional broad-spectrum dye rejection, a remarkably high pure water flux of 127 L m −2 h −1 ·bar −1 , and outstanding dye/salt selectivity (e.g., methyl blue/Na 2 SO 4 selectivity up to 967), along with superior anti-fouling performance and operational stability. This work not only presents a feasible and scalable route to fabricating high-performance nanofiltration membranes through a “coordination-repair-etching” mechanism, but also opens new avenues for sustainable resource recovery from complex saline wastewater.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2026
·
IF 4.4
Zhao Jianghui,Cui Huaqiang,Yang Qinqin,Ye Wuyi,Huang Aofeng,Wu Bo,Liu Zhi
Doping has been widely explored as an effective strategy to enhance the photocatalytic performance of TiO 2 under visible light for degrading organic pollutants. However, conventional dopants derived from chemical reagents raise environmental and human safety concerns. In this study, natural down fiber (DF) was innovatively employed as a sustainable and green source of C and N, combined with copper acetate as the copper source, to fabricate C–N–Cu co-doped TiO 2 (C–N–Cu@TiO 2 ) via a facile one-step hydrothermal method. Comprehensive characterization revealed that, compared to pure TiO 2 , the co-doped C–N–Cu@TiO 2 exhibited a narrowed band gap (from 3.11 to 2.83 eV), reduced photoluminescence intensity, and enhanced photocurrent density, indicating improved visible-light absorption and effective suppression of electron–hole recombination. Under simulated one-sun irradiation, C–N–Cu@TiO 2 demonstrated outstanding photocatalytic activity, achieving a high degradation efficiency of 98.20% for methyl orange within 2 h, which is competitive with many reported doped TiO 2 photocatalysts. Trapping experiments identified O 2 − and h + as the primary active species, and a plausible photocatalytic mechanism was proposed accordingly. This work not only confirms the effectiveness of natural DF as an eco-friendly and sustainable doping source, but also encourages further exploration of biomass-derived functional materials for applications in wastewater treatment, photocatalytic hydrogen evolution, carbon dioxide reduction, and related fields.
✓ 已验证
产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2026
·
IF 2.6
Wen Su,Tao Yao,Fen Ran
ZIF-8 have been extensively studied in water treatment membranes, and they exhibit excellent modification effects in the membranes. In this study, tea polyphenol-coated ZIF-8 nanoparticles are synthesized via one-pot synthesis and then are blended to modify polyethersulfone ultrafiltration membrane. The shape of the nanoparticles is affected by changing the content of tea polyphenol. Different nanoparticles blends polyethersulfone for ultrafiltration membranes. It is found that adding ZIF-8@Tea polyphenol with hydrophilic properties could significantly improve wettability of membrane; when 0.3 g of ZIF-8@Tea polyphenol is added, the film contact angle decreases to 27.3 ° and shows an excellent rejection rate for methylene blue, methyl orange, and Congo red. The addition of ZIF-8 significantly enhances the retention rate of bovine serum albumin by water treatment membranes, which is mainly attributed to its precise size sieving effect. The accumulation or growth of ZIF-8 particles creates more uniform nanoscale channels, ultimately reducing the average and maximum pore diameters. The effective separation layer of membranes make much smaller than the size of bovine serum albumin. The strategy not only enables the ultrafiltration membrane to maintain high water flux under different pressures but also endows it with the ability to resist Escherichia coli microorganisms.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2026
·Vol. 143
·期 15
·e70470
·
IF 3.1
Biqin Chen,Yuxia Li,Jinghao Cao,Shenghui Liu,Ke Fan,Haixin Li
The existing TUF membranes often face challenges such as declining permeation flux and insufficient separation selectivity. This study proposes to improve the above problems by the synergistic effect of Mg–Al layered double hydroxide (LDH) and tannic acid (TA) etched metal–organic frameworks (MOFs): (1) TUF membranes with adjustable interlayer distances and multi-level mass transfer channels were constructed by doping LDH two-dimensional (2D) nanosheets; (2) TAZIF-L (Co) etched by TA was introduced. TA inhibited the swelling of LDH nanosheets through coordination and enhanced the interface binding between ZIF-L (Co) and the substrate, thereby suppressing its shedding. The results showed that TA can etch ZIF-L (Co), and the membrane prepared after etching has better selectivity and stability of dye/salt separation. Taking MTAZIF-0.02 as an example, the pure water flux was 88.23 L m −2 h −1 , which was 1.91 times that of MLDH. The removal rate of congo red (CR) solution was 92.56%. The NaCl rejection in methyl blue (MB)/NaCl solution was 10.88% and in CR/NaCl solution was 10.57%. This study provides an experimental basis for the construction of highly selective ultrafiltration membrane for the treatment of high concentration dye/salt wastewater.
✓ 已验证
产品关联
DOI
高影响因子
ChemNanoMat
·
2026
·Vol. 12
·期 2
·e202500591
·
IF 2.6
Jihao Zuo,Ying Li,Jinting Cai,Zehao Chen,Ting Zheng,Haohui Tan,Meishan Chen,Shanshan Li,Cailong Zhou
The escalating discharge of oily wastewater presents a considerable threat to both ecological systems and human health, making the development of efficient treatment technologies an ongoing challenge. This study constructed binary composite membranes that effectively integrate polymeric and metallic substrates by integrating a polyvinylidene fluoride (PVDF) membrane with an acid-etched copper mesh (CM). The binary composite membranes were subsequently modified with a polydopamine/polyethylenimine (PDA/PEI) complex to produce superhydrophilic and underwater superoleophobic PVDF/mesh binary composite membranes (PP@PVDF/triethyl phosphate (TEP) n -roughened CM (RCM)). By varying the mass ratio of PVDF to the solvent TEP, the phase separation kinetics were systematically regulated, resulting in five distinct membranes with tailored pore sizes and porosity levels. Among these, PP@PVDF/TEP 30 -RCM exhibited outstanding separation performance for various immiscible oil–water mixtures, achieving separation efficiencies exceeding 99.60% and reaching a maximum of 99.97%. When applied to the separation of surfactant-stabilized oil-in-water emulsions under gravity-driven conditions, PP@PVDF/TEP 30 -RCM demonstrated high permeation fluxes, all above 1010 L·m −2 ·h −1 , coupled with separation efficiencies exceeding 99.10%. Furthermore, PP@PVDF/TEP 30 -RCM maintained high separation efficiency over 15 repeated cycles. The PVDF/mesh binary composite membranes developed in this work combine high separation efficiency with robust durability, making them promising candidates for the sustainable separation of challenging oil/water emulsions.
✓ 已验证
产品关联
DOI
高影响因子
Sustainable Materials and Technologies
·
2026
·
IF 9.7
Zongrui Huang,Jinmei He,Ying Zhang,Pu Feng,Zijie Xi,Yuanyuan Wang,Xinyi Tian,Lin Liu,Chao Wang,Mengnan Qu
Currently, the solar interface evaporation technology (SIE) has become an important way to alleviate the shortage of fresh water resources. However, the actual desalination process is complex and faces challenges such as high concentration of salts and organic pollutants. Herein, this study developed a salt deposition resistant solar evaporator (SPBP/PVA) based on the Hofmeister effect for high concentration brine evaporation. By integrating photothermal materials of polypyrrole (PPy) and photocatalyst bismuth vanadate (BiVO 4 ) into the polyurethane sponge modified with appropriate concentration of sodium alginate (1% SA), this system achieves a multifunctional coupling of efficient evaporation, photocatalytic degradation of organic pollutants, and concentration gradient power generation. This evaporator exhibits excellent salt deposition resistance and stable evaporation rate in high-concentration salt solutions (15% NaCl, 2.95 kg m −2 h −1 ). The mechanism is attributed to the enhancement of hydration due to Cl − -induced Hofmeister effect, reduction of evaporation enthalpy, and promotion of salt reflux. During actual outdoor tests in seawater, the evaporator demonstrated highly efficient evaporation performance (with an average evaporation rate of approximately 2.97 kg m −2 h −1 ). At the same time, it can photocatalytically degrade volatile organic contaminants, prevent secondary pollution of fresh water, and realize concentration gradient power generation (voltage of 107.6 mV, current of 14.0 μA) through the salt concentration gradient at the evaporation interface. The multifunctional salt-resistant deposition evaporator prepared in this study provides a new solution for balancing rapid evaporation and the challenges it brings regarding salt deposition.
✓ 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）