JOURNAL OF MEMBRANE SCIENCE
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2026
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IF 8.8
Xueliang Chen,Sen Xiong,Zhenfeng Lin,Chunling Liu,Yong Wang
The fabrication of high-performance hollow-fiber membranes (HFMs) can be effectively achieved through nanomaterial-based surface modification. However, achieving a uniform deposition of nanomaterials onto the curved surface remains a challenge. In this work, we have developed a pressure-driven, liquid-phase continuous deposition method to construct oxidized bacterial cellulose (BC) nanofibers onto HFMs in a layer-by-layer way. By controlling the oxidation time and deposition time, the Immunoglobulin G (IgG) rejection rate increases progressively from 50% to 90.1%, while the water permeance correspondingly decreases from approximately 1500 L m −2 h −1 ·bar −1 to 438.2 L m −2 h −1 ·bar −1 . The introduction of polyethylenimine (PEI) as a property regulator not only strengthens the crosslinking reaction but also further tunes the membrane properties. The oxidized BC membranes achieve a flux recovery ratio (FRR) of 64% in the cyclic filtration tests, which is 4 times that of the pristine substrates. The water permeance of the oxidized BC membranes can still be maintained above 80% of its initial value in the long-term filtration test. Moreover, the consumption of oxidized BC is as low as 1.77 g m −2 for modifying HFMs, which further enhances the process sustainability of HFMs fabrication.
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SEPARATION SCIENCE AND TECHNOLOGY
·
2026
·
IF 2.5
Jialong Yuan,Xu Zhang,Congcong Zhao,Fengjiao Bai,Hao Yan,Jin Li,Zhenyu Zuo
A novel molecularly imprinted polymer(Esc-SMIPs) with specific selectivity for esculetin (Esc), was synthesized in this work. Dehydroabietic acid [2-(acryloyloxy) ethyl] ester (DAAEE) and 4-vinylpyridine (4-VP) were utilized as bifunctional monomers, and porous cellulose microspheres derived from traditional Chinese medicine residue were employed as the carrier. The polymer was characterized by FT-IR, SEM, BET, TEM, and TGA. Experimental results demonstrated that the Esc – SMIPs prepared by these bifunctional monomers exhibit higher adsorption capacity (37.12 mg/g) and a superior imprinting factor (2.55) compared with the SMIPs derived from other monomers (PS, AA, 4 - VP, AM and DAAEE). In addition, Esc – SMIPs were applied as the solid – phase extraction filler for the selective identification and separation of Esc from Cortex fraxini extract. The concentration of Esc in the eluent (70% ethanol) was found to be significantly higher than that in the Cortex fraxini extract. The recovery rates of spiked samples for Esc were in the range of 98.06% − 101.93%, with relative standard deviation (RSD) values below 1.86%. When compared with macroporous adsorption resin D101 or Esc – SNIPs, excellent targeted enrichment and high separation efficiency for Esc are possessed by Esc – SMIPs.
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Journal of Environmental Chemical Engineering
·
2026
·
IF 7.5
Qi Zeng,Chu-Ya Wang,Guangcan Zhu
Perfluorooctanoic acid (PFOA) and tetracycline hydrochloride (TTCH) are typical emerging pollutants with distinct molecular structures. TTCH contains C–H bonds in its molecule, but PFOA does not contain C-H bonds. The absence of C–H bonds makes PFOA insensitive to free radicals such as •OH. This structural difference poses a significant challenge for the efficient degradation of both pollutants. In this study, BiOBr nanosheets with adjustable concentrations of oxygen vacancies (OVs) were synthesized through a facile hydrothermal process.The photocatalytic efficiencies of MP2-BiOBr for PFOA and TTCH degradation were 3.93 and 3.89 times those of BiOBr. Electrochemical results indicated that the improvement in charge separation efficiency was the primary factor enhancing the photocatalytic performance of catalysts after the introduction of OVs. Additionally, the photocatalytic degradation of TTCH mainly involved active species •O 2 − , while PFOA was degraded through a direct oxidation process by photogenerated h + . Two possible decomposition pathways of PFOA over MP2-BiOBr are illustrated. Furthermore, The structure-performance relationship between OV-modified BiOBr and improved photocatalytic performance was established. This study presents a facile method for introducing OVs into BiOBr and provides some new insights into the mechanisms of pollutant degradation. It offers a promising strategy for the efficient treatment of complex wastewater containing diverse contaminants.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Xinxin Zhu,Liting Wang,Joe R. Zhao,Shoujuan Wang,Magdi E. Gibril,Fangong Kong
The rising contamination of water resources by levofloxacin (LEV) requires advanced remediation strategies that exceed the capabilities of the conventional methods. This study reports the rational design of a novel, multi-functional cellulose-phytic acid/Fe-MoS 2 (cellulose-PA/Fe-MoS 2 ) hybrid composite for the highly efficient removal of LEV via synergistic adsorption and photocatalysis. Cellulose served as sustainable substrate and phytic acid acted as a natural cross-linker to enhance the integration and distribution of Fe-MoS 2 onto cellulose substrate. This designed architecture results in enhanced hydrophilicity, minimized MoS 2 aggregation, and a maximized density of active sites, as confirmed by comprehensive characterization (SEM, XRD, FTIR, XPS, BET, LC-MS, EPR). The prepared composite demonstrated exceptional, temperature-dependent LEV adsorption capacities of up to 210.97 mg/g (95%) within 40 min, with kinetics and isotherms best described by pseudo-second-order and Langmuir models, indicative of chemisorption. The adsorption mechanism driven by a combination of electrostatic attraction, π–π stacking, hydrogen bonding, and coordination complexation, resulting in effective removal across a broad pH range (3−10). The cellulose-PA/Fe-MoS 2 exhibited photocatalytic effect, achieving efficient degradation of levofloxacin (LEV) (98.5%) within short time (15 mins) into small molecules (CO 2 , H 2 O, NH 3 , NO 3 , F, …etc.) as confirmed with LC-MS, driven primarily by reactive species (•O 2 − , •OH, h + ). In addition, it was demonstrated good recyclability, maintaining high performance over five consecutive cycles. These findings suggest that the designed cellulose-PA/Fe-MoS 2 composite could be used as a green and sustainable multifunctional material to simultaneously remove and degrade antibiotics from water environments.
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Gels
·
2026
·Vol. 12
·期 3
·221
·
IF 6.4
Huixiang Wang,Kaiquan Zhang,Ya Lu
Flexible supercapacitors have attracted significant attention as promising power sources for portable and wearable electronic devices. However, achieving simultaneous high power density, energy density and long-term cyclic stability in a simple device configuration remains a critical challenge. Herein, we report an all-solid-state flexible planar supercapacitor based on hierarchically structured cellulose nanofiber-carbon nanotube@manganese dioxide (CNF-CNT@MnO2) composite aerogels. The electrode architecture is rationally designed by first dispersing CNTs within a hydrophilic CNF scaffold to form a conductive three-dimensional network, followed by in situ oxidative polymerization of MnO2onto the CNF-CNT fibrous skeleton. The hydrophilic CNFs network ensures thorough electrolyte penetration, the interconnected CNTs facilitate rapid electron transport, and the uniformly coated MnO2layer provides substantial pseudocapacitance. The aerogel electrode with a low density of 14.6 mg cm−3and a high specific surface area of 214.4 m2g−1delivers a specific capacitance of 273.0 F g−1at 0.4 A g−1. The assembled planar supercapacitor, incorporating gel electrolyte and a flexible hydrogel substrate, achieves an impressive areal capacitance of 885.0 mF cm−2at 2 mA cm−2, energy density of 122.9 μWh cm−2and corresponding power density of 1000.0 μW cm−2. The device exhibits excellent electrochemical stability, retaining 83.3% capacitance after 2500 charge–discharge cycles, and outstanding mechanical flexibility, with 96.3% capacitance retention after 200 repeated bending cycles. Furthermore, multiple devices can be connected in series or parallel to proportionally increase output voltage or current, meeting the practical power requirements of electronic applications. This work offers a viable pathway toward high-performance, durable energy storage solutions for next-generation wearable electronics.
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ADVANCED SYNTHESIS & CATALYSIS
·
2026
·Vol. 368
·期 5
·e70307
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IF 3.7
Wei Rao,Yifan Jiang,Qiong Liu,Junjun Zhang,Die He,Rong Chen
While high-valent copper intermediates are pivotal for efficient peroxydisulfate (PDS) activation, their generation and role in heterogeneous catalysis remain unclear. Herein, we demonstrate that a nonstoichiometric Cu 0.84 Bi 2.08 O 4 catalyst enables the dark activation of PDS via a novel pathway dominated by a surface-bound Cu(III)-peroxo intermediate ( ≡ Cu(III)-O−O−SO 3 ). A suite of spectroscopic and chemical probes revealed that this Cu(III)-peroxo species, along with superoxide radicals (•O 2 − ), acts as the primary oxidant, enabling the highly selective and rapid degradation of bisphenol A (BPA) and other phenolic pollutants. Furthermore, H 2 O 2 generated from PDS hydrolysis synergistically participates in the reaction, accounting for the exceptionally high PDS utilization efficiency of the system. The system exhibits remarkable robustness, maintaining high activity over a wide pH range (4–11) and demonstrating strong resistance to interference from ions. This study elucidates a distinct Cu(III)-peroxo-mediated mechanism and offers a new strategy for designing highly selective catalysts for environmental remediation.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.6
Yang Yang,Jiaxin Li,Xiaoyao Guo,Fangye Wu,Jiayu Zhang,Peng Lu
The reliance of conventional carbon dioxide (CO₂) sensors on external power limits their application scope. Self-powered triboelectric nanogenerators offer a promising alternative, yet the development of high-performance triboelectric sensing materials remains a key challenge. This study presents an ingenious design using microgels from polyethyleneimine (PEI)-crosslinked nanocellulose as dual-functional building blocks to fabricate a mechanically robust and CO 2 -sensitive triboelectric foam. The microgels (optimized with 25,000 Da PEI) formed an optimal pore-forming template, facilitating the efficient and uniform distribution of PEI. The resulting cellulose foam achieves an excellent combination of high porosity (85.6%), low density and compressive toughness (1.37 MJ m −3 ), while functioning dually as the triboelectric layer and the CO 2 sensing material. The optimized TENG-based sensor enables sensitive CO₂ responsiveness, exhibiting a good linear relationship (R 2 = 0.99) within 750–2500 ppm, and maintaining robust signal output. This study provides a novel strategy for developing CO 2 -sensitive materials and significantly advances the application of triboelectric CO₂ sensors in air quality monitoring.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.6
Shibing Ren,Xinge Ma,Liang Chu,Rui Wang,Min Li,Mu Yang,Ge Wang
The dynamic ionic bonds effectively address the leakage issue of phase change materials through the reversible breaking and reformation of chemical bonds, offering an efficient and green preparation method. In this study, we successfully fabricated MXene-CNFs-PEG composite PCMs using an ultrasonic-assisted and ion-crosslinking method. This strategy leverages the strong intermolecular hydrogen bonding between one-dimensional cellulose nanofibers (CNFs) and two-dimensional Ti 3 C 2 T x (MXene) nanosheets, combined with metal ion crosslinking, to form a continuous three-dimensional network that effectively anchors organic phase change materials. It significantly reduces MXene agglomeration, delays oxidation and enhances the overall structural integrity. The non-rigid network structure imparts outstanding plasticity in the solid state, making the composite an ideal precursor for 3D printing and enabling the precise construction of complex architectures. MXene confers superior photothermal conversion efficiency, enabling integrated conversion of “photo-thermal-electric” energy conversion, successfully driving common electronic device. The composite PCMs have significant application value in fields such as 3D printing and multilevel energy conversion system.
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JOURNAL OF HAZARDOUS MATERIALS
·
2022
·
IF 14.224
Wanfeng Wu,Yanan Qin,Yan Fang,Yukun Zhang,Shuxuan Shao,Fanxing Meng,Minwei Zhang
Currently, graphene quantum dots (GQDs) are widely used as antibacterial agents, and their effects are dependent on the reactive oxygen species (ROS) generated by photodynamic and peroxidase activities. Nevertheless, the supply of substrates or light greatly limits GQDs application. Besides, due to compensatory mechanisms in bacteria, comprehensive analysis of the molecular mechanism underlying the effects of GQDs based on cellular-level experiments is insufficient. Therefore, N-GQDs with inherent excellent, broad-spectrum antibacterial efficacy under acidic conditions were successfully synthesized. Then, via multi-omics analyses, the antibacterial mechanisms of the N-GQDs were found to not only involve generation ROS but also be associated with changes in osmotic pressure , interference with nucleic acid synthesis and inhibition of energy metabolism. More surprisingly, the N-GQDs could destroy intracellular acid-base homeostasis , causing bacterial cell death. In conclusion, this study provides important insights into the antibacterial mechanism of GQDs, offering a basis for the engineering design of antibacterial nanomaterials .
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Journal of Environmental Chemical Engineering
·
2023
·
IF 7.7
Huiyu Duan,Mengxue Wang,Ziwei Zhang,Jianzheng Zhen,Weiyang Lv
Solar-driven interface evaporation is an effective method to produce fresh water to alleviate the shortage of water resources. However, there are still challenges in preparing photothermal conversion materials with high evaporation rate , high photothermal conversion efficiency and low cost. Herein, a 3D carbon aerogel with excellent photothermal conversion performance was prepared by using environmental-friendly biomass materials as the matrix. The hydrophilic 3D photothermal carbon aerogel with low thermal conductivity was prepared by depositing polydopamine and loading Cu nanoparticles (CuNPs) on the surface of bacterial cellulose nanofibers. The deposition of PDA improved the mechanical properties and hydrophilicity of carbon aerogel, and the introduction of CuNPs further enhanced the photothermal conversion performance of carbon aerogel. Interestingly, the side temperature of 3D carbon aerogel was lower than the ambient temperature in the evaporation process, which could absorb energy from the environment and significantly improve the photothermal conversion efficiency, giving rise to the impressive water evaporation rate (2.07 kg·m −2 ·h −1 ) and photothermal conversion efficiency (115.36%) of 3D carbon aerogel under 1 sun. Moreover, the prepared 3D carbon aerogel had excellent purification effect on seawater, strong acid/alkali and dye solution, demonstrating its broad application prospect in the field of solar-driven seawater desalination.
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CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Yunning Chen,Renquan Guan,Xueying Cheng,Jie Zhao,Zhengkai Wu,Yan Wang,Qingkun Shang,Yingnan Sun
In this paper, two surface oxygen vacancy-rich TiO 2 composite photocatalysts were successfully constructed by solid thermal reduction ((R-Vo)TiO 2 ) and bimetallic doping (Nd-Fe-(D-Vo)TiO 2 ). The oxygen vacancies were characterized in detail using XPS, Raman, EPR and STEM. The results show that the excellent photocatalytic performance of Nd-Fe-(D-Vo)TiO 2 deriving from its doping energy and surface oxygen vacancies. Nd-Fe-(D-Vo)TiO 2 could degrade 58 % of phenol within 120 min, which was much greater than 15 % of TiO 2 and 27 % of (R-Vo)TiO 2 . Three composite photocatalysts, TiO 2 @EA, (R-Vo)TiO 2 @EA and Nd-Fe-(D-Vo) TiO 2 @EA, with better visible light absorption and photocatalytic performance were further obtained by bonding ellagic acid (EA) to the surface of TiO 2 . Nd-Fe-(D-Vo)TiO 2 @EA could almost completely degrade ethinyl estradiol within 20 min with a high minimization degree of 84 %. The possible sites of ethinyl estradiol attacked by free radicals were predicted by theoretical calculation combining with high-resolution mass spectrometry analysis, and the possible degradation mechanism was proposed.
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Bioactive Materials
·
2022
·
IF 16.874
Tianshu Chu,Qingye Li,Chun Dai,Xiang Li,Xiang Kong,Yangming Fan,Hongyan Yin,Jianjun Ge
Vein grafts are widely used for coronary artery bypass grafting and hemodialysis access, but restenosis remains the "Achilles' heel" of these treatments. An extravascular stent is one wrapped around the vein graft and provides mechanical strength; it can buffer high arterial pressure and secondary vascular dilation of the vein to prevent restenosis. In this study, we developed a novel Nanocellulose-gelatin hydrogel, loaded with the drug Astragaloside IV (AS-IV) as an extravascular scaffold to investigate its ability to reduce restenosis. We found that the excellent physical and chemical properties of the drug AS-IV loaded Nanocellulose-gelatin hydrogel external stent limit graft vein expansion and make the stent biocompatible. We also found it can prevent restenosis by resisting endothelial-to-mesenchymal transition (EndMT) in vitro . It does so by activating autophagy, and AS-IV can enhance this effect both in vivo and in vitro . This study has added to existing research on the mechanism of extravascular stents in preventing restenosis of grafted veins. Furthermore, we have developed a novel extravascular stent for the prevention and treatment of restenosis. This will help optimize the clinical treatment plan of external stents and improve the prognosis in patients with vein grafts.
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