Acta Biomaterialia
·
2026
·
IF 10.4
Yu Liu,Ziwen Xiao,Yu Zhang,Qian Chen,Siyu Luo,Yaoqing Wang,Zhaohua Miao,Zhenchao Tao,Deyan Gong
Acute liver failure (ALF) can result from the progressive development of acute liver injury triggered by acetaminophen (APAP) overdose. The core mechanisms involve an imbalance in the antioxidant system and upregulation of the inflammatory response, which collectively induce ferroptosis/apoptosis. Herein, nanozymes (PPy-Mg NPs) were synthesized through coordination reaction between polypyrrole nanoparticles (PPy NPs) and magnesium ions. The enriched PPy-Mg NPs were explored as active anti-inflammatory nanozymes for effective acute liver injury treatment. Enriched cationic PPy-Mg NPs in the liver effectively scavenged excess reactive oxygen and nitrogen species (RONS) and cell-free DNA. It is worth emphasizing that in the delayed AILI mouse models, bioactive PPy-Mg NPs not only reduced oxidative stress levels but also modulated multiple biological signaling pathways, such as NF-κB, Nrf2-Keap1, ferroptosis/apoptosis. The research indicates the possible medical application of PPy-Mg NPs nanozymes in efficient enrichment treatment for acute liver injury. Statement of Significance APAP-induced liver injury (AILI) can progress to acute liver failure (ALF), presenting a significant clinical challenge. Currently, N-acetylcysteine (NAC) is the only medication approved treatment; however, its efficacy in patients with advanced AILI remains unsatisfactory. Therefore, the development of new therapeutics for the treatment of AILI are crucial. This work developed a PPy-Mg NPs nanozyme for the efficient AILI treatment. PPy-Mg NPs provide constructive applications of polypyrrole-based nanozymes for AILI treatment, which covers upstream metabolic rescue (RONS scavenging), necrotic debris clearance (cfDNA removal), and residual cell protection (ferroptosis inhibition) across temporal and spatial dimensions, holds potential for extending therapeutic windows and enhancing protection rates in high-risk/complex cases.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2026
·
IF 9.6
Yin He,Yanyan Bie,Xiaoying Zheng,Xinyue He,Cheng Guo,Hao Liu
Fiber-based organic electrochemical transistors (F-OECTs) have recently become important wearable devices for physiological monitoring. However, F-OECTs are limited by low electrical performance. In this study, a semiconductor yarn electrode was used to fabricate a high-performance F-OECT. Specifically, MWCNTs/PPy composite flexible electrodes were developed on a cotton yarn substrate and integrated with PEDOT:PSS as an organic semiconductor material. This approach improved the electrical conductivity and mechanical flexibility of the F-OECT, ensured multi-angle bending stability, and enhanced wearable comfort. At the same time, by constructing an MWCNT/PPy/PEDOT conductive synergistic network, the transconductance value (24.12 mS) and switching ratio (68.82) of F-OECT were significantly enhanced with excellent stability. The performance was up to 8 times better than that of existing fiber-based devices. After the gate modification, modern knitting technology wove cotton yarn and sensing yarn into smart electronic textiles for rapid, real-time glucose monitoring in human urine, and this approach showed great potential for non-invasive biomonitoring applications.
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CELLULOSE
·
2026
·
IF 4.6
Cui Wang,Li Caixia,Zhang Shengyu,Li Mingyu,Huang Dongwei,Fan Jie
Solar steam generation (SSG), as a prominent solution among various seawater desalination technologies, provides an effective way to mitigate the global water resource scarcity issue. However, its large-scale implementation is impeded by intricate preparation techniques and suboptimal efficiency. Furthermore, it also encounters substantial challenges pertaining to salt resistance and durability. In this study, we developed the multi-layered tree-shaped biomimetic loop/plush flax fabrics with variable loop/plush height inspired by the transpiration and evaporation process of natural plants. The flax fabric is constructed by loop layer (LL)/plush layer (PL), plain weave layer (PWL), basket weave layer (BWL), and float layer (FL). The unique LL on the fabric surface was manufactured by employing the double warp beam weaving technology to enlarge the evaporation area. And the evaporation area of the fabric can be further enlarged by cutting the loops and loosening the twist of the yarns. Besides, the evaporation performance of the flax fabric was further enhanced by in-situ polymerization of the photothermal material (polydopamine-polypyrrole (PDA-PPy)) on the surface of the fabric. The hierarchical biomimetic structure of the loop/plush flax fabrics provides the continuous water transfer pathway and effectively controlled the water supply to the photothermal conversion interface. Among which, the loop flax fabric with higher loop height (HLTBFF-PDA-PPy) exhibited a evaporation rate of 1.51 kg m −2 h −1 with the evaporation efficiency up to 97.2% under one sun irradiation. This biomimetic structured fabric SSG exhibited a biomimetic-derived structure, enhanced evaporation performance, reliable salt-rejecting capability, and satisfactory long-term durability. This design offers potential support for advancing the large-scale application of water purification and seawater desalination technologies, providing a potential approach to addressing global water scarcity challenges and maintaining promising prospects in the field of SSG technology.
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MICROCHIMICA ACTA
·
2026
·Vol. 193
·期 4
·233
·
IF 5.4
Gao Xiang,Hou Yujiao,Lin Fang,Wen Limei,Guo Yali,Kong Weijun,Hu Junping,Yang Jianhua
An electrochemical (EC) molecularly imprinted polymer (MIP) sensor for therapeutic drug monitoring of olanzapine (OLZ) has been developed. A “rime-like” gold-platinum nanostructured film (Au-Pt NF) was fabricated on a screen-printed carbon electrode (SPCE) via an one-step hydrogen bubble dynamic template (HBDT) method, followed by electropolymerization of a polyaniline-based MIP. The Au-Pt NF/SPCE served as an ideal three-dimensional conductive substrate with a large active area and enhanced electron-transfer capability, endowing the specific MIP sensor with high sensitivity. Using [Fe(CN) 6 ] 3−/4− as a redox probe, the sensor quantified OLZ by the decrease in differential pulse voltammetry current caused by target binding. It exhibited two linear ranges (0.005–0.4 µM and 0.4–10 µM) with a detection limit of 0.94 nM, and demonstrated high selectivity, reproducibility, and stability. The sensor achieved recoveries of 96.7–102.7% for OLZ in tablets, urine, and whole blood. This work provides a reliable, all-EC sensing platform with strong potential for rapid OLZ monitoring in clinical settings.
Section
Graphical
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JOURNAL OF MEMBRANE SCIENCE
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2026
·
IF 8.8
Shihang Wei,Haoyu Jiang,Feiyun Sun,Wenyi Dong,Hongjie Wang,Ding Yu Xing
Membrane distillation (MD) has high ammonia removal rate when treating the landfill leachate, but fouling by organics and salts limits its performance. In addition, the pH and temperature adjustments required by MD can affect subsequent treatment. In this study, the cation exchange membrane Selemion-CMV (CMV membrane) has been modified with polypyrrole (Ppy) and Nafion, respectively, to achieve monovalent cation selectivity. They were then used in the diffusion dialysis (DD)-MD process to continuously remove ammonia from landfill leachate without changing the water quality, protecting MD process from the influence of organics, Ca 2+ and Mg 2+ . With characterizations and performance testing of the two modified membranes under different conditions, it was found that the Ppy membrane achieved monovalent cation selectivity through electrostatic repulsion and pore size sieving effects, while the Nafion membrane relied on hydration energy differences and a “dissociation–reassociation” mechanism for NH 4 + transport. When applied to actual landfill leachate treatment, Ppy membrane exhibited a relatively low NH 4 + flux of 1.55 mol m −2 h −1 but demonstrated excellent selectivity with P NH 4+ /K , P NH4+/Ca , and P NH4+/Mg of 2.8, 11.27, and 14.21, respectively. In contrast, Nafion membrane exhibited a higher flux of 2.34 mol m −2 h −1 , but slightly lower selectivity, with P NH4+/K , P NH4+/Ca , and P NH4+/Mg of 6.21, 9.17, and 11.21. The DD-MD process achieved continuous ammonia recovery and successfully shielded the MD membrane from fouling, which provides a promising strategy to use membrane technology for efficient resource recovery from complex landfill leachate treatment.
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International Journal of Polymeric Materials and Polymeric Biomaterials
·
2026
·
IF 3.2
Liang Zhao,Xiaopei Wu,Peijun Xiong,Hanping He,Zinuo Xia,Yang Zhou,Kebi Li,Jiaxin Li,Tao Liu,Hongwei Shi,Peihu Xu,Haixing Xu
Peripheral nerve injury (PNI) remains a major clinical challenge because of the limited regenerative capacity of nerve tissue and the formation of an unfavorable inflammatory and fibrotic microenvironment after injury. In this study, a multifunctional conductive hydrogel-composite nerve conduit was developed by integrating an electrospun silk fibroin/polycaprolactone (SF/PCL) hollow conduit loaded with ursolic acid (UA) and an injectable SF/hyaluronic acid (HA) conductive hydrogel containing polydopamine-modified polypyrrole (PDA–PPY) nanoparticles. The electrospun conduit provided structural support, balanced wettability, sustained UA release, and relatively slow degradation, while the conductive hydrogel created a hydrated three-dimensional microenvironment with tunable porosity, swelling behavior, and mechanical properties. PDA modification reduced the aggregation of PPY nanoparticles, improved their dispersion stability and interfacial compatibility within the hydrogel matrix, and promoted the formation of a more homogeneous conductive network, thereby significantly enhancing hydrogel conductivity. In vitro studies demonstrated good cytocompatibility toward Schwann cells, inhibition of fibroblast proliferation and collagen-related secretion, regulation of macrophage polarization under inflammatory conditions, and enhanced cellular activity under appropriate electrical stimulation. These findings indicate that the developed conductive hydrogel-composite conduit integrates structural support, electrical conductivity, and biological activity, providing a promising multifunctional platform for further investigation in peripheral nerve repair.
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MOLECULES
·
2026
·Vol. 31
·期 16
·2878
·
IF 5.1
Bochen Jiang,Xiaojing Sui,Ziran Niu,Yanhua Lei,Jie Wang,Liu Hui,Bing Zhang,Jiangdong Cao,Yu Gu,Zhongzhou Cui
Solar-driven advanced oxidation processes and interfacial water evaporation represent promising strategies to simultaneously address water pollution and freshwater scarcity. However, conventional photo-Fenton catalysts are predominantly powder-based and suffer from difficult catalyst recovery, inefficient H2O2utilization, and limited practical applicability. Herein, a multifunctional bacterial-cellulose-based composite membrane (BC-MTP) was designed by immobilizing 1T-2H MoS2and a tea-polyphenol/polypyrrole (TP/PPy) copolymer through a blending–copolymerization strategy. The three-dimensional BC network anchors the catalytic components and supports their repeated use, while the BC-MTP membrane achieves 88.2% tetracycline removal using 20 μL H2O2, four times lower than the dosage used for the corresponding powder catalyst. Because dissolved Fe was not quantified by ICP-OES or ICP-MS, the present results are interpreted as evidence of improved H2O2utilization and component immobilization rather than quantitative proof of suppressed iron leaching. The incorporation of 1T-2H MoS2and TP/PPy also provides strong broadband light absorption and photothermal conversion, yielding a solar-driven evaporation rate of 1.34 kg m−2h−1and an energy efficiency of 80.1% under the tested laboratory conditions. This work demonstrates a membrane platform integrating photo-Fenton degradation and solar-driven water evaporation for water-purification applications.
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ACS Applied Polymer Materials
·
2026
·
IF 5.2
Zhang Yongfeng,Dong Ting,Xie Kaifang,Lin Jia-Horng,Han Guangting,Chen Que,Chi Shan,Lou Ching-Wen
Photothermal aerogel fibers offer promise for intelligent
thermal management in extreme cold environments, yet their scalable
production is hindered by slow gelation kinetics, poor mechanical
strength, and limited dyeability. Herein, we report an in situ photo-cross-linking
strategy for the fast gelling fabrication of dyeable photothermal
aerogel fibers, using thermoplastic polyurethane (TPU) as the sheath
and methacrylated chitosan (CSMA) aerogel as the core. The photosensitive
CSMA core cross-links within 15 s under UV irradiation, enabling fast
sol–gel transition in a deionized-water coagulation bath within
1 min. The trade-off between dyeability and photothermal performance
is addressed by incorporating cesium tungsten bronze (CWO) nanoparticles
into the TPU sheath layer or in situ polymerizing polypyrrole (PPy)
in the CSMA core layer, whereby light-blue TPU/CWO@CSMA fibers and
near-white TPU@CSMA-PPy fibers were developed. Both fibers exhibit
excellent mechanical properties (tensile strength 3.1–3.3 MPa,
elongation >1600%) and low thermal conductivity (0.047 ± 0.0004
W·m –1 ·K –1 ), achieving
a good synergistic optimization of passive thermal insulation and
active photothermal heating performance. They also display good dyeability
for multicolored fabrication while maintaining strong photothermal
performance. TPU/CWO@CSMA fibers heat to 66.7 ° C under 1-sun
illumination and reach 19.2 ° C at −20 ° C via CWO’s
LSPR effect. TPU@CSMA-PPy fibers show mild, controllable warming (≈16
° C at −7 ° C; 20 ° C at 0 ° C) with slower
cooling. Outdoor tests confirm fabric temperatures remain in a mild
25–34 ° C range without overheating. This work overcomes
the long-standing technical bottleneck of conventional photothermal
aerogel fibers that are typically restricted to single, undyeable
colors, demonstrating promising potential for personal thermal management
and related applications.
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ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Shumin Lin,Shuang Luo,Huiying Yan,Zhouqishuo Cai,Yanan Zhao,Jinmeng Zhang,Hua Bai
Flexible planar supercapacitors have garnered significant attention as potential power supplies for wearable and portable devices. In this work, we present a flexible planar supercapacitor utilizing delignified natural wood as the substrate and polypyrrole as the electrode material. The interdigitated polypyrrole electrodes are fabricated on the substrate via vapor deposition polymerization, with the polypyrrole thoroughly embedded within the wood substrate’s channels across its thickness. This design significantly enhances the areal-specific capacitance and stability of the device. The electrodes achieve an impressive areal-specific capacitance of 1903.0 mF cm–2, while the planar-integrated supercapacitor constructed with these electrodes exhibits an areal-specific capacitance of 172.0 mF cm–2. Benefiting from the excellent flexibility of delignified wood, three-dimensional distribution, and strong binding to the substrate of polypyrrole, the planar supercapacitor demonstrates outstanding flexibility and mechanical stability. This study demonstrates an innovative approach to utilizing porous insulating substrates for fabricating planar supercapacitors and highlights possibilities for incorporating eco-friendly wood into energy storage applications.
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DYES AND PIGMENTS
·
2025
·
IF 4.2
Yinchun Fang,Xianglu Zhao,Xuchen Tao
High refractive index metal oxides can produce structural colors through Mie scattering, which have been studied for use in eco-friendly textiles coloring. However, the inherently low structural order of Mie scattering structural colors hinders the formation of brilliant color on white substrates, limiting the application fields. In this research, Cu 2 O@PPy core-shell microspheres with varying particle sizes (382, 414, 452, 500 and 563 nm) were synthesized, which were used to construct the structural color coatings with blue, green, yellowish green, yellow and bright yellow on poly(acrylate) (PA) adhesive-pretreated white polyester fabric via spray-coating. Cu 2 O@PPy microsphere structural color coating on the fabrics obtained superhydrophobicity with the water contact angles (WCA) greater than 150° by spraying polydimethylsiloxane (PDMS), thus endowing them with self-cleaning function. The PDMS treatment would not have a significant impact on the color of structural color coating on fabrics. The introduction of PA adhesive imparted excellent fastness to the structural color coating on fabrics with only minimal impact on physical properties. This research presents a novel method for fabricating functional structural color coatings on white fabrics using black polymer-coated core-shell microspheres.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Shen Du,Bing-Lin Bai,Ya-Ling He,Mingyun Dai,Jia-Cheng Wan
Reverse-structured solar evaporators are lauded for high water collection efficiency but the clean water yield is constrained by the two-dimensional evaporation in single-stage design. To address this limitation, the evaporation process was expanded into three-dimensional space by incorporating transparent hydrogels as a layer for solar energy transmission and evaporation enhancement. Thermal management in these evaporators was meticulously designed to localize heat at the evaporation region, thereby minimizing convective and radiative energy losses. Through this approach, a water collection rate of 1.73 kg·m −2 ·h −1 and a collection efficiency of 76.8 % were attained under one sun illumination, which are among the highest values reported for single-stage solar evaporators. Outdoor testing confirmed the design's efficacy, achieving a water collection rate exceeding 1.2 kg·m −2 ·h −1 during a long time period, thus validating its practical application in real-world environments.
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JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2025
·
IF 4.1
Feitao Fan,Yiting Che,Vadim Efimov,Kuzmin Anton,Shitan Yan,Ting Bian
Developing efficient and durable platinum-based catalysts for the oxygen reduction reaction (ORR) is a major challenge. In this work two Platinum-Zinc Hofmann-type Metal-Organic Frameworks are synthesized by ligand regulation, one with 4,4′-dipyridyl disulfide introducing sulfur and the other with 4,4′-azopyridine as a sulfur-free analogue. After pyrolysis, the sulfur-containing precursor yields small Pt nanoparticles embedded in a sulfur and nitrogen co-doped carbon matrix (Pt/SNC), while the sulfur-free precursor forms intermetallic L1₀-PtZn on nitrogen-doped carbon (L1 0 -PtZn/NC). Zn evaporation and S/N co-doping in Pt/SNC optimize Pt dispersion, tune electronic structures, and strengthen Pt–carbon interactions, whereas the absence of sulfur stabilizes the L1₀-PtZn phase. Pt/SNC shows much smaller particle sizes (~4.98 nm) than L1 0 -PtZn/NC (~10.61 nm) and exhibits the best ORR performance with a half-wave potential of 0.88 V, surpassing Pt/C (0.86 V) and L1 0 -PtZn/NC (0.79 V). Its specific and mass activities are 1.6/1.8 times higher than Pt/C and 2.85/6.4 times higher than L1 0 -PtZn/NC. Durability tests confirm that Pt/SNC retains 78 % of its mass activity after 60,000 cycles. These results demonstrate the effectiveness of ligand regulation and S/N co-doping in designing high-performance Pt-based electrocatalysts.
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