INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Deyang Li,Xue Tian,Mengyao He,Chunyu Ding,Dongming Qi,Yangyi Sun
M ultifunctional m icro f iber s ynthetic l eather (MMFL) with antibacterial activity, air permeability, moisture transmission, UV resistance, and mechanical robustness, is highly needed by advanced applications. However, achieving these integrated functionalities often requires complex designs and high filler loadings, leading to aggregation and compromised mechanical performance. Here, we propose a low-filler-content strategy using only 2–5 wt% of silver-decorated l ignin- h ybrid h ollow s ilica sphere s (Ag@LHHSs) in a w aterborne p olyurethane (WPU) to fabricate MMFL with integrated functionalities. The superior performance stems from the synergistic structure-function design of Ag@LHHSs: 1) uniformly distributed Ag n ano p articles (NPs) generate ·OH radicals, providing strong antibacterial efficacy, while simultaneously coordinating with WPU carbonyl/amine groups to enhance interfacial adhesion without compromising mechanical integrity; 2) lignin shell, rich in hydroxyl and sulfonic groups, contributes to UV protection and forms hydrogen bonds with WPU, further improving compatibility; 3) the hollow architecture creates free volume, enhancing breathability and moisture permeability. With only 2–5 wt% Ag@LHHSs, our MMFL achieves antibacterial efficiency of exceeding 99 %, air permeability of 283.4 mm/s (26.0 % higher than neat WPU), and 2 ·24 h water vapor transmission of 7120 g/m 2 (171.1 % improvement), meanwhile maintaining UV resistance and mechanical robustness. This work provides a promising strategy for developing lightweight, low-cost, multifunctional synthetic microfiber leathers via rational nanofiller design and interfacial engineering.
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RSC Advances
·
2019
·Vol. 9
·期 71
·41591-41602
·
IF 3.049
Yu Qiao,Qian Han,Dong Li,Hongji Li,Bing Wei,Guangbo Che,Wei Jiang,Weisheng Guan
A novel Ag/metal–organic framework/graphitic carbon nitride (Ag/HKUST-1/g-C3N4, AHC) photocatalyst was prepared via an in situ growth strategy and photo-deposition technique for environmental remediation. The as-obtained samples were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), N2 adsorption–desorption isotherm measurement, UV-vis diffuse reflection spectroscopy (UV-vis DRS), and photoluminescence (PL) spectroscopy. The results indicated that the hybrids have large surface area, mesoporous structure and enhanced visible-light absorption. The as-prepared hybrid samples exhibited considerable improvement in photocatalytic activity and stability for rhodamine B (RhB) degradation under visible light irradiation (λ > 420 nm). In addition, they also have good adsorption properties. Compared to the pure g-C3N4 and Ag/g-C3N4, the 5% AHC photocatalyst showed superior photocatalytic activity. Moreover, 5% AHC exhibits good photocatalytic activity even after four cycles. Additionally, the active species trapping and electron spin resonance (ESR) experiments indicated that h+ and ·OH were the main active species.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Tao Zhang,Yan Liu,Chuncheng Yang,Limei Tian,Yuying Yan,Guoyong Wang
Besides composition , the electrochemical CO 2 reduction reaction (CO 2 RR) is also very sensitive to the structure of catalyst due to the complex intermediates. In this paper, a series of Cu-Ag biphasic catalysts with a similar average value of unimodal phase size distribution were synthesized. The phase interface area of the biphasic catalyst can be manipulated by the element ratio due to the unimodal phase size distribution. The catalytic performances of Cu-Ag biphasic catalysts for CO 2 RR to CO were studied and it is found the conversion selectivity heavily depends on the phase interface area. The maximum phase interface makes the original inert copper catalyst have excellent electrochemical performance . A high FE CO of 80.25% was attained with a partial current density of − 4.88 mA cm −2 at − 0.9 V vs RHE in Cu 50 Ag 50 and the FE CO was almost not attenuated within 25 h. The catalytic performances are even better than those of Ag 100 catalyst. The paper enlightens another way to reduce the dependence of electrochemical catalyst on noble metals. The phase interface can be further increased with less noble metal element proportion, for the methodology of this paper ignores the thickness of the phase.
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Russian Journal of Physical Chemistry A
·
2026
·Vol. 100
·期 10
·2407-2418
·
IF 0.7
Xuan Liu,Huang Jinliang,Guo Feifei,Chang Liangliang,Zhou Chunsheng,Xi Zengzhe
This study presents a novel strategy to significantly enhance the piezocatalytic performance of BiFeO 3 for antibiotic degradation by integrating cation co-doping and noble metal decoration. To address the inherent limitations of rapid charge recombination and insufficient active sites in pristine BiFeO 3 , Gd, and Zr co-doped BiFeO 3 (BGFZ9) NPs were first synthesized via a sol-gel method. Subsequently, Ag NPs were uniformly deposited on the BGFZ9 surface through a facile photochemical reduction process to construct Ag/BGFZ9 nanocomposites. Comprehensive characterizations including XRD, XPS, TEM, and VSM confirmed the successful formation of the perovskite structure, uniform dispersion of Ag NPs, and tailored magnetic properties. The optimized Ag2/BGFZ9 catalyst demonstrated remarkable piezocatalytic and piezo-photocatalytic activity towards ofloxacin, achieving degradation efficiencies of 82.54 and 86.98% within 120 min under ultrasonic and combined ultrasonic/visible-light irradiation, respectively. The corresponding first-order rate constants were 0.0147 and 0.0164 min –1 , representing a significant enhancement over the undoped and unmodified counterparts. The superior performance is attributed to the synergistic interplay of multiple factors: (1) the Gd/Zr co-doping induced lattice distortion and optimized band structure, enhancing the intrinsic piezoelectric response; (2) the formation of a Schottky junction at the Ag/BGFZ9 interface, which acted as an efficient electron sink to suppress charge carrier recombination; and (3) the LSPR effect of Ag NPs under visible light, which broadened light absorption and generated hot electrons. Radical trapping experiments and EPR spectroscopy identified \( \bullet {\kern 1pt} {\text{O}}_{2}^{ - }\) and \( \bullet {\kern 1pt} {\text{OH}}\) as the primary reactive oxygen species. The catalyst maintained 82.13% of its initial activity after five consecutive cycles, demonstrating excellent stability and magnetic recoverability. This work elucidates a synergistic piezoelectric-plasmonic coupling mechanism and provides a viable design principle for developing efficient, stable, and magnetically separable multiferroic catalysts for advanced oxidation processes in wastewater remediation.
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Materials Science & Engineering C-Materials for Biological Applications
·
2020
·
IF 5.88
Dan Yan,Qinke Yao,Fei Yu,Liangbo Chen,Siyi Zhang,Hao Sun,Jinyou Lin,Yao Fu
Corneal and conjunctival infections are common ocular diseases, sometimes, causing severe and refractory drug-resistant bacteria infections. Fungal keratitis is a leading cause for blindness and traditional medical treatment is unsatisfactory. Thus, there is an urge to develop a new therapy to deal with these cases. In this study, we developed surface modified poly(lactic acid) (PLA) electrospun nanofibrous membranes (EFMs) with silver nanoparticles (AgNPs) and cellulose nanofibrils (CNF) as scaffolds for cell proliferation and antimicrobial application. The AgNPs with a very low content (below 0.1%) were easily anchored on the surface of PLA EFMs by CNF, which endowed the scaffold with hydrophilicity and antibacterial ability. The in-vitro cell co-culture experiments showed that the scaffold had great biocompatibility to ocular epithelial cells, especially the scaffolds coated by CNF, which significantly proliferated cells. Furthermore, the antibacterial activity could reach >95% inhibiting Escherichia coli ( E. coli ) and Staphylococcus aureus ( S. aureus ) due to the implantation of AgNPs, and the antifungal activity was also outstanding with most of the Fusarium spp. inhibited. Hence, the developed PLA EFMs with CNF and AgNPs are promising ocular bandages to promote cell proliferation and kill infectious pathogens, exhibiting potential applications in ocular wound healing in the future.
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npj Flexible Electronics
·
2026
·
IF 15.4
Cai Yanzhi,Ding Hui,Cheng Laifei,Yin Hongfeng,Chen Dengpeng,Bai Mingshu,Chen Xiaohang,Qian Xinyu,Jiang Yunge,Wei Fanfan
This study addresses key challenges of long-term stability, wide range, and high sensitivity in piezoresistive strain sensors by developing a multilayer composite. A parallel circuit is constructed using carbon nanotube@silver nanoparticles-MXene (CNT@AgNPs-MXene) and expanded graphite (EG) double sensing layers, exploiting EG’s interlayer sliding and recovery capability derived from its wide layer spacing, and is integrated with a thermoplastic polyurethane (TPU) support layer. This design provides complementary current pathways, where a redundant path is offered by the other layer when one layer breaks. The resulting CNT@AgNPs-MXene/EG/TPU trilayer (double sensing layers with a TPU support) achieves stable operation over 150,000 cycles, a working range of 630% (709% mechanically), and a maximum GF of 4091.74. In comparison, the EG/TPU bilayer (single EG layer with a TPU support) is also stable for 150,000 cycles and exhibits a higher maximum GF (16083.30) but a narrower working range (245%). Consequently, each sensor holds a distinct performance edge. The bilayer excels at detecting ultra-fine motions, while the trilayer is advantageous for large-strain scenarios. Both sensors reliably monitor diverse human motions and maintain long-term stability in harsh environments (fresh water, sweat, alkaline/acidic conditions). This work provides a new strategy for high-performance, durable sensors for harsh environments.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.6
Wenbao Huang,Houfen Li,Zhiyi Dang,Shibo Xu,Rong Han,Rui Li,Aijuan Zhou,Xiuping Yue,Xu Zhao,Jiancheng Wang
Persulfate-assisted visible-light photocatalysis shows promise for refractory organic pollutant degradation but is limited by low charge separation/utilization in conventional catalysts. Leveraging the unique charge-separation capability of Schottky junctions and the tunable surface charge properties of ferroelectric materials, this study innovatively constructs a polarized BiFeO 3 -Ag (BFOA*) Schottky junction catalyst to drive the synergistic persulfate (PS)/visible-light (VIS) catalytic degradation of quinoline. Comprehensive characterization confirms the formation of the BiFeO 3 -Ag Schottky junction. Pronounced hysteresis loops and distinct domain structures observed via piezo-response force microscopy (PFM) demonstrate that corona poling induces a stable built-in ferroelectric polarization field. In the VIS/PS/BFOA* system, the polarized catalyst achieves 98.8 ± 1.1% quinoline degradation within 90 min, significantly outperforming its unpolarized counterpart (88.1 ± 4.0%), while maintaining excellent cycling stability and markedly reduced effluent toxicity. Mechanistic investigations and DFT calculations reveal that ferroelectric polarization facilitates directional electron migration through the Schottky junction, while the Schottky barrier suppresses the backflow of the photogenerated electrons, thereby synergistically improving charge carrier separation. Simultaneously, ferroelectric polarization–induced charged surface sites promote the adsorption and activation of PS. This dual function results in abundant reactive species (h + , ·O 2 − , SO 4 · − , ·OH), which are responsible for the efficient quinoline degradation. This work highlights ferroelectric polarization engineering as a pivotal strategy for strengthening Schottky junction catalysts and establishes it a viable approach for designing sustainable advanced oxidation processes in wastewater treatment. Download: Download high-res image (193KB) Download: Download full-size image
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JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
·
2026
·
IF 4.1
Zheng Chen,Yang Yu-Ma,Xiao Jian-Wu,He Jun-Jie,Lin Bo,He Fu-An
In this work, the novel multifunctional electrospun trimethoxy (1H,1H,2H,2H-heptadecafluorodecyl)silane (TMHFDS)/Ag-TiO 2 /polyvinylidene fluoride (PVDF) mats were prepared. In the preparation process, the AgNO 3 was reduced to be the Ag nanoparticle and then in situ deposited on the TiO 2 nanoparticle to form the Ag-TiO 2 hybrid, which was used as the filler to fabricate the electrospun Ag-TiO 2 /PVDF mats followed by the TMHFDS modification. The successful preparation of the electrospun TMHFDS/Ag-TiO 2 /PVDF mats were proved by the characterizations of scanning electron microscopy, two-dimension energy-dispersive X-ray spectroscopy mapping, Fourier transform infrared spectroscopy, differential scanning calorimeter, and wide-angle X-ray diffraction. The electrospun TMHFDS/Ag-TiO 2 /PVDF mats possessed not only the enhanced crystallinity degree and useful piezoelectric β-crystal content of PVDF than those of the PVDF solid film and the electrospun PVDF mat but also the photocatalytic degradation ability for the oil red O dye. Moreover, for the electrospun TMHFDS(3%)/Ag-TiO 2 (30%)/PVDF mat, its water contact angle reached as high as 156.4° which was 24.6° higher than that of the electrospun PVDF mat before the TMHFDS modification, and its oil absorption capacities for valorous oils ranged between 16.3 g g −1 and 25.1 g g −1 , exhibiting the well oil–water separation ability.
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TALANTA
·
2026
·
IF 6.7
Dan Huang,Ling Li,Renjie Li,Wenxi Wang,Wenli Chen,Xiandeng Hou,Li Wu
Tetracycline hydrochloride (TCH) is a widely used antibiotic in animal husbandry and aquaculture practices, and its residual accumulation in food commodities constitutes a persistent public health concern. Therefore, sensitive, time-saving, and reliable analytical strategies for TCH are critical for guaranteeing food safety. Surface-enhanced Raman spectroscopy (SERS) has become an ideal analytical modality, attributed to its ultrahigh sensitivity, operational simplicity, and inherent molecular fingerprinting capability. The integration of plasmonic metal materials (PMPs) with the functional material provides a rational design strategy for advanced SERS substrates. A case in point is that of metal-organic frameworks (MOFs). However, the construction of MOF-PMPs composites is hindered by complex fabrication protocols, prolonged preparation time and high cost. Electrochemical deposition, characterized by rapid processing, facile parameter tuning, and environmental compatibility, presents a promising alternative for SERS substrate construction. In this work, we present a novel Ag/Zn-BTC@NF composite SERS substrate synthesized via two-step electrodeposition. The as-fabricated material delivers prominent SERS sensitivity. When R6G is used as the specific molecule, LOD (detection limit) can reach 10 −9 M, and the enhancement factor is 6.6 × 10 6 . Furthermore, the substrate achieved an LOD of 10 −8 M for TCH and enabled its ingenious detection in milk and honey samples, with recoveries of 87.4 − 112.5%. The proposed methodology establishes an efficient and eco-friendly synthetic strategy for MOF-PMPs composites, thereby broadening the scope of SERS technology in food safety applications.
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MICROCHIMICA ACTA
·
2026
·Vol. 193
·期 6
·383
·
IF 5.4
Hu Rongjing,Fu Shilan,Zhang Jingwen,Zhang Jiadan,Fu Fengfu,Lin Zhenyu,Dong Yongqiang
A new method is developed to synthesize Au/Ag alloy nanoparticles (Au/Ag-NPs). The obtained Au/Ag-NPs are further dispersed in polyvinyl alcohol (PVA) solution to construct Au/Ag hydrogel surface enhanced Raman scattering (SERS) chips through a simple Ca 2+ -mediated aggregation of Au/Ag-NPs and a physical crosslinking of PVA. The formed aggregated Au/Ag-NPs (a-Au/Ag-NPs) show a strong localized surface plasmon resonance corresponding to the commonly used 532 nm laser. Therefore, under the action of 532 nm laser, the abundant nanogaps contained in the a-Au/Ag-NPs turn to high active electromagnetic “hot spots”, providing strong electromagnetic enhancement (EM). Moreover, Au/Ag-NPs provide a moderate Fermi level of -4.72 eV, which facilitates its photo-induced charge transfer with many molecules under 532 nm laser irradiation, resulting in the chemical enhancement (CM) effect. The synergistic effect of EM and CM leads to ultrahigh SERS activity. Additionally, the unique structure of hydrogel provides excellent signal uniformity and robust anti-interference ability. Thus, the obtained Au/Ag hydrogel SERS chips are ideal SERS platform for the quantitative determination of many molecules. For instance, a sensitive and reliable SERS method is established for the simultaneous detection of methyl parathion and triazophos in fruits and tea. Graphical The alternative text for this image may have been generated using AI.
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LANGMUIR
·
2026
·Vol. 42
·期 29
·21139-21154
·
IF 4.4
Mai Quan-Doan,Dang Thi Hanh Trang,Tran Van Tiep,Ngo Thi Loan,Ong Van Hoang,Cao Thi Hong,Nguyen Quang Hoa,Lich Le Van,Nguyen Cong Chi,Mai Xuan Trang,Phan Manh-Huong,Pham Anh-Tuan,Le Anh-Tuan
Surface-enhanced Raman spectroscopy (SERS) is a powerful
analytical
technique capable of providing rapid and noninvasive molecular fingerprint
identification through characteristic vibrational signatures. However,
developing SERS platforms that enable both ultrasensitive and highly
selective detection, particularly for molecules with intrinsically
weak Raman responses, remains a major challenge, yet it is highly
desirable for expanding the currently limited application scope of
SERS. Herein, we introduce a novel plasmonic porous multicore@shell
Ag@UiO-66 nanostructure that synergistically integrates the localized
surface plasmon resonances (LSPRs) of Ag nanoparticles (NPs) with
the selective molecular capture capability of the metal–organic
framework UiO-66. The hybrid structure is fabricated via a simple
solvent-induced self-assembly strategy, enabling in situ formation
of UiO-66 around dispersed AgNPs at room temperature. The resulting
architecture immobilizes multiple AgNP cores within a porous UiO-66
shell matrix, simultaneously stabilizing their plasmonic activity
and generating abundant interparticle hotspots. More importantly,
the UiO-66 shell provides molecular recognition toward salicylic acid
(SA─a bioactive aromatic compound) through synergistic adsorption
interactions involving bidentate coordination with Zr nodes, hydrogen
bonding, and π-π interactions. This cooperative plasmonic-molecular
recognition mechanism effectively concentrates target molecules at
electromagnetic hotspots, leading to significantly enhanced SERS signals.
As a result, the developed platform achieves highly selective and
ultrasensitive detection of SA with a detection limit down to 1 nM,
far surpassing that of traditional SERS substrates (∼1 μM).
Furthermore, machine learning-assisted spectral analysis confirms
the reliable and selective identification of SA in complex mixtures.
This work demonstrates an effective strategy for developing MOF-enabled
selective and ultrasensitive SERS platforms, opening new avenues for
advanced molecular sensing applications.
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APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Qiang Bi,Kechun Wang,Yi Zhao,Guangdong Wu,Yanyan Zhou,Changbin Tang,Zhihua Leng,Juanqin Xue
Graphitic carbon nitride (g-C 3 N 4 ) is restricted by its narrow light absorption range, which results in low photocatalytic efficiency. To address this problem, a plasmon- and upconversion-enhanced ternary photocatalyst (denoted as GdF 3 @g-C 3 N 4 @Ag) was subtly designed and synthesized in situ. The g-C 3 N 4 nanosheets were encapsulated on the GdF 3 by a simple vapor deposition method, which has not been reported in the literature. The GdF 3 @g-C 3 N 4 @Ag composite exhibits full-spectrum responsiveness and remarkably improved photocatalytic activity in the degradation of tetracycline hydrochloride compared with plain g-C 3 N 4 . The degradation rate constant of the best-performing photocatalyst GdF 3 @g-C 3 N 4 @5%Ag (2.618 × 10 −2 min −1 ) is higher than that of g-C 3 N 4 (1.723 × 10 −2 min −1 ) under irradiation at λ ≥ 400 nm. This study develops a full-spectrum responsive photocatalyst based on GdF 3 @g-C 3 N 4 @Ag, showing its great potential to fully utilize the solar spectrum, and provides important insights into the construction of full-spectrum responsive photocatalysts.
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