APPLIED PHYSICS LETTERS
·
2012
·Vol. 101
·期 1
·
IF 3.844
Zhou Yongcun,Wang Lu,Zhang Hu,Bai Yuanyuan,Niu Yujuan,Wang Hong
A kind of polymer based composites was prepared by embedding the fillers of core-shell Ag@SiO 2 nanoparticles into the polyimide (PI) matrix. The obtained Ag@SiO 2 /PI (50% vf of fillers) composites show remarkably improved high thermal conductivity and low relative permittivity. The maximum value of the thermal conductivity of composites is 7.88 W/(mK) and the relative permittivity and dielectric loss are about 11.7 and 0.015 at 1 MHz, respectively. Compared with self-passivated nanometer Al* particles composites, core-shell Ag@SiO 2 nano-composite is beneficial to increase the thermal conductivity and reduce the permittivity of the composites. The relative mechanism was studied and discussed.
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Soft Science
·
2026
·Vol. 6
·期 3
·N
·
IF 15.9
Hengyuan Shang,Jiangtao Li,Beibei Shao1,Bo Shi1,Yuqi Liu1,Teng Gao1,Yuxuan Li,Yanyun Liu,Le Jen Huang,Wenzhe Chen,Tao Song,Baoquan Sun
Wearable electrophysiological interfaces demand bioelectrodes that combine low-impedance, stable ion-electron transduction with high mechanical deformability, yet these requirements remain fundamentally incompatible in existing systems. Here, we present a nonpolarizable stretchable dry electrode based on a bead-on-string Ag/AgCl heterostructure, in which AgCl nanoparticles (NPs) are selectively assembled along percolated silver nanowire networks embedded within an elastomer matrix. This architecture spatially decouples Faradaic reaction sites from conductive pathways, constructing abundant, mechanically robust Ag/AgCl heterointerfaces for efficient ion-electron transduction while preserving continuous electron transport under large deformation. By systematically tuning the size of AgCl NPs (50-800 nm), the spatial distribution and interfacial length scale of Faradaic domains are optimized to maximize electrochemical performance. The resulting electrode achieves ultralow interfacial impedance (49 kΩ, 10 Hz), stable electrode potentials, and tolerance to severe mechanical deformation (ε > 370%), with minimal degradation over 500 stretch cycles. It enables low-noise, high-fidelity signal acquisition in the low-frequency regime, effectively suppressing motion artifacts and maintaining stable operation over 120 days of storage in air. When integrated with a spatiotemporal neural network for electrooculography decoding, the system achieves 98% accuracy in hands-free game control, demonstrating a robust paradigm for next-generation wearable bioelectronics.
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Biosensors-Basel
·
2026
·Vol. 16
·期 7
·376
·
IF 6.2
Mengli Wang,Yuanyuan Xia,Yulei Li,Lifen Chen,Kunyan Wang,Shuangshuang Wu,Yuelan Zhang
In this work, we developed a novel, ultrasensitive fluorescence sensing platform for determination of organophosphorus pesticides (OPs), using chlorpyrifos as a representative model analyte. The sensing strategy was constructed upon the key inner filter effect (IFE) between graphitic carbon nitride (g-C3N4) nanosheets and silver-coated gold core–shell nanoparticles (Au@Ag NPs). Initially, gold nanoparticles (Au NPs), silver nanoparticles (Ag NPs), and Au@Ag NPs were successfully synthesized, and their fluorescence quenching efficiencies toward g-C3N4were systematically evaluated. Owing to the superior spectral overlap with the fluorescence emission of g-C3N4, Au@Ag NPs exhibited the most obvious quenching effect and were thereby selected as the optimal quencher for sensor fabrication. Then, acetylcholinesterase (AChE) catalyzed the hydrolysis of acetylthiocholine (ATCH) into thiocholine. The generated thiocholine then induced aggregation of Au@Ag NPs via electrostatic and Ag-S interactions, which reduced the IFE efficiency and ultimately restored the fluorescence of g-C3N4. In contrast, the presence of chlorpyrifos effectively inhibits AChE activity, thereby suppressing ATCH hydrolysis and the subsequent aggregation of Au@Ag NPs. The fluorescence intensity of g-C3N4was quenched by Au@Ag NPs and the signal was low. Under optimal experimental conditions, the response signal was found to be proportional to chlorpyrifos (CPF). This work presents a rapid, cost-effective, and highly sensitive approach for CPF residue analysis, holding great potential for applications in food safety monitoring and environmental surveillance.
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ACS Photonics
·
2026
·
IF 6
Yujia Luo,Yikun He,Yuyao Feng,Wanzhong Gu,Wanling Mao,Yixuan He,Liang Ke,Yuhui Dong,Yousheng Zou
Eco-friendly Ag–In–Ga–S (AIGS) quantum dots (QDs) are potential alternatives in white light-emitting diodes (WLEDs) due to their high photoluminescence quantum yield (PLQY) and tunable emission. The conventional stacked-film structure using multicomponent QDs suppresses reabsorption losses among different color QDs, but inevitably introduces interfacial optical losses and manufacturing complexity and cost. In this study, a single color-conversion blended film with uniform and excellent luminescence is fabricated using high-PLQY red-emitting (85%) and green-emitting (91%) AIGS QDs simultaneously incorporated into a PMMA matrix. This deliberately utilizes reabsorption governed by the relative ratio between red and green QDs rather than solely suppressing it, thereby eliminating interfacial losses and enhancing luminance, which results in higher photoluminescence emission while maintaining a nearly identical low blue-light transmittance. Furthermore, the blended-film WLED fabricated by integrating the blended film with a blue LED chip exhibited a higher luminance (532.3 cd/m2), representing a greater than 25-fold increase over the conventional stacked-film device (21.0 cd/m2). The blended-film WLED achieved CIE chromaticity coordinates of (0.31, 0.32) and a color rendering index (CRI) of 87.3. The study provides a better understanding of reabsorption in single-layer multicolor QD films and promotes the development of simple and efficient I–III–VI QD backlight films for white-light display applications.
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ACS Applied Materials & Interfaces
·
2026
·
IF 7.8
Yimeng Zhou,Tingting Chen,Jie Ding,Hao Li,Di Wu,Xuran Xu,Qin Zhong
Controlled hydrogen spillover is of paramount importance for the precise regulation of target products in the hydrogenation selectivity. In this study, Pd@1Al2O3/Ag catalyst was designed and prepared for the hydrogenation-acetalization of diethyl oxalate (DEO) to 1,1-diethoxyethane (DEE) with excellent DEE selectivity (83.0%) and high DEO conversion (99.9%). Pd species are mainly responsible for the generation of H* species from H2 adsorption and dissociation, and Al2O3 acted as a delivery channel for H* species to migrate and mass transfer from H* to Ag nanoparticles loaded on the catalyst surface, which facilitated the progression of subsequent DEO hydrogenation-acetalization reactions. This study provides a promising strategy for high hydrogenation-acetalization efficiency via controllable hydrogen spillover.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2026
·
IF 3.9
Li Mei,Qian Wang,Yao Yao,Xiaolong Fang,Ziwen Li,Chao Liu,Ganggang Chang,Xiaoyu Yang
Tandem catalysis can enhance the reaction efficiency and selectivity while reducing separation and purification steps, thus improving the development of “green chemistry”. The tandem synthesis of cyclic carbonates (CCs) from olefins and CO2 is becoming one of the most promising strategies; however, designing a multifunctional catalyst with multiple sites and fast mass transfer channels to overcome mass transfer resistance at different sites remains a challenge. In this work, we controllably synthesized a bulk and nanosheet (NS) structure of Ni-BDC-NH2 (Ni-BDC-NH2 NS) via a solvent regulation strategy and successfully immobilized Ag+ in Ni-BDC-NH2 NS to form Ag+@Ni-BDC-NH2 NS, which integrated highly exposed, synergistic acid (Ag+) and base (−NH2) active sites, along with rapid mass transfer channels. Benefiting from these synergistic effects and structural advantages, Ag+@Ni-BDC-NH2 NS efficiently catalyzed one-pot synthesis of CCs from olefins and CO2, achieving 99% conversion of styrene and 51% selectivity for styrene carbonate (SC) under optimal conditions, which was significantly higher than that of contrast catalysts lacking Ag+ or –NH2 (SC selectivity <30%). Based on experiments, a feasible mechanism was proposed, in which the Lewis acid sites (Ag+) catalyzed olefin epoxidation, while the Lewis base sites (−NH2) and acid sites (Ag+) synergistically catalyzed the cycloaddition reaction of CO2 and epoxides. Additionally, the catalytic performance and structural stability were maintained even after five successive recycling tests.
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Journal of Cleaner Production
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2026
·
IF 10.7
Shanshan Sun,Yurong He,Tianqi Tang,Siyu Hui
While semiconductor-based photocatalysis presents a promising avenue for CO 2 reduction, the application of conventional TiO 2 is restricted by its limited light absorption, short photogenerated charge carrier lifetime, and poor CO 2 adsorption capability. To overcome these constraints, we constructed multifunctional Ag/Cu-TiO 2 /graphitic-phase polyacrylonitrile (g-PAN) composites. In this system, g-PAN functions as a robust support for Ag/Cu nanoparticle-loaded TiO 2 fibers synthesized via electrospinning and heat treatment. UV–Vis NIR DRS analysis reveals synergistic light harvesting where the localized surface plasmon resonance of Ag/Cu nanoparticles extends absorption into the near-infrared and g-PAN doubles the intensity by trapping photons within nanocavities. Beyond these optical benefits, g-PAN enhances CO 2 adsorption and accelerates charge transfer. Consequently, the Ag/Cu-TiO 2 /g-PAN composite achieves a CO evolution rate of 11.82 mmol/g/h under simulated solar irradiation, representing a twice increase compared to the Ag/Cu-TiO 2 counterpart. As evidenced by Electrochemical Impedance Spectroscopy and instantaneous photocurrent response, g-PAN acts as an electronic bridge that significantly reduces the resistance to photogenerated charge migration. This study provides novel insights into designing highly efficient composite photocatalysts for sustainable CO 2 conversion, contributing to the advancement of cleaner production and green technologies.
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Nanomaterials
·
2026
·Vol. 16
·期 7
·438
·
IF 4.8
Congwen Liu,Wei Deng,Hai Zhang,Xiaochen Han,Qiang Ran,Wenxuan Yu,Xiaoling Xu,Zuowan Zhou
Photocatalytic degradation is a highly efficient, stable and promising technology for water treatment. Developing high-performance photocatalysts is crucial for removing aquatic contaminants. However, traditional zinc oxide (ZnO) photocatalysts are severely restricted by intrinsic drawbacks, such as a wide band gap, fast recombination of photogenerated carriers, and high photocorrosion tendency. Conventional powder catalysts also suffer from difficult recovery and serious secondary pollution. Therefore, developing simple strategies to fabricate high-performance, reusable, and stable ZnO-based photocatalysts is of great scientific and practical importance. In this work, silver-loaded nitrogen-doped ZnO nanoarrays (AgY@NX-ZnO NAs, where X and Y represent the urea and AgNO3concentrations, respectively) were synthesized on 304 stainless steel sheets (SSS) using a two-step hydrothermal method combined with photoreduction at room temperature. The samples were characterized by XRD, FESEM, XPS, and UV-Vis DRS, and the catalytic mechanism was studied through active species trapping and EPR. Nitrogen doping and Ag loading exhibited a strong synergistic effect, narrowing the band gap, enhancing visible-light absorption, and promoting the separation of photogenerated carriers. The optimal sample (Ag1.5@N4-ZnO NAs) degraded 93.2% of Rhodamine B (RhB) within 180 min, with a reaction rate constant 2.65 times higher than pure ZnO. The main active species were ·O2−and ·OH. This work provides a feasible route to fabricate recyclable and stable stainless steel-based ZnO nanoarray photocatalysts for efficient water purification.
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Carbon Resources Conversion
·
2026
·
IF 10.9
Huiyang Bian,Tingting Xi,Yufan Feng,Jun Chen,Wenhao Wang,Zixuan Zhao,Sha Wang,Weiqi Wei,Xuelian Zhou
Improving the dispersibility and recoverability of powdered catalysts is essential for developing efficient and cost-effective photocatalytic systems. Herein, silver-loaded β -FeOOH/quaternized cellulose nanofibrils composite hydrogel, denoted as Ag@ β -FeOOH/QCNF, was successfully prepared via an in-situ synthesis approach combined with photodeposition for environmental remediation. The composite hydrogel consisted of a three‑dimensional porous network, with β -FeOOH photocatalysts and Ag nanoparticles uniformly distributed. The composite hydrogel not only exhibited adsorption capacity toward organic pollutant but also established multidimensional electron‑transport pathways that facilitated the migration of photo-generated charge carrier, thereby significantly enhancing light-harvesting efficiency. The synergistic effect between adsorption and photocatalysis enabled hydrogel to achieve nearly complete degradation of tetracycline (100%) within 30 min under simulated visible light, while maintaining a removal efficiency above 94% over five consecutive cycles, demonstrating outstanding stability and reusability. Free radical scavenging experiments demonstrated that ·OH and h + were the primary reactive species responsible for pollutant degradation. Overall, this study presents a straightforward approach to construct 3D network-structured hydrogel materials with efficient photocatalytic performance, which holds significant potential for applications in water purification.
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BIOSENSORS & BIOELECTRONICS
·
2026
·
IF 11.8
Jixiang Li,Genyun Zhou,Fei Wu,Jinping Yuan,Linan Hu,Qiang Zhang,Wenge Yang,Yonghong Hu
Tetracycline (TC) is a persistent broad-spectrum antibiotic that poses significant threats to human health and the environment. Herein, we developed an ultrasensitive photoelectrochemical (PEC) biosensor for rapid TC detection. The sensor utilizes a flexible Si-doped carbon fiber membrane derived from polyacrylonitrile and dimethyldiethoxysilane as a conductive substrate. After coating with poly (3,4-ethylenedioxythiophene) and polystyrene sulfonate (PEDOT: PSS), a ternary UiO-66-NH 2 /Ag/g-C 3 N 4 Z-scheme heterojunction is assembled as the photoactive core, followed by electrostatic immobilization of laccase to achieve specific TC recognition. Electrochemical characterization confirmed that laccase improved both the biocatalytic activity and electron-transfer efficiency of the electrode. Combined with transient photocurrent measurements and molecular dynamics simulations, the sensing mechanism was shown to be dominated by steric hindrance arising from TC occupation of the laccase active site, followed by oxygen consumption, yielding a detection limit of 0.012 μM over 0-30 μM TC (R 2 = 0.993). UV diffuse reflectance spectra (UV-DRs), Mott–Schottky analysis (M-S), and electron paramagnetic resonance (EPR) measurements further verified that the Ag-mediated Z-scheme pathway significantly enhanced carrier separation. With excellent stability and anti-interference performance in real river water and complex matrices, this work provides an effective strategy for antibiotic detection by integrating flexible carbon-based substrates with advanced Z-scheme photocatalytic systems.
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Kaizhou Huang,Wei Qu,Tenghui Jin,Yutong Xie,Zhuoyun Tang,Ming Su,Ping Zhang,J. Paul Chen
Carbon nitride can be used in solar photocatalysis for treatment of antibiotic contaminants; however it often suffers exciton trapping and sluggish interfacial electron transfer, limiting O 2 activation. Herein, nitrogen-vacancy-regulated plasmonic Schottky interfaces are constructed by introducing N vacancies into C 3 N 5 and anchoring Ag nanoparticles (CNV-Ag). Under AM 1.5G irradiation, CNV-Ag achieves ~100% sulfamethoxazole removal within 60 min, giving an apparent rate constant ~75× higher than pristine C 3 N 5 . The catalyst performs robustly in complex water matrices, degrades multiple antibiotics, and remains stable in flow operation with 94.4% outlet removal over 6 h. Quenching and electron paramagnetic resonance spectroscopy identify •O 2 − , h + , and 1 O 2 as the dominant oxidants. The theoretical calculations reveal that N vacancies upshift the Fermi level, enhance interfacial charge exchange, lower the work function, and promote band bending to favor O 2 reduction. This paradigm offers a general blueprint for coupling defect chemistry with plasmonic charge management to enable scalable, solar-driven oxidative technologies for broad-spectrum water purification.
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Science China-Technological Sciences
·
2026
·Vol. 69
·期 5
·1520202
·
IF 5.1
Niu Jiaxin,Ling Hangyang,Sun Xu,Sun Gongxian,Wang Shengyan,Li Feiyan,Zhang Na,Chen Tianshuang,Zhuo Xiaolu,Zhu Jinjin,Zhang Han,Kong Xiangdong
Bacterial infections pose persistent threats to global public health, while the antimicrobial resistance caused by the overuse of antibiotics further exacerbates this problem. The development of novel disinfectants that are efficient, durable, broad-spectrum, and deploy non-antibiotic mechanisms is therefore highly desired. Multifunctional nanocomposites with multi-effect antibacterial properties can meet the above demands. Herein, we developed a core-shell nanocomposite of Au-Ag nano-urchins coated with room-temperature synthesized covalent organic frameworks for efficient morin loading and multi-scenario antibacterial applications. This material achieves exceptional bactericidal efficacy at ultralow doses by combining photothermal therapy, tip-mediated physical puncture, and the action of released antibacterial components. It achieves over 99.99% in-activation of both Escherichia coli and Staphylococcus aureus at a low concentration of 8 µg mL −1 under weak xenon lamp illumination of 0.3 W cm −2 . The nanocomposites can be readily spray-coated onto various surfaces, forming a durable and stable antibacterial layer. Furthermore, in the in vivo infected wound healing model, the nanocomposite demonstrated excellent antibacterial efficacy and promoted nearly complete wound closure within 7 days. By integrating physical puncture, photothermal effect, and controlled drug/ion release, this nanocomposite offers an effective strategy for daily antibacterial applications.
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