COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2025
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IF 5.4
Xinyu Chen,Yingrui Nie,Wenqian Fan,Zhimin Zhao,Zhifei Wang,Yong Jiang
In this study, yolk-shell magnetic hydrogel microspheres loaded with silver nanoparticles (Fe 3 O 4 @P(DVB-co-MAA)@Ag) were innovatively constructed for efficient catalytic reduction of nitroaromatic compounds. First, hollow P(DVB-co-MAA) microspheres were prepared as shell. Fe 3 O 4 magnetic nanoparticles were successfully deposited into the microspheres as yolk through the decomposition of metal-organic precursor salts in high-temperature organic solvents. The EM images shows that Fe 3 O 4 @P(DVB-co-MAA) microspheres consist of a magnetic core, an intermediate void layer, and a hydrophilic hydrogel shell, demonstrating a unique multilayered structural feature. Then, highly active silver nanoparticles were uniformly loaded onto the hydrogel shell surface using the thermal co-reduction method. Catalytic results demonstrated that the yolk-shell material showed significantly enhanced activity toward the reduction of 4-nitrophenol (4-NP) and 2-nitroaniline (2-NA), compared to the core-shell structured composite microspheres. The catalytic parameters were 65.44 s⁻¹ g⁻¹ and 46.44 s⁻¹ g⁻¹ , respectively. Remarkably, the composite retained over 85 % catalytic efficiency after five cycles of use and achieved rapid magnetic separation within 20 s under an external magnetic field.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Wei Ni,Guixin Li,Yutong Zhao,Yi Fang,Shan Huang,Fuxiang Wei,Qi Xiao
The development of multifunctional nanomaterials for efficient detection of hazardous metal ions and effective antibacterial treatment is of great significance in environmental monitoring and public health protection. In this study, nitrogen-doped red carbon dots (R-CDs) with a fluorescence emission peak of 633 nm were synthesized through a facile one-pot hydrothermal approach using p -phenylenediamine and D-sorbitol as precursors. The obtained R-CDs possess outstanding photostability and water dispersibility. Based on a combined mechanism of electron transfer and static quenching, the R-CDs serve as a highly sensitive fluorescent probe for Ag + detection, achieving a detection limit as low as 0.43 μM. To extend their practical utility, a portable smartphone-assisted sensing platform coupled with RGB color analysis was constructed, allowing direct capture and analysis of fluorescence images for rapid on-site visual quantification of Ag + with a detection limit of 2.95 μM. Moreover, the R-CDs exhibit a remarkable photothermal conversion efficiency of 38.86 % under 808 nm laser irradiation. Benefiting from this property, the material achieves an antibacterial efficiency of up to 99.91 % against E. coli through photothermal ablation. This work not only offers a reliable and field-deployable strategy for Ag + monitoring but also demonstrates the great potential of R-CDs as an integrated nanoplatform for environmental safety and biomedical applications.
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MICROCHIMICA ACTA
·
2025
·Vol. 192
·期 10
·1-14
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IF 5.3
Bi Leyao,Fu Boyan,Lin Jiahui,Wen Junsheng,Fu Jiaxing,Tian Wenyue,Su Ningning,Zou Binglin,Wang Chunjie,Wang Yue
Soda biscuit-like Ag-ZnO@ZIF-8 heterostructures were successfully synthesized using a secondary hydrothermal method for the first time, demonstrating exceptional ethylene glycol sensing performance. The sample (2-Methylimidazol (MeIm) concentration of 0.04 g) exhibits a remarkable response value of 1325.50 to 100 ppm ethylene glycol at 240 °C, along with a rapid response time of merely 7 s. Additionally, it displays outstanding gas selectivity (k = 28.63–696.90), great reproducibility and long-term stability. Further experiments indicate that the enhancement of the composite material’s gas sensing performance can be primarily attributed to the interfacial electron transfer effect, the abundance of oxygen vacancies, and the synergistic interactions within the heterostructures. Overall, this study lays a solid theoretical foundation for the practical detection applications of ethylene glycol and provides new insights into the research on gas sensors based on ZnO-organic frameworks. Graphical
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PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2021
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IF 8.067
Lin Zhang,Nuomei Li,Qiuchen Ma,Jiahui Ding,Chuang Chen,Zhaocheng Hu,Weiwei Zhao,Yufeng Li,Huanhuan Feng,Mingyu Li,Hongjun Ji
A series of large-area, flexible and transparent ultraviolet (UV) photodetectors (PDs) based on Ag nanowire (NW)@ZnO nanorods (NRs) are fabricated by an inexpensive, facile and effective approach. These Ag NW@ZnO NRs are successfully synthesized using a two-step method in an oil bath with a high surface-to-volume ratio and good crystallinity. The PDs are fabricated by drop-coating with different drop-coating times on the surface of polyethylene terephthalate (PET) coupled with Au electrodes. By optimizing the cross-linked network of Ag NW@ZnO NRs, PD2 with a size greater than 25 mm exhibits excellent photoresponse under UV light illumination of 365 nm (1.3 mW cm - 2 ) with a bias of 5 V: a high sensitivity of over 10 3 , and a much shorter rise/decay time of 2.6 s/2.3 s. Simultaneously, the detector exhibits an average transmittance of more than 70% in the visible light region, as well as good flexibility and excellent mechanical stability under a bending angle of 120° over 1000 circles bending. These integral advantages have significant potential for practical applications and mass production.
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高影响因子
Journal of Advanced Ceramics
·
2021
·Vol. 10
·期 4
·860-870
·
IF 6.707
Xu Wenjing,Zhang Zhongwei,Liu Chengyan,Gao Jie,Ye Zhenyuan,Chen Chunguang,Peng Ying,Bai Xiaobo,Miao Lei
Eco-friendly SnTe based thermoelectric materials are intensively studied recently as candidates to replace PbTe; yet the thermoelectric performance of SnTe is suppressed by its intrinsically high carrier concentration and high thermal conductivity. In this work, we confirm that the Ag and La co-doping can be applied to simultaneously enhance the power factor and reduce the thermal conductivity, contributing to a final promotion of figure of merit. On one hand, the carrier concentration and band offset between valence bands are concurrently reduced, promoting the power factor to a highest value of ∼2436 µW·m −1 ·K −2 at 873 K. On the other hand, lots of dislocations (∼3.16×10 7 mm −2 ) associated with impurity precipitates are generated, resulting in the decline of thermal conductivity to a minimum value of 1.87 W·m −1 ·K −1 at 873 K. As a result, a substantial thermoelectric performance enhancement up to zT ≈ 1.0 at 873 K is obtained for the sample Sn 0.94 Ag 0.09 La 0.05 Te, which is twice that of the pristine SnTe ( zT ≈ 0.49 at 873 K). This strategy of synergistic manipulation of electronic band and microstructures via introducing rare earth elements could be applied to other systems to improve thermoelectric performance.
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高影响因子
Frontiers of Chemical Science and Engineering
·
2023
·Vol. 17
·期 7
·930-941
·
IF 4.5
Tian Guodong,Duan Chao,Zhou Bingxu,Tian Chaochao,Wang Qiang,Chen Jiachuan
Membrane technology for wastewater remediation has aroused wide interest owing to its unique properties and potential applications. However, it remains challenging to explore green, efficient and robust membrane material and technique for complex wastewater treatment. Herein, we proposed using a simple electrospinning and in situ seeding method to fabricate a lignin-based electrospun nanofiber membrane (LENM) decorated with photo-Fenton Ag@MIL-100(Fe) heterojunctions for efficient separation of oil/water emulsions and degradation of organic dye. Thanks to the embedded lignin in LENM, an ultrahigh MIL-100(Fe) loading (53 wt %) with good wettability and high porosity was obtained. As a result, the hybrid Ag@MIL-100(Fe)/LENM exhibited excellent oil/water emulsions separation efficiency (more than 97%) without a compromise of water flux. Moreover, the hybrid membrane showed an excellent dye removal with degradation of 99% methylene blue within 30 min under illumination, which is attributed to a synergy of dye adsorption/enrichment and photo-Fenton catalytic degradation from Ag@MIL-100(Fe). Therefore, the lignin-based photo-Fenton hybrid membrane can lay the foundation for the preparation and application of green, sustainable and versatile membrane materials and technologies for efficient complex wastewater remediation.
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高影响因子
International Journal of Electrochemical Science
·
2023
·Vol. 13
·期 6
·5513-5521
·
IF 1.5
Feng Xiang,Wei-Ping Gan
In this study, a new Ag-Te doped glass frits were used to prepare silver pastes in order to improve the electrical properties of silicon solar cells. A set of silver pastes was formulated to investigate the effect of the doping proportion on the electrical properties of the silicon solar cells. The silver paste with 5wt% dopant increased the photovoltaic conversion efficiency of silicon solar cells by 0.199% compared to the increase achieved using the paste without the dopant. This effect could be attributed to the addition of dopant, which increased the size and number of Ag crystallites on the silicon wafer. The size and number of Ag crystallites were the major factors controlling the contact resistance between the silver electrode and the silicon wafer, and series resistance of solar cells. When the dopant proportion reached 10wt% or 15wt%, the p-n junction broke due to the oversized Ag crystallites embedded in the p-n junction. Thus, the leakage current was observed, and this current degraded the electrical properties of the silicon solar cells. Therefore, the proper proportion of Ag-Te doped glass frits was necessary to obtain the optimal the silicon solar cells.
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高影响因子
MATERIALS CHARACTERIZATION
·
2026
·
IF 6.2
Zhuxu Xu,Zhenhua Dan,Fengxiang Qin
Diffusion couples of Ag/Al stacking foils with layered structures as good precursors. • Rose-thorn-shaped nanoporous Ag inherits Ag 2 Al phase. • Flexibility of SERS substrates is from unreacted Ag layer and nanoporous Ag layer. • SERS limit of detection of 1 × 10 −16 mol·L −1 . • High Raman scattering is arisen from surface rose-thorn-shaped nanoporous Ag. Establishing highly accurate and sensitive surface enhanced Raman scattering (SERS) substrate is of critical importance for trace-level detection of probe molecules. An ultrasensitive and flexible Ag SERS substrate for rhodamine 6G (R6G) and crystal violet (CV) is rationally designed and successfully fabricated via the way of “geometric coupling design of thermal-diffusion induced phase growth” and “nanoporous structure inheritance”. The formation of rose-thorn-shaped nanoporous Ag and hierarchical nanoporous architecture with pore size distribution is governed by microstructural inheritance from tip diffusion growth Ag 2 Al intermetallic phase of Ag/Al thermal diffusion couples. Consequently, SERS substrate achieves ultralow detection limits of 10 −16 mol·L −1 for both R6G and CV, outperforming previously reported nanoporous Ag-based SERS substrates. The excellent mechanical flexibility originates from the synergistic integration of undiffused Ag layer as a structural backbone and nanoporous top-layer that undergoes controlled deformation for effective energy absorption. There rose-thorn-shaped nanoporous Ag collectively generate pronounced localized electromagnetic hot spots and stronger localized surface plasmon resonance, one of them yielding a local enhancement factor of approximately 10 5 . The superior SERS performance arises from enhanced surface scattering from rose-thorn-shaped nanostructure and strong electromagnetic coupling within the ultra-narrow nanopores with average pore size of 11 nm.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Lingzheng Feng,Wei Han,Xiaojun Guo,Jianzhang Zhu,Jiaqi Shen,Xingguo Xiao,Hudong Yan,Fei Zha,Haifeng Tian,Xiaohua Tang
Nitrogen doping introduces sulfur vacancies and lattice distortion into In 2 S 3 , which enhances charge separation and provides anchoring sites for Ag species. • Achieves a high H 2 O 2 production rate of 965 μmol g −1 ·h −1 via the 2e − ORR pathway. • DFT reveals Ag single atoms optimize *OOH adsorption; clusters boost electron redistribution. • Exhibits efficient degradation of perphenazine (95% removal within 30 min). • Operates effectively in pure water without sacrificial agents and shows excellent stability. To address the rapid recombination of photogenerated charge carriers in indium sulfide (In 2 S 3 ) and meet the growing demand for efficient photocatalytic hydrogen peroxide (H 2 O 2 ) production systems, this study proposes a rational design. Leveraging active nitrogen species generated from urea decomposition during hydrothermal treatment, we successfully doped the In 2 S 3 lattice to construct a nitrogen-modified indium sulfide (N-In 2 S 3 ) substrate, and subsequently co-anchored silver single atoms and clusters (Ag SA+C /N-In 2 S 3 ) onto it for efficient photocatalytic H 2 O 2 production and pollutant degradation. Nitrogen (N) doping induced sulfur vacancies and lattice distortion, enhancing charge separation and surface reactivity. Ag species were atomically dispersed and firmly anchored onto the N-In 2 S 3 support, serving as efficient electron sinks and active sites. The optimized Ag SA+C /N-In 2 S 3 achieved a remarkable H 2 O 2 production rate of 965 μmol g −1 h −1 in pure water via a predominant two-electron oxygen reduction reaction (2e − ORR) pathway, significantly outperforming pristine In 2 S 3 and N-In 2 S 3 . Combined with experimental characterization and DFT calculations revealed that Ag single atoms optimized the adsorption of the *OOH intermediate and reduced the reaction free energy barrier, while Ag clusters facilitated electron redistribution and enhanced oxygen activation. It also demonstrated superior photocatalytic degradation efficiency for organic pollutant like perphenazine (95% removal in 30 min). This study highlights the synergistic effect of bulk doping and surface atomic-level engineering in developing high-performance photocatalysts for sustainable chemical synthesis and environmental remediation. Download: Download high-res image (140KB) Download: Download full-size image
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Advanced Materials Technologies
·
2026
·
IF 6
Zhen Zhang,Zhengdong Zhang,Junfeng Tong,Jinglong Li,Zhipeng Li
Flexible strain sensors, owing to their stretchability, tunable mechanical properties, and biocompatibility, hold great promise for electronic skin and human-machine interaction devices. However, material and structural limitations often preclude the simultaneous achievement of high sensitivity and a wide detection range, thereby constraining their practical application. In this study, we first used high-frequency ultrasound to develop a Carbon Nanotube/Thermoplastic Polyurethane (CNT/TPU) composite fiber membrane on electrospun TPU, and then printed a conductive silver paste pattern onto its surface to fabricate an Ag/CNT/TPU strain sensor. This sensor features a hierarchical conductive network, comprising a densely packed silver paste layer overlying a CNT-modified TPU fiber network. Benefiting from the synergistic interaction between these two levels, the sensor exhibits a maximum gauge factor of 2711.3, a broad working range of 0%–400%, ultrafast response and recovery times, and excellent long-term stability. Finally, we demonstrated its utility in monitoring human motion, from small-amplitude finger bending to large-range knee flexion, and successfully employed it to drive a complex bionic hand, thereby advancing the use of flexible strain sensors in human-machine interaction applications.
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高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2026
·Vol. 37
·期 19
·1481
·
IF 3.2
Zhang Xiaomin,Qin Mingjun,Tang Weilei,Pang Juan,Lyu Yue,Chen Cheng
Conductive adhesives (ECAs) are critical for advanced electronic packaging, but the high cost of silver fillers limits their widespread application. This study presents a hybrid filler strategy combining silver-coated copper (Ag@Cu) nanoparticles with a low content of silver flakes to achieve high electrical conductivity at reduced cost. The Ag@Cu particles were synthesized via a two-step wet chemical reduction method, yielding a well-defined core–shell structure with a dense silver coating that prevents copper oxidation. A series of ECAs were prepared with silver flakes and Ag@Cu nanoparticles at a fixed total filler loading of 70%. The results demonstrate that the optimal silver flake content is 4%, at which the ECA exhibits the lowest volume resistivity of 3 × 10⁻ 4 Ω·cm. The prominent conductivity improvement stems from synergistic geometric regulation. Low loading silver flakes serve as conductive bridges to fill interparticle gaps and construct hybrid point-to-face contact, verified by SEM. The silver flake composite retains favorable shear strength and thixotropy for screen printing. A circuit test with printed films lit an LED, validating its feasibility for flexible circuits. This work develops low cost, high-performance ECAs using Ag@Cu nanoparticles and silver flakes, achieving a balance between excellent conductivity and reduced material cost.
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高影响因子
Surfaces and Interfaces
·
2026
·
IF 6
Xueying Zhang,Wei Lai,Mengdi Guo
Quality assessment of herbal medicines is complicated by their complex matrices and variability in chemical composition. In this study, a three-dimensional surface-enhanced Raman scattering (SERS) substrate was constructed for the analysis of Astragalus membranaceus extracts. The substrate consists of carboxylated carbon nanotubes (HOOC CNTs) integrated with Ti 3 C 2 T x MXene and decorated with in situ-grown silver nanoparticles (AgNPs), forming an interconnected porous network. This hierarchical architecture provides accessible plasmonic sites, while the CNT–MXene framework improves material dispersion and limits MXene restacking in aqueous media. The AgNP/HOOC CNT/Ti 3 C 2 T x substrate exhibited a measured SERS enhancement factor of 1.82 × 10 6 , together with improved signal uniformity and stability under the tested conditions. Quantitative calibration models were established for astragalosides, polysaccharides, and calycosin in A. membranaceus extracts with limited sample pretreatment, and the analytical results were compared with those obtained using reference methods. The measured chemical profiles also enabled preliminary discrimination among the investigated samples from different geographical origins and assessment of batch-to-batch variation. Among the samples included in this study, those collected from Jilin showed relatively high levels of the target constituents. These results indicate that the proposed SERS substrate has potential as a rapid analytical platform for compositional assessment and comparative quality evaluation of A. membranaceus . Further validation using larger and more geographically representative sample sets is required before the method can be applied to routine origin authentication and quality grading. Download: Download high-res image (370KB) Download: Download full-size image
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