SENSORS AND ACTUATORS B-CHEMICAL
·
2026
·
IF 8.3
Kun Xu,Kefang Tian,Min Zhang,Yongguang Yin,Chuanyong Jing,Yong Cai
Gaseous methylarsines (monomethylarsine, MMA; dimethylarsine, DMA; and trimethylarsine, TMA) are toxic and widespread in the environment. Traditional off-site methods for analyzing gaseous methylarsines are not suitable for field deployment, and the integrity of these gases may be compromised during sample collection, preservation, and transportation. The development of on-site gaseous methylarsine detection techniques is crucial and urgent for understanding the biogeochemical cycle and associated risk of arsenic. Here we present a portable device designed for in-field detection of gaseous methylarsines, composed of a portable Raman spectrometer, an air pump, and a substrate for surface-enhanced Raman spectroscopy (SERS). The substrate was prepared conveniently by loading silver dendrites onto the surface of a copper mesh via a Cu-Ag substitution reaction, allowing specific adsorption of gaseous methylarsines based on the Ag-As interaction. Based on density functional theory (DFT) calculations, we found that the adsorption energies of methylarsines on the Ag(111) surface ranged from −0.28 to −0.50 eV, indicating thermodynamically favorable adsorption. The favorable adsorption energy is attributed to the hybrid coupling between the As and Ag orbitals near the Fermi level, with the interaction strength increasing with the degree of methylation. With the portable SERS device, the limits of detection for MMA, DMA, and TMA gases were 0.11, 0.10, and 0.09 mg/m 3 (as As), respectively. Real gas samples from the Yangbajing Hot Spring on the Tibetan Plateau were typically analyzed on-site, and TMA was detected at 30.28 mg/m 3 (as As). The result was validated using traditional liquid chromatography-hydride generation-atomic fluorescence spectroscopy (LC-HG-AFS) analysis.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Research and Technology-JMR&T
·
2026
·
IF 7.3
Qinghua Zheng,Wei Zhou,Zhihao Ji,Qian Gao,Xiaolu Wang,Pengrong Lin,Fu Guo
Nano-solder pastes have been proven to be used as a bonding material for power electronics packaging. Especially, the Ag-coated Cu nanoparticles (Cu@Ag NPs) solder paste is gradually becoming a potential candidate. Herein, the innovative structure of Cu@Ag micro-nano mixed particles (Cu@Ag MNPs) is fabricated in the same reaction system. It is found that the nanoparticle and microparticle sizes are dominated by the interaction of multiple parameters. The PVP molecular weight (MW) can mainly control the nanoparticle size by the steric hindrance effect. The reaction time ( t ) can mainly regulate the microparticle size by the particle growth time. The reaction temperature ( T ) can mainly control the microparticle size by the nucleation rate. Besides, based on the observation of in-situ TEM, the sintering behaviour of the Cu@Ag MNPs mainly includes particle connection, void evolution, coarsening, and smoothness in this work. The sintering mechanism includes the atom flow on the surface of the particle, grain boundary diffusion, and Ostwald ripening. Consequently, Cu@Ag MNPs solder paste obtained the lowest porosity and the highest shear strength of Cu-Cu joints compared to the Ag NPs and Cu MPs solder paste at 250 °C and 300 °C without pressure in the air condition. Accordingly, this work clarifies the fabrication mechanism and sintering behaviour of the Cu@Ag particles, which provides a facile strategy and theoretical basis for the development of power electronics packaging.
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2026
·
IF 10.4
Xingxing Zeng,Dongnan Zhang,Simin Chen,Xiaozi Huang,Zhenxia Zhao,Xin Li,Baoyu Liu
Rapid and accurate detection of bioactive phenolic compounds in food is crucial for assessing nutritional value and ensuring quality. Gallic acid (GA) is a naturally occurring polyphenolic compound found in plant-based foods such as grapes, mangoes, and tea leaves. It possesses significant antioxidants, antibacterial, and anticancer properties, making it a key target in research on food nutrition and functional components. However, many sensors are limited by slow surface dynamics, so the development of advanced sensing materials is a great challenge. In this study, a high specific surface area MEL zeolite (MEL) is prepared (471.24 m 2 g −1 ) and complexed with highly conductive Ag species and two-dimensional MXene nanosheets (MXene) to construct a novel screen-printed sensing platform (MXene/Ag/MEL/chitosan (CS)/screen-printed electrode (SPE). The novel sensor notably possessed excellent GA detection performance, exhibiting an extremely low limit of detection (LOD = 0.5 μM) and a wide detection range (1 μM-50 mM). Further, a portable GA sensing system is prepared by integrating the above screen-printed platform with miniaturized circuits, which showed similar analytical results to the standard high-performance liquid chromatography (HPLC) method (the recovery rate ranges from 95.75% to 97.93%). This work not only presents advanced sensing material but also provides a practical and convenient platform for rapid food analysis and dietary assessment.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
TALANTA
·
2026
·
IF 6.7
Yuwei Wang,Ziyu Zhu,Shan Nan,Chen Hu,Axin Liang,Jiangjiang Zhang,Aiqin Luo
Exploring novel luminophores and co-reactant accelerators to enhance electrochemiluminescence (ECL) performance represents a cutting-edge academic research. In this study, a new of ECL system based on copper nanowires (CuNWs) was proposed, which successfully achieved enhanced ECL performance of CuNWs. Specifically, NH 2 –Ag-coated copper nanowires (NH 2 –Ag@CuNWs) were fabricated as a quasi-three-dimensional luminescent composite that integrated both a luminophore and a co-reactant accelerator, distinguished by a low trigger potential of −0.7 V. The NH 2 –Ag@CuNWs composite lumophore not only protect the excellent luminescent properties of CuNWs, but also leverages NH 2 –Ag as an accelerator for the CuNWs/K 2 S 2 O 8 system, shortening the distance required for redox reaction. The dual catalytic effect of the amino groups and Ag promoted the generation of intermediate free radicals from sulfate anions, accelerating electron transfer kinetics and redox reaction rates, while effectively enhancing and stabilizing the luminescent response. Combining the high affinity and selectivity of molecularly imprinted polymers (MIPs), a molecularly imprinted electrochemiluminescence sensing (MIECLS) platform was further developed for ultra-sensitive detection of alpha-fetoprotein(AFP). Under optimized experimental conditions, the detection range of the MIECLS was 10 fg mL −1 to 100 ng mL −1 , and the limit of detection was 1.10 fg mL −1 . This work not only provides a promising strategy for precise detection of AFP in complex matrices, but also proposes new strategies for improving the performance of CuNWs, expanding its applications.
✓ 已验证
DOI
PubMed
高影响因子
Laser & Photonics Reviews
·
2026
·
IF 9.7
Yangdong Xie,Songtao Hu,Jiling Xu,Bingshuai Zhou,Yaqi Cui,Zhifang Wang,Yunyang Li,Lin Xu,Jiao Sun,Biao Dong
Surface-enhanced Raman scattering (SERS) faces limitations in its spatial detection range (the “SERS skin depth”) and a trade-off between performance and fabrication simplicity. Here, we propose an opal photonic crystal (OPC)-guided spatial-range SERS detection strategy. This approach synergistically integrates the electromagnetic enhancement of plasmonic nanostructures with the wide-range localized field regulation capability of an OPC to construct a novel hybrid substrate (OPC@Ag NL). The substrate is fabricated by depositing an adjustable silver nanolayer (Ag NL) onto a water-stable, self-assembled OPC template with a tunable PBG. This design synergizes plasmonic enhancement with the OPC's ability to modulate excitation laser, generating an expanded localized field that suppresses electric field decay. Consequently, significant SERS enhancement is maintained up to 300 nm from the surface, enabling 3D Raman imaging of macrophages. The substrate demonstrates high sensitivity (detection limit: 10 − 1 1 m for 4-MBA, EF: 1.7 × 10 7 ) and uniformity (RSD < 5.8%), achieving bacterial detection limits of 10 CFU/mL (labeled) and 10 2 CFU/mL (label-free). This work marks a paradigm shift from hotspot engineering to macroscopic field modulation for overcoming SERS spatial constraints.
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.6
Xing Wang,Jian Zhao,Xuening Duan,Yujie Ma,Yong Liu,Yu Xia,Yuhua Feng
To synthesize hybrid nanostructures, precise structural control holds promise to modulate their physicochemical properties. Interestingly, due to the close physico-chemical nature and Galvanic Replacement (GR) between Au ions and Ag, the fabrication of Ag-Au Janus-like structures by growing Au on Ag free of GR is challenging. In this work, in the growth of Au on AgNR seeds, through employing the Na₃Au(SO₃)₂ complex as precursor to inhibit GR and the MBIA ligand as surface energy tuning agent to induce anisotropic growth, the GR-free growth of Au-Island on AgNR was successfully achieved. More interestingly, GR-free site-specific growth of Au-Islands on the entire surface, both tips, and single tip of AgNRs was also realized by varying the concentration of MBIA or the amount of AA reductant, demonstrating the excellent feasibility in synthetic control. These AgNR–Au Janus-like structures exhibit tunable localized surface plasmon resonance (LSPR) across the UV–Vis-NIR range and strong surface-enhanced Raman scattering (SERS) signals, making them promising candidates for LSPR- and SERS-based applications. Our synergistic ligand-mediated structure control strategy can be extended to other bimetallic systems, thus enabling the construction of sophisticated heterostructures with enhanced or new properties for various applications.
✓ 已验证
DOI
PubMed
高影响因子
European Journal of Wood and Wood Products
·
2026
·Vol. 84
·期 2
·48
·
IF 2.7
Qi Feicui,Huang Quanfei,Huang Yanhui,Sun Xiaoting,Liu Zhi,Zhang Zongling,Liu Liyan,Yan Xueying,Tian Jun,Huang Luyi
Bamboo is a naturally-optimized composite material, but it is prone to deformation, cracking, mildew, and decay. The application of coatings with both mildew and decay resistance can provide long-term protection for bamboo, but bamboo lacks transverse cells and contains few fiber cell cavities and pits, leading to poor coating adhesion. This study subjected Phyllostachys edulis ( P. edulis ) and Neosinocalamus affinis ( N. affinis ) substrates to hygrothermal pretreatment to enhance the adhesion of coatings applied to them. A novel nano-Ag/SiO 2 -modified water-based coating with excellent dispersibility and thermal stability was applied to the surface of the pretreated bamboo strip substrates. The adhesion of the coating reached the highest level (Grade 0, no coating detachment), and its initial and maximum peel forces increased by 53.8% and 41.1% after hygrothermal pretreatment, respectively. Upon increasing the nano-Ag/SiO₂ content, the thickness, adhesion, hardness, scratch resistance, resistance to heating-cooling cycles, and mildew/decay resistance of the water-based coating improved. After the mildew resistance tests, the infection level of the samples decreased from Grade 3 (1/2–3/4 of the surface) to Grade 0 (No visible hyphae), while the discoloration level decreased from Grade 4 (severe surface and internal discoloration) to Grade 1 (minor surface discoloration) after soil burial tests. The weight loss rate, gloss reduction, and color difference of the surface also decreased after both tests. The results showed that the water-based coating modified with 2 wt% nano-Ag/SiO 2 exhibited the best dispersion uniformity, abrasion resistance, and minimal color difference, providing the best decorative and protective performance for the bamboo. The coating extended the service life of bamboo and enhanced its applicability in high-humidity indoor environments and harsh outdoor conditions.
✓ 已验证
产品关联
DOI
高影响因子
Surfaces and Interfaces
·
2026
·
IF 6
Anh-Tuan Pham,Dang Thi Hanh Trang,Ngo Thi Loan,Nguyen Thai Huy,Nguyen Ha Anh,Ta Ngoc Bach,Quan-Doan Mai,Anh-Tuan Le
Styrene is one of the most important volatile organic compounds (VOCs) used extensively in polymer and composite manufacturing, where occupational exposure occurs predominantly through inhalation of its vapor. Although surface-enhanced Raman spectroscpoy (SERS) offers exceptional sensitivity for molecular analysis, its application to vapor-phase detection remains challenging because volatile molecules are difficult to efficiently accumulate at plasmonically active sites. Consequently, conventional styrene vapor analysis generally relies on multistep workflows involving vapor sampling and analyte desorption prior to analysis. Herein, we report a flexible Cellulose/ZIF-8/Ag SERS chip combined with a simple attach-and-capture strategy for direct solvent-free detection of styrene vapor. By attaching the SERS sensing chip to the inner surface of a vial cap, vapor sampling and SERS detection were integrated into a single workflow without additional sample pretreatment. The developed SERS platform achieved a detection limit of 240 mg/m 3 , below current occupational exposure limits for styrene, together with excellent analytical reliability (RSDs of 1.89% within a single chip and 5.29% between independently fabricated chips), good selectivity for styrene, stable performance under high relative humidity, robust SERS activity after repeated mechanical deformation, and outstanding post-sampling signal stability. By separating passive vapor accumulation from subsequent spectroscopic analysis, the attach-and-capture configuration enables the chip to be deployed in advance and retrieved for rapid on-demand SERS readout, offering operational flexibility beyond conventional multistep sampling workflows. These findings establish the proposed attach-and-capture strategy as a practical analytical workflow for integrating vapor sampling and SERS detection into a single solvent-free operation for rapid occupational monitoring of styrene vapor. Download: Download high-res image (171KB) Download: Download full-size image
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2026
·
IF 7.8
Hui Gao,Yunzhu Liu,Fan Bai,Chunsong Li,Lingxiu Li,Zhongyuan Liu,Shixian Zhang,Yifeng Li
Electrochemical CO2 reduction represents a sustainable negative carbon technology, yet its widespread application is hindered by sluggish reaction kinetics, particularly in the initial adsorption and activation of CO2─the rate-determining step. Herein, we report an inverted Ag-based catalyst architecture in which CeO2 nanoparticles are supported on metallic Ag, creating abundant CeO2/Ag interfaces. These interfaces facilitate the formation of oxygen vacancies at CeO2/Ag interfaces under reductive conditions while maintaining high electrical conductivity through the metallic Ag matrix. Kinetic analyses and density functional theory reveal that these interfacial oxygen vacancies significantly enhance the CO2 activation and lower the activation barrier, thereby accelerating the overall CO2RR kinetics. In situ Raman and attenuated total reflectance surface-enhanced infrared absorption spectroscopy directly confirm the generation and dynamic behavior of oxygen vacancies during electrolysis. Notably, alternating atmosphere experiments demonstrate reversible consumption and regeneration of oxygen vacancies upon exposure to CO2 and inert gas, providing compelling evidence that oxygen vacancies actively participate in CO2 activation. This work highlights the critical role of engineered metal–oxide interfaces and defect engineering in enhancing electrocatalytic CO2 conversion.
✓ 已验证
DOI
PubMed
高影响因子
MICROCHIMICA ACTA
·
2026
·Vol. 193
·期 6
·384
·
IF 5.4
Xu Ziyu,Cao Jinru,Wang Ying,Chen Tingsha,Wang Yue,Xu Huaqiu,Zeng Huihui,Huang Wenyi,Cheng Hao,Kong Hongxing,Lu Yao,Feng Jun
Human carboxylesterase 1 (hCE1) is a serine hydrolase that is distributed widely in the human liver, intestines, and various tumour tissues. It has now become a biomarker associated with diseases such as cancer. Consequently, the measurement of hCE1 levels in human serum is of significant importance for the diagnosis and assessment of these diseases. The present study involved the preparation of Ag/CQDs/ZIF-8 nanocomposites, which incorporated silver nanoparticles (Ag NPs) and carbon quantum dots (CQDs) into the ZIF-8 framework. The combination of this composite with an enzyme-linked immunosorbent assay (ELISA) and the utilisation of benzidine as the signal molecule resulted in the development of a fluorescence (FL)/surface-enhanced Raman scattering (SERS) dual-mode sensor, which was employed for the sensitive detection of hCE1 in serum. This dual-mode sensor combines the advantages of both FL and SERS technologies, demonstrating excellent selectivity and stability, and enhancing the accuracy and reliability of quantitative measurements. The limits of detection (LOD) for the FL mode and SERS mode were determined to be 0.1 and 0.072 ng·mL − 1 , respectively, with the recoveries ranging from 92.44% to 117.47%. The satisfactory outcomes obtained from testing on real sample confirm the sensor’s excellent suitability for use in complex biological matrices. Consequently, this dual-mode sensor shows considerable promise for the detection of biomolecules in clinical samples, thereby demonstrating significant potential for clinical applications. Graphical abstract The alternative text for this image may have been generated using AI.
✓ 已验证
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Nisha Singh,Siva Sankar Nemala,Saleem Raza,Zian Mao,Chengjie Wang,Pantrangi Manasa,Andrea Capasso,Zhiming Wang,Liguo Shen
Plasmonic TiB₂@Ag composite dip-coated fabric enables multifunctional smart textiles. • Hierarchical micro-nano asperities impart superhydrophobicity (WCA > 160°) with broad solar absorption. • Rapid photothermal de-icing at −20 °C within 83 s and prolonged freezing delay (∼612 s). • Surface temperature reaches ∼79 °C under 1 sun with ∼72% de-icing efficiency. • Durable, breathable fabric exhibits ≥90% bacterial anti-adhesion with good biocompatibility. Developing ice-resistant, multifunctional fabrics for cold, humid environments remains challenging, particularly in achieving high photothermal efficiency, superhydrophobicity, bacterial anti-adhesion, and mechanical durability without compromising breathability and flexibility. Herein, we report a titanium diboride @ silver (TiB 2 @Ag) composite coating deposited on a nonwoven fabric via a simple dip-coating approach for photothermally driven anti-icing and de-icing performances at low temperatures. The resulting coating surface exhibits hierarchical micro-nanostructured asperities, formed by TiB 2 nanosheets decorated with Ag nanoparticles within a hydrophobic polymer matrix, imparting an excellent anti-wetting surface (water contact angle >160°). The incorporation of plasmonic Ag nanoparticles, combined with strong broadband solar absorption (>90% across 300–2500 nm), synergistically enhances the photothermal conversion performance. Therefore, the functional fabrics show a substantial freezing delay (∼612 s) and rapid de-icing at −20 °C within 83.2 s, achieving a de-icing efficiency of 72%. Under 1 sun irradiation, the surface temperature rises to ∼79 °C within 600 s. The coating also demonstrates excellent bacterial anti-adhesion ability (≥ 90% reduction against E. coli and S. aureus ) with minimal cytotoxicity (>99% cell viability). Importantly, the coated fabrics retain superhydrophobicity (>155°) after repeated sandpaper abrasion and washing cycles, indicating strong coating durability. This fabric exhibits appreciable mechanical resilience (32 MPa at 20% strain, stable after 300 bending cycles) and chemical stability while maintaining flexibility and air permeability for long-term durability. This work provides an effective strategy for designing durable multifunctional textiles with enhanced photothermal anti-icing/de-icing performance for operation in cold environments. Download: Download high-res image (335KB) Download: Download full-size image
✓ 已验证
DOI
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2026
·
IF 5.9
Yi Li,Jing Zhang,Jing Shao
Antibiotics are widely used in the treatment of various diseases in humans and animals, and the detection of metabolic residual antibiotics has become an important research task. Flexible surface-enhanced Raman scattering (SERS) substrates are in great demand for sensitivity and specificity detection of antibiotics. Herein, we constructed a surface-enhanced Raman scattering-molecular imprinting polymer sensor (SERS-MIP) consisting of polyvinyl chloride (PVC) membrane loaded with silver nanoparticles and molecular imprinting layer. The surface of PVC was aminated by nucleophilic substitution reaction as a carrier for the formation of silver nanoparticle. The molecular imprinting method of atom transfer-electron transfer radical polymerization was used to realize the controlled growth of polymer for constructing SERS-MIP sensor, and its detection capability for ciprofloxacin reached 10 −9 M. Simultaneously, the stability, uniformity, reusability, and selectivity of the sensor all showed good performance. The characteristic peaks of ciprofloxacin were still visible in the mixed solution with other interferents. The results indicated that SERS-MIP sensor could realize sensitivity and specificity detection in complex environment.
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）