Surfaces and Interfaces
·
2024
·
IF 5.7
Yuqing Xu,Beibei Cui,Xueqin Zhang,Ying Sun,Baoping Lin
The Cu@Ag core-shell particles are the highly anticipated functional materials in electronic applications which are required to be high electrical conductivity, good thermal properties and low cost. However, it remains a challenge to obtain a completely and uniformly coated Ag shell in low silver content. During the coating process, it is essential to regulate the reduction of Ag + on the surface of Cu to ensure uniformly silver shell. We developed a strategy to prepare uniformly coated Cu@Ag particles by employing hydroxy acids as complexing agents with “double-sided adhesive” function. Compared to conventional complexing agents, the employed hydroxy acids can not only coordinate with Ag + but also complex with Cu due to the more carboxyl and hydroxyl groups which act like a “double-sided adhesive”, that can pull Ag + to the surface of Cu, and then accomplish the coating of Ag with replacement and reduction reaction. The impact of different types of hydroxy acids as complexing agents on the coating effect of silver-clad copper powder was investigated when the silver addition was 15 %. Results indicated that the obtained Cu@Ag particles with tannic acid as complexing agent show high coating quality layer with low surface sliver content (11.4 %). Moreover, the obtained Cu@Ag particles exhibit good dispersibility, promising thermal stability and low electrical resistivity (30 μΩ·cm).
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2025
·
IF 3.9
Yiwen Gui,Ao Chen,Yiting Liu,Ning Cai,Jumei Li
A sensitive and stable substrate is crucial in Raman spectroscopic techniques for the effective detection of environmental contaminants. In this study, a novel core–shell composite, Ag@UiO-66, was developed by coating Ag nanospheres with a porous metal–organic framework (MOF), UiO-66-NH2. This composite combines high stability with selective enrichment capabilities for Cr(VI). Leveraging the unique properties of UiO-66-NH2, such as its porosity, abundant amine groups, and Zr nodes, Ag@UiO-66 effectively enriches Cr(VI) through pore-filling, electrostatic interactions, and Zr–O coordination. Direct analysis of water samples spiked with Cr(VI) showed detection limits of 6.53 × 10–8 M in pond water and 7.52 × 10–8 M in lake water. The composite also exhibited excellent signal uniformity and reproducibility, with a low relative standard deviation of 6.78% across 30 batches. Additionally, it demonstrated outstanding recyclability under simulated sunlight irradiation due to the solar photocatalytic properties of UiO-66-NH2. Ag@UiO-66 also showed superior stability compared to pristine Ag nanospheres when exposed to strong acids, bases, or oxidative environments (e.g., 1% H2O2 solution). Overall, Ag@UiO-66 shows great potential as a reliable substrate for the trace detection of chemical analytes via SERS.
✓ 已验证
产品关联
DOI
高影响因子
Food Analytical Methods
·
2025
·
IF 3
Li Congwei,Wang Beibei,Kang Kai,Wang Lanyue,Zhao Zhenzhen,Wang Yuping,Ji Xueping
To address ciprofloxacin (CIP) contamination in animal-derived foods, an ultrasensitive electrochemical sensing platform based on a novel ternary heterostructure (Ag-TiO 2 @Zr-TCBPE) was developed through interfacial engineering. The heterointerface was constructed by anchoring a metal–metal oxide electrocatalyst (Ag-TiO 2 ) onto a conductive metal–organic framework (Zr-TCBPE) with a 3D porous hexagonal prismatic structure and high conductivity. This work demonstrates for the first time that the large-scale conjugated architecture of Zr-TCBPE nanotubes enhances CIP enrichment, while the Ag-TiO 2 /Zr-TCBPE heterointerface optimizes electron transport pathways and synergistically promotes CIP oxidation via interfacial electric field-driven effects. Under acidic conditions (pH 5.0), the Ag-TiO 2 @Zr-TCBPE/GCE sensor exhibited optimal performance: a linear range spanning five orders of magnitude (2.5 nmol·L −1 to 150 μmol·L −1 ), a limit of detection (LOD) of 1.6 nmol·L −1 , surpassing most reported CIP sensors. The sensor also showed high anti-interference capability (97.1–107% signal retention), long-term stability (> 96.4% signal retention after 15 days), and satisfactory recovery rates (91.6–103%) in complex matrices (milk, eggs, and river water). This study provides fundamental insights into TCBPE-MOF heterointerface engineering and establishes a robust analytical platform for detecting trace antimicrobials in food and environmental samples.
✓ 已验证
产品关联
DOI
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2025
·
IF 4.6
Xin Zhao,Shibin Han,Cheng Chen,Xiaoyi Lv,Jiahe Li,Chen Chen
Celecoxib (CXB) is a non-steroidal anti-inflammatory drug used to prevent and treat arthritis. However, overdosing or improper use can cause adverse reactions. SERS is an important tool for therapeutic drug monitoring (TDM).The present study proposes an innovative detection scheme based on SERS deep learning, aiming to achieve qualitative identification and quantitative detection of CXB at the Raman spectrum level. In this paper, a composite SERS substrate consisting of silver (Ag)@ platinum (Pt)@ porous silicon Bragg mirror (PSB) was synthesized. Crystal violet (CV) was used as probe to characterize the substrate properties, and the substrate showed excellent SERS properties and long-term stability. The substrate significantly enhanced the SERS response capacity to CXB, showing excellent reproducibility and high sensitivity. The LOD and the recovery rate were both within the reasonable range when the substrate was used to detect CXB concentration in serum. Three deep learning models, GoogleNet, ResNet and VGG, were used to classify five kinds of blood drug concentrations. Among them, the GoogleNet model based on spectral dataset achieved the highest classification accuracy of 84.17 %. The deep learning-SERS integrated system supports blood drug concentration discrimination, helping doctors personalize treatment strategies for arthritis patients and improving clinical efficiency.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2025
·
IF 7.7
Shixin Huang,Wei Liu,Hailong Lin,Zhicheng Wen,Chunjin Hang,Rong An,Yongfeng Li,Yanhong Tian
The design of materials for the detection of n-butanol at low operating temperatures is of great significance for the reduction of power consumption and the improvement of the safety of the gas sensor. In this study, the solvothermal method and subsequent Ag-loading treatment were employed to synthesise hierarchical flower-like Cu-doped SnO 2 /Ag 2 S heterojunctions decorated with Ag (CSAA). The morphological and structural characterisation demonstrated that the amount of Cu 2+ doping and the duration of electroless Ag plating played a pivotal role in the morphological evolution of the SnO 2 -based hierarchical structure. The optimal CSAA composite exhibits the highest response of 1136 and the shortest response time of 6 s to 50 ppm n-butanol at 80°C, accompanied by superior selectivity, repeatability, humidity and long-term stability. The enhanced sensing performances of the CSAA sensor can be mainly ascribed to the hierarchical porous structure, the doping of Cu 2+ , the construction of SnO 2 /Ag 2 S heterostructures and the decoration of Ag nanoparticles (Ag NPs). Furthermore, the density functional theory simulation was employed to investigate the influence of Ag NPs and Ag 2 S on the adsorption properties and electronic behaviour of n-butanol on the surface of SnO 2 . This work proposes a friendly strategy and theoretical support for enhancing the sensing performance of MOS sensors in the practical detection of n-butanol.
✓ 已验证
DOI
高影响因子
ACS Applied Polymer Materials
·
2025
·
IF 4.7
Qiaoqiao Liu,Zihao Luan,Xin Shi,Yinxiao Zhu,Zheliang Nie,Bingcheng Ge,Shuyan Gao
Leveraging the superior conductivity and stretchability of hydrogels to promote their application in flexible electronic devices represents an effective approach to advancing the field of flexible sensors. Starch-based hydrogels, which possess advantages such as biodegradability, biocompatibility, and nontoxicity, are highly desirable for flexible sensors. However, the numerous hydrogen bonds within starch chains and the poor dispersibility of conductive materials in the hydrogel restrict the balance between stretchability and conductivity, posing a significant challenge in the development of flexible sensors. Herein, a multinetwork structure is designed to prepare a potato starch (S–S)/poly(vinyl alcohol)/N-isopropylacrylamide/carboxymethyl cellulose-Ag nanowires1.5 (PTS/PVA/NIPAM/CMC-Ag1.5) hydrogel material featuring favorable stretchability (1343% elongation) and conductivity (1.6 S/m). Functionally, the multinetwork and reversible dynamic bonds enable the PPNC-Ag1.5 hydrogel to achieve high self-healing efficiency (up to 90%) and recyclability. Antimicrobial tests show that the PPNC-Ag1.5 hydrogel exhibits excellent inactivation of Escherichia coli and Staphylococcus aureus, with sterilization rates of 99.44% and 91.91%, respectively. Furthermore, the PPNC-Ag1.5 hydrogel is used to develop strain/temperature sensors that exhibit high sensitivity to strain (gauge factor, F = 1.3) and temperature (temperature coefficient of resistance, TCR = 2.5%/°C). This strategy overcomes the trade-off between strain and electrical properties of starch-based hydrogels, thereby demonstrating significant potential for applications in the fields of fever monitors and motion monitors.
✓ 已验证
产品关联
DOI
高影响因子
FOOD CONTROL
·
2021
·
IF 5.548
Peifang Chen,Chenbiao Li,Xiaoyuan Ma,Zhouping Wang,Yin Zhang
Aflatoxin B1 (AFB1) has the strongest carcinogenesis and mutagenesis effects. Herein, a novel ratiometric surface-enhanced Raman scattering (SERS) aptasensor based on graphene oxide (GO) as a corrective internal standard (IS) and signal amplifier was constructed for reliable detection of AFB1. 4-Mercaptobenzoic acid as Raman reporter embedded in [email protected] core-shell nanoparticles and AFB1aptamer conjugated to the Ag shell acted as the signal probes ( [email protected] NPs-AFB1apt). AFB1apt was attached to the surface of GO with Raman signals modified Au NPs/Indium tin oxide glass (GO/Au NPs/ITO) via π–π stacking interaction, facilitating further amplification of the signal. With an increase of AFB1 concentration (0.0001 ng/mL–100 ng/mL), the probes were released owing to the affinity of aptamers, causing the decreased 4-MBA intensity (I 4-MBA ) and unchanged GO intensity (I GO ). Therefore, the quantitative test was achieved based on the ratiometric value (I 4-MBA /I GO ) . A good negative correlation (R 2 = 0.992) was achieved and the limit of detection (LOD) was as low as 0.1 pg/mL, proving the proposed sensor can become an efficient analytical tool and shows a bright application prospect in the food detection field.
✓ 已验证
DOI
高影响因子
Nanoscale
·
2025
·Vol. 17
·期 37
·21665-21678
·
IF 5.1
Junhao Xie,Hongxu Liu,Shulin Sun
Electronic capacitor films based on polymer matrices and inorganic nanofillers capable of storing more energy play a crucial role in advanced modern electrical industries and devices. Herein, a series of nanocomposite films composed of “core–shell–dot” BNNs-PDA@Ag hybrid structures with multiple breakdown strength enhancement mechanisms as fillers and methyl methacrylate-co-glycidyl methacrylate (MG) copolymers as matrices were successfully synthesized. The introduced 2D and wide-bandgap BNNs not only enhanced the breakdown strength by taking advantage of their excellent physical properties, but also further improved their energy storage properties both at ambient and elevated temperatures through the formation of deeper traps at the organic–inorganic interface. In addition, especially under a strong electric field, the Coulomb-blockade effects of Ag nanoparticles immobilized by a PDA shell layer in the heterostructure of BN nanosheets avoided the breakdown. Ultimately, the energy density of 2.0 BNNs@PDA-Ag nanocomposite films was 9.35 J cm−3 at 640 MV m−1 and room temperature with considerable efficiency (86%) under multiple breakdown strength enhancement mechanisms. Even at 90 °C and 120 °C, it still maintained energy densities of 5.46 J cm−3 and 4.32 J cm−3 with efficiencies of 84.79% and 76.81% under 460 MV m−1 and 380 MV m−1, respectively.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2022
·
IF 9.231
Chen Chen,Ximo Wang,Yingfang Zhang,Xingying Li,Huiju Gao,Geoffrey I.N. Waterhouse,Xuguang Qiao,Zhixiang Xu
Herein, a molecularly imprinted surface-enhanced Raman spectroscopy (SERS) sensor was developed for the selective capture and sensitive detection of tryptamine in foods. The SERS sensor exploited silver nanoparticle-decorated TiO 2 (TiO 2 @Ag) substrates for Raman signal enhancement via synergistic effect of electromagnetic enhancement and photoinduced charge-transfer, whilst surface functionalization with the molecularly imprinted polymer ensured selective tryptamine capture. The SERS spectrum of tryptamine on the sensor closely matched that predicted by density functional simulations. The SERS intensity for tryptamine on the developed TiO 2 @ [email protected] sensor increased linearly with the logarithm of the tryptamine concentration over the range of 10 −6 –10 −2 mol L −1 , with a LOD of 4.85 × 10 −7 mol L −1 . Tryptamine was detected in a spiked white vinegar sample, and its recoveries were in the range of 92.00%–111.40%. The SERS sensor could be used for the detection of tryptamine in actual samples.
✓ 已验证
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Zhixin Liu,Yongdi Liu,Xianbo Sun,Haodong Ji,Wen Liu,Zhengqing Cai
A novel Z-scheme Ag/AgVO 3 /carbon-rich g-C 3 N 4 heterojunction with excellent solar-light-driven photocatalytic activity was constructed via a facile hydrothermal-calcining method. The Ag/AgVO 3 /carbon-rich g-C 3 N 4 composites displayed superior performance for the photocatalytic degradation of sulfamethiadiazole (SFZ) under solar irradiation. The optimal composite with a 10 wt% Ag/AgVO 3 content showed the highest photocatalytic activity, its degradation rate constant ( k ) for SFZ degradation was ∼13 and 30 times than that of carbon-rich g-C 3 N 4 (CCN) and Ag/AgVO 3 , respectively. Furthermore, •O 2 – was identified as the most crucial reactive species in the Z-scheme photocatalysis system. The greatly improved photocatalytic activities are derived from the built-in electric field (BIEF) of CCN and efficient Z-scheme charge transfer with Ag nanoparticles as charge transmission-bridge. The possible photocatalytic degradation mechanism and pathway over Ag/AgVO 3 /carbon-rich g-C 3 N 4 were proposed based on LC-MS analysis and density functional theory (DFT) calculation, and the toxicity of intermediates was evaluated by Quantitative structure–activity relationship (QSAR) based prediction. In summary, this work provides new insight into constructing highly efficient Z-scheme photocatalyst, which is promising for implementation in surface water remediation.
✓ 已验证
DOI
高影响因子
Materials Research Express
·
2019
·Vol. 6
·期 6
·065515
·
IF 1.449
Xialin Peng,Yonggang Zhang,Ying Liu
Noble metal Ag nanoparticles were deposited on Ag3PO4/P25 heterojunction structure by ultraviolet (UV) light induction to construct Ag/Ag3PO4/P25 double heterojunction catalyst for efficient decomposition of phenacetin (PNT). X-Ray Diffraction (XRD), x-ray photoelectron spectroscopy (XPS), Raman and photoluminescence (PL) spectroscopy analyses were employed to evaluate the microstructure, chemical structure and photocatalytic activity of synthesized catalyst materials. PL spectroscopy analyses revealed that a considerable enhancement in photochemistry activity of Ag3PO4/P25 due to the deposition of Ag. The effects of Ag3PO4 mass ratios, operating conditions on PNT degradation and catalyst stability were also investigated. Results showed that Ag/10% Ag3PO4/P25 under the operating conditions of catalysts concentration of 0.5 g L−1 and pH of 9.0 with UV light irradiation displayed a better photocatalysis degradation performance. When the concentration of PNT was 20 mg L−1, the removal rate of PNT and TOC obtained from Ag/Ag3PO4/P25 system were up to 97 % and 83%, respectively. The removal rate of PNT drops from 97% to 85% between the first and last cycles after 60-min conversion. Ag/Ag3PO4/P25 with a high catalytic reaction efficiency was ascribed to the deposition of Ag. Ag is an electron acceptor and Ag3PO4 have excellent electron conductivity in a heterostructure, the novel Ag/Ag3PO4/P25 composite catalyst could reduce the recombination rate of electron-hole pairs and prolong the lifetime of photogenerated electrons.
✓ 已验证
DOI
高影响因子
ENVIRONMENTAL POLLUTION
·
2018
·
IF 4.358
Zhiqiang Zheng,Guining Lu,Rui Wang,Kaibo Huang,Xueqin Tao,Yulu Yang,Mengyao Zou,Yingying Xie,Hua Yin,Zhenqing Shi,Zhi Dang
Surfactants are known to enhance the degradation of halogenated organics by nanoscale zerovalent iron (n-ZVI) or n-ZVI-based bimetallic particles, but the mechanism of the promotion is not well understood. In this study, we used nanoscale Ag/Fe particles (n-Ag/Fe) to degrade 2,2′,4,4′-tetrabromodiphenyl ether (BDE-47) in different surfactant solutions. The results show that the nonionic surfactant TX-100 had the best promoting effect, which might be attributed to the decrease in particle agglomeration and improvement of mass transfer efficiency after the adsorption of TX-100 on n-Ag/Fe. The distribution analysis of BDE-47 in solid and liquid phases indicates that when the concentration of TX-100 in aqueous solution was above critical micelle concentration, BDE-47 started to dissolve in the liquid phase. Thus, TX-100 micelles can enhance the mass transfer efficiency of BDE-47. However, a too high concentration of TX-100 (above 1.0 mM) would influence the promotion effect of BDE-47 degration, which might be attributed to the excessive and thicker micelles of TX-100 hindering the contact between BDE-47 and n-Ag/Fe. We also studied the degradation pathway of BDE-47 and its products, and found that surfactants did not change the degradation pathway of BDE-47.
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）