Journal of Environmental Chemical Engineering
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2026
·Vol. 14
·期 3
·122528
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IF 7.5
Yu Gao,Linan Zhou,Qingqing Peng,Tingting Cui,Ziyi Guan,Fang Zhang,Li Wang,Huiyi Yang,Fang Chai
Multiple trace heavy metal pollutants present a serious threat to both the environment and ecosystems, and their coexistence also affected the detection efficiency. Therefore, multi-mode responsive optical probes with versatile application prospects for optical sensing are highly desired. Here, yellow-emissive carbon dots (Y-CDs) with aggregation-induced emission (AIE) characteristics were fabricated via a hydrothermal approach, boasting a absolute quantum yield of 13.88% and a fluorescence lifetime of 8.55 μs. Leveraging the AIE behavior and quenching effect, Y-CDs were successfully achieved the multivariate detection of Ag + , Hg 2+ separately, and further realized cascade sensing BSA, with detection limits of 5.59 μM, 7.7 nM, and 0.9 μM respectively. Subsequently, a portable smartphone-based sensing platform was developed to facilitate rapid on-site analysis, and a logic gate was designed to expedite integration into intelligent devices. Furthermore, Y-CDs demonstrated remarkable antibacterial action via in vitro antibacterial assays, displaying significant inhibitory effects against both E. coli and S. aureus , providing the possibilities for testing in the food and medical fields with high standards of hygiene permits. With their exceptional multifunctional sensing capabilities, Y-CDs were expected holding extensive promising application prospects in the realm of real-time monitoring of environmental and food safety.
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RSC Advances
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2026
·Vol. 16
·期 19
·17393-17400
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IF 6.1
Lihua Zhang,Jiang Li,Tengyan Gao,Wei Liu,Zirui Zhang,Zezhong Chen,Feng Feng
Heavy metal ion contamination poses a serious threat to human health and ecological balance, emphasizing the need for sensitive detection methods to maintain water quality and safeguard public safety. To meet this challenge, an integrated quantitative detection platform based on smartphone image capture and a built-in RGB color analysis app, following a “one-stone-three-birds” strategy, was developed. It allows for rapid, sensitive, and on-site detection of silver ions (Ag(I)) in actual water samples. In the presence of Ag(I) ions, the aggregation of AuNPs with ammonium thioglycolate (ATG), which acts as a multifunctional agent (an aggregation inducer, charge modulator, and recognition unit), is inhibited, resulting in a notable hypsochromic shift in the surface plasmon resonance (SPR) spectrum of AuNPs and a color change from gray-blue to pink-red, depending on the target level. Quantitative analysis is performed by measuring the color signal intensity of AuNPs after adding Ag(I) ions with a smartphone equipped with an RGB color detector. The detection mechanism was verified further through transmission electron microscopy (TEM), dynamic light scattering (DLS), and UV-Vis spectrophotometry (UV-Vis). The smartphone-integrated detection method exhibited a linear range of 0.1 to 8 µM and a detection limit of 10.4 nM. Results from this platform, paired with a smartphone, were validated against data from atomic absorption spectrometry (AAS). This smartphone-based detection approach offers the benefits of simplicity, speed, and low cost, making it suitable for environmental monitoring of Ag(I) ions.
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2026
·
IF 9.1
Chang Liu,Xing Luo,Guowang Shen,Fengfeng Gao,Xueli Huang,Xueying Wang,Qinglong Luo
Ag NPs@Cu-ZIF-8: ZIF-8 modified by partial Cu 2+ doping and Ag NPs loading. • The electrode maintains 128.2 mg・g −1 capacity after 10 Br − cycles. • At optimal conditions, the electrode achieves 147.2 mg·g −1 maximum Br − capacity. • DFT proves Cu 2+ -Ag modification enhances Br − adsorption. Bromide ions (Br − ) are finite and non-renewable strategic resources, and their highly selective recovery is of great significance for the sustainable utilization of brine resources and ecological environmental protection. To address the shortcomings of conventional adsorbents such as poor electrical conductivity and insufficient active sites, an Ag NPs@Cu-ZIF-8 composite was successfully constructed via a synergistic modification strategy involving copper framework doping and silver nanoparticle loading in this study. The composite not only retains the inherent porous structural advantages of ZIF-8 but also effectively overcomes its poor electrical conductivity. Systematic material characterizations combined with density functional theory (DFT) calculations were employed to reveal the microscopic adsorption mechanism of the composite toward Br − in aqueous solution. The results demonstrate that the introduction of silver nanoparticles significantly enhances the electrical conductivity of the material and provides abundant active adsorption sites for Br − capture. Electrochemical test results reveal that the Ag NPs@Cu-ZIF-8 membrane electrode achieves a maximum bromide adsorption capacity of 147.2 mg·g −1 under optimal experimental conditions. The adsorbed bromide can be converted into elemental bromine through extraction, realizing efficient resource recovery. Cycling experiments indicate that the adsorption capacity only drops from 139.7 mg·g −1 to 93.5 mg·g −1 after ten adsorption-desorption cycles under conventional conditions, which reflects outstanding cycling stability. This material presents prominent advantages for the green and efficient recovery of bromine resources. Download: Download high-res image (104KB) Download: Download full-size image
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FOOD CHEMISTRY
·
2026
·
IF 10.4
Wenlong Liao,Juan Wu,Qian Long,Ying Zhu,Junling Shao,Yue Ma,Qiuzuo Shen,Huiming Li,Lingpu Jia,Kunping Liu
A MoS 2 @Ag nanoflower SERS substrate with 1T/2H mixed-phase is synthesized. • The prepared substrate achieving a high SERS enhancement factor of 1.76 × 10 8 . • The Transformer network achieved 99.82% classification accuracy for four antibiotics. Fluoroquinolone antibiotics (FQs) residues in dairy products pose a persistent challenge to food safety. This work establishes an integrated analytical platform combining a three-dimensional molybdenum disulfide‑silver nanoflower (MoS 2 @Ag NFs) SERS substrate with a transformer network based deep learning model for the sensitive detection and intelligent classification of FQs in milk. The prepared MoS 2 @Ag NFs substrate with a 1T/2H mixed-phase MoS 2 and a hierarchical structure densely decorated with silver nanoparticles (Ag NPs), exhibits a high enhancement factor and achieves nanomolar-level detection limits for four representative FQs. To overcome the discrimination challenge posed by the highly similar spectral signatures of different FQs, a transformer network is employed to automatically extract decisive spectral features via its self-attention mechanism, which results in an exceptional classification accuracy exceeding 99.82%. The integrated platform enables sensitive and intelligent monitoring of FQs in milk, providing a promising strategy for on-site detection of antibiotic residues in complex food matrices. Download: Download high-res image (125KB) Download: Download full-size image
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MICROCHEMICAL JOURNAL
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2026
·
IF 5.2
Qianqian Yu,Jingxiao Yu,Qing Yang,Da-Wen Sun,Hongbin Pu
A novel chiral hierarchical porous ZIF-8/Au@Ag bipyramids SERS substrate (HPZA) was constructed. • Developing a dual-chiral synergistic enhancement strategy. • Pioneering the integration of deep learning algorithm with this chiral SERS platform. The widespread use of combined pesticides has led to increasing concerns over mixed pesticide residues in food, posing significant challenges for rapid and reliable detection. Herein, we develop an intelligent surface-enhanced Raman spectroscopy (SERS) platform by integrating a bichiral nanostructured substrate with deep learning for multiplex pesticide analysis. A hierarchical porous chiral ZIF-8 (HPZ) was engineered using L-histidine as a pore-expanding agent and assembled with L-cysteine-directed Au@Ag bipyramids to form the HPZA substrate, enabling synergistic adsorption enrichment and electromagnetic enhancement. The resulting platform exhibits high sensitivity and stability, achieving a detection limit of 9.54 ng/mL for quinalphos in citrus samples. Moreover, when coupled with a fully connected neural network (FCNN), it enables accurate discrimination of multiple pesticides and their mixtures, reaching an identification accuracy of 93.33%. This work presents an integrated material–algorithm strategy for rapid and intelligent detection of pesticide residues, offering a promising approach for food safety monitoring. Download: Download high-res image (105KB) Download: Download full-size image
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Materials Today Energy
·
2026
·
IF 8.1
Yipeng Nie,Longquan Deng,Zipei Cui,Zhao Jiang,Wenchao Sheng
Coupling hydrogen evolution reaction (HER) with glycerol oxidation reaction (GOR) in a hybrid electrolyzer represents a highly promising approach for green hydrogen production and glycerol upgrading. However, the limited activity and stability of existing GOR catalysts restrict the energy efficiency of the coupled system. In this study, Pd/C and Pd 4 Ag x /C catalysts were synthesized to investigate the impact of Ag on the activity and stability of Pd-based catalysts for GOR. The optimized Pd 4 Ag 8 /C demonstrated a specific activity of 17.4 ± 0.1 mA cm −2 Pd and a mass activity of 13.2 ± 0.3 A mg −1 Pd , both being more than 10 times higher than those of Pd/C. Combined results of ultra-performance liquid chromatography and density functional theory calculations revealed that the introduction of Ag promotes C−C cleavage in glyceric acid on Pd sites, facilitating electron transfer in GOR and thereby enhancing the GOR activity. The GOR coupled HER hybrid electrolyzer using Pd 4 Ag 8 /C as the GOR catalyst achieved a significant reduction of ∼1.07 V in cell voltage compared to conventional water electrolysis system at a current density of 10 mA cm −2 with a favorable operational stability, and realized the production of high-value-added chemicals, demonstrating the promising potential in both hydrogen production and upgrade of glycerol.
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APPLIED CATALYSIS B-ENVIRONMENTAL
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2026
·
IF 19.7
Qiu-ran Lu,Ying-jie Sun,Ya-mei Xue,Xiao-jing Wang,Hui-ying Mu,Fa-tang Li
A dual-scale Ag-Bi/TiO 2 -Ov architecture couples photogenerated electrons with interfacial protons, resolving the kinetic disconnect in CO 2 methanation. • Adjacent Ag-Bi sites synergistically lower the barrier for *COOH formation while facilitating proton spillover from TiO 2 -Ov. • The optimized photocatalyst achieves a CH₄ evolution rate of 75.17μmol·g −1 ·h −1 with 97.2% selectivity under sacrificial-agent-free conditions. Solar-driven CO 2 -to-CH 4 conversion could help close the anthropogenic carbon loop, yet its practical realization is consistently undermined by poor selectivity and a kinetic disconnect between interfacial electron transfer and proton availability. Herein, we address these limitations by constructing a dual-scale architecture that deliberately couples proton spillover dynamics with CO 2 activation pathways. Highly dispersed Ag-Bi hetero-bimetallic nanoalloys are integrated onto oxygen-vacancy-enriched TiO 2 through a one-step reductive transformation of metal oxyacid precursors, establishing atomically intimate Ag-Bi dual active sites. Operando diffuse reflectance infrared Fourier transform spectroscopy coupled with density functional theory calculations reveals that this bimetallic interface not only lowers the *CO 2 →*COOH free-energy barrier and stabilizes *CO intermediates to suppress parasitic desorption, but also orchestrates directional proton spillover via localized electrostatic modulation. Electrons relayed from the oxygen-vacancy-rich TiO 2 converge spatially with protons generated in situ at surface oxygen vacancies, establishing a concerted proton-coupled electron transfer channel that governs the sequential hydrogenation of adsorbed *CO to CH 4 . Guided by this mechanistic rationale, the optimized photocatalyst (A 1 B 1 T30) achieves a CH 4 production rate of 75.17 μmol·g −1 ·h −1 with 97.2% selectivity. By resolving how electrons and protons converge at the interface, the work identifies a concrete materials lever for selective C 1 photoreduction. Download: Download high-res image (196KB) Download: Download full-size image
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JOURNAL OF APPLIED POLYMER SCIENCE
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2026
·
IF 3.1
Wenqin Xu,Jinhui Chen,Caihong Zhuang,Qinhui Chen
A high loading conductive filler is typically required to reach the percolation threshold for composites; however, it leads to a decline in the material's physical and mechanical properties. Here, the conductive hydrogel (PAC-Ag-H-G) with a high-quality 3D interconnected network contained silver nanoparticles (Ag NPs), hydroxylated carbon nanotubes (HCNT), and graphene (G) in the matrix of polyacrylic acid/chitosan (PAC) was fabricated. PAC-Ag-H-G showed stretchable properties, good toughness, and breaking strength fatigue resistance. Most importantly, thanks to the 3D interconnected network formed by the vertex-edge-face structure of Ag NPs-HCNT-G, the electrical conductivity of the hydrogel is significantly enhanced with the minimal addition of only 0.2% (relative to AA) of HCNT and GO, respectively. The conductivity of PAC-Ag-H-G1 is 4.27 times that of PAC. It had steady biological or non-biological adhesion and could sensitively detect human joint movements. Additionally, this hydrogel exhibited excellent antibacterial effects against Gram-positive bacteria ( S.aureus ) and Gram-negative bacteria ( E.coli ). PAC-Ag-H-G conductive hydrogel is expected to adhere directly to the human body or the humanoid robot joint bearings for flexible motion monitoring.
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ANALYTICAL LETTERS
·
2025
·
IF 1.8
Denghao Li,Changqing Huang,Bo Yu,Dingyu Cui,Jiali Liu,Li Jiang
Polyvinyl alcohol (PVA)/Nb2C/Ag flexible SERS substrate was prepared by coating AgNPs in situ reduced by Nb2C on the surface of PVA. Sensitive SERS detection was achieved by adjusting the concentration of AgNO3, enabling the detection of 4-MBA with good homogeneity and reproducibility. The pesticide residues of phosmet on the surfaces of apples were detected by a simple wiping method with the flexible substrate. The detection range was 0.5 – 100 ppm, which met the detection standard of phosmet for fruits. The PVA/Nb2C/Ag flexible SERS substrate has the potential for convenient, rapid, and sensitive detection of pesticide residues on fruit surfaces.
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MICROCHEMICAL JOURNAL
·
2026
·
IF 5.1
Jiayan Xu,Hanlu Wang,Chenyi Yuan,Qiuyue Fu,Sizeng Bao,Guicai Fan,Lingling Bao,Chenjie Gu,Tao Jiang,Xueyan Bian
Surface-enhanced Raman scattering (SERS) has emerged as a powerful analytical technique for the sensitive point-of-care detection of anti-phospholipase A2 receptor antibodies (anti-PLA2R-Abs), a primary biomarker for membranous nephropathy (MN). However, conventional SERS substrates lack the integrated sample enrichment capability and flexible format required for efficient and convenient clinical analysis. To address this limitation, we hypothesized that an immersion-type flexible SERS medium based on conventional cotton swab could be developed for ultra-sensitive on-site detection of anti-PLA2R-Abs. Through a precisely controlled in-situ synthesis and a following ion sputtering, we engineered a ZIF-67/Ag nanocomposite on the nanofiber structure of a cotton swab, which combined molecular enrichment capability with dual signal enhancement mechanisms. The fibrous architecture of the cotton swab enabled highly efficient anchoring of biomarker-containing liquid samples, offering a significant advantage over silicon wafers. A substrate was yielded to exhibit not only outstanding SERS activity with an enhancement factor (EF) of 3.51 × 10 8 but also excellent uniformity and reproducibility. Using this structure, a quantitative assay of anti-PLA2R-Abs was facilitated across five orders of magnitude (1 × 10 −4 to 1 × 10 −9 mg/mL), achieving a limit of detection (LOD) as low as 0.185 ng/mL. Moreover, its diagnostic efficacy was further validated in clinical samples. This work presents a clinically viable point-of-care diagnostic platform that simplifies sample processing while significantly enhancing detection sensitivity for nephrology applications, thereby contributing to the advancement of point-of-care diagnostics.
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OPTICS AND LASER TECHNOLOGY
·
2026
·
IF 5
Yuhan Wang,Xinghua Yang,Minghua Ma,Pingping Teng,Fengjun Tian,Rui Wang,Xin Li,Ao Guan,Xinyu Yang,Zhihai Liu,Jianzhong Zhang,Adam Jones,Kang Li
Surface-enhanced Raman scattering (SERS) technology has shown great potential for pesticide residue detection due to its high sensitivity and molecular fingerprinting capability. However, conventional SERS sensors still face challenges such as limited enhancement efficiency, insufficient environmental stability, high sample consumption, and poor portability, which restrict their practical applications. This paper first presents and demonstrates an in-fiber optofluidic SERS sensor based on the unique microstructure of a cloverleaf hollow fiber (CHF) structure, in which a graphitic carbon nitride/silver nanoparticle (g-C 3 N 4 /Ag NPs) nanocomposite is functionalized onto the inner wall as an active SERS substrate. The CHF consists of a solid core surrounded by four microchannels that naturally guide analyte solutions to efficiently interact with the evanescent field propagating along the fiber core. Through chemical bonding, the g-C 3 N 4 /Ag nanocomposite is firmly anchored to the channel surfaces, forming a stable and highly active Raman enhancement interface. Furthermore, the synergistic electromagnetic and chemical coupling between g-C 3 N 4 and Ag NPs markedly amplifies the Raman response. Benefiting from the unique structure of the cloverleaf fiber and the synergistic enhancement effect of the SERS composite substrate, the enlarged light-matter interaction area and continuous signal accumulation along the entire fiber, the sensor achieves detection limits of 5.21 × 10 −9 mol/L, 7.15 × 10 −8 mol/L and 2.88 × 10 −8 mol/L for representative pesticides, with excellent linearity and repeatability. Consequently, the compact and flexible configuration enables real-time, in situ, and trace-level detection, demonstrating great potential for portable optical sensing, environmental monitoring, and food safety applications.
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Surfaces and Interfaces
·
2026
·
IF 6.3
Yue Zhao,Zhaotian Ba,Yu Long,Yuanyi Kang,Tao Zhang,Meng Xin,Guohua Fan,Chuncheng Hao
The performance contradiction between dielectric constant and breakdown strength restricted the significant improvement in energy storage density of common dielectrics. In this work, the ternary BaTiO 3 @Ag/PVDF composites were prepared, in which the fibrous BaTiO 3 fillers were prepared by electrospinning and further modified with silver (Ag) nanoparticles via silver mirror reaction. Dielectric performance of the composites was effectively improved by the hybrid fillers owing to the synergies of the increased polarizations and the Coulomb blockade effect. Dielectric constant and breakdown strength of the composites with only 0.2 wt% filling content reached 14.8 and 421.7 MV/m, which were respectively increased 124.4% and 135.9% compared to that of the pristine PVDF. And the maximum energy storage density was increased to 4.5 J/cm 3 with the ultra-low content of fillers. This work broke the inherent contradictions in single-layer composites and provided novel attempts for dielectric modulation of dielectrics.
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危险品化学品经营许可证（带存储）