LANGMUIR
·
2026
·Vol. 42
·期 29
·21139-21154
·
IF 4.4
Mai Quan-Doan,Dang Thi Hanh Trang,Tran Van Tiep,Ngo Thi Loan,Ong Van Hoang,Cao Thi Hong,Nguyen Quang Hoa,Lich Le Van,Nguyen Cong Chi,Mai Xuan Trang,Phan Manh-Huong,Pham Anh-Tuan,Le Anh-Tuan
Surface-enhanced Raman spectroscopy (SERS) is a powerful
analytical
technique capable of providing rapid and noninvasive molecular fingerprint
identification through characteristic vibrational signatures. However,
developing SERS platforms that enable both ultrasensitive and highly
selective detection, particularly for molecules with intrinsically
weak Raman responses, remains a major challenge, yet it is highly
desirable for expanding the currently limited application scope of
SERS. Herein, we introduce a novel plasmonic porous multicore@shell
Ag@UiO-66 nanostructure that synergistically integrates the localized
surface plasmon resonances (LSPRs) of Ag nanoparticles (NPs) with
the selective molecular capture capability of the metal–organic
framework UiO-66. The hybrid structure is fabricated via a simple
solvent-induced self-assembly strategy, enabling in situ formation
of UiO-66 around dispersed AgNPs at room temperature. The resulting
architecture immobilizes multiple AgNP cores within a porous UiO-66
shell matrix, simultaneously stabilizing their plasmonic activity
and generating abundant interparticle hotspots. More importantly,
the UiO-66 shell provides molecular recognition toward salicylic acid
(SA─a bioactive aromatic compound) through synergistic adsorption
interactions involving bidentate coordination with Zr nodes, hydrogen
bonding, and π-π interactions. This cooperative plasmonic-molecular
recognition mechanism effectively concentrates target molecules at
electromagnetic hotspots, leading to significantly enhanced SERS signals.
As a result, the developed platform achieves highly selective and
ultrasensitive detection of SA with a detection limit down to 1 nM,
far surpassing that of traditional SERS substrates (∼1 μM).
Furthermore, machine learning-assisted spectral analysis confirms
the reliable and selective identification of SA in complex mixtures.
This work demonstrates an effective strategy for developing MOF-enabled
selective and ultrasensitive SERS platforms, opening new avenues for
advanced molecular sensing applications.
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高影响因子
JOURNAL OF MATERIALS RESEARCH
·
2026
·
IF 2.9
Wan Qi,Tong Liping,Li Yingjun,Zhang Yunfeng,Zhao Bo,Zou Zhijuan,Li Jingkang,Liu Zhiwei,Chen Tao,Zhu Wenkun,Song Yingze
In this investigation, Si nanoparticles are anchored onto a multi-level carbon structure (C-MSZSZ) derived from a heterogeneous MOF. The hierarchical carbon layers strongly bind the Si nanoparticles, providing sufficient void space to accommodate volume expansion during cycling. Additionally, the creation of trimetallic active centers and carbon defects boost electrical conductivity and Li + transport kinetics. The presence of abundant open channels within the carbon matrix also facilitates the transfer of electrons and ions, thereby leading to a promoted electrochemical reaction process. As a result, the battery harvests a high reversible capacity of 1035.7 mA h g –1 at 0.5 A g –1 after 200 cycles, along with remarkable rate capability. The delicate design of multi-level carbon architecture offers a promising strategy for the development of advanced anode materials aimed at achieving high-performance LIBs. Based on a delicate “layer-by-layer” assembly strategy, the silicon anode shows a robust structural integrity and favorable performance owing to the significantly relieved volume expansion and optimized electron/ion transport kinetics. Graphical abstract
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POLYMER
·
2026
·
IF 5.1
Tingxiao Yang,Ying Qi,Qingsong Wang,Kening Ma,Shaojian Lin,Jianwu Lan,Jiaojiao Shang
Transparent polymer films are widely used in optical devices, packaging, and information display, but most of them are derived from non-renewable petrochemical resources and show limited environmental sustainability. Cellulose represents an attractive natural polymer alternative owing to its high abundance and biodegradability. However, its pronounced hydrophilicity and limited functional integration restrict the development of advanced transparent cellulose-based films. In this work, highly transparent, water-resistant, and fluorescent cellulose-based films were fabricated from bleached forestry pulp through sequential carboxymethylation, periodate oxidation, silane coupling, diamine-assisted crosslinking, and post-functional fluorophore grafting. Carboxymethylation enabled the formation of transparent films, while silane modification and network construction significantly improved the surface hydrophobicity and water durability of the cellulose matrix. Subsequent immobilization of N-(1-pyrene)maleimide endowed the films with distinct fluorescence. The resulting films maintained high optical transparency after multistep functionalization, with a transmittance of about 90% in the visible region, exhibited a water contact angle of 101.6°, and a tensile strength of about 70 MPa. In addition, the fluorescent films showed clear optical responses under UV irradiation. This work provides an effective strategy for constructing a transparent cellulose-based platform that simultaneously integrates hydrophobicity, fluorescence functionality, and mechanical reinforcement through sequential covalent modification, and highlights their potential in optical labeling, smart packaging, flexible substrates, and security marking.
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TALANTA
·
2026
·
IF 6.7
Huijun Li,Tianyi Zheng,Xiang Liu,Luojia Cheng,Junjun Sun,Zhouqing Xu,Yan Wang
A multifunctional composite, designated as ZIF-8@LY/ZIF-8@CDs-Eu 3+ , was rationally designed as a fluorescence probe and high-performance photocatalyst for simultaneous detection and degradation of oxytetracycline (OTC). To address the critical challenge of co-encapsulating fluorescein (LY) and Eu 3+ -functionalized carbon dots (CDs-Eu 3+ ) within a single porous particle without functional incompatibility, we proposed a core-shell ZIF-8 architecture, where the etched ZIF-8 core served as the host for LY loading, and the in situ grown ZIF-8 shell was introduced to immobilize CDs-Eu 3+ . The acetic acid etching of the ZIF-8 core created abundant sites to absorb more LY molecules, which further enhanced the OTC removal efficiency. On this basis, a fluorescence “turn-on” ratiometric quantitative detection platform for OTC was established, with a low limit of detection (LOD) of 1.8 nM. Meanwhile, the ZIF-8@LY/ZIF-8@CDs-Eu 3+ composite achieved 99% OTC removal within 300 min under light irradiation, driven by the generated reactive species including superoxide radicals (·O 2 − ), hydroxyl radicals (·OH), and photogenerated holes (h + ). Notably, three parallel degradation pathways of OTC were identified via high-performance liquid chromatography-tandem mass spectrometry (HPLC-MS). This work not only provides an innovative strategy for the design of multifunctional MOF-based composites, but also opens a new avenue for the efficient monitoring and elimination of antibiotic residues in complex environmental matrices.
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Journal of Future Foods
·
2026
·
IF 10.6
Jinjie Hua,Liyue Yang,Jianqiang Ma,Xiwang Li,Ting An,Fenglan Zhang,Ming Chen,Xinxin Lv,Jiayi Zhu,Jinjin Wang,Haibo Yuan,Yongwen Jiang
Tea varieties are key factors influencing tea type and flavor quality. However, the key biochemical indicators biochemical indicators associated with tea varietal suitability remain unclear, and the traditional phenol-ammonia ratio is insufficient as an evaluation criterion. Therefore, identifying reliable biochemical markers for evaluating tea varietal suitability is important for optimizing tea processing and product quality. We aimed to identify key biochemical indicators associated with tea varietal suitability for black and green tea processing and to establish a predictive model for evaluating tea varietal adaptability. Molecular biology and targeted metabolomics approaches were used to analyze polyphenol oxidase (PPO) activity, the expression of three PPO isozymes, and the contents of 60 non-volatile metabolites (NVMs) in fresh leaves from 20 representative tea varieties. Variable importance in projection, S-plot, taste active value, and classification analyses were applied to identify key differential indicators. A predictive model for tea varietal suitability was subsequently developed using data preprocessing and regression analysis. Nine key differential biochemical indicators, including epigallocatechin gallate, epicatechin gallate, epigallocatechin, epicatechin, catechin, myricetin-3-O-galactoside, theaflavin-3-3′-di-O-gallate, theanine, and glutamic acid, together with three enzyme-related indicators, namely PPO activity and the expression levels of PPO2 and PPO4, were identified. Tea varieties suitable for black tea exhibited high levels of epigallocatechin gallate, epicatechin gallate, theaflavin-3-3′-di-O-gallate, and PPO activity, particularly PPO4 expression. In contrast, tea varieties suitable for green tea showed high levels of epigallocatechin, epicatechin, theanine, glutamic acid, and myricetin-3-O-galactoside content. A 1DER+MINMAX data preprocessing method and predictive model effectively evaluated tea varietal suitability. This study identified key biochemical indicators associated with tea varietal suitability and established a predictive model for evaluating tea adaptability for black and green tea processing. These findings provide theoretical and technical support for the efficient utilization of fresh leaf leaves and tea product development.
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Surfaces and Interfaces
·
2026
·
IF 6
Yu Feng,Wenjing Xie,Ao Qian,Yunxuan Xiao,Peng Liu
Phosphate inhibits As sequestration while redirecting interfacial redox pathways. • Passive phosphatization forms a phosphate-enriched mixed corrosion shell. • Surface-associated ROS contribute to enhanced oxic As(III) oxidation. • Surface Fe(II) retention is associated with an anoxic As(0) fraction up to 32.7%. Surface corrosion layers govern the reactivity of zero-valent iron (ZVI), yet their dynamic reconstruction by co-occurring phosphate and its consequences for arsenic (As) transformation remain poorly understood. In this work, we demonstrate that in situ passive phosphatization restructures the ZVI interface into a phosphate-enriched mixed corrosion shell. This interfacial reconstruction decreased overall As sequestration through competitive phosphate occupancy but promoted distinct As(III) redox pathways depending on oxygen availability. Under oxic conditions, phosphate promoted aqueous As(V) accumulation and increased the XPS-derived near-surface As(V) fraction from 52.1% to 78.1% on the finer ZVI. Oxygen-exposure, scavenger, and probe experiments indicated that this enhancement involved surface-associated reactive oxygen species. Under anoxic conditions, phosphate incorporation increased the near-surface Fe(II) fraction to 70.6% and the As(0) fraction from 6.7% to 32.7%, indicating enhanced interfacial As reduction associated with Fe(II) retention. Spectroscopic and electrochemical analyses further showed altered ZVI corrosion behavior and charge-transfer resistance. These findings establish co-occurring phosphate as an active regulator of ZVI interfacial reactivity rather than merely a competitive inhibitor, revealing a trade-off between As redox transformation and sequestration and highlighting its potential for ZVI-based pretreatment coupled with downstream As capture. Download: Download high-res image (212KB) Download: Download full-size image
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Food Bioscience
·
2026
·
IF 6.2
Zhongqin Li,Jiazhen Shi,Yinghua Song,Yue Tang,Lian Xia,Yuangen Wu
Butylated hydroxyanisole (BHA) is a synthetic phenolic antioxidant widely used in edible oils and fat-containing foods. Excessive BHA poses significant risks to human health, thus making rapid and sensitive detection of BHA crucial for health protection. Herein, the Ag 2 CO 3 nanozyme was prepared by the simple precipitation method, which exhibits both laccase-mimic and oxidase-mimic activities. It was found that the oxidase-mimic activity of Ag 2 CO 3 facilitated the conversion of TMB to its blue oxidized form (oxTMB), and subsequent addition of BHA resulted in the formation of a characteristic purple adduct. Additionally, BHA effectively suppressed the laccase-mimic activity of the Ag 2 CO 3 nanozymes. Therefore, a novel colorimetric sensor was constructed using the dual-enzyme-mimic activities as a sensing signal for rapidly detecting BHA in edible oil. The colorimetric sensor achieves limits of detection (LOD) for BHA as low as 1.1 μM in the laccase-mimic channel and 0.08 mM in the oxidase-mimic channel, both of which are substantially lower than the maximum permissible BHA level in edible oils stipulated in Chinese National Food Safety Standard GB 2760. The sensor developed in this work shows great promise for application in the field of edible oil detection.
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ACTA PHYSICO-CHIMICA SINICA
·
2026
·
IF 13.5
Jialei Dong,Jixing Bai,Liu Yang,Haiyan Zhang,Junbo Qi,Saina Zheng,Yue Wang,Huiyan Zhang,Qi Cao
Layer engineering is widely applied in two-dimensional materials to achieve tunable and optimal properties. Graphene oxide (GO) nanosheets, as carbon-based carriers, offer various advantages for electromagnetic wave (EMW) absorption, including high specific surface area, tunable conductivity, and abundant polar functional groups. Nevertheless, the regulation of layer numbers of GO-based composite absorbents, and comprehensive understanding of the underlying mechanisms influencing the EMW absorption properties remain insufficient. This study converts ZIF-67/GO into Co/rGO composites, and employs the layer engineering via ultrasonic-assisted calcination, to investigate the influences of GO layer numbers on the material’s EMW absorption performance. In the optimized Co/rGO, few-layer GO forms a better conductive network, while the well-dispersed Co nanoparticles introduce magnetic loss and assist in achieving impedance matching. As a result, this sample delivers considerable absorption performance, with a minimum reflection loss of −49.86 dB and an effective absorption bandwidth of 5.35 GHz. Following additional heteroatom doping, the Co/rGO composite could further achieve an absorption efficiency of above 99.9999% (−68.02 dB), which efficiently reduce EMW signals from highly reflective targets to background noise level. This study confirms the effectiveness of layer engineering in regulating electromagnetic properties and thereby enhance the absorption performance of carbon-based composites to achieve strong and broadband EMW absorption. Through layer engineering and doping treatment, Co/rGO composites achieve strong and broadband EMW absorption performance. This study comprehensively reveal the correlations between microstructure and electromagnetic properties of 2D Co/rGO composites. Download: Download high-res image (201KB) Download: Download full-size image
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BIORESOURCE TECHNOLOGY
·
2026
·
IF 8.2
Haoyu Chai,Xin Li,Yu-Cai He,Cuiluan Ma
Recombinant E. coli ADH6–GDH carrying ADH6 and GDH was constructed for bioreduction. • ADH6–GDH whole-cell fully converted 40 mM syringaldehyde to syringyl alcohol. • Substrate spectrum was explored using lignin-derived aldehydes via bioreduction. • Lipase Novozym 435 enabled the conversion of syringyl alcohol to syringyl acetate. • Tandem biocatalysis with reductase and lipase was used to synthesize aromatic esters. Efficient valorization of lignin-derived aromatics remains a key challenge in sustainable chemistry. Biobased aromatic alcohols and esters are important value-added compounds widely used in fragrances, pharmaceutical intermediates, fine chemicals, and functional materials. In this study, a whole-cell biocatalytic system co-expressing alcohol dehydrogenase (ADH6) from Saccharomyces cerevisiae and glucose dehydrogenase (GDH) was developed for the efficient conversion of syringaldehyde to syringyl alcohol. The GDH-based cofactor regeneration module enabled in situ reduced nicotinamide adenine dinucleotide phosphate (NADPH) supply, thereby improving catalytic efficiency while reducing the dependence on external cofactors. Under optimized conditions, the system achieved a high analytical yield of 98.3% at 40 mM syringaldehyde in an aqueous system, representing, to the best of our knowledge, the highest substrate concentration reported so far for this biocatalytic conversion. The substrate spectrum was further evaluated using representative lignin-derived aromatic aldehydes, including cinnamaldehyde, p -anisaldehyde, vanillin, and 3,4-dimethoxybenzaldehyde. These substrates were converted into cinnamyl alcohol, 4-methoxybenzyl alcohol, vanillyl alcohol, and 3,4-dimethoxybenzyl alcohol, respectively. Cinnamaldehyde, p -anisaldehyde, and 3,4-dimethoxybenzaldehyde afforded the corresponding alcohols with analytical yields of 99%, whereas vanillin gave vanillyl alcohol with an analytical yield of 86% after 4 h. Molecular docking indicated that these substrates could bind within the ADH6 active pocket through similar orientations, supported by hydrogen-bonding and hydrophobic interactions, providing structural explanation for the observed substrate adaptability. In addition, coupling with immobilized lipase Novozym 435 enabled the conversion of syringyl alcohol into syringyl acetate via transesterification. This work established an efficient tandem biocatalysis with reductase and lipase for upgrading of lignin-derived aromatic compounds. Download: Download high-res image (100KB) Download: Download full-size image
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FOOD HYDROCOLLOIDS
·
2026
·
IF 13.8
Shuo Han,Yanan Zhao,Herui Zhang,Qiufeng Zhang,Boqun Liu,Yang Li
3D printing has emerged as a promising technology for developing nutritional foods to meet the needs of people with dysphagia. However, a single hydrogel or oleogel cannot meet the strict performance requirements for 3D printing, while bigels are ideal inks by combining the merits of both gels. In this study, soybean protein isolate (SPI)–rice bran oil (RBO) bigels were prepared at oleogel/hydrogel ratios of 30:70, 40:60, 50:50, 60:40, and 70:30. The samples were characterized by confocal laser scanning microscopy (CLSM), Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), differential scanning calorimetry (DSC), rheology, texture profile analysis (TPA), low-field nuclear magnetic resonance (LF-NMR), liquid binding capacity (LBC), oxidative stability, International Dysphagia Diet Standardisation Initiative (IDDSI) tests, and manual extrusion using a 3D printing pen. Increasing oleogel content promoted phase evolution from oil-in-water (O/W) to bicontinuous and water-in-oil (W/O) structures, enhanced hydrogen-bonding-related spectral changes and crystallinity, and reduced free-water mobility. All formulations showed shear-thinning behavior and elastic-dominant networks. Among them, BG6 (60:40) showed the most balanced performance, including the highest thermal stability (Tpeak = 55.17 °C), high LBC (98.68%), relatively slow lipid oxidation, IDDSI Level 5 compliance, and visually stable F-, Z-, and cube-shaped structures under manual extrusion. These results suggest that SPI-RBO bigels, particularly BG6, have potential as plant-based edible inks for dysphagia-oriented 3D printed foods under the tested conditions.
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Catalysts
·
2026
·Vol. 16
·期 8
·725
·
IF 4.5
Hongtao Xie,Limi Yan,Shijian Lu,Pengcheng Xiang,Dongliang Liu,Lili Wang
The electrocatalytic reduction of CO2into value-added chemicals offers a promising route to mitigate greenhouse gas emissions, yet the uncontrollable structural reconstruction and surface rearrangement of electrocatalysts during operation often lead to severe activity degradation. Herein, we reveal that Bi2O2SO4(BSO) undergoes an irreversible phase transformation into Bi2O2CO3(BCO) nanosheets accompanied by the partial reduction of Bi3+to metallic Bi0under cathodic potentials. A series of BCO/BSO heterojunction catalysts with tunable compositions are synthesized via a mild in situ ion-exchange method. To circumvent the detrimental effects of this dynamic reconstruction, we devise a pre-activation strategy that deliberately completes the structural evolution prior to electrocatalysis. The optimized 20%-BCO/BSO heterojunction achieves a remarkable Faradaic efficiency of 98.4% for formate production in a flow cell at elevated potentials, with >95% FE(HCOOH)over a wide potential window (−0.8 to −1.7 V vs. RHE). In situ infrared spectroscopy elucidates that the reconstructed interface can promote CO2adsorption, stabilize the *OCHO intermediate, and facilitate HCOOH desorption. This work provides experimental evidence of the reconstruction behaviour of bismuth-based catalysts and offers a rational design method for constructing structurally stable heterojunction electrocatalysts.
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MICROCHEMICAL JOURNAL
·
2026
·
IF 5.2
Chenxuan Ai,Xueli Yang
MOF-derived ZnO and Au-ZnO materials were synthesized via a coprecipitation method. • The response value of 0.5 wt% Au-ZnO to 100 ppm n-butanol is 649.77 at 250 °C. • Response time is just one second, enabling real-time detection of n-butanol. • This sensor has a low detectable concentration, excellent selectivity and stability. N-butanol is a flammable volatile organic compound (VOCs) posing potential threats to human health and environmental quality, making its real-time detection critically important. Although Au-functionalized MOF-derived ZnO has been investigated for gas sensing, the influence of Au loading on surface-defect regulation and n-butanol sensing behavior remains insufficiently understood. Herein, porous ZnO rhombic dodecahedra derived from ZIF-8 were functionalized with controlled Au loadings of 0.25, 0.5, and 0.75 wt%. The optimized 0.5 wt% Au-ZnO sensor exhibited a response of 649.77 and a response time of 1 s towards 100 ppm n-butanol at 250 °C, with the response being approximately 3.6 times that of pristine ZnO. A measurable response of 1.41 was obtained at 50 ppb, representing the lowest experimentally verified concentration in this study. The sensor also demonstrated good selectivity, repeatability, and long-term stability. XPS analysis showed that the 0.5 wt% Au-ZnO sample possessed the highest relative oxygen-vacancy content of 34.8%. DFT calculations further suggested a stronger adsorption tendency of n-butanol on the Au-ZnO surface than on pristine ZnO. These results demonstrate that controlled Au loading provides a favorable balance among interfacial charge modulation, oxygen-vacancy regulation, catalytic activity, and adsorption-desorption kinetics. The dodecahedral structure of the MOF-derived ZnO confers high sensitivity to n-butanol on the sensor, providing uniform anchoring sites for gold nanoparticles (Au NPs). Through Schottky barrier modulation, catalytic effects and oxygen vacancy enhancement, the modification with Au NPs further improves the capture efficiency and signal amplification for n-butanol concentrations in the ppb range. Download: Download high-res image (231KB) Download: Download full-size image
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危险品化学品经营许可证（带存储）