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.
研究领域:
分析化学
·
材料科学
·
食品安全
·
环境监测
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2025
·
IF 6.2
Xiaohai Yan,Jia Li,Fudai Cai,Xuejun Zeng,Sijia Li,Kai Wang,Qinglin Sheng,Kewei Feng,Yahong Yuan,Tianli Yue
Patulin (PAT) is a mycotoxin with immunotoxicity, genotoxicity, and neurotoxicity, so effective methods are needed for its detection. Fluorescence aptasensors provide a homogeneous detection method, but their sensitivity needs to be further improved. Herein, we developed a fluorescence aptasensor based on a target-oligonucleotide-driven DNAzyme motor and defective Zr-TCPE for PAT detection. The defective Zr-TCPE achieved an enhanced fluorescence intensity (increased by ∼1.9-fold) via defect engineering. The target-oligonucleotide-driven DNAzyme motor achieved effective PAT transduction, with a signal background ratio 4.4-fold that of the competitive transduction strategy. By combining defective Zr-TCPE with a target-oligonucleotide-driven DNAzyme motor, we achieved ultrasensitive detection of PAT with a detection limit as low as 9.38 fg/mL. In addition, the proposed fluorescence aptasensor could be used for the detection of PAT in apple juice, with recoveries ranging from 95.93% to 105.71%. This fluorescence aptasensor provides reasonable guidance for trace detection of hazardous substances in food and the environment.
研究领域:
分析化学
·
生物传感器
·
食品安全
·
纳米技术
·
毒理学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2020
·
IF 3.573
Mingbo Shi,Daiwu Lin,Renliang Huang,Wei Qi,Rongxin Su,Zhimin He
The treatment of multicontaminant wastewater has attracted extensive attention in recent years. Herein, we synthesized a porous and hydrophobic composite (Zr-MOF-SH/MF) via the in situ growth of mercapto-functionalized Zr-metal–organic frameworks (MOFs) (Zr-MOF-SH) on the surface of a melamine formaldehyde (MF) sponge. The successful growth of hydrophobic Zr-MOF-SH, as confirmed by SEM, XRD, and XPS analysis, made the MF sponge become hydrophobic with a water contact angle of 125°. The adsorption capacity of the Zr-MOF-SH/MF composite for dichloromethane can reach up to 113 g/g. Moreover, the composite can efficiently and selectively remove Hg2+ ions from water. Especially, PCN-224-MAA/MF had an adsorption capacity of 412.5 mg/g for Hg2+ ions. The removal efficiency of Hg2+ ions increased as the oil content in the oil–water mixture increased. In addition, PCN-224-MAA/MF can be recovered and reused five times with only a slight decrease in adsorption capacity. This study provides a promising strategy for the synthesis of a dual-functional composite that exhibits excellent performance in removing oil and heavy metal ions simultaneously from water.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2023
·
IF 5.2
Di Zhang,Hongli Hu,Ji-an Wei,Xin Xu,Lei Chen,Xiaohui Wu,Qianqian Yu,Bo-xing Zhang,LinGe Wang
Titanium dioxide (TiO 2 ) is well known for its photocatalytic and antibacterial properties which are widely used in organic pollutants treatment and antibacterial. However, the fast recombination of electron-hole pairs of TiO 2 and the wide bandgap energy during photocatalysis progress are prominently degrades its photocatalytic efficiency. In this study, we designed and investigated Zr-doped TiO 2 ceramic nanofibrous membranes with enhanced photocatalytic properties for dye scavenging and bacteria inactivation. A mixture solution of poly(acrylonitrile) (PAN) and preceramic polymers (Zr-doped polytitanoxane) was electrospun to fabricate Zr-doped TiO 2 ceramic nanofibrous membranes, which were then carbonized in argon at 600 °C and calcined in air at 400 °C. It was found that the morphologies, structures, and characteristics of ceramic nanofibrous membranes were significantly influenced by the composition and content of preceramic polymers. The doping of Zr element improved photocatalytic activity of ceramic nanofibrous membranes and achieved efficient antibacterial activity . This work demonstrates a new strategy for the fabrication and application of multifunctional TiO 2 composites by incorporating with ceramic nanofibrous membranes.
研究领域:
材料科学
·
环境科学
·
纳米技术
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Baicheng Yuan,Xinyi Huang,Shaojinlin Yang,Yi Yang,Zhihong Lin,Raphael Semiat,J. Paul Chen
Heavy metal contamination has become one of the greatest global environmental problems. In this study, a magnetic calcium-alginate hydrogel-sphere encapsulated with Fe–Mn–Zr ternary-metal composite (MCHETC) was prepared through a combined co-precipitation and extrusion approach and used for the adsorption of heavy metals in aqueous solutions. The active sites were dispersed in the MCHETC, which can be separated by the magnetic force for the ease in operation. Above 80% of ultimate adsorption was completed at a contact time of 5 h. The copper uptake history was well described by the intraparticle surface diffusion model, suggesting a multi-step process for the adsorption. The optimum pH for adsorption was 4; the maximum adsorption capacity was 103.1 mg-Cu/g. The adsorption capability well remained after the 5 adsorption–desorption cycles and the copper could be recovered. Furthermore, the adsorbent performed well in the nature water spiked with copper ions. The mechanism studies illustrated that the adsorption was mainly controlled by the ion-exchange reaction. This study demonstrated that the MCHETC adsorption technology may be used for heavy metal removal and recovery with higher efficacy.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2024
·
IF 2.7
Qingtai Chen,Chongchong Wu,Shujie Hu,Lizhi Cui,Yong Zhang,Peng Hu,Zhi Xu,Pei Yu,Miao Yu
Xylanase is a natural and high-efficiency catalyst for the degradation of xylan to reducing sugar. However, the catalytic performance of xylanase is greatly limited by its poor activity and stability at the harsh condition. To overcome this issue, covalent immobilization of xylanase on a magnetic porous MOFs material with core-shell structure, UIO-66-NH2 carrier was applied to improve the catalytic activity and stability of xylanase. Several tools were employed to monitor the preparation and immobilization processes, magnetic properties, and the structural/chemical characteristics of the biocatalyst. 77.9% of the activity for xylanase was retained after immobilization. Moreover, the thermal stability in terms of half-life of the immobilized enzyme was three times higher than that in free form, and which had higher catalytic efficiency for hydrolysis of xylan. Furthermore, the greater temperature and wider pH ranges of the activity stability were achieved for the immobilized xylanase in compared with free one. Notably, the biocatalyst exhibits both excellent storage stability and could be easily separated using a magnet, which is conducive for its reusability. And nearly 70% of its initial activity was retained after seven recycles during the hydrolysis of corn straw. These features indicate that the present immobilization method is promising prospect for the industrial application of enzyme.
研究领域:
生物技术
·
酶工程
·
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Qunfeng Chen,Daobin Tang,Qi Zhang,Zhiyuan Tang,Longlong Ma,Xinghua Zhang
Electron-metal support interactions (EMSI), which can tailor the microenvironment through electron transfer and coordination structure design, are an effective strategy to augment the intrinsic catalytic activity of catalysts. However, it remains challenging to establish the interfacial structure and interfacial electron configuration of catalysts to precisely regulate and enhance EMSI. In this work, the spatially defective sites and specific electronic states of Pd-UiO-66 were modified by in-situ constructing a W-O-Zr interface to strengthen the EMSI between Pd nanoparticles (Pd NPs) and UiO-66 support via implanting W into the defective Pd-UiO-66, realizing the effective hydrodeoxygenation (HDO) of vanillin (VAN) at room temperature (RT). The as-prepared catalyst Pd-UiO-66–0.24 W achieved > 99 % conversion of VAN and > 99 % yield of 2-methoxy-4-methylphenol (MMP) within 12 h, which surpassed the previous reports. The DFT analysis revealed that the narrow band-gap energy between Pd-UiO-66–0.24 W and H 2 molecule, along with the σ or π coordination adsorption between p and d orbitals of the implanted W and O in C=O, facilitated the activation of the H 2 molecules and reactant molecules. In addition, the constructed electron-deficient W-O-Zr interfacial sites provided more acidic sites that favor the cleavage of C-O bonds, promoting the HDO process of VAN. This work provides important insights into the modulation of EMSI, structural defects and acidic sites of metal–organic frameworks (MOFs)-based catalysts for efficient HDO of lignin-derived oxygenated compounds.
研究领域:
催化化学
·
材料科学
·
理论计算化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2025
·Vol. 36
·期 24
·1-13
·
IF 2.8
Rafiq Muhammad Nasir,Dai Zhonghua,Zheng Yuanyuan,Li Xujun,Liu Chenxi,Zhao Xin,Cong Yu,Gu Shuitao
The performance of lead-based ceramics in energy storage applications is often hindered by their low energy density and inadequate phase transition properties. The (Pb, La) (Zr, Sn, Ti)O 3 (PLZST) antiferroelectric ceramics have attracted much attention as energy storage materials. In this work, ceramics Pb 1−1.5 x La x (Zr 0.93 Sn 0.05 Ti 0.02 )O 3 at ( x = 0.015, 0.025, 0.035, and 0.045) were prepared using a solid-state method, and their dielectric and energy storage characteristics were studied. It was observed that integrating lanthanum significantly improved the perovskite structure, reducing grain size and boosting the polarization intensity. In this present study, a recoverable energy storage density ( W rec ) of 6.24 J/cm 3 was achieved under an electric field of 270 kV/cm. Moreover, these ceramics demonstrated an impressive discharge energy density ( W dis ), with 90% of the energy released within 1.29 μs. The outcomes show that PLZST is a highly effective material for advanced energy storage, pulse power applications, and paving the way for technological advancements.
研究领域:
材料科学
·
陶瓷
·
能量存储
·
固体物理
·
介电材料
✓ 已验证
产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2024
·
IF 4.9
Wenrong Cai,Yanjing Shi,Datong Wu,Junyao Li,Laidi Xu,Yong Kong
This work proposes a novel dual-signal electrochemiluminescence ( ECL) immunosensor based on energy resonance transfer (RET) for the detection of β2-Microglobulin (β2-MG). Introducing carbon vacancy into g-C 3 N 4 (V C -g-C 3 N 4 ) can lead to the narrowing of the band gap and the reduction of LUMO, thereby significantly enhancing the ECL efficiency of the material. Meanwhile, Zr-MOF can effectively load Ru(bpy) 3 2+ (Ru-Zr-MOF), enabling its stable existence on the electrode. The ECL emission spectrum of V C -g-C 3 N 4 overlaps well with the fluorescence excitation spectrum of Ru-Zr-MOF, indicating an effective ECL-RET effect between them. As the concentration of β2-MG increases, the intensity of anodic ECL signal gradually increases, while the intensity of cathodic ECL signal gradually decreases. The difference between the cathodic and anodic ECL signals has a good linear relationship within the concentration range from 0.2 pg/mL to 200 ng/mL, with a detection limit of 27.73 fg/mL. The constructed immunosensor can be used for practical analysis in human serum. The proposed sensor has great potential in clinical detection of β2-MG, providing new insights for biomolecular detection and disease diagnosis.
研究领域:
生物化学
·
分析化学
·
生物医学工程
·
临床诊断
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2022
·Vol. 12
·期 33
·21574-21581
·
IF 4.036
Junfeng Zhu,Xiaorong Meng,Wen Liu,Yabing Qi,Siyi Jin,Shanshan Huo
We present an efficient and easy synthesis method for incorporating organocatalytic moieties into Zr-metal organic frameworks (Zr-MOFs). The catalytic activity and selectivity of the new chiral catalysts were improved by adjusting the aperture of the MOF cavities. The hole size of the Zr-MOF was modulated by adding acid and replacing bridge ligands during synthesis. The difunctional chiral units of amino acid–thiourea are anchored onto the Zr-MOF by a mild synthesis method from an isothiocyanate intermediate which could effectively avoid the racemization of chiral moieties in the synthesis process. By means of specific surface area measurement (BET), scanning electron microscopy (SEM) and powder X-ray Diffraction (PXRD), it was confirmed that Zr-MOFs with different pore sizes were synthesized without breaking the basic octahedral structure of the MOF. Finally, good yields (up to 83%) and ee values (up to 73%) were achieved with the new heterogeneous catalysts in 48 hours for the aldol reaction of 4-nitrobenzaldehyde with acetone. By contrast, using the catalyst support without modulating the synthesis, the yield (30%) and the ee-value (26%) were both low. Experiments have confirmed the important influence on the reaction selectivity of providing a suitable reaction environment by controlling the aperture of MOF cavities.
研究领域:
材料化学
·
有机合成
·
催化化学
✓ 已验证
DOI
高影响因子
JOURNAL OF INORGANIC BIOCHEMISTRY
·
2021
·
IF 4.155
Yucui Jiang,Saixing Liu,Qipeng Yuan,Hao Liang
Acidophilic enzymes play an important role in special industrial catalytic reactions. In this work, we reported Zr-based acid-stable nucleotide coordination polymers (CPs) for efficiently improving acidophilic enzymes immobilization . Among all tested metal ions , the Zr 4+ /AMP CPs exhibited the highest acid stability and enzyme affinity. As a typical acidophilic enzyme, the immobilized Chloroperoxidase by Zr 4+ /AMP CPs displayed robust reusability in the asymmetric synthesis of modafinil, remained 95.7% of conversion rate and 99.1% enantiomeric excess (e.e.) value. This work displayed a novel acid-stable bioorganic and inorganic hybrid nanomaterial for acidophilic enzymes immobilization.
研究领域:
材料科学
·
生物催化
·
酶工程
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2025
·
IF 7.7
Mengyao Chen,Wenjing Qin,Yanli Wang,Yu Song,Fei Tian,Hanlin Zhai,Changshun Gu,Le Ge,Song Xue,Xinxin Li,Xiangchuan Zhao,Yixin Xu,Zeyu Ming,Shengrong Li,Shougen Yin
3D printing hydrogel shows a broad application prospect in soft actuator/robot and flexible electronics due to its adaptable structure and designable chemical composition. Herein, a Zr 4 + -deep eutectic solvent (DES)-PAAc hydrogel is developed via digital light processing (DLP) 3D printing technology. By synergistically integrating hydrogen bonding, Zr⁴⁺-carboxylate ionic coordination bonds, and electrostatic interactions between DES and PAAc chains, the hydrogel achieves a unique soft-hard phase-separated dual-network architecture. This design provides an internal energy dissipation-storage mechanism, endowing the hydrogel with exceptional mechanical robustness (maximum stress of 1.86 MPa), high conductivity (conductivity of 0.51 S/m), and cyclic compression stability (energy dissipation of 2.69 kJ m⁻³), thereby overcoming the trade-off between toughness and functionality in conventional hydrogels. Leveraging DLP 3D printing, the hydrogel is precisely tailored into complex architectures (e.g., bioelectrodes, impact-resistant structures). Remarkably, the hydrogel serves as a self-powered pressure-sensing electrolyte in Zn-Cu batteries and a weather-resistant bioelectrode for real-time monitoring of bio-signals. Furthermore, its tailored structures exhibit programmable impact resistance for delicate device protection. The combination of additive manufacturing and cross-domain functionality establishes a paradigm for hydrogels in wearable healthcare, soft robotics, and energy-autonomous sensing systems.
研究领域:
材料科学
·
3D打印/增材制造
·
柔性电子器件
·
传感器
·
能源存储
·
生物医学工程
·
软体机器人
·
高分子科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）