JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2021
·
IF 5.279
Yiming Xie,Haiyan Wang,Xinyue Yuwen,Guosong Lai
Herein, we combine the exonuclease III (Exo III)-catalyzed release of a Zn2+-dependent ligation DNAzyme with the DNAzyme-driven strand displacement reaction (SDR) to develop a novel homogeneous colorimetric bioassay method for kanamycin (Kana) antibiotic detection. Upon the biorecognition reaction between Kana and a designed hairpin DNA, the DNAzyme-containing strand can be catalytically released by Exo III. Then, this DNAzyme will catalyze the ligation of two oligonucleotides to cause a SDR and the aggregation of gold nanoparticles (Au NPs) labeled by two linker DNA strands. Due to the aggregation of Au NPs for colorimetric signal transduction and the Exo III and SDR-assisted dual signal amplification, this method shows a wide linear range of 5 orders of magnitude and a very low detection limit down to 8.1 fg mL–1. Together with its excellent selectivity, repeatability, reliability, and convenient manipulation, the proposed method shows a great potential for the food quality monitoring application.
研究领域:
分析化学
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生物化学
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纳米技术
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食品科学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF ENVIRONMENTAL MANAGEMENT
·
2025
·
IF 8.4
Ruizhe Chen,Leilei Cheng,Wenbo Zhang,Jing Gu,Haoran Yuan,Yong Chen
The catalytic pyrolysis of polyethylene for aromatic production is a promising method for waste plastic disposal and resource recovery. This study investigated the nature of metal species and the distribution of acidic sites in low-density polyethylene (LDPE) scission-aromatization reactions using metal-loaded zeolite catalysts. Under the influence of the 1.0Zn/MOR40 catalyst, LDPE achieved a maximum aromatic selectivity of 45.71 % at 500 °C, based on the total product composition. The results indicated that catalysts with a lower Brønsted acid site to Lewis acid site ratio (BAS/LAS) and a higher concentration of [ZnOH] + species favored the reaction, promoting the generation of olefin intermediates and aromatics while suppressing polycyclic aromatic hydrocarbons (PAHs) formation. However, there was an optimal range for the BAS/LAS ratio and [ZnOH] + species concentration. Reaction results involving squalene and triacontane demonstrated that excessive dehydrogenation of reactants and insufficient BAS could hinder the progression of aromatization reactions, resulting in an increased proportion of PAHs. This study provides a comprehensive understanding of the balance between the synergistic and antagonistic effects of metal-acid sites on the aromatization process.
研究领域:
化学工程
·
催化
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高分子科学
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材料科学
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环境科学
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产品关联
DOI
PubMed
高影响因子
ACS Sustainable Chemistry & Engineering
·
2021
·
IF 8.198
Zhen Zeng,Shang Wang,Jun Cheng,Guangmei Hou,Deping Li,Guifang Han,Lijie Ci
Solid polymer electrolytes (SPEs) are preferable in the pursuit for developing high-energy Li metal batteries due to their inherent flexibility and intimate contact with electrodes. However, continuous interfacial parasitic reactions and undesired Li dendrite growth caused by inhomogeneous plating/stripping of Li+ result in rapid deterioration of an SPE/Li interface. Herein, a novel Zn2+-containing SPE (SPE-xZn) with anionic groups partially tethered on the polymer chains is developed to meet these challenges. During cycling, Zn2+ cations inside the SPE-xZn will gradually migrate to the surface of a Li electrode and then evolve to a Li-Zn alloy layer, where Li+ can diffuse more efficiently. Meanwhile, owing to the electrostatic interaction, the immobilized anionic groups within SPE-xZn can alleviate local concentrated Li+ flux. The synergistic effects of an in situ formed alloy layer and unique macromolecular structure can promote uniform plating/stripping of Li, thus yielding a more stable SPE-xZn/Li interface. Therefore, steady cycling over 300 h at 0.2 mA cm–2 is achieved by Li/SPE-5Zn/Li, and an impressive capacity retention of 87.3% at 0.5 C after 800 cycles is realized by LFP/SPE-5Zn/Li with an average Coulombic efficiency of 99.90%.
研究领域:
材料科学
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电化学
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电池技术
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Han Gao,Ni Chen,Luyi Sun,Dandan Sheng,Yuting Zhong,Mingru Huang,Chengxuan Yu,Xing Yang,Yuefeng Hao,Shiyi Chen,Zhengzhong Shao,Jun Chen
Artificial graft serves as the primary grafts used in the clinical management of sports-related injuries . Until now, optimizing its graft-host integration remains a great challenge due to the excessive inflammatory response during the inflammatory phase, coupled with an absence of tissue-inductive capacity during the regeneration phase. Here, a multi-layered regenerated silk fibroin (RSF) coating loaded with curcumin (Cur) and Zn 2+ on the surface of the PET grafts (Cur@Zn 2+ @PET) was designed and fabricated for providing time-matched regulation specifically tailored to address issues arising at both inflammatory and regeneration phases, respectively. The release of Cur and Zn 2+ from the Cur@Zn 2+ @PET followed a time-programmed pattern in vitro. Specifically, cellular assays revealed that Cur@Zn 2+ @PET initially released Cur during the inflammatory phase, thereby markedly inhibit the expression of inflammatory cytokines TNF-a and IL-1β. Meanwhile, a significant release of Zn 2+ was major part during the regeneration phase, serving to induce the osteogenic differentiation of rBMSC. Furthermore, rat model of anterior cruciate ligament reconstruction (ACLR) showed that through time-programmed drug release, Cur@Zn 2+ @PET could suppress the formation of fibrous interface (FI) caused by inflammatory response, combined with significant new bone (NB) formation during regeneration phase. Consequently, the implementation of the Cur@Zn 2+ @PET characterized by its time-programmed release patterns hold considerable promise for improving graft-host integration for sports-related injuries.
研究领域:
生物医学工程
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组织工程
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运动医学
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材料科学
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产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
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IF 13.3
Hang Ruan,Yuwen Zhong,Huining Ding,Zehui He,Jiaqi Li,Meng Long,Zhi Wang,Qing Xia,Teng Guo,Chunyun Zhu,Tao Yang,Nianping Feng,Yongtai Zhang
Licorzinc is a commonly used immunomodulator, but faces poor water solubility, high oral dose, and side effects of zinc accumulation by long-term administration. Herein, a new licorzincform was developed by adsorbing glycyrrhizic acid (GA) into zeolitic imidazolate framework-8 (GA@ZIF-8) with superior solubility and acid-responsive drug release properties. Then, a dual-continuous microneedle patch was developed for simultaneous transdermal delivery of GA@ZIF-8 and monitoring Zn 2+ in local tissues, where dissolving microneedles as a drug delivery unit were fabricated from hyaluronic acid. In contrast, swollen hydrogel microneedles as a diagnostic unit were prepared from double cross-linking of N-acryloyl-glycinamide and α-methylacrylic acid and hybridized with Eu 3+ and terpyridine (TPy). The microneedles for transdermal GA@ZIF-8 delivery were completely dissolved in 2 min, which improved the cyclophosphamide-induced hair follicle recession in mice by reducing CD8 + NKG2D + T cells infiltration, inhibiting Jak receptor activation, and decreasing IL-15 and IFN-γ. Additionally, as a sensor unit, the microneedles rapidly absorbed water swelled when stabbed into the skin, and fluoresced red when exposed to 365 nm light. Zn 2+ in the inter tissue fluid competes with Eu 3+ in the TPy-Eu 3+ complex and coordinates with Tpy, which triggers a change in fluorescence. Notably, the detection Zn 2+ concentration range was 10 –8 M–10 –1 M, and it was not disturbed by metal ions including Na + , K + , Mg 2+ , and Ca 2+ , suggesting that it is competent to be applied as a real-time chemosensor of Zn 2+ . Collectively, this newly designed system with both therapeutic and diagnostic functions provides a new strategy for treating zinc-related diseases.
研究领域:
药学
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材料科学
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生物医学工程
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皮肤科
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产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Jiahao Chen,Miao He,Anjun Hu,Mengjiao Liu,Chuan Zhao,Bo Zhou,Runjing Li,Zhongfu Yan,Yu Pan,Yining Fan,Jing Liu,Liujun Cao,Jianping Long
Rechargeable aqueous zinc-ion hybrid supercapacitors (ZHSs) are drawing extensive attention because of their cost-effectiveness and diminished safety hazards. Nevertheless, large-scale application of ZHSs has been hindered by the severe side reactions and rampant dendrites growth on the surface of Zn metal anodes. Herein, we propose a three-dimensional organic–inorganic composite frame material as an artificial bi-functional layer coated on the zinc foil, featuring nitrogenous functional groups with zincophilicity (abbreviated as NCFM@Zn). The nitrogen (N) site's strong adsorption capacity and synergistic effect of the sub-nanopore size promote rapid desolvation of zinc ions and reduce side reactions, while also prolonging galvanized nucleation's Sand's time and allowing for even nucleation. Moreover, the uniform distribution of N on the layer results in homogeneous zinc ions flux and supports consistent zinc plating while inhibiting dendrites generation. As a result of this unique artificial bi-functional layer, symmetric Zn cells can survive 2500 h at 2.5 mA cm −2 . High-areal-capacity zinc||activated carbon hybrid supercapacitors also demonstrate 20,000 cycles at high Coulombic efficiency, thus highlighting the utter convenience and potential of this strategy for modifying rechargeable metal hybrid supercapacitor surfaces.
研究领域:
材料科学
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电化学
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储能
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超级电容器
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产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2021
·
IF 7.312
Haoyu Yue,Zhijie Shang,Pan Xu,Dongyue Feng,Xinxue Li
A novel EDTA functionalized chitooligosaccharide/sodium alginate/Ca 2+ physical double network hydrogel (ECSDNH) was prepared by using of high-salinity oilfield produced water. The formation and structure of ECSDNH were characterized by FT-IR and SEM. Various factors, including EDTA functionalized chitooligosaccharide content, pH of solution, initial concentration of heavy metal ions, temperature and contact time, were thoroughly investigated to explore their effect on adsorption capacity of ECSDNH. The obtained results showed that ECSDNH had higher adsorption capacity for Zn 2+ , Ni 2+ and Mn 2+ . The maximum adsorption capacities of Zn 2+ , Ni 2+ and Mn 2+ were 160.19 mg/g, 72.67 mg/g and 52.43 mg/g at 298 K, respectively. The pseudo-second-order kinetic model and Langmuir isotherm model fit the experimental data fairly well. The thermodynamic parameters of the adsorption, Δ H ° , Δ S ° , and Δ G ° , were also calculated. In addition, the ECSDNH still had higher removal efficiency for three metal ions after three adsorption-regeneration cycles, indicating its potential application for removing heavy metal ions from wastewater.
研究领域:
环境科学
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材料科学
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化学工程
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产品关联
DOI
高影响因子
POLYMERS FOR ADVANCED TECHNOLOGIES
·
2014
·Vol. 25
·期 12
·1391-1395
·
IF 1.964
Q. Huang,G. Chen,J. Liu
Polyanilines (PANIs) doped with Zn 2+ and Cu 2+ were synthesized by H 2 O 2 oxidative polymerization of aniline in the presence of corresponding metal chloride in solution. The products were characterized by elemental analysis, UV-Vis-NIR, FTIR and Raman spectroscopies. Scanning electron micrograph was employed to examine the morphology of PANIs fabricated in the presence of different transition metals. Experimental results showed that transition metal ions had been successfully incorporated into the polymer, and there was a strong interaction between the transition metal ions and the PANI chains. The electrical conductivity of PANI doped with Zn 2+ and Cu 2+ is 0.37 and 0.21 S/cm, respectively, which is higher than that of HCl doping PANI corresponding to 0.052 S/cm. The cyclic voltammetric study has indicated that incorporation of metal ions in PANI backbone results in increasing of specific capacitance compared to that of HCl doping PANI. Copyright © 2014 John Wiley & Sons, Ltd.
研究领域:
材料科学
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化学
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产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Qingqing Zheng,Liyang Liu,Zewei Hu,Zhenwei Tang,Haiying Lu,Yunqi Gao,Jiayao Wang,Yijian Song,Chao Han,Weijie Li
Hydrogel electrolytes are favored for flexible zinc-ion batteries (FZIBs) due to their biocompatibility. Their application progress, however, is severely restricted by the poor water retention and low Zn 2+ transference number (t Zn 2+ ). Herein, one composite polymer electrolyte (CPE) is prepared by introducing Prussian blues (PBs) as multifunctional fillers in polyvinyl alcohol (PVA) matrix to enhance t Zn 2+ . Experimental and theoretical characterizations confirm that the PB filler can alter the Zn 2+ migration mechanism and trap water of CPE. PBs as active fillers can provide extra zinc ions and unique 3D ion diffusion channels. Moreover, the metal centers in PB framework that function as the Lewis acid sites have good affinity with anions in Zn salt, facilitating the dissociation of Zn salt. Additionally, the PB framework can absorb coordination water, enhancing the anti-dehydration capability and the ionic conductivity of the hydrogel electrolytes. Consequently, P-15/Zn-15 hydrogel electrolyte shows high ionic conductivity of 16.3 mS cm⁻ 1 and t Zn 2+ of 0.63. The Zn||Zn symmetric cells with P-15/Zn-15 hydrogel electrolyte can stably operate for 1 600 h at 50 °C. The Zn||P-15/Zn-15|| NaV 3 O 8 ·1.5H 2 O full cell exhibits excellent cycling performance of 1 600 cycles.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2026
·
IF 7.6
Ao Sun,Yujuan Wu,Shou Chen,Xinglin Wei,Kun Ding,Baofeng Wang
Spinel-type ZnMn2O4 cathodes for aqueous zinc-ion batteries (AZIBs) offer high theoretical capacity and elemental abundance, yet their electrochemical performance is fundamentally hindered by Mn dissolution-induced structural instability and sluggish Zn2+ diffusion kinetics. Herein, we propose a tunable cationic vacancy engineering strategy for ZnMn2O4 cathodes, enabling selective introduction of Zn2+ or Mn3+ vacancies via a facile chemical coprecipitation method. Comprehensive characterizations confirm that these cationic vacancies significantly enhance electronic conductivity and accelerate Zn2+ diffusion kinetics. Specifically, the Zn-vacant Zn1–xMn2O4 cathode outperforms its Mn-vacant counterpart, leveraging strengthened Mn–O bonding and reduced electrostatic repulsion during Zn2+ insertion, delivers a high reversible capacity of 276.4 mAh g–1 at 0.5 A g–1, exceptional rate capability (retain 134.4 mAh g–1 at 2 A g–1), and long-term cyclability with 92% capacity retention after 2000 cycles at 2 A g–1. Furthermore, a prototype pouch cell incorporating this engineered cathode achieves a superior capacity of 150 mAh g–1 at 0.5 A g–1, demonstrating its great potential for practical high-performance AZIBs.
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DOI
高影响因子
SCIENTIA HORTICULTURAE
·
2020
·
IF 2.769
Yu Tao Huang,Shu Yu Cai,Xiao Li Ruan,Shan Yu Chen,Gao Fu Mei,Guan Hai Ruan,Dong Dong Cao
Zinc (Zn 2+ ) stress is an important abiotic constraint affecting crop seed germination and plant growth. It is vital to exploit and utilize zinc-polluted soil by exploring technologies for promoting seed germination under Zn 2+ stress. This study aims to explore the effects of salicylic acid (SA) and 2-aminoindan-2-phosphonic acid (AIP, SA synthesis inhibitor) on the Zn 2+ stress resistance of sunflower during seed germination. Zn 2+ treatment significantly inhibited seed germination and seedling growth of sunflower. In addition, Zn 2+ treatment increased Zn 2+ and abscisic acid (ABA) contents, while decreased SA and gibberellins (GA) contents of sunflower seeds. Exogenous SA effectively alleviated the inhibition of Zn 2+ stress on sunflower seed germination, promoted endogenous SA anabolism, and increased the expression of zinc transporter-related genes family ( MTP and HMA ), which leading to decreased Zn 2+ accumulation. Moreover, exogenous SA increased GA content and decreased ABA content by regulating the gene expressions of metabolic related enzymes. On the contrary, AIP treatment further aggravated the inhibitory effect of Zn 2+ stress on sunflower seed germination. This study demonstrated that exogenous SA could affect the Zn 2+ metabolic balance in sunflower seeds by regulating the expression of Zn 2+ transport-related gene ( MTP and HMA ), promote the biosynthesis of endogenous SA and GA, inhibit the accumulation of ABA content, and improve the germination ability of sunflower seed under zinc stress.
研究领域:
植物生理学
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环境科学
·
农学
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产品关联
DOI
高影响因子
LANGMUIR
·
2018
·
IF 3.789
Mingxi Yang,Qiuling Tang,Yang Meng,Junjun Liu,Tanglue Feng,Xiaohuan Zhao,Shoujun Zhu,Weixian Yu,Bai Yang
Zn2+-passivated carbon dots (named Z-CDs) were synthesized from zinc gluconate for the first time through a one-step pyrolysis treatment. The mechanism of Zn2+-enhanced fluorescence was carefully investigated, and a new strategy to passivate the surfaces of CDs by Zn2+ was proposed. Inspired by the complexation reaction between Zn2+ and ethylenediaminetetraacetic acid (EDTA), a reversible “off–on” fluorescent nanosensor for the detection of EDTA and Zn2+ was constructed based on the depassivation and repassivation of Z-CDs, with a limit of detection as low as 3.2 × 10–7 M and 5.1 × 10–7 M, respectively. The proposed Z-CD-based nanosensor had been further utilized for EDTA and Zn2+ monitoring in tap water with excellent recovery. To the best of our knowledge, this was the first report of a fluorescence-based sensor of EDTA and a turn-on sensor of Zn2+ based on CDs with reversible detection capability. Also, benefiting from the low toxicity of zinc, Z-CDs were applied for multicolor bioimaging and in vitro detection in cells.
研究领域:
材料科学
·
分析化学
·
纳米技术
·
环境科学
·
生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）