INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Jie Zhang,Xu Liu,Yu Sun,Zhaoyan Ge,Xinlu Tian,Jian Shen,Jiang Yuan
Diabetic wound healing is often hampered by persistent oxidative stress, poor angiogenesis, and bacterial infections. Herein, ZnS/keratin nanoclusters(ZnS@Ker) were first synthesized using the ion diffusion method based on chelation between keratin and metal ions, achieving the controlled release of hydrogen sulfide (H 2 S) and Zn 2+ ions. These nanoclusters were then co -electrospun with polyurethane (PU) to afford PU/ZnS@Ker mats. These mats demonstrated acidic responsive release of Zn 2+ and H 2 S under an infected wound microenvironment, fostering cell adhesion, migration, and angiogenesis while effectively combating bacterial infection and scavenging reactive oxygen species. Notably, in vivo wound healing studies in diabetic rats revealed that PU/ZnS@Ker mats promoted collagen deposition and tissue regeneration, thereby accelerating wound healing. Taken together, PU/ZnS@Ker biocomposite mats emerge as an up-and-coming solution for managing diabetic wound healing.
研究领域:
生物医学工程
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材料科学
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药理学
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产品关联
DOI
PubMed
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2019
·
IF 2.931
Shengjie Jiang,Jiabin Qiu,Shibing Chen,Hongyu Guo,Fafu Yang
Although all kinds of sensors with unique detecting ability for one guest were reported, the fluorescence sensor with multiple detecting abilities was seldom presented. This work designed and synthesized a novel AIE fluorescence probe bearing double detecting for ATP based on Cu 2+ and Zn 2+ response of hydrazono-bis-tetraphenylethylene ( Bis-TPE ). Bis-TPE was prepared in 82% yield with simple procedure. It exhibited strong red AIE fluorescence based on the large conjugated electron effect in aqueous media. It showed outstanding selective sensing abilities for Cu 2+ by strong fluorescence quenching and for Zn 2+ by red-orange fluorescence change. The sensing mechanism of 1:1 stoichiometric ratios was confirmed by 1 H NMR and MS study. The strong red fluorescence of Bis-TPE + Cu 2+ system could be recovered by adding ATP. The orange fluorescence of Bis-TPE + Zn 2+ system could be quenched by adding Cu 2+ and then was recovered by adding ATP. These double detecting abilities for ATP with the “off-on” red fluorescence in Bis-TPE + Cu 2+ system and “allochroic-off-on” orange fluorescence in Bis-TPE + Zn 2+ +Cu 2+ system were successfully applied to test Cu 2+ , Zn 2+ and ATP in test paper and living cell imaging, displaying the good application prospects for sensing Cu 2+ , Zn 2+ and double detecting ATP in the complicated environment.
研究领域:
分析化学
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生物化学
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材料科学
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生物成像
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DOI
PubMed
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2023
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IF 9.5
Min Chen,Jiangzhou Luo,Honglei Ling,Xueping Zong,Song Xue
Developing membranes that combine excellent gas separation performance with robust resistance to plasticization is highly demanded for membrane separation but remains a challenge. Herein, a series of Zn 2+ functionalized poly(benzoxazole-co-imide) membrane was constructed via co-polymerizing (4,4′-hexafluoroisopropylidene) diphthalic anhydride (6FDA) with o-hydroxyl diamine 2,2′-bis(3-amino-4-hydroxyphenyl)-hexafluoropropane (BisAPAF) and 1,3,5-tris(4-aminophenyl)benzene (TAPB) followed by thermal rearrangement (TR) and Zn 2+ modification processes. The TR conversion opened the polymer chains with larger d-spacing and higher BET surface area, thus, greatly increased the gas permeability . Meanwhile, the post Zn 2+ modification resulted in a huge improved selectivity because of the π-complexation reactions between Zn 2+ and CO 2 and the formation of a Zn 2+ coordination crosslinking network. As a result, due to the synergistic effect of TR and Zn 2+ modification, the overall gas transport properties of these newly developed membranes were greatly improved. Furthermore, the dual network structures that arise from the remaining network PI and the Zn 2+ coordination crosslinking contribute to the resultant membrane with excellent anti-plasticization capability. A represent membrane termed as PBOI-Zn 2+ -14h membrane exhibits great CO 2 /CH 4 separation performance, delivering a CO 2 permeability of 1048.1 Barrer and a CO 2 /CH 4 selectivity of 46.1 that is exceeded the 2008 Roberson limitation. Furthermore, this membrane possesses remarkable resistance to CO 2 -induced plasticization, withstanding pressures above 35 Bar. Overall, this study presents an effective way for constructing polymer membranes with both high gas separation performance and strong resistance to plasticization issue.
研究领域:
材料科学
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膜分离技术
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化学工程
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产品关联
DOI
高影响因子
Nanoscale
·
2023
·Vol. 15
·期 8
·3940-3951
·
IF 6.7
Juan Wu,Ya-qi Chi,Yu-jia Yan,Meng-zhen Ji,Xuan Chen,Xue-qin Yang,Yuan Gao,Qin Zou,Ling Zou,Xi-yu Li
Hydroxyapatite (HA) is a biomimetic biomaterial that has been widely used in bone repair for many years. However, the increased risk of infection after surgery and long-time tracing for the material distribution and degradation during bone reconstruction remain challenges in the clinic. Zinc (Zn) is considered as an indispensable microelement for humans and is characterized with antibacterial action and osteogenic activity. Terbium (Tb), a rare-earth element, emits stable fluorescence under ultraviolet light. Here, Tb3+/Zn2+ co-doped hydroxyapatite (HA:Tb/Zn) was prepared to synchronously realize the antibacterial effect, osteogenic activity, and long-time tracing property. We found that HA:Tb/Zn had a strong antibacterial effect on both Gram-positive and Gram-negative clinical infectious bacteria, as well as improved osteogenic activity. HA:Tb/Zn also displayed stable green fluorescence in vitro and in vivo, which indicated great potential for recognizing the material changes during the bone reconstruction process. The combination of the ternary functions is of great significance to control the overuse of antibiotics and realize long-time tracing, and provide a versatile design on biomaterials in bone repair.
研究领域:
生物材料
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生物医学工程
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骨科
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Haowen Wang,Hao Zhang,Shixuan Feng,Yuxia Shi,Hankun Wang,Kangze Zhao,Aolin Nie,Tingxi Li,Mingliang Ma,Yong Ma
Nowadays, electromagnetic radiation significantly impacts the normal operation of electronic devices and poses risks to human health. To effectively address this problem, the development of composites that exhibit exceptional electrochemical wave absorption through the combination of different components holds great promise. In this study, we have successfully prepared 1D Ni nanochains@Zn 2+ doping polypyrrole/reduced graphene oxide (Ni NCs@Z-P/RGO, denoted as R-x) composites using a combination of hydrothermal, solvothermal, in situ polymerization, and physical blending methods. Notably, the R-2 composite demonstrates a remarkable minimum reflection loss (RL min ) of −63.58 dB at 14.3 GHz, with a thickness of 1.61 mm. Furthermore, the R-2 composite exhibits an impressive effective absorption bandwidth (EAB) of 5.08 GHz (11.92 GHz-17 GHz) at a thickness of 1.67 mm. These outstanding performances can be attributed to the synergistic effect of the different components and a well-thought-out structural design. Moreover, to showcase the practical applicability of the material, we have conducted additional investigations on the reduction of the radar cross-sectional area (RCS). The results strongly demonstrate that the prepared composite material, when used as a coating, effectively reduces the RCS value by up to 26.6 dB m 2 for R-2 at θ = 0°. The experimental methods and simulations presented in this study hold significant potential for application in wave absorption research and practical implementations. Additionally, the prepared Ni NCs@Z-P/RGO composites demonstrate feasibility as wave-absorbing materials for future utilization.
研究领域:
材料科学
·
电子工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
·
2018
·
IF 2.179
Guofang Zhang,Yiming Li,Zhonghui Hou,Jianyi Xv,Qingchun Wang,Yanghuan Zhang
The Cu 2+ and Zn 2+ co-doped CeO 2 -based solid solutions were synthesized via hydrothermal method . The microstructure and the spectra features of the solid solutions were characterized systematically. The XRD results showed that the dopants were incorporated into the CeO 2 lattice to form Ce 1-x Cu 0.5x Zn 0.5x O 2 solid solutions when x was lower than 0.14. The cell parameters and the crystalline size decreased linearly, and the lattice strain gradually increased with increasing the doping level. The TEM patterns showed that the particle size in the solid solution was lower than 10 nm which is in accordance with the XRD results. The ICP analysis indicated that the real doped content in the solid solution was close to the nominal proportion. XPS proved that the Ce 3+ component was increased by doping. The Raman and PL spectra indicated that the lattice distortion and the oxygen vacancies also increased following the same trend. At the same time, the synergistic effects of two ions co-doped solid solutions were studied by comparing them with that of single ions doped samples. The catalysis effects of Cu 2+ and Zn 2+ co-doped CeO 2 -based solid solutions on the hydrogen storage electrochemical and kinetic properties of Mg 2 Ni alloys were detected. The electrochemistry properties of the Mg 2 Ni-Ni-5 wt% Ce 1-x Cu 0.5x Zn 0.5x O 2 composites indicated that the doped catalysts could provide better optimizations to improve the maximum discharge capacities and the discharge potentials. On the other hand, the charge transfer abilities on the surface and diffusion rate of H atoms in the bulk of alloys also got improved. The DSC measurements showed that the hydrogen desorption activation of the hydrogenated composites with Ce 0.88 Cu 0.06 Zn 0.06 O 2 solid solutions decreased to 77.03 kJ mol −1 , while that of the composites with pure CeO 2 was 97.62 kJ mol −1 . The catalysis effect was enhanced by the doped content increase that means that the catalysis mechanism had close links to the oxygen vacancy concentration and the lattice defects in the solid solutions. On the other hand, the doped Cu 2+ and Zn 2+ ions could also play an important role in the catalytic process.
研究领域:
材料科学
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电化学
·
催化作用
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产品关联
DOI
高影响因子
NANO
·
2025
·
IF 1.1
Qiuhong Chen,Liyan Wu,Weiyuan Luo,Wenjian Pan,Shuang Zhang,Liping Sun,Meng Zeng
CsPbI 3 perovskite nanocrystals (NCs) are emerged as promising materials for optoelectronic devices because of their superior optical properties. However, the brightness of the deep red fluorescence does not satisfy the requirements of outdoor displays. Herein, we report an effective strategy of Zn 2+ -assisted passivation to obtain pure red fluorescence and narrow emission CsPbI 3 NCs at a modified hot-injection method. It is found that the introduced Zn 2+ ions are successfully doped into the NCs lattice to replace some Pb 2+ ions for passivating some defects, increasing the radiative recombination rate and decreasing the nonradiative recombination rate. As a result, the as-prepared Zn 2+ -treated CsPbI 3 (Zn-CsPbI 3 ) have a luminescence peak position at 635 nm and narrow full width at half maximum of only 29.8 nm, with photoluminescence quantum yield (PLQY) up to 81%, which is 30% higher than the pristine NCs. Meanwhile, the structure of the Zn-CsPbI 3 NCs is orthorhombic (γ) phases, and their morphology is a uniformly distributed hexagonal crystal system.
研究领域:
材料科学
·
纳米技术
·
光电子学
·
钙钛矿纳米材料
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2018
·
IF 5.091
Quan Song,Yunsu Ma,Xu Wang,Tang Tang,Yueyue Song,Yujie Ma,Guanhong Xu,Fangdi Wei,Yao Cen,Qin Hu
In this work, a novel strategy for Zn 2+ detection was established by using an “on-off-on” ratiometric fluorescent nanosensor with the help of ethylene diaminetetraacetic acid (EDTA), a common metal chelating agent. The simple and practical ratiometric fluorescent nanosensor was synthesized by covalently binding CdTe quantum dots (QDs) and carbon dots (CDs), possessing two emission peaks at 525 nm and 450 nm under a single wavelength excitation of 360 nm, respectively. The CdTe QDs served as the response signal label, and the CDs, having no response to the analytes, acted as the reference signal. The fluorescence emission of the nanosensor was turned off to create a low-level “off” state when EDTA was added, and turned on dramatically with the addition of the target Zn 2+ . Under the optimal conditions, the change of the fluorescence intensity ratio of the nanosensor at 525 nm and 450 nm (ΔF 525 /F 450 ) had good linearity against the concentrations of Zn 2+ within a dynamic linear range of 0.50–40 μM. The limit of detection was as low as 0.33 μM (3σ/K), which was low enough for the detection of Zn 2+ in human body. The proposed method was successfully applied to the detection of Zn 2+ in human urine and plasma with RSDs less than 10%. The results show that the as-prepared QDs-CDs ratiometric nanosensor has potential application of clinical detection of Zn 2+ in the human body.
研究领域:
分析化学
·
纳米技术
·
生物医学工程
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产品关联
DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Xiaoqiang Xiong,Xiaodong Jing,Qianqian Zhao,Xi Yang,Qun Wang,Guoguo Tan,Tongyun Zhao,Huayang Gong
We successfully synthesized W-type/Spinel composite ferrites containing Co and Zn ions (W/ x S ( x = 0.5, 1, 2, 4, 8)) via “one-pot” sol-gel auto-combustion method. By setting up the comparison groups, the enhanced absorption performance of the composite ferrite materials compared with the single-phase material is clearly demonstrated. The “one pot” synthesis makes the co-existence of Co 2+ and Zn 2+ in the W-phase and S-phase lattices, resulting in composite ferrites with excellent soft magnetic and microwave absorption properties. SEM-EDS characterization revealed that Co and Zn were roughly evenly distributed in the W and S phase. Benefitting from the increased saturation magnetization and decreased magnetocrystalline anisotropy caused by Zn substitution, composite ferrites with excellent soft magnetic properties were obtained at appropriate Co/Zn ratios. W-type/Spinel composite ferrites exhibit tunable magnetic loss characteristics via changing the total Co/Zn molar ratios. On account of the broadband high magnetic loss characteristics, the well comprehensive microwave absorption properties were obtained. For W/0.5S, a minimum reflection loss of −70.46 dB (d = 1.76 mm) is obtained. For W/2S, a maximum effective absorption bandwidth of 10.67 GHz (d = 2.15 mm) is obtained. This work will provide new ideas for improving the microwave absorption performance of existing ferrite materials.
研究领域:
材料科学
·
电磁学
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产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2024
·Vol. 59
·期 10
·4354-4365
·
IF 3.5
Liu Chang,Li Ning,Niu Li,Li Xu,Feng Jacko,Liu Zhiming
The crosslinked of hydroxypropyl methylcellulose (HPMC) and sodium alginate (SA) with a range of weight ratios formed blend films. Antibacterial packaging films (HPMC/ZA blend film) were prepared by simple ion exchange method with HPMC/SA blend film. The mixture of Zn 2+ gave a plenty effect of the prepared films. The microstructure, physical properties, structure, and antibacterial properties of crosslinked films were investigated in detail. It was found that the infrared shifted peaks of O–H stretching and O–H bending in crosslinked HPMC/ZA film, which was caused by the formation of hydrogen bond between HPMC and ZA. SEM images of HPMC 5 /ZA 5 blend film exhibited rougher structure. In addition, the light transmission, thermal properties, water vapor permeability, and antibacterial activity of HPMC 5 /ZA 5 blend film are obviously enhanced, compared with HPMC/SA blend film. Furthermore, HPMC 5 /ZA 5 blend film exhibited better antibacterial activity against S. aureus and E. coli , revealing the possible application on food packaging.
研究领域:
材料科学
·
高分子科学
·
食品包装
·
抗菌技术
✓ 已验证
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2020
·
IF 7.1
Shengjie Jiang,Shibing Chen,Zhengchao Wang,Hongyu Guo,Fafu Yang
This work report the first AIE-based fluorescence sensor that can simultaneously detect three kinds of IIB elements (Zn 2+ , Cd 2+ and Hg 2+ ) in aqueous media. The thiourea-bridging bis-tetraphenylethylene ( Bis-TPE ) was synthesized by the condensation reaction of formyltetraphenylethylene and bis-thiosemicarbazide derivative in 82 % yield. Due to the AIE effect in the aqueous medium, the long-wavelength fluorescence was observed at 500–526 nm. It displayed high selective Zn 2+ -sensing ability with red-to-green fluorescence change, selective Cd 2+ -sensing ability with red-to-yellow fluorescence change and selective Hg 2+ -sensing ability with fluorescence enhancement, respectively. Moreover, it could detect simultaneously Zn 2+ , Cd 2+ and Hg 2+ in the mixed solution of these three kinds of cations by the fluorescence change with the assistance of Cl − and ATP. The sensing mechanism was confirmed as 1:1 stoichiometric ratio between host and guest. The detection limits were as low as 8.22×10 -8 M, 2.36×10 -7 M and 3.43×10 -8 M for Zn 2+ , Cd 2+ and Hg 2+ , respectively. These sensing abilities were applied as test strips for detecting Zn 2+ , Cd 2+ and Hg 2+ , and were used for living cell imaging, implying a high efficient and simple method for analyzing trace IIB elements (Zn 2+ , Cd 2+ and Hg 2+ ) simultaneously in complex environments and living bodies.
研究领域:
分析化学
·
生物医学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Energy Chemistry
·
2023
·
IF 13.1
Yuzhu Qian,Hongrui Wang,Xinni Li,Ting Song,Yong Pei,Li Liu,Bei Long,Xiongwei Wu,Xianyou Wang
The development of insertion-type anodes is the key to designing “rocking chair” zinc-ion batteries. However, there is rare report on high mass loading anode with high performances. Here, {001}-oriented BiOCl nanosheets with Sn doping are proposed as a promising insertion-type anode. The designs of cross-linked CNTs conductive network, {001}-oriented nanosheet , and Sn doping significantly enhance ion/electron transport, proved via experimental tests and theoretical calculations (density of states and diffusion barrier). The H + /Zn 2+ synergistic co-insertion mechanism is proved via ex situ XRD, Raman, XPS, and SEM tests. Accordingly, this optimized electrode delivers a high reversible capacity of 194 mA h g −1 at 0.1 A g −1 with a voltage of ≈0.37 V and an impressive cyclability with 128 mA h g −1 over 2500 cycles at 1 A g −1 . It also shows satisfactory performances at an ultrahigh mass loading of 10 mg cm −2 . Moreover, the Sn-BiOCl//MnO 2 full cell displays a reversible capacity of 85 mA h g −1 at 0.2 A g −1 during cyclic test.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）