JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Kui Xue,Yan-Jin Li,Tian-Hao Ma,Lan-Yue Cui,Cheng-bao Liu,Yu-hong Zou,Shuo-Qi Li,Fen Zhang,Rong-Chang Zeng
Rapid corrosion and bacterial infection are obstacles to put into use biodegradable magnesium (Mg) alloy as biomedical materials . In this research, an amorphous calcium carbonate (ACC)@curcumin (Cur) loaded poly-methyltrimethoxysilane (PMTMS) coating prepared by self-assembly method on micro-arc oxidation (MAO) coated Mg alloy has been proposed. Scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy and Fourier transform infrared spectroscopy are adopted to analyze the morphology and composition of the obtained coatings. The corrosion behaviour of the coatings is estimated by hydrogen evolution and electrochemical tests. The spread plate method without or with 808 nm near-infrared irradiation is applied to evaluate the antimicrobial and photothermal antimicrobial ability of the coatings. Cytotoxicity of the samples is tested by 3-(4,5)-dimethylthiahiazo(-z-y1)-2,5-di- phenytetrazoliumromide (MTT) and live/dead assay culturing with MC3T3-E1 cells. Results show that the MAO/ACC@Cur-PMTMS coating exhibited favourable corrosion resistance , dual antibacterial ability, and good biocompatibility. Cur was employed as an antibacterial agent and photosensitizer for photothermal therapy. The core of ACC significantly improved the loading of Cur and the deposition of hydroxyapatite corrosion products during degradation, which greatly promoted the long-term corrosion resistance and antibacterial activity of Mg alloys as biomedical materials.
研究领域:
生物医学材料
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腐蚀科学
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抗菌研究
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产品关联
DOI
PubMed
高影响因子
Journal of Energy Chemistry
·
2022
·
IF 13.599
Hongyao Xue,Alan Meng,Tongqing Yang,Zhenjiang Li,Chunjun Chen
Introducing vacancy defects and unique morphology is an effective strategy to improve the catalytic performance of transition metal compounds. However, precisely controlling the amount of vacancy defects remains challenging. Here, we propose a facile and efficient hydrothermal accompanying an annealing method to synthesize a series of Mn-doped CoO nanomaterials with controllable oxygen vacancies and unique morphology. The oxygen vacancies amount can be precisely controlled by adjusting the Mn-doping content and is positively correlated with catalytic performance. It was found that the oxygen vacancies amount can reach up to 38.2% over the Mn-doped CoO nanomaterials, resulting in ultra-high hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) catalytic activity (HER: 25.6 and 37 mV at 10 mA cm −2 ; OER: 301 and 322 mV at 50 mA cm −2 ) under both basic and acidic conditions, while reaching 10 mA cm −2 for an ultra-low cell voltage of only 1.52 V, which exceeds that of Pt/C/RuO 2 and all reported non-noble metal oxide catalysts. The DFT calculations reveal oxygen vacancies can optimize H* and HOO* intermediates adsorption free energy, thus improving the HER and OER performance. Interestingly, the Mn-doped CoO with rich oxygen vacancies exhibits excellent antibacterial properties in vitro of biomedicine. This work provides new ideas and methods for the rational design and precise control of vacancy defects in transition metal compounds and explores their potential application value in electrochemical water splitting and biomedical fields.
研究领域:
材料科学
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电化学
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生物医学
✓ 已验证
DOI
高影响因子
Journal of Water Process Engineering
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2025
·
IF 6.7
Chen Zhao,Yiheng Wang,Nianping Wang,Ruilin Chen,Rui Yin,Xiangxi Li
The in-situ growth of ZnO is often used to modify membrane surface for enhanced hydrophilic and antibacterial properties due to significant modification effect, simple process and low cost. Nonetheless, some polymer membranes (such as PVDF membrane) lack active sites for ZnO growth on their surfaces, resulting in a small number of particles and unstable binding. This study utilized PDA/PEI to modify PVDF membranes for adequate active sites to capture Zn 2+ ions via the chelation action. Thereafter, nano ZnO can be synthesized easily via the alkalization reaction and thermal breakdown of Zn 2+ . Upon improving the modification conditions, ZnO particles were evenly distributed on the PVDF membrane's surface, leading to a reduction in membrane pore size from 0.38 nm to 0.29 nm. The water contact angle of the ZnO/PDA-PEI modified membrane dropped from 130° to 19°, indicating a significant enhancement in hydrophilicity. The modified membrane demonstrated enhanced anti-fouling performance in the oil/water separation experiment, achieving a steady permeance of 298 L·m −2 ·h −1 ·bar −1 , which was sixfold that of the original membrane. In the antibacterial experiment, the modified membrane exhibited significant antibacterial efficacy against both E. coli and S. aureus .
研究领域:
材料科学
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环境工程
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生物学
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2022
·
IF 6.449
Yinchun Fang,Lvxin Chen,Jianguo Wu,Xinhua Liu
Xuan paper is outstanding representative of the precious Chinese handmade papers which is popular with traditional calligraphy and painting. However, the highly flammability of Xuan paper results in the latent fire risk. In this research, fire-resistant and antibacterial Chinese Xuan papers were prepared by fully bio-based chitosan (CS)/phytic acid (PA) intumescent flame retardant system. Xuan paper achieved the excellent flame retardancy with limit oxygen index value of 36.4% when it was coated with 20 BL CS/PA on pulp fibers . The vertical flame properties and cone calorimetry test of Xuan papers also revealed their flame retardancy were greatly improved. The tensile strength of Xuna paper was slightly influenced by CS/PA coating. The CS/PA coating on Xuan papers could greatly enhance their antibacterial properties . The flame retardant mechanism of coated Xuan papers was investigated. The results showed the CS/PA coating on pulp fibers could act through intumescent flame retardant action. The ink wetting property of Xuan paper won’t be influenced by CS/PA coating on the pulp fibers. This research provides research basis for fire-resistant and antibacterial Xuan papers by using the fully bio-based chitosan/phytic acid coating on pulp fibers.
研究领域:
材料科学
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生物学
✓ 已验证
DOI
高影响因子
Polymers
·
2017
·Vol. 9
·期 4
·116
·
IF 3.364
Rengui Weng,Lihui Chen,Shan Lin,Hui Zhang,Hui Wu,Kai Liu,Shilin Cao,Liulian Huang
Presently, most nanofiltration membranes are prepared with non-biodegradable petrochemical materials. This process is harmful to the ecosystem and consumes a large amount of non-renewable energy. In this study, biodegradable and biocompatible antibacterial cellulose/chitosan nanofiltration membranes (BC/CS-NFMs) were fabricated and characterized for their mechanical strength, antimicrobial activity, salt and dye filtration performance, and polyethylene glycol (PEG) retention using Thermal gravimetric analysis (TGA), Field emission scanning electron microscopy(FE-SEM), Fourier transform infrared spectroscopy(FT-IR), and X-ray diffraction (XRD). The BC/CS-NFMs were obtained by the hydrolysis and carboxymethylation of dense cellulose/chitosan membranes (BC/CSMs). The tensile strength of the BC/CS-NFMs decreased as the chitosan content increased. In addition, the thermal stability and antibacterial ability of the BC/CS-NFMs improved. The pore size is less than 1 nm, and a spongy, layered structure is observed in the cross-sectional FE-SEM images. FT-IR analysis shows that a part of the hydroxyl in cellulose transforms to carboxymethyl during the hydrolysis and carboxymethylation of the BC/CSMs. No obvious changes can be observed in the cellulose and chitosan after the blend membrane formation from the XRD measurements. Based on the experimental results on the permeation and rejection of BC/CS-NFMs, different proportions of cellulose and chitosan nanofiltration membranes almost did not affect the water flux and rejection rate. The BC/CS-NFMs showed better water flux and a higher rejection rate in aqueous dye-salt solutions.Keywords:cellulose;chitosan;antibacterial activity;nanofiltration membranes
研究领域:
材料科学
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环境科学
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生物医学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Huanhuan Tan,Yang Tang,Zewei Hou,Peipei Yang,Chuntai Liu,Zhipeng Xie,Songwei Li
Extraction uranium (VI) (U(VI)) from wastewater and seawater is highly important for environmental protection and life safety, but it remains a great challenge. In this work, the growth of the zeolitic imidazolate framework-8 (ZIF-8) nanoparticles on the tannic acid (TA)-3-aminopropyltriethoxysilane (APTES) modified PVDF (TAP) membrane was designed to obtain an excellent U(VI) adsorbent. The zeolite imidazolate framework composite membrane (TAPP-ZIF-60) was prepared through polyethyleneimine (PEI) bridging strategy and temperature regulation strategy in solvothermal method. The coordination bond between PEI and ZIF-8 and the covalent bond between PEI and TAP are essential in forming stable composite membrane. TAPP-ZIF with different properties was synthesized through a temperature regulation process and the TAPP-ZIF prepared at 60 °C has the uniform morphology and good performance. The adsorption capacity of TAPP-ZIF-60 is 153.68 mg/g (C 0 = 95.01 mg/L and pH = 8.0) and water permeability is 5459 L m −2 h −1 bar −1 . After ten adsorption–desorption cycles, it is proved that TAPP-ZIF-60 has good repeatability and stability. In addition, the TAPP-ZIF-60 composites membrane has a good inhibitory effect on Staphylococcus aureus and Escherichia coli . X-ray photoelectron spectroscopy (XPS) and density functional theory (DFT) analysis reveal that the coordination between TAPP-ZIF-60 and uranyl ions is the primary factor contributing to the high adsorption capacity.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Scientific Reports
·
2024
·Vol. 14
·期 1
·1-14
·
IF 3.8
Ye Jian,Shi Chenyang,Lan Jian,Chen Qingqing,Si Qin,Xu Panpan,Zhang Xijiang,Zheng Cheng
Rapid and safe hemostasis is crucial for the survival of bleeding patients in prehospital care. It is urgent to develop high performance hemostatic material to control the massive hemorrhage in the military field and accidental trauma. In this work, an efficient protein hemostat of thrombin was immobilized onto commercial gauze, which was mediated by self-polymerization and anchoring of tannic acid (TA). Through TA treatment, the efficient immobilization of thrombin was achieved, preserving both the biological activity of thrombin and the physical properties of the dressing, including absorbency, breathability, and mechanical performance. Moreover, in the presence of TA coating and thrombin, Gau@TA/Thr could obviously shortened clotting time and enriched blood components such as plasma proteins, platelets, and red blood cells, thereby exhibiting an enhanced in vitro coagulation effect. In SD rat liver volume defect and artery transection hemorrhage models, Gau@TA/Thr still had outstanding hemostatic performance. Besides, the Gau@TA/Thr gauze had inherent antibacterial property and demonstrated excellent biocompatibility. All results suggested that Gau@TA/Thr would be a potential candidate for treating uncontrollable hemorrhage in prehospital care.
研究领域:
生物医学工程
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创伤护理
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Guangyu Zhu,Fuyan Kang,Xiaoya Ding,Chunxiao Yin,Fa-Qian Liu
Biofouling has been a persistent challenge for offshore equipment, significantly affecting its longevity. In this study, two-dimensional (2D) ZIF-7 nanosheets were synthesized via a hydrothermal method and modified with polydopamine (PDA) to enhance their dispersibility. A multifunctional ZIF-7@PDA-CeO2 nanocomposite was then prepared through in situ growth, where CeO2 was uniformly and securely anchored onto the ZIF-7@PDA surface, facilitated by the large specific surface area and its electrostatic interactions between ZIF-7@PDA. UV–vis absorption spectra demonstrate that the ZIF-7@PDA-CeO2 exhibit haloperoxidase-like (HPO-like) catalytic activity, efficiently catalyzing the oxidation of NH4Br and H2O2 to generate HBrO. Antibacterial assays indicate that ZIF-7@PDA-CeO2 possesses strong bactericidal activity and effectively inhibits biofilm formation. Furthermore, ZIF-7@PDA-CeO2 are used as fillers to prepare ZIF-7@PDA-CeO2/EP composite coating, and the antibacterial and long-term corrosion resistance is also explored. We believe this work offers a sustainable solution to the challenges of biofouling and corrosion in marine environments.
研究领域:
材料科学
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海洋工程
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生物医学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2024
·
IF 7.7
Guang Yang,Hongjuan Mo,Bingjie Liu,Yiwen Wu,Guiqin Liu,Yadong Hu,Xue Jiao,Kexin Guo,Xin Wei,Yaowei Fang,Mingxuan Pan,Liang Hao
Natural polymer hydrogels, such as pullulan-based hydrogels, offer significant advantages over synthetic materials due to their thermal stability, film-forming capacity, solubility, adhesiveness, and antioxidant properties. In this study, the strain Aureobasidium melanogenum TZ-FC3, which produces a high level of pullulan, was successfully isolated from the mangrove ecosystems of Guangdong Province, China. 66.01 ± 1.10 g/L pullulan without melanin was produced by the TZ-FC3 strain within 120 h at flask level. Pullulan fermented by A. melanogenum TZ-FC3 was added to enhance the hydrogen bond network within the pullulan/PVA/borax hydrogels (P-2, P-3 and P-4 hydrogels) to improve mechanical strength and crosslinking density of PVA/borax hydrogel (P-1 hydrogel). Compared to the P-1 hydrogel, the P-2 hydrogel exhibited a 65.4 % increase in tensile strain, a remarkable 694.03 % increase in tensile strength and improved the degree of internal crosslinking. Additionally, the pullulan/PVA/borax hydrogels demonstrated excellent self-healing properties, adhesion, injectability, and antibacterial activity. The preparation process of pullulan/PVA/borax hydrogels is straightforward and effective, suggesting broad industrial applicability and underscoring their potential as next-generation materials for advanced healthcare solutions.
研究领域:
生物材料学
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微生物学
✓ 已验证
DOI
PubMed
高影响因子
Polymers
·
2022
·Vol. 14
·期 6
·1242
·
IF 4.967
Xuhui Sun,Chengcheng Yu,Lin Zhang,Jingcao Cao,Emrullah Hakan Kaleli,Guoxin Xie
Over the past few decades, polyetheretherketone (PEEK) artificial bone joint materials faced problems of poor wear resistance and easy infection, which are not suitable for the growing demand of bone joints. The tribological behavior and wear mechanism of polyetheretherketone (PEEK)/polytetrafluoroethylene (PTFE) with black phosphorus (BP) nanosheets have been investigated under dry sliding friction. Compared with pure PEEK, the COF of PEEK/10 wt% PTFE/0.5 wt% BP was reduced by about 73% (from 0.369 to 0.097) and the wear rate decreased by approximately 95% (from 1.0 × 10−4mm3/(N m) to 5.1 × 10−6mm3/(N m)) owing to the lubrication of the BP transfer film. Moreover, BP can endow the PEEK composites with excellent biological wettability and antibacterial properties. The antibacterial rate of PEEK/PTFE/BP was assessed to be over 99.9%, which might help to solve the problem of PEEK implant inflammation. After comprehensive evaluation in this research, 0.5 wt% BP nanosheet-filled PEEK/PTFE material displayed the optimum lubrication and antibacterial properties, and thus could be considered as a potential candidate for its application in biomedical materials.Keywords:black phosphorus;polyetheretherketone;lubrication properties;antibacterial properties
研究领域:
材料科学
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生物材料工程
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摩擦学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CARBOHYDRATE POLYMERS
·
2017
·
IF 4.811
Lin Yue,Jingru Li,Wanwen Chen,Xiaoli Liu,Qixing Jiang,Wenshui Xia
The novel derivatives of geraniol grafted chitosan oligosaccharide were synthesized via substitution and deprotection reaction, respectively. The products were identified by Fourier transform infrared (FT-IR), 1 H nuclear magnetic resonance (NMR), X-ray diffraction analysis (XRD), Thermogravimetric analysis (TGA) and UV–vis absorption spectroscopy. It is revealed that the derivatives exhibited a good solubility, thermal stability and antibacterial properties.
研究领域:
生物材料学
·
微生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2024
·
IF 2.7
Ruth Antwi-Baah,Malcom Frimpong Dapaah,Yajing Wang,Xiaoqin Chen,Heyang Liu
Zeolitic imidazolate frameworks (ZIFs) show promise in fighting bacterial resistance, yet crucial gaps in research hinder their clinical use. For the first time, through meticulous exploration, we unravel the correlation between the size, shape, and zinc/cobalt ion content of 25 ZIF variants and their antibacterial performance in addition to their mechanism pattern, giving special focus to oxidative stress. Notably, a novel morphology-size map of the 25 different ZIFs is established under five main groups namely, small cubes (SC), large cubes (LC), rhombic dodecahedron-large cubes (RD-LC), rhombic dodecahedron (RD), and spherical-rhombic dodecahedron (S-RD) ZIFs. The antibacterial experiments against Staphylococcus aureus showed that ZIFs in the SC group with higher cobalt content had the lowest minimum inhibition concentration (MIC) of 12.5 μg mL−1. Conversely, increased zinc content yielded better antibacterial activity for the other groups. Furthermore, our investigation into the mechanisms revealed cobalt's crucial role in fostering reactive oxygen species (ROS) accumulation, correlating with glutathione (GSH) depletion. Remarkably, the differential responses of ZIF-8 and ZIF-67 to the antioxidant N-acetyl cysteine (NAC) shed light on nuanced pathways governing antibacterial performance. While ZIF-8 demonstrated reduced efficacy, the antibacterial performance of ZIF-67 remained either sustained or modestly improved under antioxidant conditions. Overall, these findings not only enrich our comprehension of ZIFs but also propel their potential for targeted antibacterial interventions, thereby fostering confidence in their clinical translation.
研究领域:
材料科学
·
微生物学
·
医学
✓ 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）