Arabian Journal of Chemistry
·
2023
·
IF 6
Aijing Li,Xinpeng Chen,Ping Yao,Jun Zhang,Tieling Xing,Guoqiang Chen
In this work, polydopamine (PDA) was used to facilitate the reduction of silver nitrate (AgNO 3 ) to silver nanoparticles (AgNPs) and the simultaneous loading on waste silk fabrics (PDA-SF/AgNPs). The removal activity of the obtained composite PDA-SF/AgNPs on different dyes in the presence of hydrogen peroxide (H 2 O 2 ) and potassium peroxymonosulfate (PMS) was compared. The effects of reaction temperature, H 2 O 2 /PMS dosage, dye concentration, composite dosage, electrolyte concentration and time in two catalyst systems on the dye removal were discussed. The results showed the dye removal of Telon Red A2R reached 81% and 95% in 30–50 min in PDA-SF/AgNPs-H 2 O 2 and PDA-SF/AgNPs-PMS system, respectively. Quenching experiments demonstrated that ·OH, ·O 2 – and SO 4 - · were produced during the degradation process, and the possible degradation pathway of Telon Red A2R were analyzed by HPLC-MS. In addition, the kinetic study indicated that the removal of dye followed quasi-second-order adsorption kinetics. These findings suggest that fabric-based composites have great potential and applications in catalysis and treatment of wastewater.
研究领域:
环境科学
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材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
International Journal of Nanomedicine
·
2023
·
IF 8
Juanjuan Xu,Yuanpei Li,Haojie Wang,Mengxi Zhu,Wenpo Feng,Gaofeng Liang
Background The biofilms could protect bacteria from antibiotics and promote the production of drug-resistant strains, making the bacteria more difficult to be eradicated. Thus, we developed an AMP@PDA@AgNPs nanocomposite, which is formed by modifying silver nanoparticles (AgNPs) with antimicrobial peptides (AMP) modified nanocomposite to destroy biofilm in this study.Methods The AMP@PDA@AgNPs nanocomposite was prepared with polymerization method and characterized by using ultraviolet-visible (UV-vis) spectroscopy, dynamic light scattering (DLS), Fourier transform-infrared spectroscopy (FT-IR), and transmission electron microscope (TEM). The antibacterial effects of the nanocomposite were investigated by using agar diffusion method and minimum inhibitory concentration (MIC) test. The quantitative analysis of the biofilm formation by the nanocomposite was conducted using crystal violet staining and confocal laser scanning microscope (CLSM).Results The DLS and TEM analysis showed it was a spherical nanocomposite with 200 nm size and well dispersed . The results of UV-vis and FT-IR confirmed the presence of AMP and AgNPs. The nanocomposite had an excellent biocompatibility at 100 μg/mL. And the AMP@PDA@AgNPs nanocomposite showed superior antimicrobial activity against both Gram-negative (E. coli, P. aeruginosa) and Gram-positive (S. aureus) bacteria than AgNPs or AMP. Importantly, the mRNA expression of biofilm-related genes were decreased under the action of the nanocomposites.Conclusion An AMP@PDA@AgNPs nanocomposite with good biocompatibility was successfully prepared. The nanocomposite could destruct bacterial biofilms by inhibiting the expression of biofilm-related genes. The synergistic strategy of AMPs and AgNPs could provide a new perspective for the treatment of bacterial infection.
研究领域:
纳米技术
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微生物学
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材料科学
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DOI
PubMed
高影响因子
CELLULOSE
·
2025
·
IF 4.8
Li Xuanjun,Su Xiaojing,Deng Pingping,Chen Shengye,Chen Zhuohan,Li Kunquan,Wu Wenjian
In recent years, intelligent response membrane materials have aroused considerable interest in controllable oil–water separation. However, challenges such as unstable response repeatability and easy bacterial contamination continue to hinder their effective use. Herein, a superhydrophobic fabric with pH responsiveness and antibacterial property were synthesized by combing (3-mercaptopropyl)trimethoxysilane with AgNPs and pH-responsive polymer on a fabric substrate. The fabric persisted superhydrophobicity with a WCA of 156° under natural conditions, while underwent a controlled transition of surface wettability in acidic environments. Heavy oil–water mixtures and light oil–water mixtures achieved controllable separation both before and after pH response. The fabric exhibited outstanding oil–water separation capability, achieving a separation efficiency of 98.0% and a separation flux of up to 11,025.0 L·m −2 ·h −1 . The pH response and oil–water separation demonstrated excellent repeatability. Specially, the pH responsiveness was maintained for up to 10 cycles, and the oil–water separation remained repeatable for up to 15 cycles. Even when tested under various environmental conditions, the superhydrophobicity was retained. Additionally, the fabric possessed remarkable antibacterial property with an efficiency reaching 90.4%. The preparation of the superhydrophobic fabric serves as a valuable reference for developing multifunctional and stable intelligent materials for oil–water separation. Graphical abstract
研究领域:
材料科学
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环境工程
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产品关联
DOI
高影响因子
Chemical Engineering Journal Advances
·
2023
·
IF 0
Juan Bao,Tingting Zhang,Shiying Wu,Chunhu Tan,Chang Liu,Lingling Wang,Weihua Li,Xianhuai Huang,Jiansheng Li,Rui Lu
Ag nanoparticles (AgNPs) are toxic and can accumulate in the human body or the environment, resulting in biotoxic effects. Ti 3 C 2 T x , a new class of graphene-like 2D nanomaterials, is used in numerous applications due to its special physicochemical properties. There is great concern about the potential damage that this material may cause to the environment and human health. In this study, the interaction mechanisms of Ti 3 C 2 T x , AgNPs and Ti 3 C 2 T x /AgNPs materials with human serum albumin (HSA) were characterized using multispectral analysis and zeta potential measurements, respectively. The results showed that the effects of the three materials on the conformational changes of HSA were AgNPs > Ti 3 C 2 T x /AgNPs > Ti 3 C 2 T x in order. Hydrogen bonding and electrostatic interaction forces played an important role in the binding process of Ti 3 C 2 T x and its complexes with HSA. Ag nanoparticles have a comparatively high level of biotoxicity and have a more significant effect on the conformational changes of proteins. Ti 3 C 2 T x itself has biocompatibility and a large specific surface area. The biotoxicity of Ti 3 C 2 T x /AgNPs complex is lower than that of AgNPs, indicating that the addition of Ti 3 C 2 T x can reduce the biotoxicity of Ag nanoparticles, and Ti 3 C 2 T x may be used as a carrier substance for Ag nanoparticles, which can reduce the toxicity of AgNPs while giving it unique properties similar to those of Ti 3 C 2 T x , thus improve the biosafety of Ag nanoparticles in the application process.
研究领域:
生物化学
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纳米医学
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环境科学
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DOI
BIOMACROMOLECULES
·
2026
·Vol. 27
·期 8
·5725-5741
·
IF 5.9
Wang Nengqing,Li Linying,Wang Mingyang,Gao Ya,Wang Yingbo
Microenvironmental imbalance and bacterial infection
are core causes
of intractable chronic wounds by hindering nutrient transport and
tissue repair. Herein, we innovatively fabricated a hydrophilic antibacterial
scaffold based on silk fibroin (SF) and uniformly integrated it into
PEGDA microneedle (MN) matrices. The composite MN system can efficiently
load hydrophilic model drugs including lidocaine and rhodamine B,
achieving uniform drug incorporation and improved drug-loading versatility
with controllable, long-term sustained drug release behavior. Biological
tests verified that the developed MN possesses excellent broad-spectrum
antibacterial capacity against Staphylococcus aureus and Escherichia coli . It also exhibits
favorable biocompatibility without obvious cytotoxicity and effectively
promotes cell migration. In vivo experiments on full-thickness skin
defect models demonstrated that the MN remarkably accelerates wound
healing and optimizes healing quality. This work offers an innovative
technical strategy for antibacterial drug delivery microneedles, holding
great potential for clinical chronic wound treatment.
✓ 已验证
DOI
PubMed
高影响因子
CONSTRUCTION AND BUILDING MATERIALS
·
2025
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IF 8
Xue Wang,Tingjun Wang,Chengsheng Gui,Hanxiang Guo,Haili Chen
s Bamboo is a sustainable and renewable material. However, its high hydrophilicity and nutrient-rich composition make it highly susceptible to microbial colonization. In this study, a simple two-step strategy was employed to fabricate stable nano-silver particles (AgNPs) containing polymer composites on bamboo surfaces to enhance antibacterial and anti-mold properties. L-3,4-dihydroxyphenylalanine (L-DOPA) was modified onto the bamboo surface via self-polymerization, providing catechol groups capable of chelating and reducing Ag⁺ ions in situ to form AgNPs. The incorporation of polyethyleneimine (PEI) into the L-DOPA could further promote AgNPs formation and enhance stability of the composite coating. The resulting BT/L-D/PEI/Ag sample was systematically characterized by SEM, XRD, FTIR, XPS, EDS, and water contact angle measurements. The results confirmed that L-D/PEI/Ag polymer composites were successfully coated onto the bamboo surface, and the BT/L-D/PEI/Ag exhibited a significantly enhanced silver loading (6.68 wt%) compared to the BT/L-D/Ag (2.97 wt%), corresponding to a 125 % increase. The modified surface showed improved hydrophobicity with a contact angle of 94.7°, effectively inhibiting microbial adhesion. Antibacterial tests revealed that the BT/L-D/PEI/Ag achieved complete (100 %) inhibition against Escherichia coli ( E. coli ) and Staphylococcus aureus ( S. aureus ), as well as superior antifungal activity against Aspergillus niger ( A. niger ). The synergistic interaction between L-D, PEI and Ag formed an efficient antimicrobial coating, providing a promising strategy for the development of high-value, antimicrobial bamboo materials for sustainable construction and consumer products.
研究领域:
材料科学
·
表面工程
·
纳米技术
·
抗菌技术
·
可持续材料
✓ 已验证
产品关联
DOI
高影响因子
Small
·
2024
·Vol. 20
·期 31
·2310191
·
IF 13
Zuoxiang Xie,Lei Yao,Houzhi Fang,Zhi Yang,Xuemei Zhou,Lin Lin,Junwen Xie,Yinhang Zhang
Wearable heaters with multifunctional performances are urgently required for the future personal health management. However, it is still challengeable to fabricate multifunctional wearable heaters simultaneously with flexibility, air-permeability, Joule heating performance, electromagnetic shielding property, and anti-bacterial ability. Herein, silver nanoparticles (AgNPs)@MXene heterostructure-decorated graphite felts are fabricated by introducing MXene nanosheets onto the graphite felts via a simple dip-coating method and followed by a facile in situ growth approach to grow AgNPs on MXene layers. The obtained AgNPs@MXene heterostructure decorated graphite felts not only maintain the intrinsic flexibility, air-permeability and comfort characteristics of the matrixes, but also present excellent Joule heating performance including wide temperature range (30–128 °C), safe operating conditions (0.9–2.7 V), and rapid thermal response (reaching 128 °C within 100 s at 2.7 V). Besides, the multifunctional graphite felts exhibit excellent electromagnetic shielding effectiveness (53 dB) and outstanding anti-bacterial performances (>95% anti-bacterial rate toward Bacillus subtilis, Escherichia coli and Staphy-lococcus aureus ). This work sheds light on a novel avenue to fabricate multifunctional wearable heaters for personal healthcare and personal thermal management.
研究领域:
材料科学
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生物医学工程
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Sustainable Chemistry & Engineering
·
2019
·
IF 6.97
Jia Ke,Yingnan Zhu,Jiamin Zhang,Jing Yang,Hongshuang Guo,Weiqiang Zhao,Chiyu Wen,Lei Zhang
Silk is an attractive natural fiber due to its excellent mechanical properties and biocompatibility. Xenobiotic modification of pristine silk is gaining significant attention to meet specific demands. The silk payload of xenobiotics is affected by their uptake efficiency, biodistribution, metabolism, and excretion. Herein, we systematically evaluated the effect of the nanoparticle size (20–100 nm) on the biodistribution and silk production by introducing silver nanoparticles (AgNPs) into the silkworm diet. Interestingly, the silk payload of AgNPs is highly dependent on their overall size, where 50 nm AgNPs are prone to accumulate in silk glands and reveal the highest content in the produced silk, qualifying silk antibacterial activity against both Gram-positive and Gram-negative bacteria. These findings provide new insights to understand how nanoparticle properties influence the incorporation of nanomaterials into silk and can help optimize the material design.
研究领域:
生物材料学
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纳米生物学
·
昆虫学
✓ 已验证
DOI
高影响因子
FOOD CHEMISTRY
·
2024
·
IF 8.5
Xiaotong Wang,Simin Xuan,Keying Ding,Peng Jin,Yonghua Zheng,Zhengguo Wu
Uncontrolled antibacterial, insufficient barrier and low strength are the bottlenecks of food packaging applications. Herein, Ta 4 C 3 T x nanosheet as a template was used to prepare Ta 4 C 3 T x immobilized silver nanoparticles (Ta 4 C 3 T x -AgNPs), which was compounded with nanocellulose to obtain high-strength and high barrier controllable bactericidal nanocellulose-based bioplastic packaging (CTa-Ag). The results indicated that due to the hydrogen bonding between nanocellulose and Ta 4 C 3 T x , the bridging effect of QCS (quaternized chitosan) and the filling of Ta 4 C 3 T x -AgNPs, the CTa-Ag had tightly stacked microstructure, which endowed them with excellent mechanical properties (4.0 GPa), ultra-low oxygen permeability (0.009 cm 3 /m 2 ·d·atm) and stable photothermal conversion efficiency. Importantly, the packaging exhibits the ability to control the release of antibacterial active ingredients. Moreover, the synergistic effects of controllable release of nano active factors, photothermal and photocatalysis in CTa-Ag gave it long-lasting antibacterial properties . This study brings new insights into the design and manufacture of multifunctional, controllable and long-lasting antibacterial bioplastic food packaging.
研究领域:
食品科学
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材料科学
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生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF IMMUNOLOGICAL METHODS
·
2022
·
IF 2.287
Ren Qiu,Wendi Mu,Chunyan Wu,Mengdie Wu,Jing Feng,Shengzhong Rong,Hongkun Ma,Dong Chang,Hongzhi Pan
CA125 is a tumor marker which mainly exists in ovarian, the detection for it with high sensitivity is conducive to improve the effectiveness of tumor prevention and control at early state. Multi-layer graphene oxide derivatives from graphene, and has poor conductivity and high stacked properties that limit its further application. Multi-layer reduced graphene oxide frame (MrGOF) was composed of single-layer graphene sheet and exhibited 3D structure with good dispersion, better conductivity and electrochemical properties after multi-layer graphene oxide underwent alkaline peeling and thermally reduction, the modified graphene are easy to load and combine functional groups and metal nanoparticles. Covalent organic frameworks (COFs) presents a stable frame and through covalent bond connection and has porous properties to adsorb biomolecules , which allows the immobilization of antibody molecules by the porosity and improve the sensitivity of the detection in sensing field. Through the adsorption of COFs for antibody and the probe labeled with functional graphene, we constructed a sandwich type immunosensor with the new material COF-LZU1 as the platform to anchor the CA125 first-antibody and MrGOF combined with amino group and loaded with silver nanoparticles (AgNPs) as the probe to detect tumor marker CA125. The linear range of detection was from 0.001 U/mL to 40 U/mL, with the detection limit was calculated to be 0.00023 U/mL (S/N =3). The prepared immunosensor showed a good application ability for real human serum, which can be attributed to the adsorption of COF-LZU1 for the CA125 first-antibody, and ability to deliver electrons and signal amplification of AgNPs anchored on the sheet structure of MrGOF.
研究领域:
生物传感器
·
材料科学
·
分析化学
·
癌症研究
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Jing Jin,Yu Ren,Hua Zhou,Yujie Hou,Peng Jin,Yonghua Zheng,Zhengguo Wu
Berries, being juicy and thin-skinned, are prone to mechanical damage and microbial contamination during transportation. Therefore, developing functional cushioning packaging becomes crucial to minimize product losses. Herein, modified MXene was used to immobilize silver nanoparticles (AgNPs) and graft trans -2-hexenal (E2H), synthesizing MXene-NH 2 /AgNPs/E2H preservative. Subsequently, the CPMAE aerogel buffer packaging was obtained by MXene-NH 2 /AgNPs/E2H, chitosan and polyvinyl alcohol, and then using to the strawberry preservation. The physical entangling, electrostatic and hydrogen bonding between chitosan and polyvinyl alcohol, as well as the interaction with MXene-NH 2 /AgNPs/E2H endow CPMAE aerogel excellent buffering properties. Besides, only about 67.40 % of E2H and 5.80 % of AgNPs were released from the CPMAE aerogel after 7 days. Although the immobilization of MXene-NH 2 significantly reduced the release rate of AgNPs and E2H, the CPMAE aerogel still had excellent antioxidant (36.5 μg FeSO 4 /5 mg) and antimicrobial (reaches 99 %) capabilities. Moreover, these features enable the CPMAE aerogel buffer packaging to have an efficient fresh-keeping effect on strawberries and extend the storage time at 4 ℃ to 12 days. This study offers a novel approach for applying chitosan aerogel in buffer and antimicrobial packaging for berries.
研究领域:
食品科学
·
材料科学
·
生物工程
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2017
·
IF 5.401
Chao Zhang,Zhe Li,Shou Zhen Jiang,Chong Hui Li,Shi Cai Xu,Jing Yu,Zhen Li,Ming Hong Wang,Ai Hua Liu,Bao Yuan Man
We present a U-bent fiber optic SPR sensor based on the graphene/AgNPs, combined the virtues of graphene, AgNPs and U-bent fiber. By changing the laser-induced time, we achieved the optimal time for the deposition of AgNPs. With the proposed graphene/AgNPs U-bent fiber optic sensor, we discussed and investigated the SPR behaviors. The shifts up to 32 and 16 nm are observed respectively for the detection of 90% aqueous ethanol and 20% aqueous glucose, corresponding refractive index (RI) 1.3657 and 1.3557. The sensitivity of this proposed is calculated as 1198 nm/RIU and the response and recovery time of this U-bent fiber optic sensor are respectively 3 s and 80 s. These experimental results indicate that our proposed graphene/AgNPs U-bent fiber optic sensor will be expected to open new avenue for the detection in the field of medicine, biotechnology and food safety.
研究领域:
生物医学工程
·
光学传感
·
材料科学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）