Journal of Coatings Technology and Research
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2026
·
IF 3.4
Xiao Dingwen,Zhang Huidong,Fang Yueguang,Wang Ziran,Xiu Lanling,Ye Junwei
Textiles are susceptible to microbial colonization due to prolonged accumulation of organic residues, such as sweat and skin secretions. These residues serve as nutrients for pathogenic growth, elevating the risk of infection in everyday environments. To mitigate, we developed a composite coating with persistent antibacterial properties by grafting polyethyleneimine (PEI) onto PET fabric surfaces followed by Cu(II) coordination. The functionalized fabrics (PET-PEI-Cu) exhibited exceptional antibacterial efficacy, achieving a bacteriostatic rate exceeding 99.99% against both Gram-negative Escherichia coli and Gram-positive Staphylococcus aureus , significantly outperforming commercial PET fabrics. Furthermore, PET-PEI-Cu demonstrated excellent laundering durability, retaining its antibacterial efficacy even after 50 repeated washing cycles. With its sustained antimicrobial activity, this fabric holds promise for reducing bacterial contamination in hospital bedding. This could help mitigate cross-infection risks, reduce the disinfection burden on healthcare staff, and lower operational costs. This work provided a scalable strategy for preparing high-performance, long-lasting antibacterial textiles with broad application prospects in healthcare and public health. Graphical abstract
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高影响因子
MICROCHEMICAL JOURNAL
·
2026
·
IF 5.2
Siqi Zhang,Xiao Li,Yinhui Yi,Zixiang Liao,Yue Ren,Kunqi Fan,Zhiyuan Wang,Pengpeng Yu,Libo Li,Tianyan You
Pt NPs was loaded to enhance the laccase-like activity of Cu-based nanozyme. • Design of a three-channel colorimetric sensing array based on the nanozyme. • The array enabled the simultaneous identification and detection of multiple phenol. • The developed sensor array showed superior analytical ability for phenol detection. Phenolic compounds represent a class of hazardous environmental pollutants characterized by high toxicity, low biodegradability, and a strong tendency to bioaccumulate, leading to considerable risks for ecological safety and human health. In this work, a novel bimetallic nanozyme Pt@GA-Cu was synthesized by loading platinum nanoparticles (Pt NPs) onto a copper-based laccase-like material. The synergistic interaction between Pt and Cu significantly enhanced the electron transfer rate and catalytic efficiency, resulting in better laccase-like performance than that of the individual materials. By this enhanced performance, a time-dependent three-channel colorimetric sensor array was constructed. With the integration of machine learning (ML), specifically linear discriminant analysis (LDA) and hierarchical cluster analysis (HCA), the as-developed sensor successfully not only distinguished four distinct phenolic compounds (2,4-DP, 4-cP, CAT, and 2,6-DMP) with high accuracy, but also exhibited exceptional discriminative capabilities even when deployed within intricate multi-component phenolic solutions. Furthermore, to evaluate the functionality of the sensor in practical condition, real water samples were tested using standard addition methods, and satisfactory recovery rates (93.15–112.5%) and low relative standard deviations (<2.2%) were obtained. This study provides an efficient and reliable strategy to rapidly detect and differentiate among various phenolic pollutants, offering considerable potential for environmental monitoring applications. A Pt-loaded Cu nanozyme-based time-dependent colorimetric array with machine learning simultaneously discriminates and detects four phenolic pollutants. Download: Download high-res image (179KB) Download: Download full-size image
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2023
·
IF 6.2
Sujuan Wang,Qing Luo,Xiaohua Luo,Shengcan Ma,Changcai Chen,Fei Gao,Bodong Lv,Rui Zhong,Weijun Ren,Zhenchen Zhong
The effects of Si and Cu doping on crystal structures, magnetism , and the magnetocaloric effect of EuAl 4 have been investigated. EuAl 4 , EuAl 3.35 Si 0.65 , and EuAl 3.82 Cu 0.18 single crystals grown by the Al flux method are isotypic and crystallize in BaAl 4 -type structure with space group I 4 /mmm . Compared to the pristine compound EuAl 4 , the lattice parameter a keeps almost unchanged and c decreases obviously by Si doping, while a decreases and c increases upon Cu-substitution. These irregular changes in the lattice parameters may contribute to the electronegativity difference between Si and Cu. Cu and Si doping enhances the ferromagnetic interaction, and the direction of easy magnetization changes from the ab plane to the c axis upon the Cu-substitution. Multiple-step metamagnetic transitions are still observed in EuAl 3.35 Si 0.65 as applying the magnetic field along the c axis, while EuAl 3.82 Cu 0.18 shows ferromagnetic behavior along the ab plane and c axis. As a consequence, the low-field magnetocaloric effect is significantly enhanced. The maximum magnetic entropy change under a field change of 20 kOe increases from − 8.4 J/kg K for EuAl 4 to − 12.9 J/kg K for EuAl 3.35 Si 0.65 and − 15.9 J/kg K for EuAl 3.82 Cu 0.18 . The corresponding values of refrigerating capacity are 67, 140, and 147 J/kg, respectively. The remarkable magnetocaloric performances suggest that the Cu-doped EuAl 4 compound is an excellent candidate material for low-temperature magnetic refrigeration.
研究领域:
凝聚态物理
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材料科学
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磁学
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低温物理
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功能材料
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高影响因子
ELECTROCHIMICA ACTA
·
2016
·
IF 4.803
M.Y. Gao,C. Yang,Q.B. Zhang,Y.W. Yu,Y.X. Hua,Y. Li,P. Dong
Porous Ni-Cu alloy films composed of nanosheets are directly fabricated on Cu substrate using a facile potentiostatic electrodeposition approach from a 1:2 choline chloride-ethylene glycol eutectic solvent (ethaline) containing nickel chloride and copper chloride. Electrochemical co-deposition of Ni-Cu alloy in ethaline is found to be thermodynamically favorable in comparison to conventional aqueous solutions. The deposition process occurs via an instantaneous nucleation and growth of nanoparticles at the initial stage and develops vertically to form nanoporous structures arrayed with nanosheets over deposition time . The as-prepared porous Ni-Cu alloy nanosheet arrays exhibit enhanced electrocatalytic activity for the hydrogen evolution reaction (HER) in alkaline media , which displays a small Tafel slope of 57.2 mV dec −1 with a low onset potential of −48 mV vs. RHE at an optimal condition. It requires small overpotentials of −128 and −150 mV to drive catalytic current densities of 10 and 20 mA cm −2 , respectively. This facile electrodeposition method performed in ethaline provides an efficient way to fabricate porous Ni-based alloy nanosheets directly on a current collector, which is a promising technology for the synthesis of earth-abundant HER electrocatalysts .
研究领域:
电催化
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材料科学
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能源化学
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纳米材料
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电化学
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高影响因子
RSC Advances
·
2017
·Vol. 7
·期 72
·45420-45431
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IF 3.108
Jiuli Guo,Huanhuan Yu,Feng Dong,Baolin Zhu,Weiping Huang,Shoumin Zhang
A highly efficient and stable Au–Cu/hydroxyapatite (HAP, Ca10(PO4)6(OH)2) catalyst was reported. HAP was prepared through a deposition–precipitation method. Au–Cu/HAP catalysts were obtained by a two-step impregnation approach. The samples were characterized by XRD, TEM, SEM, UV-Vis, ICP, XPS, H2-TPR, and O2-TPD. CO oxidation reaction was carried out to evaluate the catalytic performance of samples. TEM and UV-Vis results showed that the metallic particles supported on Au–Cu/HAP were smaller than those on Au/HAP, and they were highly dispersed on the HAP support. Patterns of XPS revealed that CuO nanoparticles were formed in the Cu/HAP catalyst, while CuO and Cu2O species coexisted in Au–Cu/HAP catalyst. Based on the O2-TPD data, the addition of copper to Au/HAP gave rise to more new O2 adsorption sites and bigger O2 adsorption capacity. The catalysis results indicated that the Au–Cu/HAP was capable of obtaining higher efficiency and stability compared with Au/HAP and Cu/HAP for CO oxidation. It was likely that the synergistic interaction between gold and CuOx phase created the most active sites on Au–Cu/HAP and was responsible for the enhanced activity and stability in comparison with Au/HAP and Cu/HAP.
研究领域:
催化化学
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材料科学
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环境化学
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纳米催化
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表面科学
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高影响因子
Journal of Materials Chemistry A
·
2020
·Vol. 8
·期 33
·17056-17064
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IF 11.301
Xin-Yu Hu,Pan Xu,Shengwen Deng,Jie Lei,Xiaodong Lin,Qi-Hui Wu,Mingsen Zheng,Quanfeng Dong
Lithium (Li) is a metallic element possessing the most negative electrode potential and the lowest electrochemical equivalent, which make it one of the key materials for the development of the next-generation Li batteries with high specific energy. However, the heterogeneous deposition, volume expansion, solid-electrolyte interphase (SEI) fracture, and high reactivity of metallic Li make its commercialized development difficult. Herein, a novel polyaniline (PANI) decorated three-dimensional (3D) copper mesh (3DCMP) skeleton for a Li metal anode is proposed, which was prepared by in situ polymerizing aniline on the surface of a copper mesh (3DCM). The lithiophilic PANI micro-sheets could induce ordered Li deposition on the mesh and facilitate the formation of a more available SEI film, which could effectively alleviate the formation of Li dendrites and highly promote the utilization of Li during long-term cycling. The symmetrical-cell displayed an excellent Li plating/stripping performance, in which it maintained an overpotential of less than 20 mV at a current density of 2 mA cm−2 over 4000 h. Furthermore, the full-cell coupled with the LiFePO4 cathode exhibited a high capacity retention of 84.8% at 4C after 550 cycles and when coupled with the rGO/S cathode exhibited a capacity retention of 94.4% at 1C after 100 cycles. Hence, it demonstrates a promising potential to be applied in large-scale manufacturing.
研究领域:
材料科学
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电化学
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储能技术
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纳米材料
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电池化学
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高影响因子
JOURNAL OF MATERIALS SCIENCE
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2023
·Vol. 58
·期 48
·18003-18013
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IF 4.5
Yang Yue,Ma Tianhui,Zhang Zheng
Cubic-phase Li 7 La 3 Zr 2 O 12 (LLZO) garnet is considered as a promising solid electrolyte due to high Li-ion conductivity and good chemical stability against electrode material. However, the desired cubic-phase formation of LLZO relies on the doping elements. To further improve the electrochemical performance and control the retention of lithium, a composite solid electrolyte based on Cu and Ta co-doped LLZO was fabricated by flash sintering (FS) in the present work due to the FS process characterized short sintering times and low furnace temperature, which could effectively restrain “Li-loss”. Based on the optimized Ta-LLZO conducted in our previous study, the effects of Cu 2+ content on the ionic conductivity and sintering behavior of the doped composites were discussed. The results show that Cu 2+ doping effectively stabilized the cubic structure of the co-doped composites and simultaneously promotes sinter-ability in FS process. Moreover, it is demonstrated that the room-temperature total conductivity of the Cu and Ta co-doped LLZO solid electrolyte is improved significantly by decreasing the grain boundary resistances and improving the densifications with the increasing of Cu 2+ content. In addition, the maximum ionic conductivity of 2.83 × 10 –3 S cm −1 and relative density 96.6% of the composite with Cu 2+ doping content 0.35 mol could be reached.
研究领域:
材料科学
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固态离子学
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陶瓷材料
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能源材料
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电化学
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DOI
高影响因子
CHEMICAL RESEARCH IN CHINESE UNIVERSITIES
·
2023
·Vol. 39
·期 6
·948-953
·
IF 3.1
Xu Henan,Zhang Lingling,Wang Huilin,Zhang Shaopeng,Li Wei,Wang Xiao,Song Shuyan,Wang Daguang,Shi Zhan
N anozymes have shown great potential for life sciences owing to their distinct advantages, such as low cost and high stability, compared with natural enzymes. Despite significant progress, state-of-art nanozymes commonly suffer from relatively low specific activities. Herein, we propose a promising to address this issue by creating single-atom nanozymes. A ball-milling-assisted strategy has been developed to induce the transformation of Cu species from bulk to single atoms. The highly-simplified steps allow a large-scale synthesis, that over 4.2 g of single-atom Cu−N doped carbon nanozymes can be achieved in one pot. It exhibits a remarkably improved peroxidase-like activity and stability compared with N doped C anchored Cu nanoparticles. Further experimental firmly reveals the crucial role of the single-atom Cu site that can generate more active ·OH species for boosting the catalytic process.
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高影响因子
ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Wenxia Fan,Ani Wang,Lei Wang,Xin Jiang,Zhenzhen Xue,Jinhua Li,Guoming Wang
Delicate design and bottom-up synthesis of hollow nanostructures for oxygen evolution electrocatalysts is a promising way to accelerate the reaction kinetics of overall water splitting. Herein, an efficient and versatile strategy for the controllable preparation of Pd–Cu alloy nanoparticles encapsulated in carbon nanopillar arrays (PD–Cu@HPCN) is developed. Core–shell structured MOF@imidazolium-based ionic polymers (ImIPs) have been prepared and adopted as a template, along with the decomposition of the inner Cu–MOFs when an anion exchange occurs between sodium tetrachloropalladate in solution and bromides in the external ImIP shell. Pd nanoparticles will be highly dispersed in the resulting Pd–Cu@HO-ImIP array, and subsequent topotactic transformation generates Pd–Cu@HNPC. No hazardous reagents or tedious steps are used to remove the inner Cu–MOF templates in contrast to the traditional top-down methods. Remarkably, the Pd–Cu@HPCN catalyst possesses outstanding oxygen evolution reaction (OER) activity, including small overpotential with 10 mA cm–2 at an overpotential of 188 mV, a large double layer capacitance (73.8 mF cm–2), and high stability (20 h). This simple, green, and efficient synthesis methodology represents a new way to design metal alloys for OER electrocatalysts or other electrocatalytic devices.
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DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2023
·
IF 5.2
Yang Jia,Tao Li,Xiaoguang Chen,Haitao Xue,Weibing Guo,Cuixin Chen
Al 2 O 3 ceramic and 304 stainless steel were brazed with AgCuTi filler in this paper. Two kinds of composite filler were prepared by adding Cu foam and Cu foam covered with graphite (Gr-Cu foam) to relieve the residual stress of the joints. The effects of Cu foam pore size on the joints were investigated in detail, and the evolution mechanism of the joints was analyzed. Graphite-reinforced Cu foam was fabricated by spraying graphite for the first time. Results showed that the extremely low coefficient of thermal expansion of graphite and the good energy absorption performance of Cu foam were both conducive to reducing the thermal residual stress during the cooling process. Gr-Cu foam with pre-filled pores was used to solve the problems of structural dissolution of Cu foam and unfilled solder in Cu foam pores to a certain extent. And it played a key role in preventing the diffusion of metal atoms. The graphite on the surface of the Cu foam generated TiC in the brazing seam. The TiC and Cu foam promoted the formation of the TiCu strengthening phase. Furthermore, when the pore size of the Gr-Cu foam was 150 μm, the maximum shear strength of the joint was 246.84 MPa. This value was about 40% higher than that of Cu foam with the same pore size. The residual stresses of joint with and without graphite-reinforced were calculated, respectively, for both conditions. The reduction of residual stress was found after adding the graphite during brazing.
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高影响因子
Acta Biomaterialia
·
2023
·
IF 9.7
Chenyi Huang,Jia Tang,Yuanqi Liu,Ting Chen,Junyang Qi,Shengjie Sun,Huisong Hao,Weiwei Zeng,Jing Zhao,Meiying Wu
Nitric oxide (NO) is a crucial gaseous medium for tumor growth and progression, but it may also cause mitochondrial disorder and DNA damage by drastically increasing its concentration in tumor. Due to its challenging administration and unpredictable release, NO based gas therapy is difficult to eliminate malignant tumor at low safe doses. To address these issues, herein, we develop a multifunctional nanocatalyst called Cu-doped polypyrrole (CuP) as an intelligent nanoplatform ( [email protected] ) to deliver the NO precursor BNN6 and specifically release NO in tumors. Under the aberrant metabolic environment of tumors, [email protected] catalyzes the conversion of antioxidant GSH into GSSG and excess H 2 O 2 into ·OH through Cu + /Cu 2+ cycle, which results in oxidative damage to tumor cells and the concomitant release of cargo BNN6. More importantly, after laser exposure, nanocatalyst CuP can absorb and convert photons into hyperthermia, which in turn, accelerates the aforesaid catalytic efficiency and pyrolyzes BNN6 into NO. Under the synergistic effect of hyperthermia, oxidative damage, and NO burst, almost complete tumor elimination is achieved in vivo with negligible toxicity to body. Such an ingenious combination of NO prodrug and nanocatalytic medicine provides a new insight into the development of NO based therapeutic strategies. Statement of significance A hyperthermia-responsive NO delivery nanoplatform ( [email protected] ) based on Cu-doped polypyrrole was designed and fabricated, in which CuP catalyzed the conversion of H 2 O 2 and GSH into ·OH and GSSG to induce intratumoral oxidative damage. After laser irradiation, hyperthermia ablation and responsive release of NO further coupled with oxidative damage to eliminate malignant tumors. This versatile nanoplatform provides new insights into the combined application of catalytic medicine and gas therapy.
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DOI
PubMed
高影响因子
Regenerative Biomaterials
·
2023
·
IF 6.7
Liu Yuwei,Wang Gang,Luo Huitong,Zhao Bangjiao,Liao Muheng,Dai Qiyuan,Li Maocai,Li Qingtao,Cao Xiaodong
Flexible hydrogels containing various osteogenic inorganic constituents, which can accommodate complicated shape variations, are considered as ideal grafts for craniofacial bone defect reconstruction. However, in most hybrid hydrogels, poor interaction between the polymer network and particles has detrimental effects on hydrogel rheological and structural properties, clinical manipulation and repair efficacy. In this article, we designed and prepared a series of hyaluronic acid composite hydrogel containing Cu-doped bioactive glass (CuBG) and phosphoserine (PS), in which hyaluronic acid was modified by methacrylate groups and phenylboronic acid groups to form a double crosslinked network. PS acted as an interaction bridge of CuBG particles and HAMA-PBA network to improve the mechanical properties of the composite hydrogels. The CuBG/PS hydrogels exhibited suitable rheological properties (injectable, self-healing, shape-adaptable), bone tissue integrating ability and anti-bacterial property. Meanwhile, we found that CuBG and PS have synergistic effect on improving osteogenic efficiency both in vitro and in vivo, particularly when the ratio of CuBG to PS is lower than 3 (9CB/3PS). This work provided a versatile and scalable approach to enhanced the interaction within inorganic particles and polymer network in hydrogels without extra modification on components.
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PubMed
高影响因子
危险品化学品经营许可证（带存储）