JOURNAL OF MATERIALS SCIENCE
·
2025
·
IF 3.9
Liu Hongxu,Xie Junhao,Sun Shulin
In recent years, piezoelectric–photocatalytic materials have attracted significant attention due to their potential to address environmental pollution issues in a straightforward, effective and sustainable manner. In this paper, Ag nanoparticles are successfully immobilized on the surface of ZnO, and a multifunctional PVDF-based water treatment membrane with piezoelectric–photocatalytic performance is constructed for the first time by combining the prepared ZnO@PDA-Ag composite nano-photocatalysts with the PVDF-g-IL piezoelectric matrix. The distinctive structure of ZnO@PDA-Ag enhances charge separation in the photocatalytic process, effectively promoting the photocatalytic activity of ZnO. The grafting IL onto PVDF chain segments induces a transformation of the polar crystalline phases within the PVDF. The synergistic effect of both results in significant improvements to the membrane’s porosity, increasing the permeate flux. The PVDF-g-IL/ZnO@PDA-Ag membrane demonstrates a high degree of efficiency in the removal of various dyes with an approximate removal efficiency of 100%. Furthermore, the PVDF-g-IL/ZnO@PDA-Ag membrane displays piezoelectric polarization, resulting in the formation of a built-in electric field when exposed to ultrasound, which enhances electron–hole separation and transfer efficiency. The membrane is capable of degrading approximately 98% of the dye within a 90-min degradation experiment. Finally, the PVDF-g-IL/ZnO@PDA-Ag membrane exhibits excellent mechanical stability even after multiple self-cleaning and recycling cycles.
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高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN MEDICINE
·
2025
·
IF 4.5
He Bin,Fang Jiale,Huang Haitao,He Zhengcheng,Chen Wangzhen,Ma Jianjun,Wu Hongwei
Implant-associated infections (IAIs) are severe complications following orthopedic procedures involving implanted materials. Previous researchers had created various antibacterial coatings to prevent early postoperative infections. Nevertheless, these coatings frequently lack the wear-resistant properties necessary for long-term effectiveness, and their production process is intricate. To overcome this challenge, we developed and employed a chemical technique, incorporating Ag or Cu 2 O nanoparticles uniformly into the surface of titanium alloys to confer antibacterial properties. The microstructure and elemental composition of the coating were characterized using scanning electron microscopy (SEM) and energy-dispersive spectroscopy (EDS). Our results demonstrated that the coating exhibited potent antibacterial activity, eliminating nearly all adhered bacteria within the first 6 hours. Prolonged friction test results revealed that the coating retained notable antibacterial activity and excellent biocompatibility. Notably, the straightforward fabrication process of this coating could allow for its application on implants of various shapes and materials, underscoring its potential for broad clinical adoption. In summary, this simple chemical method for surface modification of titanium alloys could provide long-lasting antibacterial properties, offering a cost-efficient and transformative strategy for preventing implant-associated infections. Graphical A. Preparation and characterization of the Ag or Cu2O nanoparticle coatings based on titanium alloy. This simple chemical deposition method for surface modification of titanium alloys provides long-lasting antibacterial properties and wear resistance. B. In-vitro antibacterial activity assay. The number of bacteria on the Ag and Cu-coated samples was significantly reduced compared to the control group. The bacterial surfaces in the samples showed significant damage, such as rupture, collapse, and distortion. C-D. In-vivo antibacterial assay of the acute osteomyelitis models and subcutaneous infection models. These nanoparticle coatings exhibit excellent in vivo antibacterial properties and maintain favorable antibacterial efficacy even after prolonged wear. Created in BioRender. Fang, J. (2025) https://BioRender.com/v64b128
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PubMed
高影响因子
Catalysts
·
2025
·Vol. 15
·期 3
·231
·
IF 4
Tianwei Dou,Yangyang Zhu,Zhanyu Chu,Zhijun Li,Lei Sun,Liqiang Jing
Solar-driven catalytic oxidation processes for the removal of toxic gaseous pollutants have attracted considerable scientific attention, and there is a strong desire to improve the mass transfer, photogenerated charge separation, and O2activation by regulating the structure of the photocatalyst. Initially, functionalized graphene–TiO2mesoporous hollow nanofibers have been controllably fabricated by a coaxial electrospinning technique, in which functionalized graphene is controllably prepared through a sequential diazonium functionalization and silane modification and ensures its uniform distribution among TiO2nanoparticles (NPs). Subsequently, the ultrafine Ag NPs are primarily anchored onto the surface of graphene by an in situ frozen photodeposition strategy, producing Ag/functionalized graphene–TiO2mesoporous hollow nanofibers (Ag/SiG-TO MPHNFs). The optimal Ag/SiG-TO MPHNFs exhibit 3.9-fold and 4.6-fold enhancements in CO photooxidation compared with TO MPHNFs and P25 TiO2, respectively. The enhanced photoactivity can be attributed to three factors: the creation of the mesoporous hollow structure accelerates mass transfer, the incorporation of graphene facilitates the transfer of photogenerated electrons from TiO2to graphene, and the anchoring of Ag NPs improves O2activation.
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高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Wei Wu,Nana Liu,Xiaohui Sun,Xueying Zhao,Quan Yuan,Xuyang Zhang,Bo Wang,Li'e Mo,Xiangwei Wang,Xianhui Rong,Guohua Wu
Polymer dispersed liquid crystals (PDLC) could function as an energy-efficient smart window, enabling the reversible transition between transparent and opaque states when applied bias voltages. However, the requirement for high switching voltages presents a challenge, resulting in severe energy consumption that contradicts objectives for sustainable energy conservation and emission reduction. Herein, this study synthesizes barium titanate/methyltrimethoxysilane/silver (BTO/MPTMS/Ag) composites successfully and incorporates it into the PDLC, designing for the low-energy-consumption smart window. Barium titanate nanowires (BTO NWs) enhance the dielectric constant of the PDLC film, while Ag nanoparticles (Ag NPs) exploit localized surface plasmon resonance (LSPR) to amplify the local electric field. Consequently, this synergistic effect of BTO NWs and Ag NPs reduces the threshold voltage and the saturation voltage to 10 V and 19 V, corresponding to decreases of 60 % and 62 %, respectively. Significantly, experiential results confirm that the incorporation of BTO/MPTMS/Ag nanoparticles does not affect the electro-optical nature of the PDLC film adversely. The work provides a promising approach for the preparation of advanced optical devices and energy-efficient equipment.
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Materials Research Express
·
2021
·Vol. 8
·期 5
·056519
·
IF 1.62
Yanqing Xue,Qitang Hao,Bo Li,Xinliang Wang,Chengze Yin,Han Zhang
To surmount the longstanding puzzle of strength-ductility trade-off, efforts had been made to apply Mg - Ag microalloying on 5%TiB2/Al-4.5%Cu composites by in situ molten salt reaction and subsequent heat treatment. The obtained composites achieve an eye-catching tensile elongation (δ) of 6.1 ± 0.4%, while maintaining elevated ultimate tensile strength (UTS) of 497 ± 4 MPa and yield strength (YS) of 401 ± 3MPa. Comprehensive characterization demonstrated that the uniformly distributed TiB2 particles together with semi-coherent grain boundaries between the α-Al matrix and reinforcement phase (TiB2 particles, Ω-Al2Cu, σ-Al5Cu6Mg2) facilitated the dislocation motion integrally, which eliminated the stress concentrations, may be the main reason for amelioration in the strength-ductility trade-off of the composites when subject to rigorous multi-step heat treatment.
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高影响因子
ACS Sustainable Chemistry & Engineering
·
2021
·
IF 8.198
Dan Lin,Lingfei Li,Xin Song,Shihao Xu,Qianru Zhang,Zhong Hu,Liang Yang,Changlong Jiang
The present work reports a fluorescent sensor by utilizing a composite Rhodamine B-Ag@Au nanoprobe for the visual and semi-quantitative assay of organophosphorus pesticide (OP) residues via a “light up” sensing phenomenon. Core–shell structured Ag@Au NPs can directly quench the orange fluorescence of Rhodamine B (RB) at 580 nm based on Förster resonance energy transfer. Due to the stronger coordination ability of Ag@Au NPs with OPs, OP residues can displace RB from the surface of Ag@Au NP; thus, the RB fluorescence can effectively recover. Under optimum conditions, the composite fluorescent nanoprobe shows sensitive responses to OP residues in the range of 0.001–0.4 μM with a sensitive detection limit (LOD) of 7.89 nM. Moreover, combined with the smartphone color recognizer application (APP), the ratio of fluorescence intensity response is recorded on the green channel (G)/red channel (R), which has been employed for visual quantitative determination of OPs with an LOD of 16.3 nM. This proposed light up fluorescent sensor is also applied to OP residue identification in real water and agricultural samples with highly promising performance. The method reported here provides a convenient pathway for rapid and visual detection of pesticide residues utilizing organic composite nanomaterials.
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高影响因子
NEW JOURNAL OF CHEMISTRY
·
2024
·Vol. 48
·期 38
·16683-16691
·
IF 2.7
Xiaoyu Cao,Huifang Yang,Jihui Luo,Jianxian Zeng,Zhanfang Cao,Xiaoping Huang
Highly efficient and selective extraction of silver ions from wastewater remains a formidable challenge in ensuring public health and protecting ecosystems. Herein, an acyl-based thiourea extractant known as N-benzoyl-N′,N′-dibutyl thiourea (BDBTU) was used for the selective extraction of silver ions from aqueous solution by a solvent extraction method. BDBTU displayed an outstanding extraction efficiency of Ag(I) with an extraction ratio of 96.7% under the optimal extraction conditions, surpassing its effectiveness for Cu(II) and Mn(II) ions. In addition, BDBTU retained high effectiveness even after undergoing eight regeneration cycles, with only a slight decrease in the extraction efficiency from 96.7% to 95.2%. Moreover, it displayed selective extraction towards Ag(I) ions under the interference of metal ions (i.e., Cu(II), Pb(II), Mn(II), Zn(II), Ni(II), Co(II) and Na(I)). The investigation into the extraction mechanism of BDBTU towards Ag(I) unveiled that BDBTU provided a high affinity for Ag(I) accompanied by the formation of Ag–O–C and Ag–S–C bonds. These results indicated that the exceptional extraction stability and selectivity of BDBTU offer promising prospects for diverse applications, highlighting its potential in silver-containing wastewater treatment fields.
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JOURNAL OF FOOD COMPOSITION AND ANALYSIS
·
2021
·
IF 4.556
Guangxin Lv,Beichen Shi,Hong Huang,Haodong Chen,Huajie Feng,Pan-Pan Zhou,Weichun Ye,Zhifei Zhang,Zhaoyong Yang
NiO nanoparticles (NPs) with small Ag NPs loading supported on reduced graphene oxide nanosheets (ternary NiO/Ag/RGO nanocomposites) were synthesized via a hydrothermal process followed by high-temperature calcination, extending the synergistic effects among noble metal, metal oxide and carbon materials. Based on ternary NiO/Ag/RGO nanocomposites, a new electrochemical sensor was fabricated for the detection of sunset yellow (SY) in soft drinks through cyclic voltammetry, Tafel plot and differential pulse voltammetry. The experimental conditions were optimized and kinetic parameters studied. Due to the synergistic effect of the ternary components, the prepared sensor exhibited superior electroanalytical performance toward SY detection, including wide linear range from 0.1 to 50 μM and from 50 to 450 μM, low detection limit of 13 nM, excellent specificity against various interfering colorants, good reproducibility and stability. Importantly, the electrochemical sensors was successfully employed for quantitative SY analysis in soft drinks with satisfactory recoveries, where the analyzed results were also in agreement with LC/MS analysis.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Teng Chen,Xin Li,Qiyuan Wang,Ye Li,Le Xu,Yihang Yang,Yunfan Qiao,Yuchen Dai,Jie Ke,Hongri Wan,Shuai Zhou,Zhaojian Gao
The frequently encountered wastewater contaminations, including soluble aromatic compound and dye pollutants, pathogenic bacteria, and insoluble oils, have resulted in significant environmental and human health issues. It poses a challenge to utilize identical materials for the treatment of complex wastewater. Herein, in this research, multifunctional Ag NPs/guar gum hybrid hydrogels were fabricated using a facile in situ reduction and self-crosslinking method for efficient remediation of complex wastewater. The Ag NPs/guar gum hybrid hydrogel showed remarkable remodeling, adhesive, and self-healing characteristics, which was favorable for its versatile applications. The combination of Ag NPs with the guar gum skeleton endowed the hybrid hydrogel with exceptional catalytic activity for reducing aromatic compounds and dye pollutants, as well as remarkable antibacterial efficacy against pathogenic bacteria. In addition, the Ag NPs/guar gum hybrid hydrogel could be employed to coat a variety of substrates, including cotton fabrics and stainless steel meshes. The hydrogel coated cotton fabrics and meshes presented superhydrophilicity/underwater superoleophobicity, excellent antifouling capacity, and outstanding recyclability, which could be successfully applied for efficient separation of oil-water mixtures. The findings of this work provide a feasible and cost-effective approach for the remediation of intricate wastewater.
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ACS Applied Energy Materials
·
2021
·
IF 6.024
Ziling Wang,Xianzhu Peng,Shuai Guo,Mingjie Sun,Junfang Cheng,Lu Zou,Bo Chi,Jian Pu
Catalysts with high oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) performances are crucial to the development of lithium-oxygen batteries (LOBs), which aim to promote Li2O2 deposition and decomposition and then avoid the active site passivation. Considering the metallic Ag possessing good electrical conductivity and excellent catalytic activity and perovskite oxides exhibiting high abundance, an easily tunable structure, and excellent intrinsically catalytic activity, we adopt the ultraviolet light to realize the deposition of Ag nanoparticles on the La0.6Sr0.4Fe0.9Mn0.1O3 (LSFM) substrate as a high-performance cathode for LOBs. The results confirm that the synergetic effect of Ag nanoparticle decoration and the La0.6Sr0.4Fe0.9Mn0.1O3 substrate could dramatically improve the electronic conductivity and ORR/OER kinetics of the nanohybrids. Ag@LSFM hybrids with abundant active sites and considerable electronic conductivity promote the deposition of a thinner discharge product film, and the corresponding LOBs deliver high discharge capacity (12 477 mAh g–1), a small gap between charge and discharge potentials (∼1.3 V), and high cycling stability (147 cycles). Overall, the study suggests that such a bifunctional catalyst is a promising candidate in LOBs.
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高影响因子
LETTERS IN APPLIED MICROBIOLOGY
·
2024
·Vol. 77
·期 7
·
IF 2
Tan Xiqian,Pei Jianbo,Zhang Defu,Cui Fangchao,Wang Dangfeng,Li Xuepeng,Li Jianrong
Hafnia sp. was one of the specific spoilage bacteria in aquatic products, and the aim of the study was to investigate the inhibition ability of the silver nanoparticles (AgNPs) biosynthesis by an aqueous extract of Prunus persica leaves toward the spoilage-related virulence factors of Hafnia sp. The synthesized P-AgNPs were spherical, with a mean particle size of 36.3 nm and zeta potential of 21.8 ± 1.33 mV. In addition, the inhibition effects of P-AgNPs on the growth of two Hafnia sp. strains and their quorum sensing regulated virulence factors, such as the formation of biofilm, secretion of N-acetyl-homoserine lactone (AHLs), proteases, and exopolysaccharides, as well as their swarming and swimming motilities were evaluated. P-AgNPs had a minimum inhibitory concentration (MIC) of 64 μg ml−1 against the two Hafnia sp. strains. When the concentration of P-AgNPs was below MIC, it could inhibit the formation of biofilms by Hafnia sp at 8–32 μg ml−1, but it promoted the formation of biofilms by Hafnia sp at 0.5–4 μg ml−1. P-AgNPs exhibited diverse inhibiting effects on AHLs and protease production, swimming, and swarming motilities at various concentrations.
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PubMed
高影响因子
Journal of Materials Chemistry A
·
2022
·Vol. 10
·期 42
·22791-22802
·
IF 14.511
Xing-Ye Chen,Muhammad Ishaq,Nafees Ahmad,Rong Tang,Zhuang-Hao Zheng,Ju-Guang Hu,Zheng-Hua Su,Ping Fan,Guang-Xing Liang,Shuo Chen
The existence of various detrimental defects inside the absorber layer is a major obstacle limiting the performance of kesterite Cu2ZnSn(S,Se)4 (CZTSSe) thin-film solar cells. Cationic substitution is a viable strategy for overcoming this challenge and has drawn tremendous research attention. In this work, a dual-cation substituted CZTSSe involving Ag and Ti to separately occupy partial Cu and Sn lattice sites is proposed. Under 6% Ag and 1% Ti dual-cation substitution, the champion CZTSSe device delivers a highly interesting efficiency of 12.73%, accompanied by an outstanding VOC of 530 mV. Further investigation demonstrates that Ag introduction can improve the density and crystallinity of CZTSSe thin films while decreasing the concentration of CuZn acceptor defects. Further Ti substitution can effectively eliminate fine grains and reduce the defect density of CuSn and [2CuZn + SnZn] defects, as well as the core level defects. This work explores the synergistic effect of Ag, Ti dual-cation substitution in CZTSSe solar cells for the first time, and the clarified device performance improvement mechanism opens up promising possibilities for the bright development of CZTSSe thin-film photovoltaic technology.
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