CANADIAN JOURNAL OF CHEMICAL ENGINEERING
·
2026
·
IF 1.9
Yuanyuan Hu,Yan Tan,Huangqing Liao,Shiyan Long,Jie Huang,Hui Zhang,Gui Chen,Bailin Xiang
The environmental pollution resulting from organic dye wastewater presents a significant threat to human health. Photocatalysis has emerged as a highly promising approach for mitigating wastewater contamination. In this study, a novel synthetic strategy was developed using NH 2 -UiO-66 as a template. By precisely controlling the amount of Ag + ions introduced into the NH 2 -UiO-66 precursor and employing a straightforward reduction approach, the Ag-NH 2 -UiO-66 composite photocatalyst was successfully synthesized. Comprehensive characterization via X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM), and X-ray photoelectron microscopy (XPS) confirmed that the incorporated Ag+ ions were effectively reduced to metallic silver and uniformly dispersed within the porous framework. Photocatalytic degradation experiments employing Rhodamine B (RhB) as a model pollutant under ultraviolet irradiation demonstrated that the catalyst with a silver loading of 0.05 mol/L achieved a maximum degradation efficiency of 91% within 150 min, markedly surpassing the 39% efficiency exhibited by pristine NH 2 -UiO-66. Furthermore, cyclic stability tests verified the catalyst's excellent reusability and structural durability. Mechanistic investigations revealed that superoxide radicals (O 2 − ) served as the predominant reactive species responsible for RhB degradation in the Ag-NH 2 -UiO-66 system. This work presents a simple and effective strategy for fabricating highly efficient and stable MOF-based photocatalysts for the remediation of dye-contaminated wastewater.
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高影响因子
ACS Nano
·
2026
·
IF 16
Yingde Xu,Yifan Wang,Hongwei Bi,Zhonghui Gao,Wence Xu,Hui Jiang,Zhenduo Cui,Yanqin Liang,Shengli Zhu,Yufeng Zheng,Shuilin Wu,Zhaoyang Li
The underlying mechanisms by which heterogeneous interfaces enhance piezoelectric catalytic effects under ultrasonic irradiation, along with their potential biomedical applications, remain poorly understood. In this study, a versatile Z-Scheme nanoplatform by encapsulating the BiO2-x/Ag3PO4 heterojunction within poly(lactic-co-glycolic acid) (PLGA) microspheres (BA@PLGA) was developed for ultrasound-activated deep-lung antibacterial therapy. The Z-scheme heterojunction synergistically integrates piezoelectric and built-in electric fields, achieving 2.2 and 4.7-fold enhancements in piezoelectric (d33) and electromechanical coupling (k) coefficients, respectively. Ultrasonic-induced dynamic modulation of the piezoelectric potential in BiO2-x/Ag3PO4 generated a “carrier-pumping” effect, which enhanced polarized charge migration efficiency and thereby markedly amplified reactive oxygen species (ROS) production. Consequently, with the assistance of trace Ag+, 99.87 ± 0.05% of methicillin-resistant Staphylococcus aureus (MRSA) were effectively eradicated within 15 min in vitro. Prokaryotic transcriptome analysis further revealed that the synergistic effect of ROS and trace Ag+ disrupted the cell envelope and interfered with the core metabolic pathways of MRSA. This ultrasound-activated platform, integrating piezocatalysis and trace Ag+, achieved over 99.9% bacterial clearance rapidly (1.6log superiority over gentamicin) and alleviated inflammation in a MRSA-induced pneumonia, demonstrating considerable potential for combating bacterial infections in deep-seated tissues.
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PubMed
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2015
·Vol. 40
·期 14
·4777-4785
·
IF 3.313
Jianmin Chen,Zhang-Hui Lu,Yuqing Wang,Xiangshu Chen,Lei Zhang
In this paper, we reported a facile and effective approach for fabrication of SiO 2 –CoFe 2 O 4 supported dispersed Ag nanoparticles (NPs). The as-synthesized nanocomposites (NCs) were characterized by XRD , TEM, EDX, ICP , XPS and N 2 adsorption-desorption, and used as catalyst for H 2 production from hydrolysis of ammonia borane (AB). A poorly active catalyst of Ag NPs was dramatically converted into a highly active catalyst, in the presence of inactive SiO 2 –CoFe 2 O 4 support. Among all the Ag(0)/SiO 2 –CoFe 2 O 4 NCs catalysts tested, the Ag loading of 0.98 wt% exhibited the highest catalytic activity toward hydrolysis of AB with a highly turnover frequency of TOF = 264 min −1 at room temperature, being higher than that of most reported Ag-based catalysts. Especially, these catalysts can be readily separated from the solution for recycle purpose, and can keep the high activity even after seven times of recycle. These results showed that Ag(0)/SiO 2 –CoFe 2 O 4 NCs prepared in this study are a promising catalyst for hydrogen production from aqueous AB and for developing a highly efficient hydrogen storage system for fuel cell applications .
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高影响因子
Nano Select
·
2021
·Vol. 2
·期 11
·2135-2147
·
IF 0
Puhong Wen,Xiaowen Jiang,Qian He,Dengwei Hu,Lijun Ren,Weixing Zhao
The tetragonal phase Nb 2 O 5 (T-Nb 2 O 5 ) nanobelts with preferentially exposed the (010) facet have been successfully prepared for the first time by insitu topological reaction using the KNb 3 O 8 nanobelts as the precursor. Meanwhile, the transformation mechanism of the crystal structure and morphology from the layered KNb 3 O 8 nanobelt to the T-Nb 2 O 5 nanobelt was revealed in detail by using XRD, FE-SEM, TEM, HRTEM, SAED, UV-vis DRS, EDX, XPS, and Raman spectra. In addition, Ag deposited T-Nb 2 O 5 (Ag/T-Nb 2 O 5 ) nanobelts were prepared by photo-reduction reaction. The photoelectrochemical properties of the T-Nb 2 O 5 nanobelts and Ag/T-Nb 2 O 5 nanobelts as a photocatalyst were evaluated by splitting water under simulated sunlight. The results show that the photocurrent density generated by the prepared Ag/T-Nb 2 O 5 sample is 48.1 µA∙cm −2 , which is 2.3 times that of the T-Nb 2 O 5 sample, and the prepared tetragonal phase T-Nb 2 O 5 nanobelts produce a photocurrent value 1.5 times that of the contrast orthogonal phase O-Nb 2 O 5 nanosheets. It indicates that the (010) facet of the tetragonal phase Nb 2 O 5 is one of the highest photocatalytic active surfaces, and the visible light utilization efficiency of the T-Nb 2 O 5 nanobelt with Ag deposited on the surface has been significantly improved, which implies that it has potential applications in the field of photocatalysis.
研究领域:
材料科学
·
纳米科技
·
光催化
·
能源化学
·
半导体材料
·
表面科学
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CRYSTENGCOMM
·
2013
·Vol. 15
·期 32
·6368-6373
·
IF 3.879
Shuling Xu,Lei Wang,Haibo Li,Qiaoli Yue,Rui Li,Jifeng Liu,Xiaohong Gu,Shuqiu Zhang
Novel three-dimensional Ag nanoflowers (3DAN) were successfully synthesized through a facile Cu2+ mediated solution method using N,N-dimethylformamide (DMF), which serves as both a reducing agent and a solvent at room temperature. It was found that the introduction of a trace amount of Cu2+ could greatly slow the rate of the Ag+ reaction and thus this process effectively reduced the growth speed of Ag nanoparticles allowing 3DAN to be formed. The mechanism underlying the self-assembly process and shape evolution of 3DAN were systematically investigated by varying reaction time. X-Ray powder diffraction (XRD), field-emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM) and high-resolution transmission electron microscopy (HRTEM) were used to characterize the structure and morphology of the obtained products. X-Ray photoelectron spectroscopy (XPS) was used to assess the chemical state and surface composition of the 3DAN. UV-vis absorption spectra of the products collected from the reaction solution at various stages were taken to study their optical properties. In the measurement of surface-enhanced Raman scattering using rhodamine 6G (R6G) as the probe, the 3DAN exhibited a significant enhancement factor, indicating their potential applications in biosensing and nanodevices.
研究领域:
纳米医学
·
生物传感
·
材料科学
·
胶体化学
·
分子影像学
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高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2015
·Vol. 41
·期 2
·944-950
·
IF 3.313
Ning-Zhao Shang,Cheng Feng,Shu-Tao Gao,Chun Wang
In this study, a bi-metal based nanocatalyst (AgPd@UIO-66-NH 2 ) was synthesized by immobilizing AgPd nanoparticles onto the amino-functionalized metal-organic framework material (UIO-66-NH 2 ). The catalytic activity of AgPd@UIO-66-NH 2 for the hydrolysis of ammonia borane was evaluated. Among all the prepared AgPd@UIO-66-NH 2 catalysts, the Ag 1 Pd 4 @UIO-66-NH 2 exhibited the highest catalytic activity for the hydrolysis of ammonia borane with a turnover frequency value of 90 mol H 2 mol catalyst −1 min −1 , which is among the higher value of the previous reports.
研究领域:
材料科学
·
催化化学
·
纳米技术
·
氢能
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高影响因子
OPTICAL MATERIALS
·
2014
·
IF 2.075
Junhong Zhao,Jian Lin,Wenjun Zhang,Hengyong Wei,Ying Chen
A highly stable substrate used for surface-enhanced Raman scattering (SERS) was fabricated by combining two-step electric field-assisted diffusion (EFAD) with subsequent annealing. The samples were characterized by UV/Vis spectroscopy, X-ray diffraction analysis (XRD), X-ray photoelectron spectra (XPS), atomic force microscopy (AFM) and transmission electron microscopy (TEM). The SERS activity of these substrates was evaluated by using Rhodamine 6G (R6G) as the probe molecule. The results showed that the Raman signals were significantly enhanced in our substrates. The reverse EFAD process was applied to induce larger silver NPs or aggregates formed in the glass, leading to a stronger SERS signal. The enhancement factor about 10 6 and the detection limit of 10 −9 M for R6G were achieved. This method is also very simple and cost-effective and provides a novel pathway for the development of future SERS sensor chips.
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高影响因子
JOURNAL OF THE TEXTILE INSTITUTE
·
2023
·
IF 1.7
Jie Wu,Shuqiang Liu,Gaihong Wu,Man Zhang,Yifan Jing,Jingjing Li,Md Moinul Hossain Patowary,Romen Chakma,Cailiu Wang,Fu Li,Lu Jia,Yujing Zhang,Dongdong Lu
This paper presented the composite antibacterial agent of nano-silver (Ag) and tea polyphenol (TP) by bioreduction method. Then polylactic acid (PLA) nanofiber membranes with different antibacterial content were prepared by electrostatic spinning method. The morphologies, structural characteristics and properties of electrostatic spun fiber membranes were investigated by scanning electron microscope (SEM), infrared spectroscopy (FTIR), electronic single fiber strength machine and flat colony counting method. The results showed that Ag@TP was loaded with silver nanoparticles with uniform particle size distribution. When the content of Ag@TP of electrospun fiber was less than 2.0%, the diameter of electrostatic spinning fiber was uniformly distributed and had smooth surface. It could be seen from the FTIR spectrum that Ag@TP and PLA were well compounded through valence bonds. As the content of antibacterial agent increased, the elongation at break of the fiber membrane first decreased and then increased. While the breaking strength was found to first decrease, then increase and decrease again. The water contact angle of the fiber membrane was gradually decreased with the increase of the antibacterial agent content. When the amount of Ag@TP was added 2.0%, the relative antibacterial rate of the electrospun fiber membrane to E.coli and S.aureus was as high as 95%, indicating an excellent antibacterial effect.
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高影响因子
Clinical Oral Investigations
·
2026
·Vol. 30
·期 9
·390
·
IF 3.6
Zhang Zhenzhen,Chen Yadong,Zhong Qi,Xu Jiajia,Cheng Yajie,Shu Chang,Luo Qiaojie
Objectives The hybrid layer formed during dentin bonding remains susceptible to degradation. This study aimed to develop a CaCl₂/AgF treatment strategy for in situ deposition of Ca–Ag hybrid nanoparticles within the demineralized dentin matrix (DDM) and to evaluate its effects on interface-confined water regulation, antibiofilm activity, mineral deposition, and ultimately bonding durability. Materials and methods DDM was sequentially treated with CaCl₂ and AgF solutions. Interface-confined water regulation was assessed by surface potential, water uptake, and thermogravimetric analysis (TGA). Antibiofilm activity against Streptococcus mutans ( S. mutans ) and saliva-derived microcosm biofilms was evaluated by confocal laser scanning microscopy (CLSM) and scanning electron microscopy (SEM). Mineral deposition was examined by transmission electron microscopy (TEM) and selected area electron diffraction (SAED). Adhesive infiltration, nanoleakage, and microtensile bond strength (1 day and 12 months) were tested. Results Ca–Ag deposition was associated with reduced interfacial hydration, as indicated by reduced surface potential, decreased water uptake, and lower mass loss below 200 °C in TGA. It inhibited biofilm formation and disrupted established biofilms. Enhanced mineral deposition occurred within 1 h in the Ca–Ag group, with SAED patterns showing crystalline mineral phases, whereas controls remained unmineralized. Enhanced adhesive infiltration, reduced nanoleakage, and improved 12-month bond strength were observed. Conclusions Sequential CaCl₂/AgF treatment induced the in situ deposition of Ca–Ag hybrid nanoparticles within the DDM, which was associated with reduced interfacial hydration, antibiofilm activity, mineral deposition, and improved bonding performance in vitro. Clinical Significance This in vitro study suggests that CaCl₂/AgF treatment may represent a potential strategy for improving resin–dentin interface stability. Further investigations are required to evaluate its clinical applicability.
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高影响因子
JOURNAL OF MATERIALS RESEARCH
·
2026
·
IF 2.9
Zuo Guangling,Ye Hongyong,Du Jia,Ding Xin
An S-scheme Ag/CdS/Fe 2 O 3 (Ag/CS/FO) heterojunction was fabricated via a sequential solvothermal and photodeposition method. The microstructure and optoelectronic properties of the synthesized ternary composite were verified by a series of characterization methods. The transfer of photogenerated electron–hole pairs (e − /h + pairs) follows an S-scheme pathway, driven synergistically by the interfacial electric field (IEF) and band bending. That directs electrons (e − ) to the conduction band (CB) of CdS (CS) and holes (h + ) to the valence band (VB) of Fe 2 O 3 (FO), achieving efficient e − /h + pairs separation while maintaining high redox capabilities. Additionally, the incorporated Ag nanoparticles enhance visible-light harvesting via the surface plasmon resonance (SPR) effect and function as electron-transfer bridges, collectively promoting charge migration. Consequently, the composite exhibits high photocatalytic activity, degrading 98.68% of amoxicillin (AMX) under visible light. It also maintains 91.6% efficiency after four cycles, confirming sound stability. Notably, the material demonstrates superior performance in real-life water matrices (tap and river water), highlighting its strong application potential. Graphical abstract
The alternative text for this image may have been generated using AI.
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高影响因子
ACS Applied Bio Materials
·
2026
·Vol. 9
·期 15
·6847-6867
·
IF 5.6
Khan Bangul,Khan Bilawal,Zhu Weibin,Zhou Changqiu,Yin Fong Ching,Ahmad Rafi u Shan,Gunasekran Iyappan,Hilal Mohamed Elhousseini,Khoo Bee Luan
Stretchable bioelectronic hydrogels must reconcile extreme mechanical compliance with stable, high-fidelity charge transport and therapeutic functionality. We introduce a Ag-anchored Ti 3 C 2 T x -polyacrylamide (PAM) hydrogel, in which silver nanoparticles bridge adjacent MXene layers, thereby lowering interlayer resistance and forming a continuous, strain-adaptive conductive network. Concurrent metal-polymer co-ordination with 2D MXene reinforcement yields a hierarchical dissipation architecture featuring ultra-stretchability (∼2036%), high toughness (∼2350 kJ m −3 ), and rapid self-recovery under cyclic loading. Electron-bridge-enabled transport results in stable electro-mechanical sensing (linear Δ R / R o up to 500% strain; R 2 ≈ 0.98) and minimized skin-electrode impedance at 1.5 mm thickness across 1 Hz−10 kHz, outperforming commercial Ag/AgCl electrodes. In human tests, the hydrogel electrodes capture high-fidelity sEMG (SNR ≈ 30 dB) and ECG (SNR ≈ 26.157 dB) with 5-day stability. At the same time, photothermal actuation at 808 nm and 1 W cm −2 rapidly reaches ∼74 ° C and cycles reproducibly, enabling dose-tunable therapeutic heating. The platform also demonstrates >90% fibroblast viability and significant suppression of S. aureus growth. By coupling interlayer electron bridges with dynamic bonding, this work establishes a unified design principle for multifunctional, clinically oriented soft hydrogels that span wearable physiological monitoring and NIR-assisted therapy.
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PubMed
高影响因子
ACS Applied Nano Materials
·
2026
·
IF 5.8
Zheng Qin,Liang Zhiman,Dou Yanting,Jin Wenxin,Sheng Likun,Gao Yu,Wang Xinyi,Huang Yaolei,Ding Fu,Sun Yaguang,Xu Zhenhe
Using plasmonic metal nanoparticles (NPs) represents
an effective
strategy to overcome insufficient visible-light absorption and severe
photogenerated charge recombination in organic photocatalysts via
local surface plasmon resonance (LSPR)-triggered hot-carrier injection
and regulated interfacial charge transport. Herein, plasmonic Ag nanoparticles
(Ag NPs)-decorated 4,5-dibromofluorescein (DBF) nanosheets were readily
prepared through a convenient in situ photodeposition strategy to
construct Ag/DBF nanosheets for photoinduced hydrogen generation under
visible-light. Benefiting from the intrinsic light-harvesting capability
of DBF, together with the combined effects of plasmonic Ag NPs and
interfacial Schottky junction formation, the Ag/DBF nanosheets exhibit
significantly enhanced charge separation and interfacial electron-transfer
efficiency. Under visible-light irradiation, plasmon-induced hot electrons
produced by Ag NPs migrate into the conduction band of DBF, while
the Ag NPs simultaneously function as electron sinks to inhibit charge
carrier recombination and accelerate surface proton reduction. The
optimized 6.0 wt % Ag/DBF nanosheets exhibit a hydrogen evolution
rate of 1265.2 μmol g –1 h –1 , 111-fold higher than that of pristine DBF. It retains robust structural
and photocatalytic stability in multiple cycling runs. This work reveals
the synergistic coupling mechanism between plasmonic hot-electron
transfer and organic semiconductor photocatalysis, offering an effective
strategy to construct high-performance plasmonic organic photoactive
materials for solar-to-hydrogen conversion.
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高影响因子
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