APPLIED CATALYSIS B-ENVIRONMENTAL
·
2022
·
IF 24.319
Mingyang Liu,Xuxiao Liu,Diqin Fu,Zhenrong Xie,Xiaolin Zou,Wuran Liu,Yueyang Yu,Jihui Wang,Hanqing Wang,Chaobo Tong,Zhiming Cheng,Songmei Wu,Kejian Ding,Yu Yu
Establishment of heteroatoms-participantly coordinating single atom (SA) configuration is placed high expectation for exceptional catalytic property. Meanwhile, simple technologies to construct SA site with low cost had also been pursued in long-term. Herein, we introduced a facile complexing agent-assistant photodeposition strategy for SA Ag-N 3 S 1 asymmetric site catalyst. The modification on substrate by heteroatom doping and the coexisting amine ligands’ complexation with silver cation are concurrently responsible for the construction of SA site. Attributed to modulation in electronic structure states, this Ag-N 3 S 1 site-decorated carbon nitride exhibited extremely strengthened photocatalytic hydrogen production ability. This exploration provides a promising universal strategy for the establishment in SA catalysts of high-efficiency in broader field.
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Nanomaterials
·
2025
·Vol. 15
·期 18
·1383
·
IF 4.3
Hongfei Dou,Jie Wang,Yan Zhao,Junjie Liu,Yannan Li
Aiming at the insufficient broad-spectrum absorption and high carrier complexation rate in the photocatalytic antimicrobial application of TiO2, Ag/TiO2composite materials were prepared by co-precipitation method in this study. The material characterization showed that Ag was uniformly dispersed on the TiO2surface in the form of nanoparticles, and the specific surface area of Ag/TiO2composite materials was enhanced by 59.6% compared with that of pure TiO2, and the mesoporous structure was significantly optimized. Visible photocatalytic tests showed that the degradation rate of Ag/TiO2composite materials for Rh B and M O was more than two times higher than that of pure TiO2. Under dark conditions, the material showed a minimum inhibitory concentration (MIC) of 62.5 μg/mL against Escherichia coli and Staphylococcus aureus, with an antimicrobial rate of 99.8% for 8 h, confirming its non-light-dependent antimicrobial activity. Mechanistic studies revealed that photogenerated electrons were efficiently captured by Ag nanoparticles, which inhibited e-h+complexation; meanwhile, the photothermal effect (ΔT > 15 °C) promoted the sustained release of Ag+, which realized the triple synergistic antimicrobial activity by disrupting the bacterial membrane and interfering with metabolism. This study provides a new strategy for the development of efficient solar-powered water treatment materials.
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PubMed
高影响因子
Advanced Sustainable Systems
·
2025
·
IF 6.1
Dongdong Li,Jiajie Cui,Congcong An,Qingyi Liu,Jun Xu,Xuan Han,Shengchen Yang,Wen-Yong Lai
Conductive polymer poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT: PSS) has garnered extensive research interest as the electrode material for supercapacitors due to its excellent conductivity and high specific capacitance. However, the dense stacking of PEDOT:PSS leads to a low utilization for high areal capacitance, due to the limited amounts of active sites exposure to electrolytes. In this study, Ag particles are first incorporated into PEDOT:PSS ink to produce PEDOT:PSS/Ag composite electrode materials, which are then used to construct paper-based flexible supercapacitors via a scalable screen-printing technique. Benefiting from the improved electrical property and surface morphology, the areal capacitance of the supercapacitor based on PEDOT:PSS/Ag composite electrodes is found to be 3.87 times greater than that of the pure PEDOT:PSS electrode. Moreover, the paper-based supercapacitor also exhibits exceptional flexibility, maintaining over 80% of its initial capacitance even after 9000 bending cycles. These findings indicate that PEDOT:PSS/Ag composite electrodes are promising candidates for high-performance flexible supercapacitors, highlighting their potential to supply continuous power for application in future flexible electronics.
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JOURNAL OF MEMBRANE SCIENCE
·
2025
·
IF 9
Boyang Xu,Xuefei Zhou,Yifan Zhang,Yalei Zhang,Qipeng Zhao,Tai-Shung Chung
Photocatalytic membranes have emerged as promising catalytic oxidation materials to mitigate fouling with self-cleaning capacity, yet their visible-light activity and charge recombination remain challenging. In this work, hydrophilic Ag/Ag 3 PO 4 -PDA-n@PES ultrafiltration (UF) membranes were fabricated via polydopamine-assisted surface modification of polyethersulfone (PES) substrates followed by in-situ mineralization of Ag/Ag 3 PO 4 nanoparticles. The membranes were systematically characterized, and the optimized Ag/Ag 3 PO 4 -PDA-5@PES exhibited a water flux of 125 L m −2 h −1 (LMH) and 89.0 % bovine serum albumin (BSA) rejection, outperforming the pristine PES (98 LMH, 66 %). Under visible light, the membrane achieved 87–89 % degradation of organic dyes with a kinetic constant of 0.0254 min −1 for Rhodamine B (RhB), retaining >80 % efficiency after five cycles. In cyclic filtration with RhB, only a 13 % flux decline occurred after three backwashing/self-cleaning cycles, with a flux recovery of 98 %, confirming its strong antifouling and self-cleaning capacity. Moreover, a continuous operation with synthetic urine wastewater achieved 80–95 % chemical oxygen demand (COD) and 90–95 % chroma removal, demonstrating the membrane's practical potential in wastewater treatment.
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Science China-Materials
·
2025
·Vol. 68
·期 8
·2725-2734
·
IF 7.4
Wang Machao,Tang Yangmin,Pu Guiqiang,Kang Chengbin,Wang Zhiqiang,Liu Lijia,Li Jing,Zhou Zhenzhen,Chen Wei,Wang Dong,Wang Jiacheng
Self-trapped excitons are prevalent in metal halide perovskites (MHPs) characterized by soft lattices and strong exciton-phonon coupling, emitting photons with broadband emission and large Stokes shifts, rendering them particularly well-suited for applications in light-emitting diodes. But their photoluminescence quantum yields (PLQY) are limited by both high exciton binding energy and halogen-vacancy-associated non-radiative recombination. Here, we show that PLQY could be enhanced by a factor of 5.6 from 16% to 89% through doping trace Ag into Cs 2 NaBiCl 6 double perovskites, superior to those of previous Cs 2 NaBiCl 6 -based emitters. Experimental and theoretical studies reveal that trace Ag-initiated covalent interactions could reduce the exciton binding energy by 0.12 eV due to local symmetry breaking, thus improving the photoexcitation process. Also, this covalent interaction could passivate Cl vacancy defects, suppressing non-radiative recombination. Therefore, Cs 2 NaBiCl 6 : 0.7% Ag + could accumulate active self-trapped excitons to obtain high PLQY. Assembly of near-infrared light-emitting diodes using Cs 2 NaBiCl 6 : 0.7% Ag + illustrates their valuable applications in nondestructive spectral analysis and night vision illumination. This work shows an effective strategy of improving photoemission of MHPs with high PLQY for advanced optoelectronic applications.
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高影响因子
FUEL
·
2025
·
IF 7.5
Yan Zhang,Yaqi Wang,Zhengyu Chen,Quan Shi,Linzhou Zhang
Pyrolysis has emerged as a key approach for converting plastic waste into valuable resources. However, this process is an extremely complex reaction system, and the molecular conversion behavior and pathways have not been fully understood. This study systematically investigated the thermal pyrolysis of polypropylene (PP) over a temperature range of 420–500 °C, and the composition of PP pyrolysis oils was analyzed using Ag + complexation electrospray ionization high-resolution Orbitrap mass spectrometry. The results indicate that the pyrolysis oils are primarily composed of mono-olefins and diolefins at lower temperature and pressure, with a three-carbon repeating unit. Secondary reactions intensified at elevated temperatures and pressure, progressively converting heavy olefins to polycyclic aromatics. The results of mass spectrometry analysis were compared with gas chromatography showing significant advantages, and were in good agreement with the molecular structure information provided by nuclear magnetic resonance hydrogen spectroscopy and Fourier transform infrared spectroscopy. Furthermore, the PP pyrolysis pathways at varying temperatures were proposed showing the full pathway of cracking and aromatization.
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CRYSTAL GROWTH & DESIGN
·
2025
·
IF 3.4
Bo Shen,Zhengqiu Chen,Junyu Chen,Ning Wang,Huaming Mao,Jungang Yin,Yu Ren,Wei Dai,Shuanglong Zhao,Hongwei Yang
The high dependence of the photovoltaic industry on the precious metal Ag has exacerbated its resource shortage and cost pressure, and there is an urgent need to develop low-cost, Cu-based alternative materials. In this study, the construction of a Cu@Ag core–shell structure is realized through the interface regulation strategy driven by glutamic acid (Glu) coordination, which effectively synergizes the high electrical conductivity of Cu and the antioxidant advantages of Ag. Combined with molecular dynamics simulation and electrochemical analysis, the three-stage process of adsorption–displacement–reduction of Ag layer growth is revealed. On the basis of this, according to the differences in the surface interface properties of different dimensional Cu-based materials, the “high-activity edge-selective passivation” (2D) and “dual-complexant gradient adjustment” (3D) strategies are adopted to optimize the coating path of the silver layer, so as to realize the multidimensional Cu@Ag core–shell structures. Finally, material performance characterization shows that the multidimensional Cu@Ag core–shell structure can significantly inhibit the oxidation of Cu nuclei. This study provides a new solution for the design of low-cost and high-performance materials in the fields of photovoltaic conductive pastes and flexible electronics as well as a new idea for interfacial engineering and large-scale preparation of multidimensional heterostructures.
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ACS Applied Nano Materials
·
2025
·
IF 5.5
Hanwen Xin,Xinru Wang,Xing Wang,Xinke Li,Xujie Yang,Jinghui Zhou,Dayin Sun
Current antimicrobial agents face challenges in recyclability and solvent compatibility. To overcome these limitations, we engineered core–shell Fe3O4@SiO2@Lignin@Ag nanoparticles (FLA) and assembled them into magnetically responsive colloidosomes via emulsion templating. Structural analyses confirmed a controlled size evolution from the magnetic core to the composite colloidosomes. The colloidosomes achieved complete elimination of pathogenic bacteria (Escherichia coli and Staphylococcus aureus) within 24 h─exhibiting 5-fold higher efficiency than nonassembled nanoparticles─while maintaining structural integrity across polar and nonpolar solvents. Crucially, the system demonstrated high biocompatibility (>80% cell viability in mammalian cells), establishing a green platform for recyclable antimicrobial coatings in diverse industrial applications.
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SENSORS AND ACTUATORS B-CHEMICAL
·
2025
·
IF 7.7
Yuyu Peng,Xinyin Zhang,Chunyan Wang,Xin Peng,Jia Huo,Kelei Pang,Xiwang Li,Xiaofeng Zhou
Rapid and sensitive detection of cortisol, which is essential for diagnosing adrenal and stress-related disorders, has been achieved through the development of a surface-enhanced Raman scattering (SERS) sensor. This sensor integrates molecularly imprinted polymers (MIPs) with silver core-gold shell nanoparticles (Ag@AuNPs) to provide a selective and sensitive means of cortisol detection. By leveraging the surface plasmon resonance (SPR) effect, the sensor is able to amplify SERS signals, while the MIPs offer specific recognition sites for cortisol. Fabricated using a straightforward two-step process that involves chronoamperometry and self-polymerization, the Ag@AuNPs functionalized with MIP (Ag@Au/MIP) sensor is both easy to prepare and highly reproducible. The Ag@AuNPs increases the effective surface area, optimizing the electromagnetic field and significantly boosting the sensor's sensitivity. The sensor demonstrates a strong affinity for cortisol, exhibiting a linear detection range from 100 pM to 0.1 mM and a detection limit as low as 10 pM. Furthermore, it shows excellent specificity against potential interferences and maintains its stability and anti-interference ability in artificial saliva. By providing a rapid, cost-effective, and user-friendly platform for cortisol detection, this Ag@Au/MIP-based SERS sensor holds great promise for clinical diagnosis, health monitoring, and point-of-care testing applications.
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Frontiers in Chemistry
·
2022
·
IF 5.545
Obeng Enoch,Feng Jiayao,Wang Danyan,Zheng Dongyang,Xiang Bailin,Shen Jianliang
To overcome the limitations of traditional therapeutics, nanotechnology offers a synergistic therapeutic approach for the treatment of bacterial infection and biofilms that has attracted attention. Herein, we report on a ZnO@Ag nanocomposite with good biocompatibility synthesized by doping ZnO NPs with silver nanoparticles (Ag NPs). ZnO@Ag nanocomposites were synthesized with varying ratios of Ag NPs (0.5%, 2%, 8%). Under the same experimental conditions, ZnO@8%Ag exhibited outstanding properties compared to the other nanocomposites and the pristine ZnO NPs. ZnO@8%Ag demonstrated excellent photothermal and photodynamic properties. Also, ZnO@8%Ag demonstrated over 99% inhibition of Staphylococcus aureus (S. aureus) under photothermal therapy (PTT) or photodynamics therapy (PDT) as a result of the excessive generation of reactive oxygen species (ROS) by the Ag+ released, while the pristine ZnO showed an insignificant inhibition rate compared to the PBS group (control). Furthermore, ZnO@8%Ag completely disrupted S. aureus biofilm under a combined PTT/PDT treatment, a synergetic trimodal therapy, although the molecular mechanism of biofilm inhibition remains unclear. Hence, the excellent photothermal, photodynamic, biocompatibility, and bactericidal properties of ZnO@8%Ag present it as an appropriate platform for bacterial and biofilm treatment or other biomedically related applications.
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Nanotechnology Reviews
·
2020
·Vol. 9
·期 1
·568-579
·
IF 3.639
Cheng Hu,Lina Wu,Changchun Zhou,Huan Sun,Peng Gao,Xiujuan Xu,Chenxi Zhang,Jie Liang,Yujiang Fan,Jianxun Sun,Xuedong Zhou,Xingdong Zhang
In the past decade, biomimetic calcium phosphate (CaP) ceramics have been considered as practicable grafts and biomaterial substitutes in repairing jaw bone defect after tumor resection or traffic accident. Nowadays, increasing incidence of biomedical material-associated infection has raised a concern when applying these materials. In this work, a new porous CaP scaffold with antibacterial coating was proposed. This biomimetic scaffold was composited with berberine (BBR), Ag nanoparticles (nAg), and silk fibroin (SF). The microstructures and phase composition of the scaffolds were analyzed. The cytocompatibility and osteogenic potential of the prepared samples were evaluated in vitro . The scaffolds held hierarchical structure: the first-level porous CaP ceramic with micron pores ranged from 250 to 600 µm; the second-level spongy-like structure with abundant capillary pores ranged from 500 nm to 10 µm; and the third-level structure was achieved by filling BBR, nAg, and SF gel coatings into the above porous structures. The experimental results showed that the antimicrobial capability of single BBR coating is inconspicuous. However, the introduction of nAg could significantly promote the antibacterial effect of scaffolds. At the same time, such scaffolds showed improved osteoinductivity. This new biomimetic CaP scaffold with antibacterial and osteoinductive properties may be a promising candidate for bone tissue engineering.
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Frontiers in Chemistry
·
2023
·
IF 5.5
Chen Huiying,Zhao Xinshuo,Cui Bingbing,Cui Haohao,Zhao Mengyang,Shi Jun,Li Jingguo,Zhou Zhan
Pathogenic microbial infections have been threatening public health all over the world, which makes it highly desirable to develop an antibiotics-free material for bacterial infection. In this paper, molybdenum disulfide (MoS2) nanosheets loaded with silver nanoparticles (Ag NPs) were constructed to inactive bacteria rapidly and efficiently in a short period under a near infrared (NIR) laser (660 nm) in the presence of H2O2. The designed material presented favorable features of peroxidase-like ability and photodynamic property, which endowed it with fascinating antimicrobial capacity. Compared with free MoS2 nanosheets, the MoS2/Ag nanosheets (denoted as MoS2/Ag NSs) exhibited better antibacterial performance against Staphylococcus aureus by the generated reactive oxygen species (ROS) from both peroxidase-like catalysis and photodynamic, and the antibacterial efficiency of MoS2/Ag NSs could be further improved by increasing the amount of Ag. Results from cell culture tests proved that MoS2/Ag3 nanosheets had a negligible impact on cell growth. This work provided new insight into a promising method for eliminating bacteria without using antibiotics, and could serve as a candidate strategy for efficient disinfection to treat other bacterial infections.
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