Advanced Materials Interfaces
·
2025
·
IF 4.4
Hanwei Wang,Haijie Chen,Jian Zhang,Zhiwen Zheng,Xiaolong Liu,Haizhong Wang,Dapeng Feng,Dan Qiao
The low interlayer forces of 2D nanosheets as nano additives are conducive to enhancing the tribological performance of lubricating oil. In this work, ultrathin 2D Co-BDC MOFs nanosheets are successfully synthesized with ultrasonic assistance, and Ag nanoparticles are successfully loaded onto their surfaces via chemical adsorption. The Ag@Co-BDC nanocomposites are demonstrated to significantly improve the tribological performance of PAO10 base oil, leading to a 16.7% reduction in the friction coefficient and a 61.5% decrease in the wear rate. Moreover, macroscopic reaction further confirmed that the introduction of Ag@Co-BDC nano additives facilitated the tribochemical reaction during friction. This work successfully synthesized a novel lubricating additive with excellent tribology performance and provided a preliminary explanation of the mechanism of the tribochemical reaction.
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2024
·
IF 8
Changkun Song,Hongbiao Huo,Wei Shi,Jianyong Xu,Xiaoting Lei,Bonan Gu,Zhongbo Han,Wenchao Zhang
Surface-enhanced Raman spectroscopy (SERS) is strongly dependent on the metallic plasmonic nanostructures that can generate plasmon resonance coupling effects. Plasmonic nanostructures with sub-nanometer interparticle gaps or cavities have shown great potential in generating high local electromagnetic fields. Unfortunately, achieving precise control over the geometrical morphology of these nanostructures at the sub-nanometer scale presents significant challenges, particularly in applications where high consistency and homogeneity are required. Here, a reliable approach is proposed to construct plasmon-coupled Ag nanosphere-internalized nanocavity (SIC) arrays to enhance sensitivity and reproducibility in SERS sensing. This novel SIC nanostructure consists of a precise arrangement of Ag nanospheres located at the bottom of Au nanocavities, separated by a precisely controlled nano-Al 2 O 3 dielectric layer. The Al 2 O 3 dielectric layer plays a crucial role in inhibiting quantum tunneling effects at the nanogaps, thereby suppressing charge recombination and leading to strong plasmon resonance coupling. The SERS enhancement tends to significantly diminishes as the nanogap size increases from 4 to 10 nm, a spatially averaged SERS enhancement factor of 3.5 * 10 8 was obtained when the gap size is 4 nm, aligning well with the FDTD simulation results. As a representative application, an indirect detection strategy is utilized to selectively detect TNT with a high level of homogeneity and reproducibility, achieving a relative standard deviation of less than 7.8 %. Together with the capability to be fabricated on a flexible polyimide substrate, the SIC substrate shows significant potential for practical applications.
✓ 已验证
产品关联
DOI
高影响因子
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.
✓ 已验证
DOI
高影响因子
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.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
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.
✓ 已验证
产品关联
DOI
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.
✓ 已验证
产品关联
DOI
高影响因子
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.
✓ 已验证
产品关联
DOI
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.
✓ 已验证
产品关联
DOI
高影响因子
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.
✓ 已验证
产品关联
DOI
高影响因子
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.
✓ 已验证
产品关联
DOI
高影响因子
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.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Jian Yu,Hongpan Zhu,Zizhen Zhou,Xiaofang Liu,Guang Han,Bin Zhang,Xu Lu,Guoyu Wang,Xiaoyuan Zhou
Mg-based compounds are emerging materials for efficient thermoelectric conversion, as exemplified by n-type Mg 3 Sb 2 -based materials, while a high performing p-type Mg 3 Sb 2 material is lacking. EuMg 2 Sb 2 , a derivative of Mg 3 Sb 2 , has revealed potential as a high-performance alternative to p-type Mg 3 Sb 2 -based materials, while pristine EuMg 2 Sb 2 suffers from low carrier concentration. Herein, we reveal that both Zn substitution for Mg and Yb substitution for Eu not only boost the carrier concentration and mobility of p-type EuMg 2 Sb 2 -based materials, but also sharply diminish the lattice thermal conductivity via enhancing phonon scattering. Band structure calculation shows that Zn substitution minimizes the energy difference between different bands at the valence band maximum and reduces the band effective mass, leading to optimized band structure. Combined with the role of Ag doping in increasing the carrier concentration and power factor, p-type Eu 0.5 Yb 0.5 Mg 1.0975 Zn 0.9975 Ag 0.005 Sb 2 sample obtains a maximal dimensionless figure of merit ( zT ) value of 1.18 at 823 K, which compares favorably to those of EuMg 2 Sb 2 and other p-type Mg–Sb-based Zintl materials. This study demonstrates the efficacy and importance of delicate composition engineering in boosting the thermoelectric performance of p-type EuMg 2 Sb 2 .
研究领域:
材料科学
·
热电学
·
固体物理
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）