ChemCatChem
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2025
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IF 3.9
Zhi Cao,Haitao Cao,Chao Liu,Zhongxiang Fan,Yixiang Shi,Yin Wang,Tao Shen,Lei Li,Gang Qi
Here, a series of schiff-base porous organic polymer-supported silver-nanoparticle, Ag0 NPs@PPTA-x were prepared with a two-step ion coordination/hydrogen reduction. The resulting composite Ag0 NPs@PPTA-9.08 shows excellent catalytic performance for HMF oxidation to HMFCA, and an impressive HMFCA yield of 99.3% was achieved under optimal condition (NaOH 1.5 eq, 50 mL/min air flow, 20 °C, 6 h). Analysis techniques such as ICP-OES, XRD, TEM, SEM, N2 adsorption-desorption, and XPS were employed to characterize the structure and properties of Ag0 NPs@PPTA-x. The results indicate that the coordination of the nitrogen atom is the key factor for the higher activity and stability of Ag0 NPs@PPTA-9.08. The results of leaching and reusing tests as well as structural characterization (XRD, SEM, and FT-IR) shows that the Ag0 NPs@PPTA-9.08 has good stability and robustness structure. Furthermore, a gram-scale oxidation of HMF indicates this catalytic system can be readily scaled up to an industrial level. Finally, the results of other aldehydes oxidation over Ag0 NPs@PPTA-9.08 indicate the good substrate adaptability of the Ag0 NPs@PPTA-9.08. This work provides a new method for stabilizing nano-silver catalysts and opens up a simple avenue to selective oxidation of aldehydes that easily to scaled up.
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Journal of Coatings Technology and Research
·
2025
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IF 2.8
Li Senchi,Zhang Na,Peng Lai,Zhang Yang
The degradation and erosion of wood and its products caused by microorganisms remains a persistent challenge, which leads to significant economic and property losses and poses a potential health threat to users due to the presence of pathogenic microorganisms. In light of the recent COVID-19 pandemic, this issue has become increasingly urgent to address in modern society due to the increasing focus on private health. In this work, the carboxymethyl chitosan nano-silver (CMCS-Ag) was prepared through a microwave-assisted method, where the CMCS-Ag was ultrasonically blended with waterborne paint to obtain a waterborne antimicrobial wood coatings. Compared with commercial nano-silver with the same particle size, due to the unique system, the CMCS-Ag exhibited superior antibacterial efficacy and lower Ag + release. CMCS-Ag exhibited effective dispersion within waterborne coatings, leading to a significant improvement in both the mechanical and antimicrobial performance of the coatings. With a CMCS-Ag content of 10 wt%, the coating films exhibit high elastic modulus, tensile strength and shore hardness, 78%, 33% and 69% higher than the control, respectively. Moreover, antimicrobial tests confirm that CMCS-Ag wood coatings inhibit Escherichia coli (24 h sterilization rate: 99.99%), Aspergillus niger (28 days without erosion), and soil decay fungi (56 days undecayed), while minimizing wood product appearance deterioration and mass loss from microbial erosion. These findings not only provide valuable insights into enhancing the antimicrobial of wood and its products but also reduce possibilities for people exposed to pathogens.
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Advanced Healthcare Materials
·
2025
·
IF 9.6
Meili Yang,Zuzhe Kang,Xinpei Zhong,Sirui Bai,Dong-En Wang,Qin Tu,Sheng Chen,Jinyi Wang,Mao-Sen Yuan
Drug-induced acute kidney injury (DIAKI) is strongly associated with the accumulation of peroxynitrite (ONOO − ) and the depletion of glutathione (GSH), both of which contribute to increased morbidity and mortality. Owing to the lack of an effective method for the real-time monitoring of nephrotoxicity, it remains a diagnostic and therapeutic challenge and is considered a significant issue in clinical practice. Herein, a dual-site fluorescent chemosensor, BPS is developed , which enables the simultaneous real-time monitoring of ONOO − and GSH through distinct channels (ONOO − : λ ex = 410 nm, λ em = 548 nm; GSH: λ ex = 490 nm, λ em = 660 nm) without spectral crosstalk. The sensor displays remarkable sensitivity toward ONOO − and GSH, with low detection limits (181 n m and 2.42 µ m , respectively), exceptional specificity, and anti-interference effects. BPS is used to monitor ONOO − /GSH in real time to track the lesion of cisplatin-stimulated DIAKI and the following remedy process in mice and HK-2 cells for the first time. BPS provides a feasible tool for investigating oxidative stress-related DIAKI disease processes and further exploring some physiological mechanisms. Moreover, this study also offers a strategy for visualizing, modulating, and controlling the intracellular GSH/ONOO − redox.
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MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
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2025
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IF 7
Wei Feng,Jian Zhang,Ruxia Liu,Yong Xiao,Guoqiang Luo,Qiang Shen
Particle-reinforced composite fillers allow precise control of joint microstructure to enhance mechanical performance. However, traditional designs often reduce joint deformability and face issues like particle agglomeration and poor interfacial wettability. To overcome these limitations, a micro-network of Cu-Ti reinforcements within the brazing seam via Ag- x TiH 2 composite filler was developed in this work, which enabled the fabrication of high-strength Si 3 N 4 /Cu joints. Optimal results were achieved with the Ag-4TiH 2 filler, wherein a eutectic liquid formed at the Ag-4TiH 2 /Cu interface during the initial brazing stage. Simultaneously, undissolved Ti reacts with Cu to yield submicron Cu 4 Ti 3 -dominated reinforcements. On the Si 3 N 4 surface, hypostoichiometric TiN/TiN 0 . 61 /TiN 0 . 5 nanocrystals grow sequentially, which is beneficial for enhancing interfacial wettability and bonding reliability. A maximum average shear strength of 186.9 MPa was obtained, a 57.6 % improvement over the conventional AgCuTi filler. The fracture mechanism underwent a notable transformation: brittle failure at mixed regions of Si 3 N 4 and the reaction layer in AgCuTi joints was replaced by ductile failure at the interface between the Cu matrix and the brazing seam in Ag-4TiH 2 joints. The Cu 4 Ti 3 -dominated micro-network offers distinct advantages by enabling controllable in-situ growth that prevents agglomeration while maintaining joint deformability through the synergy effect of the abundant retention of ductile Ag(s, s) and decent elastic modulus and yield strength increment, and regulates the interface reaction to yield a thinner Ti-N layer instead of a TiN/Ti 5 Si 3 dual-layer. These features collectively contribute to the notable mitigation of residual stress within Si 3 N 4 /Cu joints.
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CRYSTAL GROWTH & DESIGN
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2025
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IF 3.4
Jingdan Lei,Chunhui Wang,Xiaoyun Yang,Huijuan Geng,Xu-Jin Ge,Xinxin Wang,Shengqiang Cui,Yajing Wang,Gui Yang,Chao Wang
Recently, AgCuTe has garnered growing interest as a promising superionic conductor. Herein, we investigated the thermoelectric property changes induced by introducing SnTe into AgCuTe. The introduction of SnTe enabled a nearly 20% enhancement in the Seebeck coefficient. Combining with the relatively high electrical conductivity, a power factor of 9.3 μW cm–1 K–2 was achieved at 723 K. Particularly, by introducing SnTe into AgCuTe, multiple-scale defects including atomic-scale lattice disorder, nanoprecipitates, and micrometer-scale grain boundaries were constructed as an effective hierarchical phonon scattering mechanism. Owing to the scattering of full-wavelength phonons, we yielded a low lattice thermal conductivity of 0.2 W m–1 K–1, which approached the amorphous limits. Consequently, a maximum zT up to 1.1 was obtained at 723 K for AgCuTe–3 wt % SnTe, which was nearly 40% higher than that of pristine AgCuTe.
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LANGMUIR
·
2025
·
IF 3.9
Yanrui Wang,Ting Yu,Qing Xue,Le Chen,Yue Chen,Zhonghua Sun,Junfeng Qian,Chang Guo,Vladimir Yu. Guskov,Zhi-Hui Zhang
In this study, a Zn-based MOF was synthesized via a solvothermal method, and a series of AG/Zn-MOF-X composite aerogels were subsequently engineered through the controlled incorporation of agar. Comprehensive evaluation revealed that the AG/Zn-MOF-0.8 composite achieved remarkable removal efficiencies of 65, 61, and 100% for Cr2O72–, CrO42–, and MnO4–, respectively, outperforming pristine Zn-MOF by 14, 3, and 1%. An analysis of the kinetics and isotherms provided insights into the adsorption mechanisms. Notably, under photocatalytic conditions, the composite exhibited superior degradation with removal rates of 79, 86, and 100% for the respective oxyanions. These findings highlight that tailored MOF modifications can significantly boost both adsorption and photocatalytic performance, offering new possibilities for advanced water purification technologies.
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Nature Communications
·
2025
·
IF 15.7
Wei Zhong,Haojie Zhao,Bowen Yao,Zhenze Li,Shuai Zhou,Zhifeng Wang,Yuhao Geng,Wen Sun,Jiajun Fu
Bionic electronics are designed to bridge the gap between biological systems and conventional electronic devices. However, replicating the high dynamic adaptivity and functional plasticity of living tissues while preserving the electrical performance and structural integrity of traditional electronics remains highly challenging, owing to the intrinsic trade-offs in molecular design. To address this issue, a methodology of reversible nanophase regulation is proposed, inspired by ion-specific effects in biological environments. Benefiting from the dynamic response of noncovalent interaction to specific ions, the developed system can successfully integrate multiple traditionally contradictory properties–combining outstanding electrical/mechanical performance with excellent reconfigurability, such as re-writability of conductive pathways, in-situ wet solderability with good spatial resolution, and closed-loop recyclability. This methodology offers a promising framework for designing reconfigurable devices for bioelectronics applications such as human-machine integration and tissue engineering. Man-made electronics often face trade-offs among biological-like plasticity, electrical performance, and structural integrity. The authors show that ion-specific effects in biology can be leveraged to create reconfigurable materials for bionic electronics.
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CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Pengxiang Si,Mingrui Liang,Jihua Zou,Yu Kuang,Juntao Zhang,Qingsha S. Cheng,Yiqian Kong,Yuxin Cai,Guozhi Huang,Yun Wu,Zhu Long,Boxin Zhao,Dan Zhang
Bio-integrated electronic devices are skin-mounted accurate tools for acquiring biological signals. The knee joint is one of the most important joints for human movement, playing a crucial role in functions such as walking, standing, sitting and containing important physiological health information about orthopedic disease diagnosis, prevention, and rehabilitation. However, it is still challenging to precisely and directly monitor joint rotation via skin-mounted bio-integrated electronic devices because joints are hidden inside the skin. In this study, we design a reusable, sustainable, battery-free, wireless, and flexible antenna sticker to adhere to the skin that can directly measure knee joint rotation degree. The antenna sticker is adhered to the lower leg and powered by electromagnetic radiation from a radio frequency identification (RFID) reader. When rotating the knee, the distance between the antenna sticker and the reader changes, leading to an alteration in the received signal strength indicator (RSSI). Meanwhile, the 3D optical motion capture system collects joint rotation data as a “gold standard”. After matching two series of real-time data using the Gaussian method, one RSSI can represent one specific joint rotation degree. The antenna sticker is stable at a variety of humidity and temperatures. The antenna sticker shows great potential to sense joint rotation and human motions. The scientific insights and engineering principles revealed in this antenna sticker will be applicable to a broad range of applications including skin-mounted epidermal electronics and wearable devices.
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ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
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2020
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IF 4.872
Bowen Xiao,Xiaolei Wang,Jing Yang,Kunkun Wang,Yinqing Zhang,Binbin Sun,Tong Zhang,Lingyan Zhu
The wide application of silver nanoparticles (AgNPs) has inevitably led to their release into the natural aquatic environment. Natural organic matter (NOM) is ubiquitous and would influence the fate and effects of these nanoparticles in such aquatic environments. Here we demonstrate that NOM plays an important role in the bioaccumulation kinetics and tissue distribution of AgNPs in zebrafish. In the presence of humic acid and fulvic acid , the uptake rates of AgNPs decreased while the depuration rates of AgNPs increased. As a result, the bioconcentration factor (BCF) of AgNPs in the entire body of the zebrafish was reduced. AgNPs were mainly taken up by the zebrafish via oral ingestion and were greatly accumulated in the liver, intestine and gill. In the intestine, NOM effectively inhibited the AgNPs from penetrating the cell membranes into internal tissues and also suppressed the disintegration and dissolution of AgNPs in gastrointestinal fluid, thereby decreasing the absorption of Ag by zebrafish. This research underlines the significance of incorporating the effects of NOM into predictive models for accurately assessing the toxicity and ecological risks of nanoparticles in natural aquatic environments.
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ACS Applied Nano Materials
·
2025
·
IF 5.5
Ping Cao,Yaohao Zhang,Yi Gao,Limei Zhang,Zhengyang Ji,Xinyue Cong
Organic–inorganic hybrid perovskite solar cells (PSCs) have attracted significant attention in recent years due to their exceptionally high theoretical photoelectric conversion efficiency. Although substantial breakthroughs have been made in controlling the bandgap by adjusting the ratio of organic–inorganic compounds, research on the electron transport layer (ETL) and hole transport layer has been largely overlooked, which greatly limits the further development of PSCs. In this study, a multilayer electron transport layer (ETL) was constructed based on ZnO nanofilms, utilizing MgO and SnO2 with similar lattice dimensions to create a multilayer nanofilm structure. This design achieved energy level alignment, reduced exciton migration energy, and suppressed nonradiative recombination. Compared to the ZnO-SnO2 bilayer ETL, the ZnO-MgO-SnO2 multilayer ETL demonstrated a 142% improvement in photoelectric conversion efficiency. Finite element analysis from a microscopic perspective revealed the influence of MgO on carrier concentration. Additionally, first-principles calculations elucidated the transition of MgO from an insulator to a wide-bandgap semiconductor as it transformed from bulk crystal to nanofilm. The ZnO-MgO-SnO2 multilayer model explained the changes in the energy band structure of the multilayer ETL, providing a theoretical foundation for continuously enhancing the photoelectric conversion efficiency of PSCs.
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ChemistrySelect
·
2025
·Vol. 10
·期 14
·e202406185
·
IF 2
Yuhao Wan,Xiaoli Yang,Hang Wu,Rui Hu,Zhengya Gan,Jianjun Ding,Yi Gong,Xingyou Tian,Junfeng Li
Graphical Multilayered Ag/C-xL films were constructed by vacuum-assisted filtration of AgNWs and SWCNTs. Ag/C-7L film presented the best shielding performance more than 70 dB in X-band. This excellent performance was attributed to the alternating stacked AgNWs/SWCNTs structure, which not only enhanced multiple absorption and reflection, but also effectively avoided the oxidation of inner AgNW layer. In the face of the increasingly polluted electromagnetic environment, materials with efficient absorption of electromagnetic waves have been paid more and more attention. The structure regulation of electromagnetic interference (EMI) shielding materials with could enhance their EMI performance. In this work, multilayered single-walled carbon nanotubes (SWCNTs)/silver nanowires (AgNWs) composite film was fabricated via a facile vacuum-assisted filtration. With the increasing number of layers from 3 to 7, 7-layered composite film with introduced inner pores and gaps exhibited an excellent shielding performance more than 70 dB in X-band. This excellent performance is attributed to the alternately stacked and porous AgNWs/SWCNTs structure, which effectively constructed the interboundary polarization of AgNWs/SWCNTs and provided space to enhance multiple absorption and reflection, thus greatly improving the material's ability to absorb electromagnetic waves. In addition, the EMI SE T value of Ag/C-7L films in the X-band decreases by an average of only 4% after 1000 bends, 15% at 100% humidity and 100 °C, and 10% at −196 °C, which has excellent mechanical properties and stability. In this study, multilayer Ag/C-xL films show great potential in applications such as wearable materials, EMI protection in complex working environments, and green shielding.
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CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Honglei Wang,Zixuan Tian,Zhuang Fu,Lijun Zhao,Lei Wang,Songtao Dong,Hongbo Ju
Cu 3 SbSe 4 has garnered significant attention due to its low thermal conductivity, complex elemental composition, and economic feasibility. In this study, Cu 2.85 Ag 0.15 Sb 0.985−x Bi 0.015 Pb x Se 4 (x=0, 0.05, 0.10, and 0.15) samples were synthesized using a system of vacuum melting combined with cold isostatic pressing techniques. The impact of Pb doping on the thermoelectric properties of Cu 2.85 Ag 0.15 Sb 0.985 Bi 0.015 Se 4 was comprehensively investigated. The experimental results revealed a notable increase in carrier concentration, from 2.95×10 18 cm −3 to 8.31×10 19 cm −3 , leading to a substantial improvement on the electrical conductivity. At 573 K, the electrical conductivity of the Cu 2.85 Ag 0.15 Sb 0.835 Bi 0.015 Pb 0.15 Se 4 reached 234.26 S cm −1 , while the power factor of the Cu 2.85 Ag 0.15 Sb 0.885 Bi 0.015 Pb 0.10 Se 4 achieved a maximum value of 883.5 μW m −1 K −2 . The incorporation of Pb induced lattice defects, which modified the phonon mean free path and enhanced phonon scattering. As a result, the increased phonon scattering contributed to a reduction in lattice thermal conductivity within the Cu 2.85 Ag 0.15 Sb 0.985 Bi 0.015 Se 4 sample. The thermoelectric figure of merit (ZT) for the Cu 2.85 Ag 0.15 Sb 0.935 Bi 0.015 Pb 0.05 Se 4 reached a peak value of approximately 0.74 at 573 K, marking a 157.4% improvement compared to that of Cu 2.85 Ag 0.15 Sb 0.985 Bi 0.015 Se 4 (∼0.47). This study demonstrates that multi-element doping is a highly effective strategy for optimizing the thermoelectric properties of the Cu 3 SbSe 4 system.
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