MICROCHEMICAL JOURNAL
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2026
·
IF 5.2
Huiwen Xiong,Fei Cun,Yuanxi Lu,Heng Liu,Cheng Bao,Daixin Ye,Wenhao Weng
Although numerous peroxidase (POD) mimics have been developed, most still suffer from limited stability and catalytic efficiency. In this work, platinum-decorated mesoporous gold (mesoAu@Pt) nanozymes with ultrahigh POD-like activity were synthesized via an in-situ growth strategy. The mesoporous gold nanostructures served both as carriers to stabilize Pt nanoparticles (PtNPs) and as a scaffold to enhance their catalytic activity. Owing to the uniform distribution of PtNPs, a single mesoAu@Pt particle exhibited exceptional catalytic efficiency, with a catalytic efficiency ( K cat ) of 1.05 × 10 7 s −1 . The optimized nanozyme enabled sensitive and selective colorimetric detection of both H₂O₂ and glucose, achieving ultralow detection limits of 0.1 μM and 0.4 μM, respectively, with wide linear ranges. The total turnaround time (TAT) was 15 min for H₂O₂ and 45 min for glucose. Furthermore, mesoAu@Pt successfully distinguished cancer cells from normal cells based on their endogenous H₂O₂ release, and demonstrated reliable performance in human serum samples with <6% relative error compared to a glucometer. These findings highlight the potential of mesoAu@Pt as a robust and versatile biosensing platform for blood glucose monitoring, cancer diagnostics, and next-generation point-of-care applications.
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ACS Applied Polymer Materials
·
2025
·
IF 4.7
Xuewei Yang,Rui Li,Yong Liu,Jian Xu,Ning Zhao
The rapid evolution of flexible wearable electronics necessitates efficient thermal management, driving the demand for materials that are not only thermally conductive but also electrically insulating and flexible. In this study, a thermal conductive composite with aligned filler structure was fabricated using catechol/tetraethylenepentamine (CAT-TEPA) surface-modified hexagonal boron nitride (h-BN) and mesophase pitch-based carbon fibers (MPCF) as fillers, and cellulose acetate butyrate (CAB) as the polymer matrix via evaporation self-assembly and hot-pressing. By optimizing the interface through CAT-TEPA modification and leveraging the long-range structural alignment of MPCF, an efficient thermal conduction network of h-BN sheets was formed. The composite containing 50 wt % total filler content (3 wt % MPCF) achieved an exceptional in-plane thermal conductivity of 21.75 W/mK, and a high volume resistivity of 1.5 × 1011 Ω·cm. Furthermore, the material demonstrated remarkable flexibility, making it a promising candidate for thermal management applications in flexible electronics.
研究领域:
材料科学
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热工学
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柔性电子
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聚合物复合材料
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Journal of Materials Chemistry B
·
2021
·Vol. 9
·期 15
·3401-3411
·
IF 6.331
Ming Wang,Miao Li,Yunli Wang,Yiran Shao,Yingchun Zhu,Shiping Yang
Hydroxyapatite (HA) has attracted wide attention for medical application due to its biocompatibility and bioactivity. However, the infection problems of HA remain among the leading reasons for implantation failure. Thus, it is urgent to endow HA biomaterials with antibacterial activity. Herein, the high antibacterial activity was achieved by introducing trace Mn3+ and H vacancy couples in HA through a facile heat-treatment strategy in air. The theoretical results indicated that Mn3+ was preferentially substituted for the Ca(2) site in the HA structure with a charge-compensating H vacancy appearing at the adjacent OH− site. The antibacterial tests showed that Mn-HA possessed antibacterial activity towards both E. coli and S. aureus with trace Mn content at the ppm level, and implied that Mn3+ and centers may play an important role in the antibacterial process. The Mn3+ and couples in Mn-HA, serving as oxidative and reductive centers respectively, could then collectively participate in the CoQ/CoQH2 redox cycling and synergistically facilitate the accumulation of CoQ˙− and ROS radicals. This enhanced ROS production was the main factor to endow Mn-HA with efficient antibacterial activity. Moreover, the in vitro bioactivity assay showed that Mn-HA materials exhibited enhanced osteogenic activity and good biocompatibility. Therefore, this work not only provides a feasible method to control the oxidation state of Mn elements in HA, but also proposes a novel trace Mn3+-doped HA for potential applications in tissue engineering.
研究领域:
材料科学
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生物材料
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生物医学工程
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高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2019
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IF 4.029
Zhuo Zhang,Xiaoming Duan,Baofu Qiu,Zhihua Yang,Delong Cai,Peigang He,Dechang Jia,Yu Zhou
Textured hexagonal boron nitride (h-BN) matrix composite ceramics were prepared by hot pressing using 3Y 2 O 3 -5Al 2 O 3 (mole ratio of 3:5) and 3Y 2 O 3 -5Al 2 O 3 -4MgO (mole ratio of 3:5:4) as liquid phase sintering additives, respectively. During the sintering process with liquid phase environments, platelike h-BN grains were rotated to be perpendicular to the sintering pressure, forming the preferred orientation with the c -axis parallel to the sintering pressure. Both h-BN matrix ceramic specimens show significant texture microstructures and anisotropic mechanical and thermal properties. The h-BN matrix ceramics prepared with 3Y 2 O 3 -5Al 2 O 3 -4MgO possess higher texture degree and better mechanical properties. While the anisotropy of thermal conductivities of that prepared with 3Y 2 O 3 -5Al 2 O 3 is more significant. The phase compositions and degree of grain orientation are the key factors that affect their anisotropic properties.
研究领域:
材料科学
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无机非金属材料
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先进陶瓷
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热管理材料
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结构功能一体化材料
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Journal of Environmental Chemical Engineering
·
2023
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IF 7.7
Miao Liu,Zhenghao Lu,Linghan Yang,Renmin Gao,Xinying Zhang,Yongjing Wang,Yonghao Wang
Electrocatalytic reduction of nitrate to ammonia is an effective method for the recycling of NO 3 - -N in the field of nitrate polluted water treatment . In this work, Co-N-C was prepared in this work by pyrolysis of Co-based metal organic framework at 700 °C and it can achieve 100 % selectivity to ammonia under the optimum experiment conditions. Impressively, no harmful nitrite generated in the reduction process because the reduction rate constant of Co-N-C for NO 2 - -N is higher than that of NO 3 - -N. Experiment results show that the chemical adsorption rather than electrostatic adsorption dominated among Co-N-C and free NO 3 - , which is significant for the subsequent electronic reduction process. Mechanism analysis indicated the active hydrogen (H*) reduction mechanism is predominate for Co-N-C but the direct electron mechanism is predominate for Co-C during the reduction from NO 3 - to NO 2 - . While for Co-N-C and Co-C, the subsequent reduction of NO 2 - to NH 4 + was conducted by the direct electron mechanism. The present work not only explores high performance for the selectively electrocatalytic reduction from nitrate to ammonia but also promote new inspiration for the preparation of other Co-based functional materials for reducing the production of nitrite.
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NANO
·
2022
·
IF 1.438
X. Du,L. Wang,Q. Xia,Q. Hu,A. Zhou
For lithium-ion batteries (LIBs) with high energy density, it is critical to develop reliable and high-capacity anode materials. In this work, d-Ti 3 C 2 T x /h-BN hybrid layered nanocomposites with uniform distribution are synthesized using a simple liquid phase blending method and investigated as an anode material for LIBs. The results reveal that the uniformly dispersed h-BN anchored on the d-Ti 3 C 2 T x nanosheets can effectively prevent the d-Ti 3 C 2 T x nanosheets from restacking during charging and discharging processes, as well as improve the electronic conductivity. The studies show that the electrochemical performance, such as the capacity and cyclic stability, of d-Ti 3 C 2 T x /h-BN electrode is better than that of pure d-Ti 3 C 2 T x materials.
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RENEWABLE ENERGY
·
2022
·
IF 8.634
Rui Chen,Qinpan Qiu,Xiao Peng,Chao Tang
Natural ester is regarded as a potential alternative to mineral insulating oil and has a wide range of applications in power system , but its electrical properties and thermal conductivity still need to be improved. Nano modification technology can improve the performance of natural ester to ensure the stability and reliability of natural ester in power equipment. In this study, nano modified natural ester is prepared with APTES surface modified h-BN, and the mechanism of enhancing the properties of natural ester is explored from the microscopic perspective by molecular simulation. The experimental results showed that nano h-BN had good dispersion stability in natural ester after surface modification with APTES. The electrical properties and thermal conductivity of the nano modified natural ester have been greatly improved, and the relative optimal doping concentration of nanoparticles is 0.03 g/L. The simulation results show that the interfacial thickness between nanoparticles and natural ester is larger and more tightly bound after surface modification, which is beneficial to reduce thermal resistance and improve thermal conductivity of natural ester insulating oil. The traps at the interface between nanoparticles and natural ester can capture free electrons in the oil, thus improving the breakdown voltage of natural ester insulating oil.
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Nanoscale
·
2023
·Vol. 15
·期 7
·3199-3211
·
IF 6.7
Feng-Rui Wang,Xiao-Xiao Sheng,Min Zhang,Min Miao,Jin-Ku Liu,Ji-Chang Liu,Yun-Sheng Ma,Peng-Peng Liu
Zinc molybdate (ZMO) is a safe and effective grafting material for anticorrosion. Herein, we reported the synthesis of ZMO/h-BN with the labyrinth of capillary pores owing to the in situ growth of ZMO on flake hexagonal boron nitride (h-BN) using the hydrothermal method. The special morphological structure provided a tortuous path for aggressive species to the steel substrate, which extended and blocked the transmission of aggressive species, enhancing the physical corrosion barrier performance. In addition, the capillary pores of ZMO contributed to the competitive adsorption of Cl− in an electrolyte and reduced the diffusion of aggressive species, thus further delaying the corrosion process. Moreover, the capture of oxygen by forming a B–O bond with h-BN and the formation of a molybdate passive film are beneficial for the inhibition of cathodic and anodic reactions. As verified by electrochemical impedance spectroscopy (EIS), the anticorrosion performance of ZMO/h-BN coating increased by 49.58% and 130.72% compared with ZMO and epoxy resin (EP) coatings after immersing in a NaCl aqueous solution (3.50 wt%) for 72 h. This coating matrix provides an avenue for molybdate-based corrosion remediation.
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SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2023
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IF 4.4
Zhiqiang Wang,Siqi Duan,Ruiting Zhang,Lin Ma,Ke Lin
Chiral molecules play a very important role in biological systems, and more and more chiral drugs are used in the treatment of diseases. Mandelic acid (MA) is an important chiral starting substance or the key intermediate of some chiral drugs, and the rapid detection of its chiral purity is very important in the synthesis, separation and detection of drugs. In this study, we developed a method for rapid determination of chiral purity of MA by Raman spectroscopy, and measured a series of Raman spectra of different chiral MA. Through the analysis, it is found that the OH stretching vibration peak can be used to identify the components of chiral molecules, and the enantiomeric excess ( ee value) obtained is in good agreement with the real value, and the error is about 5%. The experimental detection speed is fast and the efficiency is high. Our work firstly provides a new idea for the purity detection of chiral molecules by the original Raman spectrum.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2023
·
IF 5.2
Yanhua Lei,Mengchao Ding,Sha Cheng,Da Huo,Fei Zhang,Tao Liu,Yuliang Zhang
The transition metal sulfide MoS 2 has attracted great interest from the scientific community as an excellent co-catalyst for promoting Fe 2+ /Fe 3+ cycling in advanced oxidation processes to enhance the efficiency of H 2 O 2 decomposition. A photothermal-enhanced photo-Fenton pollutant degradation strategy was proposed. Hybrids of magnetically recyclable Fe 3 O 4 fabricated 1 T-2 H MoS 2 (1 T-2 H MoS 2 @Fe 3 O 4 ) with excellent photothermal conversion efficiency were fabricated to overcome the limitations of relatively low catalytic activity and cycling stability in Fenton reaction. XRD , Raman, TEM and hysteresis loop were employed to evaluate the heterogeneous phase 1 T-2 H MoS 2 nanoflowers as well as the magnetic property . The 1 T-2 H MoS 2 @Fe 3 O 4 hybrids with excellent photothermal conversion efficiency not only enhance the reaction temperature of the Fenton reaction occurring on the material surface, but also demonstrate an effective interfacial photothermal water evaporation efficiency. Due to the synergistic effect of photocatalysis and photo-Fenton catalytic reaction , a quick degradation of simulated pollution were achieved in 5 mins with 98.3% degradation, which could be further improved to 99% due to the photothermal promoting reaction. The 1 T-2 H MoS 2 @Fe 3 O 4 hybrids exhibit good magnetic recyclability, cyclic stability and photothermal performance, which endow it a wide potential application in the field of environmental remediation and the field of water evaporation at the photothermal interface, etc.
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PROGRESS IN ORGANIC COATINGS
·
2023
·
IF 6.6
Nanqi Shi,Haiyan Li,Xin Li,Hongxin Luo,Jiaying Jin,Jiayu Wang,Shuang Li
Two-dimensional hexagonal boron nitride (h-BN) has excellent corrosion resistance and barrier ability, showing unique advantages in the field of anti-corrosion. The h-BN was assembled with Zeolite imidazolate framework material (ZIF-8) and benzimidazole (BI), and an active filler (h-BN/ZIF-8@BI) with shielding and active corrosion resistance was prepared. Zeolite imidazolate framework material was in-situ grown on h-BN surface and loaded with benzimidazole (BI), prepared an active anticorrosive filler with high shielding property (h-BN/ZIF-8@BI). The microstructure, crystal form, element composition, corrosion inhibition ability and thermal stability of h-BN/ZIF-8@BI were studied. The barrier, corrosion inhibition and anti-friction properties of EP/h-BN/ZIF-8@BI combined with F51 epoxy resin were explored. EIS test shows that the corrosion inhibition efficiency of h-BN/ZIF-8@BI is as high as 81.8 %. The impedance modulus of the steel matrix protected by the composite coating was about 2 orders of magnitude higher than that of the control sample, showing excellent barrier ability. In addition, the salt spray test proves that the composite coating has excellent corrosion inhibition characteristics. Taber testing machine shows that the wear mass loss of EP/h-BN/ZIF-8@BI coating is 34.5 % lower than that of EP coating. This work provides a novel idea for the preparation of high barrier, active anticorrosive and wear resistant anticorrosive coatings, and provides a new horizon of the composite coatings.
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FASEB JOURNAL
·
2022
·Vol. 36
·期 10
·e22530
·
IF 5.834
Chengyu Yang,Yang Liu,Ziyan Wang,Minmin Lin,Chao Liu
Despite the best treatment, approximately 10% of fractures still face undesirable repair and result in delayed unions or non-unions. Dynamic mechanical stimulation promotes bone formation, when applied at the correct time frame, with optimal loading magnitude, frequency, and repetition. Controlled mechanical loading significantly increases osteogenic cells during the matrix deposition phase of bone repair. In the bone defect, the blood vessel network guides the initial bone formation activities. A unique blood vessel subtype (Type H) exists in bone, which expresses high levels of CD31 and endomucin, and functions to couple angiogenesis and osteogenesis. However, how this form of controlled mechanical loading regulates the Type H vessels and promotes bone formation is still not clear. Sphingosine 1-phosphate (S1P) participates in the bone anabolic process and is a key regulator of the blood vessel. Its receptor, sphingosine 1-phosphate receptor 1 (S1Pr1), is a mechanosensitive protein that regulates vascular integrity. Therefore, we hypothesis that controlled anabolic mechanical loading promotes bone repair by acting on Type H vessels. To study the effect of S1Pr1 on loading induced-bone repair, we utilized a stabilized tibial defect model, which allows for the application of anabolic mechanical loading. Mechanical loading upregulated S1Pr1 within the entire defect, with up to 80% expressed in blood vessels, as observed by deep tissue imaging. Additionally, S1Pr1 antagonism by W146 inhibited the anabolic effects of mechanical loading. We showed that mechanical loading or activating S1Pr1 could induce YAP nuclear translocation, a key regulator in the cell's mechanical response, in endothelial cells (ECs) in vitro. Inhibition of S1Pr1 in endothelial cells by siRNA reduced loading-induced YAP nuclear translocation and expressions of angiogenic genes. In vivo, YAP nuclear translocation in Type H vessels was up-regulated after mechanical loading but was inhibited by antagonizing S1Pr1. S1Pr1 agonist, FTY720, increased bone volume and Type H vessel volume, similar to that of mechanical stimulation. In conclusion, controlled anabolic mechanical loading enhanced bone formation mainly through Type H vessels in a S1Pr1-dependent manner.
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