CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Xinyue Mao,Qingnan Meng,Mu Yuan,Sifan Wang,Shiyin Huang,Yuting Qiu
Fe-based diamond -composites exhibit considerable potential for applications owing to their excellent mechanical and wear properties. However, the weak interfacial bonding between the Fe-based matrix and diamond particles has consistently limited their overall performance, adversely affecting the working efficiency of diamond tools. In this study, a Mo-B-C coating was pre-coated on the diamond surface. During the sintering process, the in-situ gradient chemical reaction between Fe and Mo-B-C coating resulted in the formation of a biomimetic ‘brick-mud’ interfacial structure consisting of Mo 2 FeB 2 , Mo 2 BC, and amorphous carbon layers. The “brick-mud” structure, combining soft and hard phases, enhanced the interfacial toughness by effectively deflecting, branching, and prolonging interfacial cracks. Additionally, the transitional diffusion of Fe within the interface layer helpd alleviate the interfacial stress concentration and suppress diamond graphitization. As a result, the optimization of interface bonding contributed to a 26.1 % increase in bending strength and a 156 % enhancement in abrasive ratio of the Fe-based diamond composites, offering a novel strategy for interfacial modification in Fe-based diamond tools.
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高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2025
·
IF 5.4
Xiaoming Liu,Yuqi Liu,Nanhao Jin,Yue Zhao,Han Chen,Xinying Wang,Yuebin Feng,Huilong Luo,Wei Li
The sulfate radical-based advanced oxidation processes (SR-AOPs) have been attracting widespread attention due to their high selectivity and oxidative potential in wastewater treatment. The future SR-AOPs depend on the R & D of adequate catalysts with high activity and stability. As emerging catalysts, complexes have shown excellent performance in various fields due to their customisable structures and tunable coordination sites. In this study, a novel mixed ligand Co-CP catalyst, namely {[Co 2 (3,3′-azpd)(4,4′-oba) 2 (H 2 O) 8 ]·2H 2 O} n was assembled by using 3,3′-azopyridine and 4,4′-dicarboxydiphenyl ether as mixed ligands via the solvothermal method. The prepared Co-CP showed remarkable performance in activating peroxymonosulfate (PMS) and degrading organic dyes: it took only 14 min to catalyze the degradation of 97 % RB, 8 min to catalyze the degradation of 96 % MB, and 3 min to catalyze the degradation of 92 % MO. Its catalytic degradation efficiency exceeds that of most reported non-homogeneous catalysts. The experiments showed that the catalyst dosage, PMS concentration and the temperature all play key roles in the PMS activation. Moreover, RB degradation obeyed the pseudo-first order model with rate constant ranging from 0.0217 to 0.4639 min −1 . The prepared Co-CP showed stability after five recycling experiments, indicating that it can serve as a s highly efficient and stable catalyst for generating free radicals (such as ·SO 4 − , ·OH) to further treat organic dyes rapidly and provide more options for future wastewater treatment.
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COMPOSITES PART B-ENGINEERING
·
2025
·
IF 14.2
Jixia Deng,Changlin Zhai,Lei Zhan,Kuihua Zhang,Tao Yang,Qinfei Ke,Chen Huang,Anlin Yin
The long-term reliability of small-diameter vascular grafts (SDVGs) is still largely confined by acute thrombosis, intimal hyperplasia and delayed endothelialization. In this study, a fibrous SDVG containing both physical and biochemical cues was developed to promote rapid endothelialization. The success of our method depends on the integration of a bi-oriented luminal surface with the conjugation of salvianolic acid B (Sal B) via aminolysis and subsequent amidation reaction. Specifically, longitudinally aligned poly (lactide acid-co-ε-caprolactone) (PLCL) microfibers having nano-grooved surface texture provided bi-oriented topographical cues to guide the elongation and migration of endothelial cells (ECs), whilst the incorporation of Sal B served as a biochemical signal to inhibit thrombosis, enhance EC growth and increase von Willebrand factor (vWF) expression in ECs. When implanted into a rat abdominal aorta defect model, the graft was able to facilitate luminal EC coverage, smooth muscle cells infiltration and collagen deposition without causing stenosis or thrombosis. The combination of bi-oriented topography with surface functionalization may become a platform design to maintain patency and accelerate in situ tissue regeneration of SDVG.
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高影响因子
ONCOLOGY REPORTS
·
2025
·Vol. 54
·期 6
·1-14
·
IF 3.9
Wei-Wei Zheng,Jia-Xuan Ding,Yang-Xin Liang,Ling Ye
Thymoquinone (TQ) is a quinone isolated from the black seed Nigella sativa and has been extensively investigated in the pharmaceutical field due to its promising therapeutic value. There have been reports on the potential anti‑cancer properties of TQ, whereas the clinical application of TQ is greatly restricted by its low water solubility and poor delivery. In the present study, TQ was encapsulated into hydroxypropyl‑β‑cyclodextrin (HP‑β‑CD) using the freeze‑drying method to form a TQ/HP‑β‑CD inclusion complex. Then, the TQ/HP‑β‑CD inclusion complex was characterized by Fourier transform infrared, differential scanning calorimetry, X‑ray diffraction and scanning electron microscopy. HP‑β‑CD as an excipient significantly enhances the water solubility of TQ, and TQ/HP‑β‑CD demonstrated excellent biocompatibility on normal cells both in vitro and in vivo. Moreover, the complexation with HP‑β‑CD enhanced the anticancer activity of TQ against non‑small cell lung cancer cells and its mechanism of action is related to ferroptosis mediated by NF‑κB. Such an enhanced cytotoxic effect may be attributed to the effective complexation of TQ in HP‑β‑CD, which enhances its water solubility and bioavailability.
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DOI
PubMed
高影响因子
TOXICOLOGY
·
2020
·
IF 4.099
Yuwei Yang,Jing Chen,Qin Gao,Xin Shan,Jie Wang,Zhiyang Lv
Ginkgolide B (GB), a main constituent of Ginkgo biloba extracts, reduces hepatic lipid accumulation and ameliorates nonalcoholic fatty liver disease (NAFLD) in obese mice, but the potential mechanism is unclear. Here we investigated the attenuated effects of GB on the disorder of lipid metabolism, oxidative stress and iron deposition in NAFLD and its potential mechanism associated with ferroptosis. Our preliminary research focused on high fat diet (HFD)-induced ApoE −/− mice gavaged with GB (20 and 30 mg kg -1 •d -1 , approximately equal to the human dose of 2 and 3 mg kg -1 •d -1 , respectively) and palmitic acid and oleic acid (PA/OA)-induced HepG2 cells treated with GB (4, 8, 16 μg/mL), respectively. Hepatic injury was assessed via biochemical, histopathological and immunohistochemical evaluations. In order to examine the mechanism of GB on ferroptosis-regulated pathway, we analyzed the expression levels of ferroptosis-related proteins, including nuclear factor erythroid 2 (Nrf2), glutathione peroxidase 4 (GPX4), heme oxygenase-1 (HO-1), transferrin receptor-1 (TFR1) and ferritin heavy chain-1 (FTH1) in vivo and vitro experiments by Western blotting. In order to further verify the correlation pathway of ferroptosis, after Nrf2 short hairpin RNA interference, we analyzed the effects of GB on Nrf2 pathway. Both HFD-fed mice and PA/OA-induced HepG2 cells displayed ferroptosis-based panel of biomarkers such as iron overload with the up-regulation of TFR1 and the down-regulation of FTH1, lipid peroxidation and inhibition of Nrf2 activity, which further induced GPX4 and HO-1 levels. Remarkably, after Nrf2 interference, GB treatment significantly increased Nrf2 expression, indicating that GB exerted anti-ferroptosis effects by activation of Nrf2 pathway. Our results are preliminarily illustrated that GB treatment has a specific effect on lipid accumulation and oxidative stress caused ferroptosis in NAFLD, possibly through Nrf2 signaling pathway.
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PubMed
高影响因子
Journal of Materials Chemistry C
·
2021
·Vol. 10
·期 2
·665-671
·
IF 7.393
Dandan Gao,Jiyang Xie,Jian Wang,Wanbiao Hu
It is widely accepted that localized electron hopping induces colossal permittivity in the bulk of transition-metal-based materials. However, the mechanism and the control of the electron hopping process remain to be explored. In this work, the effect of the B-site environment and multiple Cu valence-states on electron hopping were experimentally revealed in the LiCuNb2.95M0.05O9 (M = Mg, Ti) systems. The results demonstrated that Mg/Ti substitution for Nb5+ at the B-site effectively causes multivalent states of A-site Cu cations, i.e. Cu+/Cu2+/Cu3+, and distorted NbO6 octahedra. Upon Mg/Ti substitution, the dielectric permittivity was enhanced by approximately two orders of magnitude (at 1 kHz and 300 K) and an additional dielectric relaxation was induced. More importantly, it was revealed that the B-site substitution effectively adjusted the activation energy and average distances for the electron hopping.
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高影响因子
Analytical Methods
·
2020
·Vol. 12
·期 27
·3484-3489
·
IF 2.596
Xinyue Rao,Huan Jiang,Ling Li,Feng Xiang,Zhongde Liu
Any signals, if their intensities have a simple functional relationship with analyte concentration, can be applied for analytical purposes. Among them, pressure measurement as a signalling technique has been extensively utilized to develop portable and quantitative bioanalysis, with the advantages of highly sensitive detection of a variety of biomedical targets. In this contribution, it was found that polymyxin B sulphate (PMB) could significantly inhibit the catalytic ability of platinum nanoparticles (PtNPs) prepared in different protocols in the H2O2 breakdown reaction. By employing sodium citrate as the reducing agent to prepare the platinum nanoparticles (C-PtNPs) as an example and monitoring the pressure signal changes of the C-PtNP catalyzed H2O2 breakdown against the reaction time, a sensitive, cost-effective, rapid and reliable analysis method for PMB is established on the basis of the pressure signal readout. The proposed method has a detection limit of 28.6 nM and can selectively detect PMB in both POLY-MxB powder injection and human urine samples, demonstrating its potential in bioanalysis, which would be significant to address biological, clinical and medicinal requirements.
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PubMed
高影响因子
ENVIRONMENTAL RESEARCH
·
2021
·
IF 6.498
Lin Hu,Dong Mao,Liu-han Yang,Ming-sheng Zhu,Zheng-hao Fei,Shi-xin Sun,Dong Fang
Enhancing photocatalytic performance via electronic modulation have attracted much attention for synergetic photocatalytic degradation of antibiotic pollutant. In this study, a new hetero-structured system is raised, which comprises In 2 S 3 coupled to In-MOF and operates as an efficient photocatalyst for RhB degradation. The formation of hetero-structure and occurred electron modulation of In 2 S 3 /In-MOF hybrid was confirmed by relevant characterizations. Surprisingly, the In 2 S 3 /In-MOF hybrid represented enhanced photocatalytic ability over In-MOF. The photocatalysis of Rhodamine B in presence of In 2 S 3 /In-MOF hybrid has achieved 92.2 % degradation.
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PubMed
高影响因子
OPTICAL MATERIALS
·
2022
·
IF 3.754
Zhengdong Zhang,Xingyu Chen,Shanhua Chen,Qi Dong,Xinyi Zhang,Ao Jiang,Dafu Zhang,Yuli Di,Taishan Li
A Z-scheme TiO 2 /g-C 3 N 4 heterostructure system was used to activate peroxymonosulfate (PMS) for the photocatalytic degradation of Rhodamine B (RhB). The Z-scheme TiO 2 /g-C 3 N 4 heterojunction photocatalysts were successfully synthesized by using a simple impregnation method. The structure and surface morphology of the samples were characterized by X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FT-IR), X-Ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The optical and electrochemical properties were characterized by UV–vis diffuse reflectance spectroscopy (DRS), photoluminescence (PL) electrochemical impedance spectroscopy (EIS).The results indicated that the Z-scheme heterojunction between TiO 2 and g-C 3 N 4 was successful established and the optimal photocatalytic activity was achieved when the mass ratio of TiO 2 to g-C 3 N 4 is 10:1. The degradation rate of RhB (20 mg/L, 50 mL) was 82.79% within 120 min simulated sunlight irradiation. After adding PMS to 10% TiO 2 /g-C 3 N 4 heterojunction photocatalysts , the reaction rate constant (k) of the TiO 2 /g-C 3 N 4 -PMS system is about 11.39 times as large as that with 10% TiO 2 /g-C 3 N 4 system. Moreover, the free radical trapping experiments results demonstrated that h + and SO 4 − · were the main active species in the TiO 2 /g-C 3 N 4 -PMS system.
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高影响因子
Materials Science and Engineering B-Advanced Functional Solid-State Materials
·
2021
·
IF 4.051
Hailin Tian,Yan Gu,Houle Zhou,Yingping Huang,Yanfen Fang,Ruiping Li,Changcun Tang
In this work, bismuth bromideoxide (BiOBr), a typical visible-light photocatalyst , was coated with Zr-based MOFs (UiO-66) to prepare the BiOBr@UiO-66 photocatalysts with different mole ratios by the solvothermal method. The core–shell BiOBr@UiO-66 photocatalysts with abundant activated sites was obtained due to the modification of UiO-66 on the surface of BiOBr. The structure and properties of the BiOBr@UiO-66 photocatalysts were characterized by several methods. The 30% BiOBr@UiO-66 photocatalysts exhibited the biggest photodegradation rate constant (k = 0.0669 min −1 ) for RhB under visible-light irradiation than pure BiOBr (k = 0.0281 min −1 ) and UiO-66 (k = 0.0041 min −1 ). Additionally, the 30% BiOBr@UiO-66 photocatalysts exhibited the enhanced photocatalytic activity and stable recyclability due to the effective electron-hole separation and synergistic effect. The photocatalytic mechanism of the BiOBr@UiO-66 photocatalysts for RhB, which contained a photosensitization process, was discussed with the trapping experiment of active species and the proposed energy band alignments.
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高影响因子
3 Biotech
·
2021
·Vol. 11
·期 6
·1-13
·
IF 2.406
Huang Kai,Zhang Bo,Chen Yu,Wu Zhe-Ming,Liu Zhi-Qiang,Zheng Yu-Guo
Amphotericin, as an important macrolide antibiotic, is synthesized by Streptomyces nodosus . A high-yield S. nodosus ZJB2016050 was obtained by mutagenesis in our lab with the advantages of high yield, short fermentation cycle and few by-products, which was more suitable for industrial production. The fermentation differences in 50-tons bioreactor between S. nodosus ATCC14899 and S. nodosus ZJB2016050 were compared. The amphotericin B (AmB) yield of S. nodosus ZJB2016050 was 9.73 mg/g at 96 h, which was 30% higher than that of S. nodosus ATCC14899. The by-product amphotericin A (AmA) production of S. nodosus ZJB2016050 was 78% lower than that of S. nodosus ATCC14899. By performing whole-genome sequencing of S. nodosus ZJB2016050 and comparative genome analysis with the wild-type S. nodosus ATCC14899, it was found that the two strains have high synteny, but each has a special gene fragment. The genes functions of fragment were identified in the amino acid transport and metabolism, carbohydrate metabolism and lipid transport and metabolism. The gene functions of SNP (single nucleotide polymorphism) genes were identified in amino acid transport and metabolism, carbohydrate metabolism, coenzyme metabolism and secondary metabolites biosynthesis. The difference in signal-regulation and transcription may be the main reason for the differences between these two strains. Three GntR family egulatory factors of S. nodosus ATCC14899 may reduce the synthesis of amphotericin. Based on the analysis of comparative genomes, the effects of corn oil in S. nodosus ATCC14899 and S. nodosus ZJB2016050 were also compared. The results showed that corn oil can promote the fermentation of S. nodosus ZJB2016050. The S. nodosus ZJB2016050 may degrade fatty acids faster, and the degraded acyl-coenzyme can be used to synthesize amphotericin.
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PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2022
·Vol. 33
·期 22
·17814-17827
·
IF 2.779
Liu Zhuofeng,Liang Wenxue,Zhang Weijun,Wang Fenglin,Xun Yan,Chen Tongting,Li Wei,Chen Xingyu,Mao Haijun
The co-firing compatibility between green tape and the Ag electrode is a crucial characteristic in low-temperature co-fired ceramic (LTCC) technology and plays a vital role in improving the performance and application status of LTCC device modules. In this work, we studied the effects of lead content on the glass viscosity, the microstructure, and co-firing compatibility of silver electrode film. It was found that the softening point and viscosity of the glass were decreased, and the wettability between the glass and silver was improved with the increase of the lead content, which promoted the co-firing densification and interfacial bonding between the silver electrode film and the ceramic layer. The film presented the best electrical properties co-firing at 875 °C for 15 min, with the resistivity of 1.21 mΩ/sq. And the film was densified. The sintering interface was clear and well bonded. The results showed that an appropriate lead content in glass could effectively improve the interfacial bonding and the electrical properties during co-fired process, providing a new control methodology for realizing co-fired matching of the silver electrode film with low-temperature co-fired ceramics.
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