JOURNAL OF ELECTRONIC MATERIALS
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2024
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IF 2.2
Xue Xiangyong,Lu FengFei,Liu Xing,Cheng Lichun,Li Zhenchun,Yao Qingrong,Long Qianxin,Shao Hongyu
Sugar-derived carbon materials have special electrical and optical properties, and their hybridization with magnetic alloys can generate enhanced attenuation constants and better impedance matching due to electrical and magnetic interactions. This study prepared CoNi/C composite materials and modified the microstructure and dielectric constant of magnetic alloys by selecting carbon sources and controlling carbonization processes. The results showed that CoNi/C flakes carbonized using glucose-derived carbon at 500°C exhibited a significant reflection loss (RL) of −42.91 dB and an effective absorption bandwidth covering 6.08 GHz (RL < −10 dB). In addition, CST simulations show that CoNi/C significantly reduces the radar cross section (RCS) value by 35.28 dB m 2 . Compared with cornstarch- and fructose-derived carbon, glucose-derived carbon exhibits better impedance matching performance and wider absorption bandwidth.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
·
IF 9.7
Chang Liu,Guijuan Wei,Honglei Chen,Weiqiang Sun,Xixia Zhao,Xin Zhao
Charge redistribution strategy driven by geometry regulation of metal cores or carbon defect engineering is an effective approach to optimize the electronic structure of traditional carbon, which can boost hydrogen evolution reaction (HER) activity to inert carbon. The synergistic effect of these two methods is anticipated to more effectively manipulate the charge distribution of carbon materials. Herein, a facile low-temperature methane plasma strategy is developed, from which highly dispersive hexagonal close-packed (hcp) NiPt alloy encapsulated in the defect-rich carbon shell grown on the Ni foam (C@hcp-NiPt/NF) can be fabricated. The optimized C@hcp-NiPt/NF displays low overpotentials of 60, 110, and 60 mV at 100 mA cm −2 in 1.0 M KOH, 1.0 M PBS, and 0.5 M H 2 SO 4 , respectively. Furthermore, it demonstrates exceptional stability under alkaline, neutral and acidic conditions. Raman spectroscopy, in-situ electrochemical impedance spectroscopy (EIS), combined with theoretical calculations have unequivocally validate that the incorporation of carbon defects and the regulation of geometric structure in NiPt cores significantly augment the charge density on the carbon shell, thereby optimizing the binding affinity of carbon with H 2 O and hydrogen, ultimately resulting in improved HER performance.
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ACS Nano
·
2017
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IF 13.942
Guodong Zou,Qingrui Zhang,Carlos Fernandez,Gang Huang,Jianyu Huang,Qiuming Peng
Rational design of heterogeneous electrode materials with hierarchical architecture is a potential approach to significantly improve their energy densities. Herein, we report a tailored microwave-assisted synthetic strategy to create heterogeneous hierarchical Ti3SiC2@C-containing Na2Ti7O15 (MAX@C-NTO) composites as potential anode materials for high-performance sodium storage in a wide temperature range from 25 to 80 °C. This composite delivers first reversible capacities of 230 mAh g–1 at 200 mA g–1 and 149 mAh g–1 at 3000 mA g–1 at 25 °C. A high capacity of ∼93 mAh g–1 without any apparent decay even after more than 10 000 cycles is obtained at an ultrahigh current density of 10 000 mA g–1. Moreover, both a high reversible capacity and an ultralong durable stability are achieved below 60 °C for the same composites, wherein a 75.2% capacity retention (∼120 mAh g–1 at 10 000 mA g–1) is achieved after 3000 cycles at 60 °C. To the best of our knowledge, both the sodium storage performances and the temperature tolerances outperform those of all the Ti-based sodium storage materials reported so far. The superior sodium storage performances of the as-synthesized composites are attributed to the heterogeneous core–shell architecture, which not only provides fast kinetics by high pseudocapacitance but also prolongs cycling life by preventing particle agglomeration and facilitates the transportation of electrons and sodium ions by large micro/mesopore structure.
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JOURNAL OF DRUG DELIVERY SCIENCE AND TECHNOLOGY
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2024
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IF 4.5
Yan Wang,Jiaqi Lu,Menghui Wan,Yanbao Zhao
Asymmetric nanocarriers with different functions can achieve synergistic effect in cancer treatment. In this study, asymmetric carbon-silica (C-SiO 2 ) carriers were prepared for drug delivery and combining therapy. The C-SiO 2 carriers presented acorn-like structure with dendritic mesoporous silica hat and carbon body. The carbon body render the carriers photothermal effect. The prepared C-SiO 2 carriers with size around 130 nm have improving cell uptake efficiency, and excellent biocompatibility. After loading doxorubicin hydrochloride (DOX), menthol (LM) was used to seal the loaded drug (DOX@C-SiO 2 -LM). LM coating can melt above the phase transition temperature, leading to the release of loaded cargo. The DOX@C-SiO 2 -LM displayed temperature/NIR-triggered drug release.
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DIAMOND AND RELATED MATERIALS
·
2024
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IF 4.3
Linyun Zhang,Shanxin Li,Xuzhou Jiang,Hongying Yu,Yijing Sun
Carbonaceous materials have great prospects in microwave absorption due to their lightweight and corrosion resistance. However, their high conductivity leads to poor impedance matching, posing a significant challenge for obtaining outstanding microwave absorption (MA) materials from carbonaceous materials. In this work, the core-shell ZnO/C nanorods (ZCNs) are prepared by covering conductive carbon on the surface of ZnO nanorods through a simple stirring process in ambient temperature and calcination treatment. The thickness of carbon shell is carefully regulated to realize appropriate impedance matching and strong microwave dissipation capability. ZCN with 30.2 nm of carbon shell achieves outstanding microwave absorption in low frequency and broadband microwave absorption because of the synergies of optimized impedance matching and enhanced dielectric loss: the reflection loss of 49.9 dB at 6.32 GHz, and the effective absorption bandwidth of 6.4 GHz at a corresponding thickness of 2.0 mm. RCS simulation results have verified its excellent performance in practical application. This study proposes a simple and effective idea for the efficient utilization of carbonaceous materials in microwave absorption.
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JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION
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2024
·Vol. 39
·期 4
·805-813
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IF 1.3
Xu Tianxing,Wu Jie,Li Yajuan,Xiao Hong
We synthesized size-controllable nanoparticles with homogeneous distribution of carbon and Sn/SnO 2 by a solvothermal method. The effects of different carbon content and hydrothermal time on the composition, morphology and electrochemical properties of the materials were investigated. Compared with bulk materials, nanoparticles materials not only have high specific surface area, but also can provide abundant reaction sites, thus enhancing the electrochemical activity of electrode materials. More importantly, the optimized microspheres Sn/8C-24 delivers a superior electrochemical performance, achieving a specific discharge capacity of 700.4 mAh·g −1 after 150 cycles at 0.5 A·g −1 , and the Coulomb efficiency reaches 98.65%, which is promising for anode of LIBs.
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Journal of Materiomics
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2024
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IF 8.4
Chengwan Yang,Kewei Li,Mengen Hu,Xinyang Li,Ming Li,Xiaoye Hu,Yue Li,Zhulin Huang,Guowen Meng
Carbon-based materials, renowned for their low density, adjustable electrical conductivity, superior corrosion resistance and mechanical properties, and have found extensive applications in the field of electromagnetic wave absorption (EMWA). Despite their merits, the current EMWA and thermal insulation capabilities are not fully optimized, thereby restricting their applications in the aerospace sector. Herein, we introduce a combinatory methodology employing electrospinning followed by pyrolysis to in-situ integrate ZrO 2 and ZrB 2 nanoparticles onto the surface of carbon nanofibers, culminating in a flexible ZrO 2 /ZrB 2 /C nanofiber felt. The integration of ZrO 2 and ZrB 2 nanoparticles significantly augments impedance matching and promotes multifaceted scattering and interfacial polarization. Consequently, the ZrO 2 /ZrB 2 /C nanofiber felt demonstrates a minimum reflection loss (RL min ) of –54 dB and the effective absorption bandwidth (EAB, RL≤–10 dB) is 3.1 GHz. Moreover, the three-dimensional porous architecture and the presence of multiple heterogeneous interfaces endow the ZrO 2 /ZrB 2 /C nanofiber felt with an ultralow thermal conductivity of 0.016 W⸱m −1 ⸱K −1 at 1100 °C, underscoring its exceptional potential for infrared stealth. This work shows considerable guiding significance for the design of bi-functional EMWA materials with ultralow thermal conductivity in aerospace field.
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JOURNAL OF ELECTROCERAMICS
·
2025
·
IF 2.6
Lin Cheng,He Yuchan,Zhuang Wuyi,Chen Sili,You Zhixian,Zhao Guiying,Huang Zhigao,Li Jiaxin
The development of high-performance silicon/silicon oxide (Si/SiO x ) anodes has attracted great attention in the field of next-generation high-energy lithium-ion batteries (LIBs). However, preparing effective Si/SiO x composite materials to address issues such as poor cycling stability, subpar initial coulombic efficiency (ICE), and subpar interface compatibility remains a challenge. This work proposes a simple strategy for preparing Fe/Fe 3 C particle modified thin-layer carbon-coated Si/SiO x composite materials using a mixture of resorcinol formaldehyde (RF) precursor pyrolysis and ultrasonic treatment (referred to as C@Si/SiO x -Fe/Fe 3 C, abbreviated as CSSO-Fe/Fe 3 C). These composite materials are used as anodes for LIBs. Exploiting the benefits of its structure and composition, the CSSO-Fe/Fe 3 C anode offers a high ICE value of 68.7% and maintains a capacity of 563.2 mAh g −1 even after 1200 cycles at a current density of 2.5 A g −1 . Comprehensive characterization and electrochemical studies have elucidated the interface compatibility and structural stability mechanisms induced by the small amount of Fe/Fe 3 C doping and carbon coating, which explain the high capacity and stable cycling performance. Furthermore, when paired with LiCoO 2 cathode, the assembled LiCoO 2 ||CSSO-Fe/Fe 3 C coin-type full battery has a capacity of 80.7 mAh g −1 and a capacity retention rate of 76.6% after 200 cycles at 1.0 C. This synthesis approach offers valuable insights for designing high-performance Si/SiO x electrode materials.
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Acta Pharmaceutica Sinica B
·
2024
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IF 14.7
Xiong Chen,Jinfu Qian,Shiqi Liang,Jianchang Qian,Wu Luo,Yujuan Shi,Hong Zhu,Xiang Hu,Gaojun Wu,Xiaokun Li,Guang Liang
Protein tyrosine kinases (RTKs) modulate a wide range of pathophysiological events in several non-malignant disorders, including diabetic complications. To find new targets driving the development of diabetic cardiomyopathy (DCM), we profiled an RTKs phosphorylation array in diabetic mouse hearts and identified increased phosphorylated fibroblast growth factor receptor 1 (p-FGFR1) levels in cardiomyocytes, indicating that FGFR1 may contribute to the pathogenesis of DCM. Using primary cardiomyocytes and H9C2 cell lines, we discovered that high-concentration glucose (HG) transactivates FGFR1 kinase domain through toll-like receptor 4 (TLR4) and c-Src, independent of FGF ligands. Knocking down the levels of either TLR4 or c-Src prevents HG-activated FGFR1 in cardiomyocytes. RNA-sequencing analysis indicates that the elevated FGFR1 activity induces pro-inflammatory responses via MAPKs–NF κ B signaling pathway in HG-challenged cardiomyocytes, which further results in fibrosis and hypertrophy. We then generated cardiomyocyte-specific FGFR1 knockout mice and showed that a lack of FGFR1 in cardiomyocytes prevents diabetes-induced cardiac inflammation and preserves cardiac function in mice. Pharmacological inhibition of FGFR1 by a selective inhibitor, AZD4547, also prevents cardiac inflammation, fibrosis, and dysfunction in both type 1 and type 2 diabetic mice. These studies have identified FGFR1 as a new player in driving DCM and support further testing of FGFR1 inhibitors for possible cardioprotective benefits.
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CHEMOSPHERE
·
2024
·
IF 8.1
Mu Li
The release of organic dyes, such as Rhodamine B (RhB), into industrial wastewater has led to significant issues with color pollution in aquatic environments. Herein, we prepared a cobalt nanoparticles (NPs)-based catalyst with the nitrogen-doped carbon-support (Co@N–C) for effective PMS activation. The Co@N–C/PMS system demonstrated the excellent catalytic activity of Co@N–C for activating PMS, achieving nearly 100% degradation of RhB. Singlet oxygen ( 1 O 2 ) and sulfate radicals (SO 4 • - ) were dominant reactive oxygen species for RhB degradation. Density functional theory (DFT) calculations substantiated that the production of 1 O 2 commenced with the initial generation of *OH through hydrogen abstraction from PMS, culminating in the direct release of oxygen to form 1 O 2 (PMS→*OH→O*→ 1 O 2 ). The generation of SO 4 • - was attributed to electron transfer to PMS from the surface of Co NPs (Co 0 →Co 2+ →Co 3+ ) and the C–N shell (Co 2+ →Co 3+ ). The research findings provided new insights into the development of Co-based heterogeneous catalysis for advanced oxidation of refractory organic pollutants in wastewater treatment.
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JOURNAL OF ORGANIC CHEMISTRY
·
2025
·
IF 3.6
Haiyang Wang,Fujun Li,Wenbo Yang,Yuchao Wang,Alexander A. Miskevich,Valery A. Loiko,Lijing Zhang,Shengyang Tao
The mechanistic understanding of how alkylamines impact Ni-metallophotoredox C–N coupling to form diarylamines remains unclear. In this study, 12-alkylamines were evaluated as additives to determine their effects on the synthesis of diarylamines in a flow photochemical system. Notably, n-hexylamine demonstrated the most significant promotional effect. Spectroscopic studies and experimental data reveal n-hexylamine substitutes DABCO as a Ni catalyst ligand, enhancing yields particularly in sterically hindered arylamines.
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ACS Nano
·
2024
·
IF 15.8
Quan Yuan,Liwei Yan,Jinfeng Tian,Weiyi Ding,Zhengguang Heng,Mei Liang,Yang Chen,Huawei Zou
Conventional carbon fiber felt-reinforced aerogel composites are often used as lightweight thermal protection systems (TPSs) for aerospace craft. However, due to their poor oxidation resistance, they have gradually failed to handle increasingly harsh thermal environments. In this work, a nanoscale composite coating interface of SiC-ZrC ceramic precursor is first constructed on the fiber surface. Subsequently, using the coated fiber felt as a three-dimensional skeleton and through polymerization-induced phase separation, an aerogel composite with excellent thermal protection in extreme thermal environments is prepared. Owing to the in situ ceramization of this nanoscale interface at ultrahigh temperatures, the back temperature of the 12 mm thick aerogel is only 147 °C after exposure to an oxyacetylene flame at 1950 °C for 70 s. Meanwhile, the central region of the aerogel recedes by only 7%. Not only does this work provide a way to enhance aerogels by constructing a self-ceramizable nanoscale interface it is also expected that the developed aerogel composite can be applied in the ultrahigh-temperature thermal protection of future aerospace craft.
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