CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Shanxin Li,Zhiqi Zhai,Yijing Sun,Sichen Guo,Ting Peng,Hongying Yu,Xuzhou Jiang
The development of stealth materials with both efficient corrosion resistance and low-frequency microwave absorption is highly necessary. In this work, neural-structured Co@C/MWCNTs nanocomposites were successfully synthesized through a facile co-precipitation method, followed by a subsequent pyrolysis process. By adjusting the pyrolysis temperature, the pore structure, crystallinity, degree of graphitization, and electromagnetic parameters of the material were optimized. This optimization achieved a multi-mechanism synergistic effect in the low-frequency region (C-band), including impedance matching, dielectric loss, conductive loss, and magnetic loss. The results indicated that NCN-700 achieved a minimum reflection loss ( RL min ) of −64.31 dB at 4.88 GHz. Additionally, the neural-structured Co@C/MWCNTs nanocomposites exhibited significant effectiveness in low-frequency radar stealth applications, while also displaying superior corrosion resistance, self-corrosion potential ( E corr = 0.52 V), and self-corrosion current density ( I corr = 2.58 × 10 −6 A/cm 2 ). These findings suggest the promising potential for neural-structured Co@C/MWCNTs nanocomposites in applications related to low-frequency microwave absorption and corrosion protection.
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高影响因子
Journal of Materials Chemistry A
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2025
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IF 9.5
Jiawen Hu,Linwen Jiang,Hang Liu,Jiawei Jin,Anhua Wu,Xiaofeng Zhang
High entropy alloys (HEAs) show great potential in electromagnetic-wave absorption (EMA), but impedance matching and environmental stability are still difficult problems to solve. Solid-solution strengthening is an effective means to enhance the performances of EMA materials. The multi-element co-penetrated FeCoCrMn HEAs are prepared using urea (CH4N2O) as the multi-element source by a green mechanochemical approach. The phase structure, magnetic properties, corrosion and oxidation resistance, and EMA properties of HEAs are investigated in detail. The results show that the crystal structure of HEAs is significantly altered by multi-element introduction. It is noteworthy that Ms is significantly enhanced on increasing the multi-element co-penetration level. The dielectric loss and magnetic loss of HEAs are significantly enhanced to optimize the impedance matching and attenuation properties, so as to achieve excellent EMA performances. Multi-element co-penetrated FeCoCrMn HEAs achieve a reflection loss (RL) of −59.6 dB at 6.06 GHz while achieving an ultra-wide effective absorption bandwidth (EAB) of 6.86 GHz at 1.32 mm. In addition, HEAs exhibit excellent corrosion resistance, indicating suitability in harsh environments. This study provides a new strategy for the design of highly effective EMA materials.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Jiwen Lin,Zhongyao Zhang,Jiaye Qiu,Yujie Wu,Jun Yu,Yongliang Li,Xiangzhong Ren,Lei Zhang,Zhongxin Song
Pt-based catalysts are widely used in hydrogen oxidation reaction (HOR) for the anode of proton exchange membrane fuel cells (PEMFCs). However, high Pt loading and CO poisoning increase the overall cost and stringent requirements for fuel purity. Here, decreasing Pt usage while achieving high anode performance by anchoring Ni single atoms under or adjacent to Pt nanoclusters is studied. The electron interaction between oxophilic Ni single atoms and Pt nanoclusters is beneficial for optimizing the electrocatalytic HOR. The Pt-Ni SA /CNT-2.6 (CNT-carbon nanotube) catalyst with 2.6 wt% low Pt loading shows superior catalytic activity for the HOR, long-time stability, and good CO-tolerant performance in the liquid half-cell and fuel cell of membrane electrode assembly (MEA). Theoretical calculations reveal that the synergy between single atoms and nanoclusters optimizes the d band of Pt and decreases the activation barrier for HOR and CO stripping, thereby enhancing HOR activity and high CO tolerance in PEMFC anodes with a low Pt loading. This work provides a novel design of electron interactions between single atoms and Pt nanoclusters, showing a significant advantage in promoting low-Pt PEMFCs with high power and CO tolerance.
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高影响因子
ELECTROCHIMICA ACTA
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2025
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IF 5.6
Meina Tan,Yang Qin,Jiaxin Luo,Yiping Wang,Fazhi Zhang,Xuhui Zhao,Xiaodong Lei
Aqueous hybrid-ion batteries (AHBs) offered various advantages, including low cost, high energy density, high operation voltage, safety, and durability. These characteristics made them an attractive choice for energy storage devices. CuS was a high-capacity cathode material for Al storage. However, the rate performance of CuS under high-voltages conditions was not satisfying. Here, we prepared Co-doped CuS (Co-CuS) nanosheet material with the small band gap by using the ball milling method as the cathode material of aqueous Cu-Al hybrid-ion battery. Co doping can improve the electron transport capacity and provide more active sites. At high current density, Co doping enhances the electrochemical kinetics, operating voltage and electrochemical performance of the materials. The battery exhibits a capacity of 175 mAh g -1 at 2000 mA g -1 and 108 mAh g -1 at 4000 mA g -1 . After 200 cycles of charge and discharge tests, a capacity of 93 mAh g -1 remains. This offers a valuable approach to the development of aqueous Cu-Al hybrid-ion battery electrode materials with good electrochemical performance under high operating voltage and high current conditions.
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高影响因子
CERAMICS INTERNATIONAL
·
2025
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IF 5.6
Jingxian He,Zhen Jiang,Yuan Liu,Zhenfeng Jing,Shuhui Sun,Haixia Zhang,Fengqing Zhang
This study successfully synthesized bismuth ferrite (BFO) thin films co-doped with europium (Eu) and aluminum (Al) using the sol-gel method, while comprehensively investigating their performance characteristics. By systematically adjusting the Al doping ratio in Bi 0.98 Eu 0.02 Fe1 -x Al x O 3 (with x = 0, 0.01, 0.03, 0.05, 0.07), significant changes in the material properties were observed. XRD and Raman spectroscopy validated the presence of R 3 c and Pnma phases in the synthesized BFO thin films, which demonstrated excellent crystallinity. Microstructural and compositional assessments, performed using SEM and XPS, indicated that the BEFAO5 sample possessed high crystallinity and a relatively low oxygen vacancy content. These characteristics enhanced the exceptional current-voltage (J-V) properties and ferroelectric behavior of BEFAO5. Additionally, the influence of vacancy defects on the ferroelectric efficiency and durability of BFO ferrite thin films was examined. The results indicated that the co-doping approach significantly improved the material's resistance to aging. In summary, the combined doping of Eu and Al not only substantially modified the crystalline structure and physical attributes of BFO thin films but also markedly enhanced their potential for applications in energy storage and spintronic technologies.
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高影响因子
EUROPEAN POLYMER JOURNAL
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2025
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IF 6.3
Huiying Zuo,Kaibin Chen,Hong Zhai,Jiao Dong,Daping Quan,Jing Zhou,Ying Bai
Self-assembly of block copolymers (BCPs) in selective solvents often provides promising routes for fabrication of morphologically rich microcarriers. Herein, a sort of lamellar platelet-like structure has been obtained through co-assembly of amphiphilic diblock polycarbonates and certain species of small molecules. The diblock copolymer consisted of a hydrophobic segment with pendent cholesterol groups and a hydrophilic block decorated with branched polyethylenimine groups, synthesized by sequential ring-opening polymerization. Planar drug molecules (such as curcumin, coumarin, and steroids) served as the nuclei that facilitated crystallization of hydrophobic block of copolymer chains with pendent cholesterol groups. Such small-molecule-mediated crystallization can force the copolymer chains to be fully stretched and packed in an orderly fashion, inducing the co-assembly of the diblock polycarbonate and cargo molecules, rather than the BCP self-assembly driven by solvent-philic/solvent-phobic interaction. The thickness of the co-assembled platelet was highly dependent on the chain length (degree of polymerization) of the copolymer, as well as the layer numbers of the stacking lamellae. Furthermore, such platelet-like co-assemblies effectively reduced the dosage-dependent cytotoxicity of curcumin. Overall, we herein propose a novel mechanism for small molecule induced macromolecular assembly and well-controlled morphological modulation through layer-by-layer stacking, which holds great potential for drug delivery in versatile biomedical applications.
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高影响因子
ACS Applied Materials & Interfaces
·
2025
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IF 8.2
Mengcheng Tang,Lingfeng Pan,Hairui Deng,Xianan Li,Weili Yang,Jian Ge,Han Zhang,Yao Li,Ruibo Zhao,Shibo Wang,Xiangdong Kong
Photothermal therapy (PTT) based on a second near-infrared (NIR-II, 1000–1700 nm) light source holds great promise in the field of tumor treatment. However, hyperthermia-induced heat shock protein (HSP) expression and limited therapeutic efficacy remain the major challenges for PTT. Herein, a NIR-II laser-responsive nanocapsule PC/AC@GR@HA (abbreviated as P/A@G@H) was designed for carbon oxide (CO)-assisted tumor PTT combined with thermodynamic therapy (TDT). P/A@G@H was constructed by loading the CO storage polymer mPEG(CO) (PC) along with the free radical initiator 4,4′-azobis(4-cyanovaleric acid) (AC) into a gold hollow nanorod (GR), followed by the surface coating of hyaluronic acid (HA). After accumulating in tumor tissue through the active targeting of HA, P/A@G@H can quickly cause local hyperthermia upon 1064 nm laser irradiation and lead to cell damage by GR-mediated PTT. Moreover, the loaded PC can react with in situ H2O2 to produce CO, which inhibits the PTT-induced HSP90 expression. This can effectively weaken the heat resistance of tumor cells and enhance the PTT effect. Additionally, as a thermally decomposable radical initiator, AC can turn to toxic free radicals to ablate tumor cells via TDT under hyperthermia. Our research demonstrates that the synergistic strategy combining CO-assistance and TDT can effectively augment the ultimate therapeutic outcome of PTT, and the integrated nanocapsule P/A@G@H could be a powerful weapon for tumor suppression based on NIR-II light.
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PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2020
·Vol. 55
·期 22
·9525-9537
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IF 3.553
Bai Ting,Zhu Bobo,Du Zhaoyi,Shi Junling,Shao Dongyan,Kong Jie
The combination therapy by using two or more chemotherapeutic agents with different action mechanisms has shown to be an attractive strategy for cancer treatment with synergistic therapeutic effects, and also the side effects reduction by one agent replacing part of another one. In this work, an amphiphilic star copolymer with an H40 hyperbranched polyester as the core and poly(ε-caprolactone)-poly(2-dimethylaminoethylmethacrylate) copolymer incorporated with the fluorescent DTM groups as the arms were designed to encapsulate the model anti-cancer drug, doxorubicin (DOX), and a novel potential agent, avasimibe (Ava). Those two drugs could inhibit DNA replication and block acyl-CoA cholesterol acyltransferase-1 (ACAT-1) to induce the cell apoptosis, respectively. The model drugs could be easily loaded into the micelles with a high total drug-loading content toward 24.6% by altering the feeding drug ratios. Three molar ratios (DOX:Ava = 3:1, 1:1, and 1:3) of the drug-loaded micelles were prepared and evaluated for in vitro antitumor efficacy. Results showed that the micelles with 1:1 ratio exhibited the best synergistic cytotoxic activity against both K562 and HeLa cells. Furthermore, the dual-drug combination with efficient anticancer performance was also confirmed by live/dead staining, apoptosis, and cell cycle analysis. Moreover, the internalization of these dual-drug-loaded micelles could be monitored by fluorescent DTM groups and DOX. All these results suggested that the addition of Ava could cut down the dose of DOX to reduce its potential side effects and the co-delivery system could be a promising approach for an effective combination chemotherapy.
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高影响因子
POLYMER DEGRADATION AND STABILITY
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2022
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IF 5.204
Qi Liu,Dong Feng,Wenbo Zhao,Delong Xie,Yi Mei
It is a challenge to prepare flame-retardant composites via addition of low content of fire retardant all the time. In this contribution, a compounding method based on combining long-chain phosphaphenanthrene (DPP) flame retardant and two dimensional (2D) black phosphorene (BP) is used to achieve molecule-scale dispersion of a Si-P flame retardant in poly(ethylene-co-vinyl acetate) (EVA) matrix (donated as EVA/DBP) by the interaction of intermolecular hydrogen bonds. By this way of doing, EVA/DBP composites with various flame retardant contents were investigated. Cone calorimeter, vertical combustion, thermo-gravimetric analysis, scanning electron microscope, Raman Spectrum, and Fourier transform infrared spectroscopy are used to evaluate the flame retardance and analyze the corresponding mechanisms. The results show that the DBP can effectively improve the flame retardant properties and thermal stability of EVA with slight influence on its mechanical performance. Compared with pure EVA resin, EVA/DBP composite with 5 wt% dosage of DBP achieves UL94-V0 rating, 9.6% increased in limiting oxygen index (LOI), 16.1% and 47.5% reduction in total heat release (THR) and peak heat release rate (PHRR), respectively. Moreover, the tensile yield stress and elongation at break are only reduced by 8.1% and 6.2%, respectively. It shows that the interaction between DBP and EVA effectively promote gas phase fire resistance.
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高影响因子
Journal of Materials Research and Technology-JMR&T
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2022
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IF 6.267
Zhi-Wen Zhang,Cui-Ying Lu,Guang-Hui Liu,Yuan-Jia Cao,Zhen Wang,Ting-ting Yang,Yu-Hong Kang,Xian-Yong Wei,Hong-Cun Bai
A green and effective nitrogen and nickel in-situ doping strategy was designed to prepare cellulose-based N/Ni co-doped porous carbon (PC). The co-hydrothermal pretreatment induced by hydrazine hydrate and nickel acetate effectively modifies the physico-chemical structure of PC and further improves its electrochemical performance. The efficient N-supply and unique heteroatom regulation performance of hydrazine hydrate is related to its strong reducibility. The specific surface area and total pore volume of the synthesized N 4 NiPC 220-3 are 1383.66 m 2 g −1 and 0.59 cm 3 g −1 , while the N and O contents are 1.35 and 10.41%, respectively. At current densities of 0.5 and 20 A g −1 , N 4 NiPC 220-3 exhibits a high specific capacitance of 415 F g −1 and a good capacitance retention of 72.22%, respectively. After 10,000 charge/discharge cycles, the retention rate is as high as 96.06%, confirming its excellent cycling stability. The two-electrode system test results further show that the energy density of N 4 NiPC 220-3 is as high as 35.6 W h kg −1 at a power density of 500.1 W kg −1 , while a high retention rate of 87.87% is still obtained after 10,000 cycles. This green and efficient synthesis method based on in-situ co-doping of hydrazine hydrate and nickel acetate is a promising alternative strategy for producing carbon-based supercapacitors.
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高影响因子
Inorganic Chemistry Frontiers
·
2023
·Vol. 10
·期 16
·4869-4880
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IF 7
Ruiting Zhang,Yahong Jin,Yanmei Li,Haoyi Wu,Yihua Hu
Inorganic photochromic materials hold great scientific and technological promise in the field of optical information storage due to their numerous advantages, including an extended color change duration, exceptional fatigue resistance, and robust thermal stability. However, their practical application has been hindered by relatively slow coloring and bleaching rates. In this study, we present a P-type photochromic perovskite material, LiTaO3:Bi3+/Sm3+, with an ultra-fast optical response. LiTaO3:Bi3+/Sm3+ exhibits a rapid coloring time of approximately 25 seconds and an ultra-fast bleaching time of approximately 1 second, achieved through alternating 254 nm and 365 nm light irradiation. Notably, the photobleaching rate of LiTaO3:Bi3+/Sm3+ is currently the fastest among all reported inorganic photochromic materials. The prepared LiTaO3:Bi3+/Sm3+ material exhibits a maximum color change contrast of 26.49% and excellent fatigue resistance. The codopant Bi3+ plays a critical role in creating traps within the host lattice, which greatly enhances photochromism contrast and enables efficient long afterglow luminescence. These dual properties make the material suitable for dual-mode optical information storage in both bright and dark fields. Finally, the excellent optical properties of LiTaO3:Bi3+/Sm3+ are demonstrated in its application for erasable optical information storage vividly.
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高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2021
·Vol. 32
·期 10
·13941-13947
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IF 2.478
Liu Ying,Cao Bo,Zhang Xu,Luo Rong,Luo Chunhua,Lin Hechun,Peng Hui
Layered Co(OH) 2 has been regarded as a potential candidate for pseudocapacitor electrode material, but it is limited by its poor conductivity and low surface area. Herein, carbonated multi-walled carbon nanotubes (MWCNTs-COOH) were used to improve the conductivity of α-Co(OH) 2 nanocomposites. α-Co(OH) 2 nanoflowers were successfully grown and tangled with MWCNTs-COOH to form a randomly oriented network structure mediated by ammonia using water-methanol as co-solvent at room temperature. The capacitance performances of the obtained α-Co(OH) 2 @MWCNT-COOH composites were investigated to find that MWCNT-COOH improved the specific capacitance efficiently. Especially, in the presence of 20% in mole of MWCNT-COOH, the composite gave rise to the high specific capacitance of 1027 F/g at the current density of 2 A/g with good cycle stability, whose specific capacitance remained 78% of its original even after 5000 cycles at 30 A/g current. The large surface area and strengthening the conductivity of the composites lead to the improvement of efficiency in charge/discharge process.
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高影响因子
危险品化学品经营许可证（带存储）