COMPOSITES PART B-ENGINEERING
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2025
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IF 14.2
Chunmiao Liu,Yurun Feng,Haibin Sun,Qiangqiang Hu,Hui Xiao,Xue Guo,Huaiqing Zhang
The increasingly complex electromagnetic environment and escalating stealth technology requirements pose unprecedented challenges to multifunctional electromagnetic wave (EMW) absorbing materials. While significant progress has been made, existing SiBCN material systems still struggle to simultaneously achieve broadband absorption and strong attenuation. In response to this demand, we propose a Fe-Co-Ni ternary co-doping strategy from the perspective of multiple doping and magnetic medium coupling. By precisely controlling the content of magnetic elements, the synergistic effect between magnetic loss and dielectric loss is realized. The experimental results show that the minimum reflection loss (RL min ) of the optimized SiBCN/Fe-Co-Ni fibers reach -53.19 dB, and a broadband absorption of 5.36 GHz is achieved at a thickness of 1.98 mm. More importantly, the material maintains excellent stealth performance across a wide range of incident angles. Capitalizing on these outstanding properties, we have successfully designed a low radar cross-section (RCS) stealth antenna. The antenna exhibits a 27.5 dBsm RCS reduction at 9.24 GHz. This work not only clarifies the synergistic mechanism of multiple magnetic doping to regulate electromagnetic parameters, but also provides new ideas for the development of new generation of smart stealth materials and devices.
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JOURNAL OF ENVIRONMENTAL RADIOACTIVITY
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2024
·
IF 1.9
Xiaoyu Yin,Yufan Zhao,Peng Guo,Peng Wu,Chao Chen,Aiming Zhang,Jiali Liao,Yuanyou Yang,Ning Liu,Tu Lan
The presence of carbonates or humic substances (HS) will significantly affect the species and chemical behavior of U(VI) in solution, but lacking systematic exploration of the coupling effect of carbonates and HS under near real environmental conditions at present. Herein, the sorption behavior of U(VI) on illite was systematically studied in the co-existence of carbonates and HS including both humic acid (HA) and fulvic acid (FA) by batch technique. The distribution coefficients ( K d ) increased as function of time and temperature but decreased with increasing concentrations of initial U(VI), Ca 2+ , and Mg 2+ , as well as ion strength . At pH 2.0–10.5, the K d values first increased rapidly and then decreased visibly, with its maximum value appearing at pH 5.0, owning to the changes in the interaction between illite and the dominant species of U(VI) from electrostatic attraction to electrostatic repulsion. The sorption was a heterogeneous, spontaneous, and endothermic chemical process, which could be well described by pseudo-second-order kinetic and Flory-Huggins isotherm models. When carbonates and HA/FA coexisted, the K d values always increased first and then decreased as a function of pH, with the only difference for HA and FA being the key pH (pH key ) at which the promoting and inhibiting effects on the sorption of U(VI) onto illite undergo a transition. The carbonates and HS have a synergistic inhibitory effect on the U(VI) sorption onto illite at pH 7.8. FTIR and XPS spectra demonstrated that the hydroxyl groups on the illite surface and in the HS were involved in U(VI) sorption on illite in the presence of carbonates. These results provide valuable data for a deeper understanding of U(VI) migration in geological media.
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Molecular Catalysis
·
2024
·
IF 3.9
Pengcheng Wang,Qingqing Jiang,XingYu Li,Xuedong Wang,Juncheng Hu
Generally, researchers focus on the regulation of metal sites rather than surrounding nonmetals in photothermal CO 2 hydrogenation reaction. Herein, concerning the role of non-metallic N species, a series of Co/NC-T catalysts have been fabricated via high-temperature pyrolysis of Zeolitic Imidazolate Frameworks-67. The CO 2 conversion rate shows a consistent tendency with the ratio of graphitized-N species while the product selectivity is closely related to the coordination state of Co-N x species. Co/NC-800 catalyst achieves high CO 2 conversion rate of 758 mmol g cat -1 h -1 with CH 4 selectivity of 99.6 %. After adding extra graphitized-N species, the CO 2 conversion rate could further enhance to 80.2 % for N-Co/NC-2. The role of N species in photothermal CO 2 hydrogenation reaction has been investigated in details, providing new insights for the design of metal organic frameworks derived metal/N-doped carbon catalysts.
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Food Chemistry-X
·
2024
·
IF 6.5
Qingguan Liu,Li Tan,Pengzhi Hong,Huanming Liu,Chunxia Zhou
The development of binary protein systems featuring superior nutritional properties and applied range is an interesting and challenging task in the food industry. In this study, the tilapia-soybean protein co-precipitates (TSPCs) with different mass ratios of tilapia meat and soybean meal were constructed. Results of physicochemical properties showed that the highest solubility and thermal stability values of TSPCs were 81.90 % and 90.30 °C, respectively. TSPCs have the full complement of amino acids and enhanced nutritional quality compared to tilapia protein isolate (TPI) and soybean protein isolate (SPI). TSPC 2:1 and TSPC 1:1 contained the highest levels of tryptophan, aspartic acid, glycine, histidine, and arginine relative to TPI and SPI. The in vitro protein digestibility and protein digestibility corrected amino acid scores of TSPCs were also higher than that of SPI. SDS-PAGE revealed that TSPCs contained protein subunits from TPI and SPI. Moreover, the lysine-to-arginine ratio and β subunit were greatly correlated with protein digestibility with correlation coefficients of −0.962 ( P < 0.01) and −0.971 ( P < 0.01), respectively. Compared to SPI, TSPCs displayed a lower lysine-to-arginine ratio and β-conglycinin content, which improved its digestibility. Proteomic analysis indicated that TSPC 1:1 had 989 unique proteins, which gives TSPCs enhanced biological properties compared to TPI and SPI, allowing them to participate in a broad range of biochemical metabolic and signal transduction pathways. The study would advance the utilization of mixed proteins toward exceptional food industry applications.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
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IF 5.8
Jihai Zhao,Qi Wang,Yaowen Wang,Xinbo Li,Chang Liu,Taotao Huang,Liping Li,Guangshe Li
The spin state of transition metal ions, specifically controlled by the electrons in antibonding orbital, is recognized as a descriptor for heterogeneous catalysts. However, the influence of spin state on the adsorption of CO molecular with two electrons in the highest occupied molecular orbital, has been overlooked. In this work, the Co 2+ spin states in multicomponent rock-salt oxides are regulated by increasing configurational entropy, demonstrating the impact of Co 2+ spin states on CO adsorption. The CO catalytic oxidation activity of as-synthesized rock-salt oxides exhibits a volcano-shaped relationship with the ratio of Co 2+ in high spin state to Co 2+ in low spin state. Mg 0.33 Co 0.33 Ni 0.33 O with this spin state ratio of 7.5 has the largest negative adsorption energy to CO molecular and exhibits the best catalytic activity. The findings on the relationship between the spin state of transition metal ions and reactant adsorption can contribute to the understanding of catalytic activity at the electronic level.
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CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Penggang Li,Ping Zhang,Aishu Li,Lin Yu,Mengying Si,Qi Liao,Zhihui Yang,Weichun Yang
Understanding the formation of uranyl-arsenate compounds (M(UO 2 ) 2 (AsO 4 ) 2 ·nH 2 O, M represents divalent metallic cations) is of great importance in controlling the mobility and fate of uranium (U) and arsenic (As) in the natural environment. Phosphate is a ubiquitous coexisting ion with properties similar to arsenate and can complex with uranyl to form uranyl phosphate compounds, thus potentially affecting the formation of uranyl-arsenate compounds. Herein, the effect of phosphate, on the immobilization of uranyl, arsenate and divalent metallic cations (e.g., Fe 2+ , Mg 2+ , Ni 2+ , Cu 2+ ) was explored. Surprisingly, the presence of phosphate promoted the immobilization of uranyl arsenate with the divalent metallic cations under acidic conditions. For example, at pH 3.0, the immobilization efficiency of uranyl and arsenate in the uranyl-arsenate-Fe 2+ system increased from 20.6 % and 18.6 % to 82.6 % and 52.2 %, respectively. Moreover, the chemical stability of the formed uranyl arsenate-bearing compounds in the presence of phosphate is significantly improved, and the TCLP leachability of As and U decreased by 81 % and 97 %, respectively. The experimental results illustrated that with PO 4 3- served as a proton acceptor, uranyl and arsenate species were changed and more metallic cations participate in immobilization. Gibbs free energy and Gibbs free energies change also illustrated that the formation of Fe(UO 2 ) 2 (AsO 4 ) 2 ·5H 2 O was relatively thermodynamically favorable in the presence of phosphate. The results of thermodynamic calculations could account for the enhancement effects of phosphate on immobilization of uranyl arsenate. The findings have important implications for the mobility and fate of U and As and the solution of their co-contamination, especially in acidic environments.
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Nanoscale
·
2024
·Vol. 16
·期 10
·5215-5221
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IF 5.8
Yangdong Zhou,Junda Chen,Zhiyin Huang,Yuqin Peng,Lixin Xing,Chunmei Tang,Ning Wang,Ling Meng,Mingjie Wu,Lei Du,Siyu Ye
The cathodic oxygen reduction reaction (ORR) has been continuously attracting worldwide interest due to the increasing popularity of proton exchange membrane (PEM) fuel cells. So far, various Pt-group metal (PGM) or PGM-free catalysts have been developed to facilitate the ORR. However, there is still a gap to achieve the expected goals as proposed by the U.S. Department of Energy (DoE). Recently, PGM-free@PGM hybrid catalysts, such as the M/N/C@PtM catalyst, have achieved the milestones of oxygen reduction, as reviewed in our recent work. It is, nevertheless, still challenging to unravel the underlying structure–property relationships. Here, by applying different Pt/Co ratios, a series of Co/N/C@PtxCo catalysts are synthesized. Interestingly, the ORR activity and stability are not linear with the Pt content, but show a volcano-like curve with increased Pt usage. This relationship has been deeply unraveled to be closely related to the contents of pyrrolic N, pyridinic N, and graphitized carbon in catalysts. This work provides guidelines to rationally design the coupled PGM-free@PGM catalysts toward the ORR by appropriate surface engineering.
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Journal of Energy Chemistry
·
2024
·
IF 14
Wenpei Kang,Bingchen Zhang,Zhurui Wang,Zhengchunyu Zhang,Mang Niu,Xuguang An,Zhenkai Mou,Xiaoyu Fan,Xuqiang Hu,Baojuan Xi,Shenglin Xiong
Vanadium-based cathode materials are attractive for aqueous zinc-ion batteries (AZIBs) owing to the high capacity from their open frameworks and multiple valences. However, the cycle stability and rate capability are still restricted by the low electrical conductivity and trapped diffusion kinetics. Here, we propose an organic–inorganic co-intercalation strategy to regulate the structure of ammonium vanadate (NH 4 V 4 O 10 , NVO). The introduction of Al 3+ and polyaniline (PANI) induces the optimized layered structure and generation of urchin-like hierarchical construction (AP-NVO), based on heterogeneous nucleation and dissolution–recrystallization growth mechanism. Owing to these favorable features, the AP-NVO electrode delivers a desirable discharge capacity of 386 mA h g −1 at 1.0 A g −1 , high-rate capability of 263 mA h g −1 at 5.0 A g −1 and excellent cycling stability with 80.4% capacity retention over 2000 cycles at 5.0 A g −1 . Such satisfactory electrochemical performance is believed to result from the enhanced reaction kinetics provided by the stable layered structure and a high intercalation pseudo-capacitance reaction. These results could provide enlightening insights into the design of layered vanadium oxide cathode materials.
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Nanomaterials
·
2024
·Vol. 14
·期 10
·853
·
IF 4.4
Xiaohan Wang,Han Tian,Libo Zhu,Shujing Li,Xiangzhi Cui
The application of electrochemical hydrogen evolution reaction (HER) for renewable energy conversion contributes to the ultimate goal of a zero-carbon emission society. Metal phosphides have been considered as promising HER catalysts in the alkaline environment, which, unfortunately, is still limited owing to the weak adsorption of H* and easy dissolution during operation. Herein, a bimetallic NiCoP-2/NF phosphide is constructed on nickel foam (NF), requiring rather low overpotentials of 150 mV and 169 mV to meet the current densities of 500 and 1000 mA cm−2, respectively, and able to operate stably for 100 h without detectable activity decay. The excellent HER performance is obtained thanks to the synergetic catalytic effect between Ni and Co, among which Ni is introduced to enhance the intrinsic activity and Co increases the electrochemically active area. Meanwhile, the protection of the externally generated amorphous phosphorus oxide layer improves the stability of NiCoP/NF. An electrolyser using NiCoP-2/NF as both cathode and anode catalysts in an alkaline solution can produce hydrogen with low electric consumption (overpotential of 270 mV at 500 mA cm−2).
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JOURNAL OF DRUG DELIVERY SCIENCE AND TECHNOLOGY
·
2025
·
IF 4.9
Menglan Wang,Lewei Li,Lifang Tang,Zuowei Xiao,Hong Yang,Qian Luo,Shiyang Fu,Zehui Fan,Xiaojun Tao,Chunlian He,Xiong Wu
Chemoresistance remains a major barrier to the effective treatment of triple-negative breast cancer (TNBC). To enhance the targeting and chemosensitivity of paclitaxel (PTX) for TNBC treatment, we developed a dual-drug-loaded nanodelivery system (BBR@PTX NPs) using BI-PEG-PTX polymer as the carrier, with berberine (BBR) loaded at an optimal ratio (PTX:BBR =1:10) determined by synergistic toxicity assays. The BBR@PTX NPs in this study demonstrated loading efficiencies of 9.5% for PTX and 28.06% for BBR, with an average particle size of 130-150 nm and a uniform distribution. In in vitro cellular assays, BBR potentiates PTX, achieving synergistic anti-tumor efficacy. The BBR@PTX NP co-delivery system enhances bioavailability by evading macrophage phagocytosis and lysosomal capture. The ability to inhibit cell growth, metastasis, and induce apoptosis was significantly enhanced after the NPs were taken up by tumor cells. In vivo experiments demonstrated that the BBR@PTX NP nanomicellar system enhanced tumor targeting, anti-tumor activity, and biosafety compared to single-agent formulations. These findings establish an effective approach to develop high-performance, selective, and low-toxicity nanocellular aggregates for combined therapy of solid triple-negative breast cancer.
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Nature Communications
·
2024
·Vol. 15
·期 1
·1-10
·
IF 14.7
Cui Fangyan,Li Jingzhen,Lai Chen,Li Changzhan,Sun Chunhao,Du Kai,Wang Jinshu,Li Hongyi,Huang Aoming,Peng Shengjie,Hu Yuxiang
Conventionally, rocking-chair batteries capacity primarily depends on cation shuttling. However, intrinsically high-charge-density metal-ions, such as Al 3+ , inevitably cause strong Coulombic ion-lattice interactions, resulting in low practical energy density and inferior long-term stability towards rechargeable aluminium batteries (RABs). Herein, we introduce tunable quantum confinement effects and tailor a family of anion/cation co-(de)intercalation superlattice cathodes, achieving high-voltage anion charge compensation, with extra-capacity, in RABs. The optimized superlattice cathode with adjustable van der Waals not only enables facile traditional cation (de)intercalation, but also activates O 2– compensation with an extra anion reaction. Furthermore, the constructed cathode delivers high energy-density (466 Wh kg –1 at 107 W kg −1 ) and one of the best cycle stability (225 mAh g –1 over 3000 cycles at 2.0 A g –1 ) in RABs. Overall, the anion-involving redox mechanism overcomes the bottlenecks of conventional electrodes, thereby heralding a promising advance in energy-storage-systems.
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PHYTOMEDICINE
·
2025
·
IF 8.3
Xiaoyu Tao,Yifei Gao,Zhengsen Jin,Shan Lu,Zhiqi Li,Siyu Guo,Qiqi Fan,Jiaqi Li,Chuanqi Qiao,Huiling Lei,Zhiqiang Zhang,Chongjun Zhao,Jiarui Wu
Background The combined therapeutic mechanisms of evodiamine (EVO) and berberine (BBR), which are the primary bioactive components contributing to the pharmacological effects of Euodiae Fructus and Rhizoma Coptidis , a classic herb pair used for colitis, have not yet been fully elucidated Purpose This study aimed to investigate the critical mechanisms by which co-administration EVO and BBR mitigated EVO-induced hepatotoxicity while exerting therapeutic effects against colitis. Methods Safety and therapeutic outcomes of EVO alone and combined BBR were validated in normal and colitis models. RNA-seq sequencing was performed on liver and colon tissues from different groups, while metagenomic sequencing was utilized to analysis fecal samples. An integrated bioinformatics analysis of transcriptomic and metagenomic data was conducted to reveal the mechanisms underlying EVO-induced hepatotoxicity and the protective and synergistic effects of BBR against colitis. Molecular biology experiments were employed to validate the regulatory mechanism, with a particular emphasis on the interactions within the gut- liver axis, including those related to lipid metabolism and inflammatory pathways. Results BBR attenuated EVO-induced hepatotoxicity in C57 mice by ameliorating pathological injuries and hepatic steatosis as well as inhibiting abnormal AST/ALT elevation, thereby revealing its hepatoprotective effects. In colitis mice, the combination therapy exhibited enhanced efficacy in reducing mucosal damage, restoring goblet cells populations, and suppressing pro-inflammatory cytokines production compared to monotherapy. Integrated analysis of RNA-seq combined with experimental validation revealed that EVO-induced hepatotoxicity was associated with the disrupted fatty acid β-oxidation and cholesterol synthesis homeostasis. Notably, co-administration of BBR effectively rescued metabolic disturbance through modulating core regulatory targets such as ACSL1, CPT1B, SQLE, DHCR7. Additionally, the combination treatment synergistically inhibited IL-17/NF-κB signaling, upregulated tight junction proteins, and rectified gut microbiota dysbiosis, thereby alleviating intestinal injury in colitis mice. Furthermore, ACSL3, a central regulator of fatty acid β-oxidation, was identified as a pivotal target through which the combination of EVO combined BBR suppressed lipid peroxidation-mediated activation of IL-17/NF-κB, leading to alleviate inflammation in LPS-induced NCM460 cell. Conclusion ACSL3 was identified as the critical therapeutic target through underlying the amelioration of fatty acid metabolism-mediated inflammatory injury in colitis by the combined administration of EVO and BBR, thereby offering a scientific foundation for precise and safe clinical drug administration.
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