Small
·
2026
·
IF 12.1
Jinghui Zhang,Aming Xie,Weijin Li,Wei Dong,Ruru Gao
Traditional carbon-based electromagnetic wave absorbers suffer from limited tunability due to the intricate coupling of multiple synthesis parameters, hindering the rational design of high-performance materials. Herein, we apply a genetic algorithm (GA) to optimize electromagnetic wave absorption (EWA) performance in Metal/C Nanocomposites. Over three generations of GA evolution, five key synthesis parameters—carbon precursor type, metal type, molar ratio of carbon precursor to metal ions, carbonization temperature, and filler loading ratio (wt.%)—are simultaneously tuned. Progressive optimization enhances the Enhanced Absorption Band (EAB) from an initial average of 1.24 to 4.08 GHz, while the minimal reflection loss (RL min ) improves from −20.29 to −41.9 dB. The champion sample achieves a remarkable RL min of −25.9 dB at 7.04 GHz with an EAB of 7.56 GHz. Random Forest and XGBoost models further quantify parameter importance, consistently identifying carbon precursor type (32.5% and 31.4%) and filler loading ratio (33% and 38.4%) as the dominant factors—validating the GA-driven optimization pathway. This work demonstrates the potential of evolutionary algorithms in materials design and provides a transferable framework for high-performance EWA materials.
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DOI
PubMed
高影响因子
Frontiers in Chemistry
·
2021
·
IF 5.221
Lu Guolong,Ye Chunnuan,Li Wenyan,He Xuedong,Chen Guang,Li Jun,Jin Huile,Wang Shun,Wang Jichang
This study is dedicated to expand the family of lithium-tellurium sulfide batteries, which have been recognized as a promising choice for future energy storage systems. Herein, a novel electrochemical method has been applied to engineer micro-nano TexSy material, and it is found that TexSy phases combined with multi-walled carbon nanotubes endow the as-constructed lithium-ion batteries excellent cycling stability and high rate performance. In the process of material synthesis, the sulfur was successfully embedded into the tellurium matrix, which improved the overall capacity performance. TexSy was characterized and verified as a micro-nano-structured material with less Te and more S. Compared with the original pure Te particles, the capacity is greatly improved, and the volume expansion change is effectively inhibited. After the assembly of Li-TexSy battery, the stable electrical contact and rapid transport capacity of lithium ions, as well as significant electrochemical performance are verified.
研究领域:
材料科学
·
电化学
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DOI
高影响因子
Russian Journal of Physical Chemistry A
·
2021
·Vol. 95
·期 12
·2471-2477
·
IF 0.691
Li Yongtao,Wang Dehao,Liu Liqing,Liu Yuzhou,Shi Chenyong,Zhang Hongguang,He Xuemin,Ma Yanwen
Abstract Carbon-coated SiO 2 hollow nanospheres with different thickness of carbon layers have been synthesized using PAA as template and phenolic resin as carbon source. The hollow structure provides space for the bulk expansion of SiO 2 when it works in lithium ion batteries. The carbon layer on the surface of SiO 2 hollow nanosphere significantly inhibits the bulk expansion of SiO 2 and improves the lithium ion transfer rate. By comparing silica materials coated with carbon layers of different thicknesses, it was found that HSiO 2 @C-2 used as anode material in lithium-ion batteries exhibited the best electrochemical performance. It achieves a reversible capacity of 748.1 mA h g –1 after 250 cycles and shows excellent rate capability and excellent cycling stability. This is attributed to the improved diffusion conditions of lithium ions due to the suitable thickness of carbon layer, which effectively increases the electronic conductivity of the anode material.
研究领域:
材料科学
·
能源科学
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DOI
高影响因子
ACS Applied Energy Materials
·
2021
·
IF 6.024
Weiwei Liu,Jing Liu,Menghua Zhu,Wenyu Wang,Yongming Sun
The fast-charging capability of lithium-ion batteries (LIBs) is becoming more important than before to meet the increasing requirements in practical applications. Because of safe working potential (above 1 V) and moderately high specific capacity, titanium niobium oxide (TiNb2O7, TNO) shows great potential as a fast-charging anode. Herein, a TNO-C assembly consisting of active initial TNO nanoparticles with conformal carbon coating is fabricated. The small size of TNO nanoparticles provides a short diffusion distance for lithium ions, and surficial carbon layers enable good electronic conductivity within the entire assembly. Moreover, the compact structure within the TNO assembly and efficient space packing of spheroidal secondary particles are beneficial for close packing, leading to an overall short distance for electron transport and ion diffusion. As expected, the as-designed TNO-C electrode delivers a high capacity of 194 mAh g–1 under 10C, and 71% of capacity was achieved under 0.2C. Moreover, the TNO-C electrode shows stable cycling performance with capacity retention of 92.2% after 100 cycles under 2C. In addition, by pairing with a lithium nickel–cobalt manganate (LiNi0.6Co0.2Mn0.2O2, NCM) cathode, the full cell exhibits a high capacity of 140 mAh g–1 under 3C and a high capacity retention of 97.4% after 100 cycles. The rational design of a TNO-C assembly makes it an excellent anode candidate for fast-charging LIBs.
研究领域:
材料科学
·
电化学
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能源存储
·
纳米科技
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固态化学
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电池技术
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DOI
高影响因子
Green Energy & Environment
·
2022
·
IF 12.781
Guoshen Yang,Gangrui Qu,Chi Fang,Jie Deng,Xianqi Xu,Yinghao Xie,Tian Sun,Yachao Zhu,Jiaxin Zheng,Hang Zhou
The recent advances in aqueous magnesium-ion hybrid supercapacitor (MHSC) have attracted great attention as it brings together the benefits of high energy density, high power density, and synchronously addresses cost and safety issues. However, the freeze of aqueous electrolytes discourages aqueous MHSC from operating at low-temperature conditions. Here, a low-concentration aqueous solution of 4 mol L −1 Mg(ClO 4 ) 2 is devised for its low freezing point (−67 °C) and ultra-high ionic conductivity (3.37 mS cm −1 at −50 °C). Both physical characterizations and computational simulations revealed that the Mg(ClO 4 ) 2 can effectively disrupt the original hydrogen bond network among water molecules via transmuting the electrolyte structure, thus yielding a low freezing point. Thus, the Mg(ClO 4 ) 2 electrolytes endue aqueous MHSC with a wider temperature operation range (−50 °C–25 °C) and a higher energy density of 103.9 Wh kg −1 at 3.68 kW kg −1 over commonly used magnesium salts (i.e., MgSO 4 and Mg(NO 3 ) 2 ) electrolytes. Furthermore, a quasi-solid-state MHSC based on polyacrylamide-based hydrogel electrolyte holds superior low-temperature performance, excellent flexibility, and high safety. This work pioneers a convenient, cheap, and eco-friendly tactic to procure low-temperature aqueous magnesium-ion energy storage device.
研究领域:
电化学
·
能源存储
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材料科学
·
超级电容器
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DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2026
·
IF 5.2
Ala'a Mhmoued Abdllh Alboull,Yu Zheng,Saman Hosseinkhani,Mohamed Ibrahim Halawa,Altaf Hussain,Jiyang Liu,Guobao Xu
Zn–BBPY–MOG was synthesized via simple ambient self-assembly. • Zn–BBPY–MOG served as a self-luminescent ECL platform. • Zn–BBPY–MOG/S₂O₈ 2− achieved 81.5% relative ECL efficiency. • Cyt c was detected with a low LOD of 0.025 nM. Electrochemiluminescence (ECL) sensing has emerged as a powerful analytical technique for biomolecule detection. Cytochrome c (Cyt c), an important biomarker associated with cellular damage and various diseases, has attracted considerable attention in bioanalytical research. Herein, we report a zinc-based metal-organic gel (Zn-BBPY-MOG) as a self-luminescent ECL platform for the sensitive detection of Cyt c. Zn-BBPY-MOG was synthesized under ambient conditions via coordination between Zn 2+ ions and the π-conjugated ligand 2,6-bis(2-benzimidazolyl)pyridine (BBPY). The resulting gel network, featuring strong coordination interactions and an extended π-conjugation, facilitates efficient electron transfer and enables intense ECL emission in the presence of S₂O₈ 2− as a coreactant. Compared with the standard Ru(bpy)₃ 2+ /S₂O₈ 2− reference system, Zn-BBPY-MOG/S₂O₈ 2− achieved a relative ECL efficiency of 81.5%, demonstrating its efficient ECL performance. Based on the quenching effect of Cyt c on the Zn-BBPY-MOG/S₂O₈ 2− ECL system, a sensitive and quantitative detection strategy was established. The developed sensing platform exhibited a wide linear detection range from 1 to 1000 nM and an ultralow detection limit of 0.025 nM for Cyt c. Moreover, the proposed method was successfully applied to the determination of Cyt c in serum samples, achieving satisfactory recoveries ranging from 99.20% to 102.50%. These results demonstrate the reliability and practical applicability of the Zn-BBPY-MOG-based ECL platform for sensitive biomolecular analysis. Download: Download high-res image (87KB) Download: Download full-size image
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产品关联
DOI
高影响因子
Space: Science & Technology
·
2026
·
IF 6.4
Chenmin Liu,Mingke Wu,Wenkai Shao,Chenlong Duan,Honglun Yang,Zongxu Yao,Tianqi Xu,Ruilin Li,Liang Dong
C-type asteroids are key targets for In-Situ Resource Utilization (ISRU) in thebackground of space mining. As a component of ISRU, space mineral processing playsa crucial role by cutting transportation costs while facilitating subsequent resourceextraction. However, relevant studies are hindered by limited asteroid samples andpoorly constrained physical parameters of asteroid regolith. To address this gap, thisstudy presents a novel methodology for preparing a high-fidelity asteroid regolithsimulant (ARS) using a synthetic process which mimics the formation history of C-typeasteroids. A C-type Asteroid Regolith Simulant (namely CARS-1) has been developedbased on compositional data from Ryugu samples returned by the Hayabusa2 mission.Characterization results reveal the proposed simulant displays a close agreement inelemental composition, bulk density, porosity, particle size distribution, and spectralreflectance. Based on testing results of the CARS-1, we further estimate the compressivestrength of Ryugu rocks to be around 40 MPa and the angle of repose of Ryugu regolithparticles to be 30-36°. The Ryugu regolith may exhibit moderately weak magnetizationscaling inversely with temperature. Finally, the feasibility of applying in-situ mineralprocessing technology on the surface of C-type asteroids is assessed, and severalrecommended processing strategies are proposed. This study has shed new light on thepreparation of high-fidelity ARSs and provided reliable testing materials for thedevelopment of space mineral processing
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DOI
高影响因子
ACS Catalysis
·
2026
·
IF 13.6
Zhaohui Chen,Weiping Yang,Yanmei Zheng,Siyu Yao,Yan Qing,Fan Dong,Markus Antonietti,Zupeng Chen
The direct photocatalytic conversion of alkylnitriles through C≡N bond cleavage to alkanes and alkenes is a model case for challenging triple bond activation and could expand the toolbox of chemistry. Herein, we report the visible-light-driven photochemical complete reduction of the C≡N bond of acetonitrile into ethene/ethane and ammonia using a composite photocatalyst consisting of Cd0.6Zn0.4S and ZIF-67. The optimal photocatalyst shows the highest C≡N bond cleavage efficiency, with a formation rate of 422.2/206.1 μmol g–1 h–1 for the final reduction product (ethene/ethane). This is 463/229 times that of pure Cd0.6Zn0.4S. Isotopic-labeling experiments and liquid in situ attenuated total reflection infrared absorption spectra (ATR-IRAS) results confirm the cleavage mechanism of the C≡N bond via the nitrile hydrogenation-nitrile breaking process. Integrated photoelectric characterization and density functional theory (DFT) calculations attribute the high performance to the facilitated charge separation and a reduced energy barrier for hydrogenation in the composite photocatalyst. This study not only presents an innovative approach for acetonitrile conversion under mild reaction conditions but also provides a promising example for breaking C≡N bonds for photocatalytic cleaning of organic nitrile wastes.
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产品关联
DOI
高影响因子
Microstructures
·
2026
·Vol. 6
·期 4
·N
·
IF 8.5
Ding Zhou\u003Csup\u003E1,2\u003C\u002Fsup\u003E,Ruimin Shi\u003Csup\u003E3\u003C\u002Fsup\u003E,Chen Li\u003Csup\u003E2\u003C\u002Fsup\u003E,Anping Wang\u003Csup\u003E2\u003C\u002Fsup\u003E,Yu Gao\u003Csup\u003E2\u003C\u002Fsup\u003E,Qiang Wu\u003Csup\u003E4\u003C\u002Fsup\u003E,Qikui Man\u003Csup\u003E2\u003C\u002Fsup\u003E,Baogen Shen\u003Csup\u003E2\u003C\u002Fsup\u003E
The development of highly efficient microwave absorbers presents a significant challenge, driven by the growing issue of severe electromagnetic pollution. In this context, precise structural design emerges as a decisive factor for enhancing the microwave absorption capabilities. In this work, the hollow Ni0.5Zn0.5Fe2O4/C/Ni microspheres were fabricated through hydrothermal method, calcination treatment and further annealing. The results of the morphology observation demonstrate that the heterogeneous Ni0.5Zn0.5Fe2O4/C/Ni composites are hollow microspheres, consisting of many nanoparticles. Strikingly, the appearance of metallic Ni alongside increased carbon graphitization results from the partial reduction of Ni2+ by carbon during high-temperature annealing in the Ar atmosphere, which can be beneficial to the dielectric loss. The hollow Ni0.5Zn0.5Fe2O4/C/Ni microspheres possess outstanding microwave absorption capabilities, mainly owning to the better interface and dipole polarization, eddy current loss, conduction loss and natural resonance loss, multiply reflection and scattering between the microspheres. The hollow Ni0.5Zn0.5Fe2O4/C/Ni microspheres annealed at 700 °C exhibited an optimal reflection loss (RL) value of -35.79 dB at 2.5 mm and an effective absorption bandwidth (EAB) of 5.29 GHz at 2.0 mm. The present study reveals a design approach for heterostructures, which offers novel insights into the fabrication of high-performance microwave absorbing materials.
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DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2026
·
IF 2.6
Zefan Liu,Xuejiao Rong,Jianchao Ma,Yin Xiao,Lin Shuo Jiang,Yang Li,Xilong Yan,Ligong Chen,Bowei Wang
The development of M-N-C catalysts (M = Fe, Co, Ni, etc.) was hindered by poor distribution of metal species and large particle size. In this work, alkaline additives were introduced during the precursor synthesis stage to regulate the distribution of metal components. Through hydrothermal and pyrolysis methods, Co-N-C catalysts (Co-N-C-NH3, Co-N-CO3, and Co-N-C-OH) were synthesized by using folic acid as the carbon and nitrogen source, cobalt chloride as metal salt, and ammonia solution, sodium carbonate solution, and sodium hydroxide solution as alkaline additives, respectively. The influence of different alkaline additives on the morphology, composition, and structure of Co-N-C catalysts was systematically analyzed through systematic characterization methods. The results indicated that the Co-N-CO3 catalyst prepared using sodium carbonate solution has a largest specific surface area, smallest and most evenly distributed Co nanoparticles. Moreover, the catalytic activity of the prepared Co-N-C catalyst in the hydrogenation of nitrobenzene was evaluated, and the influence of alkaline additives on its catalytic performance was further explored. Among them, the Co-N-CO3 catalyst achieved the best in the hydrogenation of nitrobenzene after reacting at 110 °C and under 1 MPa hydrogen for 3 hours, with a nitrobenzene conversion rate of over 99%. Comparative experiments confirmed that Co nanoparticles and Co-Nx sites constituted the active centers of the catalytic reaction. This strategy provides theoretical support and practical basis for optimizing the performance of Co-N-C catalyst.
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DOI
高影响因子
Scientific Reports
·
2022
·Vol. 12
·期 1
·1-8
·
IF 4.996
Weng Yue,Su Chun-Jen,Jiang Haoyang,Chiang Chien-Wei
Site-selectively chemical bioconjugation of peptides and proteins can improve the therapeutic exploration of modified protein drugs. Only 3.8% natural abundance of phenylalanine in protein and nearly 90% of proteins contain at least one phenylalanine residue in their sequenced, showing the potential in biopharmaceutical utility of the phenylalanine bioconjugation. However, the covalent bioconjugation of native phenylalanine is one of the most challenging problems in protein modification. Herein, an approach to protein modification is described that relies on a photoredox method for the site-selective bioconjugation of phenylalanine. This methodology has been validated on peptides as well as protein insulin using a straightforward and mild condition. In addition, based on characterization by near-UV CD spectroscopy and small angle X-ray scattering (SAXS), this pyrazole labeling approach permitted the insulin hexamer to completely dissociate into the monomeric form, thus making it a potential candidate for use as rapid-acting insulin for the treatment of diabetes.
研究领域:
生物化学
·
药物化学
·
分子生物学
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DOI
高影响因子
CATALYSIS COMMUNICATIONS
·
2023
·
IF 3.7
Hao Li,Huimin Liu,Chiliu Cai,Haiyong Wang,Youwang Huang,Song Li,Bin Yang,Chenguang Wang,Yuhe Liao,Longlong Ma
Nowadays, 2-methylfuran is urgently needed especially in pharmaceutical manufacture. However, the direct synthesis of 2-methylfuran via the efficient dehydration and hydrogenation of xylose usually requires a multistep reaction. Herein, a route of tandem conversion xylose to 2-methylfuran was developed. The xylose was firstly converted into furfural by Hβ zeolite, followed by the catalysis of furfural to 2-methylfuran over 0.5NiCu/C. Compared with two-step reaction, cascade strategy applied xylose conversion improved the 2-methylfuran yield rate by 41.5%. In general, this work expanded the application of tandem method for the enhancement of xylose effective conversion and provided a new biomass utilization technology.
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）