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materials Today Catalysis 2025年 8卷

作者： Chen, Jian Huang, Yixin Wan, Liu Du, Cheng Zhang, Yan Xie, Mingjiang Hubei Key Laboratory for Processing and Application of Catalytic Materials Huanggang Normal University Huanggang438000 China

The development of CdS-based photocatalysts with the appropriate bandgap structure, impressive optical response, and long-lasting reusability is both crucial and challenging. The heterogeneous catalyst, made up of polytriazine and CdS, demonstrates exceptional photogenerated charge separation and transfer capabilities, as well as superior CO2 adsorption abilities. In this study, we have shown that the CO2 photoassisted reduction efficiency of CdS nanosheets can be significantly improved through surface modification with a polytriazine polymer coating. The PP@CdS photocatalyst has been thoroughly characterized using techniques such as XRD, TEM, SEM, N2 adsorption-desorption, CO2 adsorption, DRS, XPS, and photoelectric performance tests. The catalytic performance of the PP@CdS was assessed through photoassisted CO2 reduction reactions under visible light irradiation in an aqueous medium at 25 ℃. Owing to its enhanced CO2 adsorption capacity and the efficient separation and utilization of photogenerated electrons, the PP@CdS photocatalyst demonstrated a CO yield (6.7 μmol/g/h) 1.3 times greater and a CH4 yield (4.2 μmol/g/h) 1.3 times higher than that of bare CdS nanosheets. Furthermore, the PP@CdS photocatalyst demonstrated outstanding reusability in CO2 reduction reactions. This study presents a novel approach to enhancing the CO2 adsorption capacity and modulating the bandgap structure of polymer-coated semiconductor materials. © 2024 The Authors

关键词： Nanosheets

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Controlling the conductivity and microporosity of biocarbon to produce supercapacitors with battery-level energies at an ultrahigh power

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新型炭材料(中英文) 2025年第2期40卷 409-420页

作者： CHENG Bei XIE Xing-yan WAN Liu CHEN Jian ZHANG Yan DU Cheng GUO Xue-feng XIE Ming-jiang Hubei Key Laboratory for Processing and Application of Catalytic Materials Huanggang Normal UniversityHuanggang 438000China Key Lab of Mesoscopic Chemistry MOE School of Chemistry&Chemical EngineeringNanjing UniversityNanjing 210023China

In order to meet the demands of new-generation electric vehicles that require high power output(over 15 kW/kg),it is crucial to increase the energy density of car-bon-based supercapacitors to a level comparable to that of batteries,while maintaining a high power *** re-port a porous carbon material produced by immersing pop-lar wood(PW)sawdust in a solution of KOH and graphene oxide(GO),followed by *** resulting mater-ial has exceptional properties as an electrode for high-en-ergy *** to the material prepared by the direct carbonization of PW,its electrical conductivity was in-creased from 0.36 to 26.3 S/*** of this and a high microporosity of over 80%,which provides fast electron channels and a large ion storage surface,when used as the electrodes for a symmetric supercapacitor,it gave a high energy density of 27.9 Wh/kg@0.95 kW/kg in an aqueous electrolyte of 1.0 mol/L Na_(2)SO_(4).The device also had battery-level energy storage with maximum energy densities of 73.9 Wh/kg@2.0 kW/kg and 67.6 Wh/kg@40 kW/kg,an ultrahigh power density,in an organic electrolyte of 1.0 mol/L TEABF4/*** values are comparable to those of 30−45 Wh/kg for Pb-acid batteries and 30−55 Wh/kg for aqueous lithium *** work indicates a way to prepare carbon materials that can be used in supercapacit-ors with ultrahigh energy and power densities.

关键词： Reduced GO modification Loose wood Symmetric supercapacitor Battery-level energy density

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The role of γ/γ interfacial spacing on the tensile behavior in lamellar TiAl alloy via molecular dynamics simulations

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Acta Mechanica Sinica 2025年第2期41卷 1-6页

作者： Xiong Zhou Shiping Wang Zhongtao Lu Xiege Huang Xiaobin Feng Jiayi Fu Wenjuan Li Pengcheng Zhai Guodong Li Hubei Key Laboratory of Theory and Application of Advanced Materials Mechanics School of ScienceWuhan University of TechnologyWuhan 430070China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China

The lamellar microstructure is one of the most typical microstructures of TiAl *** are threeγ/γinterfaces with different microstructures in lamellarγ-TiAl *** this work,we investigated the deformation processes of lamellarγ-TiAl alloys with different interfacial spacing(λ)via uniaxial tensile loading using molecular dynamics simulations,including true twin(TT),pseudo-twin(PT),rotational boundary(RB),and the mixed structure(TT∥PT∥RB).The results show that in all lamellarγ-TiAl samples,the Shockley partial dislocation prefers to nucleate in the region between two neighboring ***,dislocations move towards,crossing theγ/γ***,the dislocation slippage leads to the destruction of the interface,resulting in cracks and structural *** the decrease ofλ,the ultimate strength slightly increases in the TT or PT structure ofγ-TiAl,which follows the Hall-Petch *** in general,the interfacial spacing has a slight effect on the ultimate strengths of these four structures ofγ-TiAl.

关键词： Lamellarγ-TiAl alloys γ/γinterface Ultimate strength Interfacial spacing

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基于织构工程优化的n型Ag2Se薄膜热电性能增强研究（英文）

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Science China materials 2025年第5期68卷 1630-1637页

作者：张新洋贺丹琪陈李莎黄同露叶先锋李浩天朱婉婷聂晓蕾余健张玉魏平赵文俞张清杰 State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Hubei Key Laboratory of Theory and Application of Advanced Materials Mechanics Wuhan University of Technology School of Materials Science and Engineering Jiujiang University Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory

柔性热电发电技术日益被认为是为可穿戴电子设备供电的有效解决方案.然而,n型柔性薄膜的性能局限性限制了其更广泛的应用.本研究通过织构工程技术获得了高性能n型Ag2Se薄膜,在300 K时,功率因子高达2.14 mW m-1K-2.我们采用简单的蒸发镀... 详细信息

柔性热电发电技术日益被认为是为可穿戴电子设备供电的有效解决方案.然而,n型柔性薄膜的性能局限性限制了其更广泛的应用.本研究通过织构工程技术获得了高性能n型Ag2Se薄膜,在300 K时,功率因子高达2.14 mW m-1K-2.我们采用简单的蒸发镀膜技术,结合前驱体调控策略,制备了（201）取向的n型Ag2Se薄膜.实验和理论分析均表明,这种择优取向的Ag2Se薄膜具有高迁移率和高Seebeck系数.此外,纳米孔和随机面内取向结构的引入,显著散射了不同波长声子,从而使Ag2Se热导率进一步降低.最终,在363 K时,Ag2Se薄膜ZT值高达0.73.本研究不仅提出了一种调控Ag2Se薄膜晶体取向的策略方法,还为开发高性能热电薄膜材料创造了新的前景.

关键词： Ag2Se film texture engineering preferred orientation electrical properties thermoelectric performance

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WS2 monolayer decorated with single-atom Pt for outstanding H2 adsorption and sensing: A DFT study

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International Journal of Hydrogen Energy 2025年

作者： Li, Tiantian Yin, Huan Yang, Shulin Lei, Gui Wang, Zhao Xu, Huoxi Gu, Haoshuang School of Physics and Electronic Information Hubei Key Laboratory for Processing and Application of Catalytic Materials Huanggang Normal University Huanggang438000 China Faculty of Physics and Electronic Sciences Hubei Key Laboratory of Ferro & Piezoelectric Materials and Devices Hubei University Wuhan430062 China

First-principles DFT calculations were conducted to explore the hydrogen adsorption/sensing capabilities of Pt-decorated WS2. The single-atom Pt exhibited a strong preference for binding to the W atom, with a binding energy of −6.34 eV and a high diffusion energy barrier of 1.10 eV. Molecular dynamics simulations and phonon dispersion curves validated the exceptional thermal stability of the Pt-decorated WS2 structure. Decoration with a single-atom Pt significantly enhanced H2 adsorption on the WS2 monolayer, increasing the adsorption energy to −1.31 eV and elongating the H–H bond length to 1.907 Å. This resulted in a charge transfer of 0.35 |e| between the adsorbed H2 and the Pt-decorated WS2, which in turn caused a 0.4 eV increase in the band gap of the decorated WS2. The Pt-decorated WS2 also exhibited a significant sensor response of 74.7 at 538 K and a rapid recovery time of 1.85 s. Furthermore, the higher charge transfer and sensor response suggested that the Pt-decorated WS2 has promising selectivity towards H2 compared to CO, H2S, NH3, or CH4. Therefore, the single-atom Pt-decorated WS2 monolayer emerges as a highly promising candidate for hydrogen sensing applications. © 2025 Hydrogen Energy Publications LLC

关键词： Monolayers

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Synergistic Driven Copper Cobalt Phosphide@Nickel Selenide as an Electrode Material for Asymmetric Supercapacitors

SSRN

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SSRN 2025年

作者： Wan, Liu Zhang, Yan Du, Cheng Xie, Mingjiang Chen, Jian Hubei Key Lab for Processing and Application of Catalytic Materials Hubei Provincial Engineering Research Center of High Purity Raw Material Processing Technology of Electronic Materials College of Chemistry and Chemical Engineering Huanggang Normal University Huanggang437000 China

Transition metal phosphides (TMPs) as electrode materials for supercapacitors (SCs) suffer from inferior structural stability and short cycle life, which has become a research focus area for energy storage. Here, we have proposed a rational construction of copper cobalt phosphide (CuCoP)@Ni3Se2 core-shell heterostructure by the process of hydrothermal treatment, phosphatization, and electrodeposition. The deposition of two-dimensional (2D) Ni3Se2 nanosheets on one-dimensional (1D) CuCoP nanoneedles creates numerous electroactive centers and modulates the interface structure, which favors efficient electron and ion transfer, and enhances the electrochemical behavior. The robust core-shell architecture contributes to relieving the volume changes and improving the structural stability. The CuCoP@Ni3Se2 electrode displays a mass/areal capacitance of 1480.8 F g-1 / 3.70 F cm-2 at 1 A g-1, together with exceptional long-term durability, which surpasses those of the pristine CuCoP and Ni3Se2 electrodes. Besides, the assembled asymmetric supercapacitor (ASC) illustrates a peak energy density of 62.2 Wh kg-1 / 0.45 Wh cm-2 and preserves 93.8% of its original capacitance over 25,000 cycles. The post-mortem characterizations of the CuCoP@Ni3Se2 electrodes after cycling tests confirmed the impressive cyclic stability. This investigation provides a viable strategy for designing electrode materials in the next-generation technologies of energy storage. © 2025, The Authors. All rights reserved.

关键词： Shells (structures)

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Damage characteristics of low-velocity impact of hybrid laminates made of thick- and thin-plies

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Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica 2025年第5期42卷 2595-2606页

作者： Zheng, Kaidong Chen, Hongda Cai, Wei Cao, Dongfeng Hu, Haixiao Li, Ruiqi Li, Shuxin National Energy Key Laboratory for New Hydrogen-ammonia Energy Technologies Foshan Xianhu Laboratory Foshan528200 China State Key Laboratory of Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China Hubei Key Laboratory of Theory and Application of Advanced Materials Mechanics Wuhan University of Technology Wuhan430070 China Institute of Advanced Materials and Manufacturing Technology Wuhan University of Technology Wuhan430070 China

The ply level hybridization design employs multiple thin layers instead of a single thick layer, resulting in an increased complexity of the interface. To investigate the hybrid effect between thick and thin plies of laminated composites subjected to low-velocity impact loading, two hybrid laminates were designed based on the quasi-isotropic stacking sequence. The low-velocity impact (LVI) tests including the baseline laminate and hybrid laminates were carried out. The ultrasonic C-scan and de-ply technology were respectively used to make a nondestructive and destructive detection on laminates with impact damages. Impact damages were qualitatively and quantitatively evaluated based on the detection results. Subsequently, the performances and failure modes of compression after impact (CAI) were analyzed. Experimental results show that hybrid design of thick- and thin- plies makes full use of the damage suppression characteristics of thin-ply composite, improves the impact damage resistance of composite structures, reduces the projected delamination area and total interface delamination area, shortens the distance between the largest single delamination and the neutral layer, and significantly improves the CAI strength of composite structures. The outputs of this experimental research serves as an indication for the optimal design and safety evaluation of hybrid structures. © 2025 Beijing University of Aeronautics and Astronautics (BUAA). All rights reserved.

关键词： Delamination

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Boosting oxygen evolution of LiCoO2 electrocatalysts via lithium defect

Materials Today Catalysis

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materials Today Catalysis 2025年 8卷

作者： Li, Huamei Li, Mengyuan Liao, Lingling Yang, Han Xiang, Kun Luo, Guoqiang Xie, Mingjiang School of Chemistry and Environmental Engineering Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of Education Wuhan Institute of Technology Wuhan430205 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China Hubei Key Lab for Processing and Application of Catalytic Materials College of Chemical Engineering Huanggang Normal University Huanggang438000 China

The challenge of the complex oxygen evolution reaction (OER) currently impedes the efficient production of hydrogen via electrolytic water splitting. To address this issue, the development and improvement of effective electrocatalysts are required. LiCoO2, a key material in lithium-ion batteries, has shown promising potential as an electrocatalyst for electrochemical energy conversion. However, OER catalysts derived from LiCoO2 have faced obstacles such as high overpotential and a complicated preparation process. In this study, the preparation method is adjusted to optimize the synthesis of Li1-xCoO2 with a defective structure, resulting in an impressive overpotential of only 290 mV at a current density of 100 mA cm−2 and a remarkable Tafel slope of 15.2 mV dec−1. The exceptional catalytic activity of Li1-xCoO2 can be attributed to the absence of Li, which triggers oxidative alterations in the electronic structure of Co. Density functional theory (DFT) calculations reveal that Li defects can influence the d-band center of active Co sites, enhancing the adsorption capabilities of Co sites towards *OOH intermediates and increasing the conductivity of the electrocatalyst during the OER process. These alterations improve the velocity of the crucial step in the reaction, ultimately boosting the catalyst's overall performance and efficiency. © 2024 The Authors

关键词： Lithium-ion batteries

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Enhanced Pyroelectric Response in Quenched BNT-Based Lead-Free Ferroelectrics for Uncooled Infrared Detection

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Advanced Functional materials 2025年

作者： Shen, Meng Zhang, Xian Cen, Fangjie Zhang, Qingfeng Zhang, Haibo Zhang, Guangzu Jiang, Shenglin Chen, Yong Hu, Yongming Yao, Kui Hubei Key Laboratory of Micro-Nanoelectronic Materials and Devices Key Laboratory of Intelligent Sensing System and Security of Ministry of Education and School of Microelectronics Hubei University Wuhan430062 China School of Integrated Circuits Engineering Research Center for Functional Ceramics MOE and Wuhan National Laboratory for Optoelectronics Huazhong University of Science and Technology Wuhan430074 China Ministry of Education Key Laboratory of Green Preparation and Application for Functional Materials Hubei Key Laboratory of Micro-Nanoelectronic Materials and Devices Hubei Key Laboratory of Polymer Materials School of Materials Science & Engineering Hubei University Wuhan430062 China School of Materials Science and Engineering State Key Laboratory of Material Processing and Die & Mould Technology Huazhong University of Science and Technology Wuhan430074 China Singapore138634 Singapore

Excellent pyroelectric performance in environmentally friendly lead-free ferroelectrics is highly demanded for uncooled infrared detector. However, the trade-off between room temperature pyroelectric coefficient (proom) and depolarization temperature (Td) remains a major challenge of lead-free ferroelectrics for their device applications. Herein, a superior proom of 13.8 × 10−4 C m−2 K−1 with high Td of 155 °C is achieved in quenched BNT-Fe/Mn-NBT sample. Oxygen vacancy engineering is proposed to solve the constraint between proom and Td in BNT-based ceramics. The local A/B site displacement and oxygen vacancies are constructed in the BNT-Fe/Mn-NBT perovskite structure by quenching treatment, resulting in larger lattice distortion and superior proom. Meanwhile, defect-induced inhomogeneous random field compensates the ferroelectric depolarization field and down-shifts the free energy well, maintaining high Td. The resulting pyroelectric infrared detector made from the high-performance quenched BNT-Fe/Mn-NBT generates the voltage responsivity of 5906 V W−1 and specific detection rate of 1.8 × 108 cm Hz1/2 W−1, which is comparable to the commercial RD-624 type PZT-based pyroelectric infrared detector. © 2025 Wiley-VCH GmbH.

关键词： Perovskite

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Kinetic and HPLC-MS analyses revealed the catalysis behavior of total saponins from MOF-based solid acids

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Journal of Molecular Liquids 2025年 429卷

作者： Zhang, YanXiao Gao, XiaoNing Xu, Juan Feng, Lu School of Chemistry and Environmental Engineering Key Laboratory of Green Chemical Engineering Process of Ministry of Education Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of Education State Key Laboratory of Green and Efficient Development of Phosphorus Resources Wuhan Institute of Technology Wuhan430073 China Hubei Key Laboratory of Processing and Application of Catalytic Materials Huanggang Normal University Huanggang438000 China Laboratory Department of Central Theater General Hospital of the Chinese People's Liberation Army Wuhan430000 China

Diosgenin is an influential intermediate for the preparation of various steroidal drugs, and has the reputation of "mother of hormones" and "medicinal gold". In this work, UiO-66-NH2 is quaternary ammoniated by functional modification of 3,5-diamino-1,2,4-triazole and then ion-exchanged with different concentrations of CF3SO3H to produce ionic liquids grafted MOF-based solid acids, namely UNS-0.96 and UNS-1.28, where 0.96 and 1.28 represent the volume (mL) of CF3SO3H consumed. They were used to extract diosgenin from total saponins, suggesting that UNS-1.28 can achieve high diosgenin extraction with a shorter time (2.5 h) and a lower addition amount (0.15 g) and the optimum diosgenin yield of 22.5 % was obtained. The extraction efficiency is higher than that obtained by hydrolysis of 2 M H2SO4 and commercial ion exchange resins. Kinetic studies have shown that the catalytic of total saponins by UNS-1.28 is in perfect agreement with the pseudo-first-order kinetic model, and that the activation energy required for extraction is low, only 2.83 × 104 J/mol. In addition, HPLC-MS was used to analyze the total saponins and products at different extraction times. The fragmentation peak types and relative abundances of the different extracted products are compared to reveal the cleavage pathways of the total saponins and the optimal period of diosgenin production, and to suggest the mechanism of action of the solid acid on the total saponins. © 2025 Elsevier B.V.

关键词： Kinetic parameters

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