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Spatial confinement of free-standing graphene sponge enables excellent stability of conversion-type Fe_(2)O_(3)anode for sodium storage

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Chinese Chemical Letters 2025年第3期36卷 544-549页

作者： Jun Dong Senyuan Tan Sunbin Yang Yalong Jiang Ruxing Wang Jian Ao Zilun Chen Chaohai Zhang Qinyou An Xiaoxing Zhang Hubei Key Laboratory for High-efficiency Utilization of Solar Energy and Operation Control of Energy Storage System Hubei University of TechnologyWuhan 430068China State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile UniversityWuhan 430200China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Nanjing University of Aeronautics and Astronautics Nanjing 210016China

Conversion-type anode materials are highly desirable for Na-ion batteries(NIBs)due to their high theoretical ***,the active materials undergo severe expansion and pulverization during the sodiation,resulting in inferior cycling ***,a self-supporting three-dimensional(3D)graphene sponge decorated with Fe_(2)O_(3)nanocubes(rGO@Fe_(2)O_(3))is ***,the 3D graphene sponge with resilience and high porosity benefits to accommodate the volume expansion of the Fe_(2)O_(3)nanocubes and facilitates the rapid electrons/ions transport,enabling spatial confinement to achieve outstanding ***,the free-standing rGO@Fe_(2)O_(3)can be directly used as an electrode without additional binders and conductive additives,which helps to obtain a higher energy *** on the total mass of the rGO@Fe_(2)O_(3)material,the rGO@Fe_(2)O_(3)anode presents a specific capacity of 859 mAh/g at 0.1 A/*** also delivers an impressive cycling performance(327 mAh/g after 2000 cycles at 1 A/g)and a superior rate capacity(162mAh/g at 20 A/g).The coin-type Na_(3)V_(2)(PO_(4))_(3)@C//rGO@Fe_(2)O_(3)NIB exhibits an energy density of 265.3Wh/*** unique 3D ionic/electronic conductive network may provide new strategies to design advanced conversion-type anode materials for high-performance NIBs.

关键词： Conversion-type anode Spatial confinement Fe_(2)O_(3) Graphene network Self-supporting Sodium-ion batteries

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Swarming Magnetic Fe_(3)O_(4)@Polydopamine-Tannic Acid Nanorobots:Integrating Antibiotic-Free Superficial Photothermal and Deep Chemical Strategies for Targeted Bacterial Elimination

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Research 2025年第1期2024卷 840-853页

作者： Luying Si Shuming Zhang Huiru Guo Wei Luo Yuqin Feng Xinkang Du Fangzhi Mou Huiru Ma Jianguo Guan State Key Laboratory of Advanced Technology for Materials Synthesis and Processing International School of Materials Science and EngineeringWuhan University of TechnologyWuhanChina Wuhan Institute of Photochemistry and Technology WuhanChina School of Chemistry Chemical Engineering and Life ScienceWuhan University of TechnologyWuhanChina

Micro/nanorobots(MNRs)are envisioned to provide revolutionary changes to therapies for infectious diseases as they can deliver various antibacterial agents or energies to many hard-to-reach infection ***,existing MNRs face substantial challenges in addressing complex infections that progress from superficial to deep ***,we develop swarming magnetic Fe3O4@polydopamine-tannic acid nanorobots(Fe3O4@PDA-TA NRs)capable of performing targeted bacteria elimination in complicated bacterial infections by integrating superficial photothermal and deep chemical *** Fe3O4@PDA-TA nanoparticles(NPs),serving as building blocks of the nanorobots,are fabricated by in situ polymerization of dopamine followed by TA *** driven by alternating magnetic fields,Fe3O4@PDA-TA NPs can assemble into large energetic microswarms continuously flowing forward with tunable ***,the swarming Fe3O4@PDA-TA NRs can be navigated to achieve rapid broad coverage of a targeted superficial area from a distance and rapidly eradicate bacteria residing there upon exposure to near-infrared(NIR)light due to their efficient photothermal ***,they can concentrate at deep infection sites by traversing through confined,narrow,and tortuous passages,exerting sustained antibacterial action through their surface TA-induced easy cell adhesion and subsequent membrane ***,the swarming Fe3O4@PDA-TA NRs show great potential for addressing complex superficial-to-deep *** study may inspire the development of future therapeutic microsystems for various diseases with multifunction synergies,task flexibility,and high efficiency.

关键词： therapies infectious diseases complex infections chemical therapy magnetic nanoparticles polydopamine photothermal therapy targeted bacteria elimination tannic acid

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Facile synthesis of hybridized Co/Fe-ZIF under solvent-free conditions for efficient oxidation evolution reaction electrocatalysis

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Nano Research 2025年第1期18卷 362-372页

作者： YinSheng Xu Zihan Li Zhonghan Cheng Somboon Chaemchuen State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Department of Chemical Engineering Faculty of EngineeringMahidol UniversityNakhon Pathom 73170Thailand State Key Laboratory of Silicate Materials for Architectures Wuhan University of TechnologyWuhan 430070China School of Materials Science and Engineering Wuhan University of TechnologyWuhan 430070China

Developing non-noble catalyst synthesis under green conditions with efficient electrochemical reactions is a challenging task in green energy *** meet this challenge,the synthesis of hybridized non-noble cobalt and iron in the zeolitic-imidazole framework(Co/Fe-ZIF)through a solid-state thermal(SST)method is *** the obtained Co/Fe-ZIF structure,iron atoms are uniformly dispersed and randomly hybridized with primary cobalt atoms and imidazole linker,similar to the structure of *** hybridized Co/Fe-ZIF shows potential as an electrocatalyst for oxidation evolution reaction(OER).The optimal iron-incorporating catalyst,Co/Fe_(0.2)-ZIF,demonstrates remarkable performance with a minimized overpotential of 285 mV at the current density(j)of 10 mA·cm^(-2)in 1 M *** synergistic effect of iron and cobalt ions on the catalyst provides active sites that bind to intermediate(OOH^(*))more strongly and facilitate high electron charge transfer,enhancing efficient ***,the synergistic Co/Fe_(0.2-)ZIF catalyst demonstrates excellent durable reaction time compared to non-iron catalyst(ZIF-67)and conventional catalyst(RuO_(2)).

关键词： zeolitic-imidazole frameworks solid-state thermal method solvent-free synthesis electrocatalyst oxidation evolution reaction

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NiSe nanoparticles anchored on hollow carbon nanofibers with enhanced rate capability and prolonged cycling durability for sodium-ion batteries

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Rare Metals 2025年第1期44卷 185-194页

作者： Li-Jun Xu Xue-Jie Wang Guo-Yu Tang Bi-Cheng Zhu Jia-Guo Yu Liu-Yang Zhang Tao Liu Faculty of Materials Science and Chemistry China University of GeosciencesWuhan 430078China School of Chemistry and Physics Queensland University of TechnologyBrisbaneQLD 4000Australia State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China

Nickel selenides have been studied as potential anode materials for sodium-ion batteries due to their high theoretical ***,the low electrical conductivity and the large volumetric variation during the charging/discharging process greatly reduce the specific capacity and cycling lifespan of the *** this paper,a simple strategy to fabricate NiSe nanoparticles enclosed in carbon hollow nanofibers(NiSe/C@CNF)is proposed,involving the preparation of Ni-precursor nanofibers by electrospinning,the coating of polydopamine and the formation of NiSe/C@CNF by calcination and *** combination of NiSe nanoparticles and porous carbon hollow nanofibers creates a strong conductive environment,which enhances the dynamic ability of sodium-ion transport and improves charge storage *** fabricated NiSe/C@CNF material exhibits excellent *** demonstrates a high rate capability,with specific capacities of 406.8 and 300.1 mAh·g^(-1)at 0.1 and 5.0 A·g^(-1),*** results highlight the potential of NiSe/C@CNF as an anode material for sodium-ion batteries,offering a large capacity and long life.

关键词： Nickel selenide Hollow porous structure Sodium storage Anode material

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Ionic liquids-assisted in-situ targeted defect-healing strategy for high-performance sprayed perovskite modules

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Journal of Energy Chemistry 2025年第5期104卷 756-764页

作者： Jize Wang Xinxin Yu Cong Geng Wangnan Li Ying Liang Bin Li Yong Peng Yi-Bing Cheng State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070HubeiChina Hubei Key Laboratory of Low Dimensional Optoelectronic Materials and Devices Hubei University of Arts and ScienceXiangyang 441053HubeiChina Hubei Longzhong Laboratory Wuhan University of Technology(Xiangyang Demonstration Zone)Xiangyang 441000HubeiChina

In the process of spraying coating perovskite films,the"coffee ring"effect(CRE)leads to the problem of excessive organic ammonium salt accumulation in local areas that cannot be completely *** introduce an in-situ targeted defect-healing strategy by incorporating butylamine formate(BAFa)ionic liquid into the spray *** liquids,due to their long carbon chain structure,tend to target flow towards the CRE region during the droplet evaporation *** coordination between the lone pair electrons in the C=O group of BAFa and Pb^(2+)effectively reduces defects in perovskite and suppresses non-radiative recombination ***,amine ligands,which are repelled to the film surface and grain boundaries,form a thin insulating monolayer in the CRE areas,forcing charge carriers to transport through areas of the perovskite with fewer *** approach enables the crystallization control and defect-heal over the Cs_(0.19)FA_(0.81)PbI_(3-x-y)Br_(x)Cl_(y)perovskite ***,the champion perovskite solar cell achieved a power conversion efficiency of 22.04%,while mini-modules with an effective area of 64.8 cm^(2)reached a peak power conversion efficiency of 18.35%,demonstrating the significant potential for commercializing large-area perovskite solar cells.

关键词： Ion liquid Spray-coating Perovskite solar cell "Coffee-ring"effect Targeted defect-healing

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First-Principles Calculation of Electronic Structure and Optical Properties of F-Doped Diamond

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Journal of Electronic materials 2025年 1-9页

作者： Yin, Jianbo Zhang, Wenjing State Key Laboratory of Advanced Processing and Recycling of Non–ferrous Metals Lanzhou University of Technology Lanzhou730050 China School of Material Science and Engineering Lanzhou University of Technology Lanzhou730050 China

Diamond is renowned for its excellent physical and chemical properties and is regarded as a wide-bandgap semiconductor material. However, the excessive width of its intrinsic bandgap, which is 5.47 eV, severely hinders its extensive application in the field of electronic devices. Based on the first-principles theory, this paper uses the CASTEP module to conduct meticulous and systematic calculations on the electronic structures and optical properties of fluorine-doped diamonds at different concentrations. The comprehensive calculation results vividly show that, in terms of electrical properties, the introduction of fluorine atoms triggers the formation of an intermediate impurity band in the diamond lattice, which facilitates electron transition and leads to the formation of F–C covalent bonds. In terms of optical properties, this change significantly enhances the light absorption capacity of diamond in the visible light range, effectively overcoming the poor absorption properties of undoped diamonds in this wavelength range. Among the different doping ratios studied, diamond with an F:C doping ratio of 1:31 exhibits the best performance. © The Minerals, Metals & materials Society 2025.

关键词： Semiconducting diamonds

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Controllable preparation of Eu3+-doped octacalcium phosphate and fluorescence study of its hydrolysis into hydroxyapatite

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CrystEngComm 2025年第20期27卷 3302-3309页

作者： Zhou, Heng Chen, Jia Tan, Xinyu Wei, Xuanhe Han, Yingchao State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Biomedical Materials and Engineering Research Center of Hubei Province Wuhan University of Technology Wuhan430070 China

Octacalcium phosphate (OCP) is generally considered the intermediate of hydroxyapatite (HAP) during bone mineralization. Crystalline phase transformation of OCP to HAP is an important topic in the study of biomineralization processes. In this study, Eu3+-doped OCP (Eu-OCP) was synthesized controllably by an improved co-precipitation method. The results showed that Eu-OCP had different fluorescence properties (i.e. emission intensity and I614/I591 ratio) due to the varied crystal field environment compared with Eu3+-doped HAP. Furthermore, the relationship between the I614/I591 ratio and the mass ratio of HAP to OCP in a HAP/OCP mixture was revealed based on a Eu3+ fluorescent probe, which was verified by X-ray diffraction (XRD) analysis. The I614/I591 ratio was related to the content (x) of HAP in the HAP/OCP mixture according to I614/I591 = 2.0971 − 0.70246/(1 + exp(x − 0.68956)/0.11274) (R2 = 0.970). By this fluorescent probe method, the crystal phase transition from OCP to HAP was quantitatively analyzed during the hydrolysis of OCP, which was in accordance with the XRD analysis. Therefore, this fluorescent probe method has potential to monitor crystal phase transition in biomineralization in situ. © 2025 The Royal Society of Chemistry.

关键词： Hydrolysis

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NaTiOx-modified high-nickel layered oxide cathode for stable sodium-ion batteries

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Carbon Energy 2025年第1期7卷 283-291页

作者： Yingcong Liu Xing Zhou Dongwei He Xiaowei Liu Chao Yang Dawei Xu Meilong Wang Ruitao Sun Bin Zhang Jingjing Xie Jin Han Wen Chen Ya You State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Yibin Libode New Materials Co.Ltd SichuanChina International School of Materials Science and Engineering School of Materials Science and MicroelectronicsWuhan University of TechnologyWuhan 430070China

The O3-type layered cathode with high Ni content has attracted much attention because of its high capacity and simple synthesis ***,surface side reaction and O3-P3 phase transitions would occur during Na+insertion/extraction,resulting in unsatisfying electrochemical ***,O3-Na[Ni_(0.6)Co_(0.2)Mn_(0.2)]O_(2)(NNCM622)cathode is modified by a NaTiOx coating layer in a wet chemistry method,which reduces the parasitic reaction and facilitates Na+***,the partially doped Ti improves structural stability by restraining the irreversible multiple-phase *** a result,the modified NNCM622 cathode obtains a high specific capacity of 143.4 mAh g^(−1)and an improved capacity retention of 69%after 300 *** work offers new prospects for stabilizing the NNCM622 cathode with a feasible coating strategy.

关键词： cathode high-nickel layered oxides sodium-ion battery surface modification

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Continuous production of Cl-terminated MXenes by bubbling chemical vapor growth in molten salt

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materials Today 2025年 86卷 1-9页

作者： Zhang, Jikai Tao, Yi Ye, Yuxuan Wang, Haiyang Wu, Xinping Luo, Zicheng Shi, Yu Zhao, Qi Cheng, Zongju Guo, Yu Li, Bin Mai, Bo An, Qinyou Zhang, Xiansheng Du, Zhiguo Yang, Shubin School of Materials Science and Engineering Beihang University Beijing100191 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China College of Textiles and Clothing Qingdao University Qingdao266071 China

Although 2D transition-metal carbides (MXenes) are usually synthesized by selective etching and chemical vapor deposition approaches, they are limited by the slow reaction kinetics, resulting in their continuous production challenging. Here, we demonstrate a bubbling chemical vapor growth (BCVG) method to continuously produce Cl-terminated MXenes by the reaction of CH4 and TiCl4 chemical bubbles with titanium powder in a molten salt. In the molten reaction system, titanium powder would effectively react with TiCl4 to form highly active [TiCl6]y– with low Ti[sbnd]Cl bond dissociation energies. The multivalent [TiCl6]y– could efficiently incorporate the carbon species from CH4 to form [Ti6CCl18] clusters on the surface of bubbles in a low energy barrier, efficiently promoting the reaction kinetics. Subsequently, Cl-terminated MXenes were produced based on the following condensation reaction of [Ti6CCl18] clusters. The resultant MXene (Ti2CClx) exhibits an expanded structure with strong interfacial polarization between its basal planes and the polymer matrix, delivering a good electromagnetic wave absorption performance with a minimum reflection loss (RLmin) value of –52.2 dB at a thin thickness of 2.84 mm. © 2025 Elsevier Ltd

关键词： Condensation reactions

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Fe doping 1T phase MoS_(2)with enhanced zinc-ion storage ability and durability for high-performance aqueous zinc-ion batteries

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Rare Metals 2025年第1期44卷 253-263页

作者： Jing-Yi Liu Rong-Jie Zhe Zhan-Hong Peng Yi-Hui Song Lin-Xuan Yang Chen Qing Jun-Ling Guo Jin-Ping Liu Yunnan Key Laboratory of Opto-Electronic Information Technology College of Physics and Electronic Information TechnologyYunnan Normal UniversityKunming 650000China Country State Center for International Cooperation on Designer Low-Carbon and Environmental Materials School of Materials Science and EngineeringZhengzhou UniversityZhengzhou 450001China School of Chemistry Chemical Engineering and Life ScienceState Key Laboratory of Advanced Technology for Materials Synthesis and ProcessingWuhan University of TechnologyWuhan 430070China

As a promising cathode material for aqueous zinc-ion batteries,1T-MoS_(2)has been extensively investigated because of its facile two-dimensional ion-diffusion channels and high electrical ***,the limited number of available Zn storage sites,i.e.,limited capacity,hinders its application because the inserted Zn^(2+),which form strong electrostatic interactions with 1T-MoS_(2),preventing subsequent Zn^(2+)***,the approach of enlarging the interlayer distance to reduce electrostatic interactions has been commonly used to enhance the capacity and reduce Zn^(2+)migration ***,an enlarged interlayer spacing can weaken the van der Waals force between 1T-MoS_(2)monolayers,easily disrupting the structural ***,to address this issue,an effective strategy based on Fe doping is proposed for 1T-MoS_(2)(Fe-1T-MoS_(2)).The theoretical calculations reveal that Fe doping can simultaneously moderate the rate of decrease in the adsorption energy after gradually increasing the number of stored atoms,and enhance the electron delocalization on metal-O ***,the experiment results show that Fe doping can simultaneously activate more Zn storage sites,thus enhancing the capacity,and stabilize the structural stability for improved cycling ***,Fe-1T-MoS_(2)exhibits a larger capacity(189 mAh·g^(-1)at 0.1 A·g^(-1))and superior cycling stability(78%capacity retention after 400 cycles at 2 A·g^(-1))than pure 1T-MoS_(2).This work may open up a new avenue for constructing high-performance MoS_(2)-based cathodes.

关键词： Aqueous zinc-ion battery 1T-MoS_(2) Fe doping More Zn storage sites Enhanced structural stability

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