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Reducing obesity and inflammation in mice with organically-derivatized polyoxovanadate clusters

Chinese Chemical Letters 2023年第5期34卷 631-636页

作者： Kun Chen Guoyong Dai Shengqiu Liu Yongge Wei South China Advanced Institute for Soft Matter Science and Technology School of Emergent Soft MatterSouth China University of TechnologyGuangzhou 510641China Key Lab of Organic Optoelectronics&Molecular Engineering of Ministry of Education Department of ChemistryTsinghua UniversityBeijing 100084China Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices South China University of TechnologyGuangzhou 510641China State Key Laboratory of Natural and Biomimetic Drugs Peking UniversityBeijing 100191China

Obesity,characterized by the dysregulation of energy balance in adipose tissue and other metabolic organs,is frequently accompanied by chronic low-grade *** long-acting insulin sensitizers,the organically-derivatized polyoxovanadates(POVs),can extend the dosing interval of antidiabetic drugs from hourly to almost *** this work,the protective activity of POVs is investigated by an eight-week in vivo experiment,in which a small amount of POVs was administrated orally to a mouse model of dietinduced obesity every *** present study shows that administration of POVs significantly decreases the body weight of mice,reduces adipose tissue accumulation,and simultaneously reduces adipose tissue *** addition,the anti-obesogenic population of i NKT cells is protected potentially by POVs,which subsequently alleviates visceral adipose tissue inflammation in high-fat-diet(HFD)-fed mice against diet-induced *** contrast,the change in body weight after POV treatment is the result of a substantial reduction in fat mass,with no obvious effects on lean body *** findings demonstrate that supplementary of POVs would be an effective way to combat obesity and metabolic disorders while lowering metabolic inflammation.

关键词： Polyoxovanadates Diet-induced obesity Anti-obesity Anti-inflammation Metabolic disease

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Design of Quaternary Fesiconi Soft Magnetic Composites for Large-Power and High-Frequency Applications

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SSRN 2024年

作者： Chen, Qiming Wu, Chen Yan, Mi School of Materials Science and Engineering State Key Laboratory of Silicon and Advanced Semiconductor Materials Zhejiang University Hangzhou310058 China Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering Taiyuan030032 China

The growing trend of large power and high frequency in electromagnetic conversion applications urges advancements in the saturation magnetization (Ms), effective permeability (μe) and core loss (Pcv) of soft magnetic composites (SMCs). Such performance depends largely on the Ms and coercivity (Hc) of the magnetic alloys as the main component of the SMCs. It is however, difficult to simultaneously achieve large Ms and low Hc via binary and ternary alloy systems. Here, quaternary Fe81-xSi15Co4Nix (x = 0, 3, 6 at%) soft magnetic alloys have been designed with the effect of Ni addition on the microstructure and magnetic properties of the alloy revealed. On one hand, rational incorporation of Co and Ni maintains the relatively large Ms. On the other hand, the Ni enters into the A2 lattice and promotes its transition into DO3 ordered phase as confirmed by both experimental characterization and first-principles calculations. Such microstructural evolution gives rise to initially decreased magnetocrystalline anisotropy (K1) followed by increasing due to the competitive reduction effect of Ni addition and increment effect of DO3 formation. The magnetostriction constants (λs) increases monotonously from negative to positive values with raised Ni content. The reduced λs with appropriate Ni incorporation facilitate the formation of 180° domain wall structure as revealed by Lorentz microscopy. Combined lowest K1 and λs as well as optimized domain structure result in the lowest Hc for the Fe78Si15Co4Ni3 alloy. The corresponding SMCs exhibit excellent performance with the μe of 160.6 and the Pcv of 288.4 mW/cm3 (50 mT, 100 kHz) combined with high Ms of 177.3 emu/g, superior to other FeSi-based SMCs. © 2024, The Authors. All rights reserved.

关键词： Magnetic properties

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Ultrathin Electrolyte Film Integration of Multi-Phase Continuous Conduction Pathways for Constructing High-Energy-Density Lithium Metal Solid-State Batteries

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SSRN 2024年

作者： Zhao, Xiaoxue Wang, Chao Li, Yang Li, Dabing Fan, Li-Zhen Beijing Advanced Innovation Center for Materials Genome Engineering Beijing Key Laboratory for Advanced Energy Materials and Technologies University of Science and Technology Beijing Beijing100083 China

engineering composite solid-state electrolytes (SSEs) hold significant importance in enhancing the safety, energy density, and charging capabilities of future energy storage technologies. Nonetheless, the discontinuous ionic conduction and poor interface contact caused by the layer-by-layer stacking processes have limited the application and large-scale manufacturing of solid-state lithium metal batteries (SSLBs). Hence, we proposed a pioneering integrated SSE/cathode design for SSLBs, accomplished by electrospinning an ultrathin polymer-ceramic nanofiber-enhanced ultrathin solid-state electrolyte (LLZO-PAN SSE). The integrated structure facilitates tight interface, significantly enhancing continuous ion conduction and reducing interface resistance. The LLZO-PAN SSE simultaneously attains a delicate equilibrium in thickness (16 μm), rapid ion conduction (0.29 mS cm-1, RT), outstanding stabilization of lithium metal (>1500 h at 0.2 mA cm−2). The LiNi0.8Co0.1Mn0.1O2 (NCM811) pouch cells utilizing a practical configuration have 341.0 Wh kg-1 energy-density and safety performance. This work provides a new strategy for the manufacturing and utilization of high-energy-density SSLMBs. © 2024, The Authors. All rights reserved.

关键词： Solid-State Batteries

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WO_(3)@Fe_(2)O_(3) Core-Shell Heterojunction Photoanodes for Efficient Photoelectrochemical Water Splitting

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Chinese Journal of Structural Chemistry 2022年第8期41卷 25-30页

作者： Guobing Mao Heng Wu Tianyang Qiu Dingjie Bao Longjie Lai Wenguang Tu Qi Liu School of Materials Science and Engineering Anhui Polytechnic UniversityWuhuAnhui 241000China School of Mechanical Engineering Anhui Institute of Information TechnologyWuhuAnhui 241100China Key Laboratory of Modern Acoustics(MOE) Institute of AcousticsSchool of PhysicsEco-materials and Renewable Energy Research Center(ERERC)National Laboratory of Solid State MicrostructuresCollaborative Innovation Center of Advanced MicrostructuresJiangsu Key Laboratory for Nano Tech-nologyNanjing UniversityNanjing 210093China School of Science and Engineering The Chinese University of Hong KongShenzhenGuangdong 518172China

Photoelectrochemical(PEC) hydrogen production from water splitting is a green technology to convert solar energy into renewable hydrogen fuel. The construction of host/guest architecture in semiconductor photoanodes has been proven to be an effective strategy to improve solar-to-fuel conversion efficiency. In this study, WO_(3)@Fe_(2)O_(3) core-shell nanoarray heterojunction photoanodes are synthesized from the in-situ decomposition of WO_(3)@Prussian blue(WO_(3)@PB) and then used as host/guest photoanodes for photoelectrochemical water splitting, during which Fe_(2)O_(3) serves as guest material to absorb visible solar light and WO_(3) can act as host scaffolds to collect electrons at the contact. The prepared WO_(3)@Fe_(2)O_(3) shows the enhanced photocurrent density of 1.26 m A cm^(-2)(under visible light) at 1.23 V. vs RHE and a superior IPEC of 24.4% at 350 nm, which is higher than that of WO_(3)@PB and pure WO_(3)(0.43 m A/cm^(-2) and 16.3%, 0.18 m A/cm^(-2) and 11.5%) respectively, owing to the efficient light-harvesting from Fe_(2)O_(3) and the enhanced electron-hole pairs separation from the formation of type-Ⅱ heterojunctions, and the direct and ordered charge transport channels from the one-dimensional(1D) WO_(3) nanoarray nanostructures. Therefore, this work provides an alternative insight into the construction of sustainable and cost-effective photoanodes to enhance the efficiency of the solar-driven water splitting.

关键词： host/guest photoelectrodes WO_(3) a-Fe_(2)O_(3) core-shell nanostructures one-dimensional nanoarray

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Unveiling thermal properties and pump-out blocking in diamond/GaInSn composites as thermal interface materials

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Rare Metals 2023年第12期42卷 3969-3976页

作者： Shi-Jie Du Hong Guo Zhong-Nan Xie Jie Zhang Shu-Hui Huang Nan Wu Xu-Jun Mi Xin-Bo He Hui Yang Yu-Lin Liu State Key Laboratory of Nonferrous Metals and Processes China GRINM Group Co.LtdBeijing 100088China Institute for Advanced Materials and Technology University of Science and TechnologyBeijing 100083China GRIMAT Engineering Institute Co. LtdBeijing 101407China General Research Institute for Nonferrous Metals Beijing 100088China

Gallium-based liquid metal,as a high-performance thermal interface material,can improve the performance and service life of electronic *** study focuses on the use of diamond as a thermal conductivity enhancement phase to improve the thermal conductivity of GaInSn liquid metal and avoid the overflow of liquid metal during *** this study,diamond/GaInSn composites were prepared by an ultrasonic-assisted wetting *** thermal conductivity and contact thermal resistance of diamond/GaInSn composites were characterized by the transient *** morphology and thermal conductivity of diamond/GalnSn composites were investigated when diamond particles of different diameters were added to GaInSn liquid *** addition of large-sized diamond particles can effectively improve the thermal conductivity of thermal interface materials (TIMs) but willcause liquid metal to pump out.

关键词： composites thermal interface

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Insight into elemental diffusion in rafting of Ni-based superalloys by three-dimensional multicomponent phase field simulation

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materials Letters 2023年第1期341卷

作者： Hu, Yeyuan Feng, Qiushui Zhang, Yaqian Xia, Huxiang Sun, Jiayan Xu, Qingyan School of Materials Science and Engineering Tsinghua University Key Laboratory for Advanced Materials Processing Technology Ministry of Education Beijing100084 China

Elemental diffusion is the underlying mechanism in rafting during creep process of Ni-based single crystal superalloys. A three-dimensional elastoplastic multicomponent multiphase-field model is established to investigate γ' rafting morphology. The distribution and diffusion of elements will be discussed according to the simulation results. Finally the rafting process has been illustrated in an elemental diffusion view. © 2023

关键词： Creep

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Coupling Effect of Ni and Ta on the Antiphase Boundary Energy in Γ’ Phase of Coni-Based Superalloys

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SSRN 2025年

作者： Chen, Youheng Han, Jiajia Yang, Chen Pan, Shaobin Wang, Cuiping Liu, Xingjun College of Materials China Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials School of Materials Science Xiamen University Fujian Xiamen361005 China Xiamen Key Laboratory of High Performance Metals and Materials School of Materials Science Xiamen University Fujian Xiamen361005 China Department of Materials Science and Engineering Harbin Institute of Technology Guangdong Shenzhen518055 China

Anti-phase boundary (APB) significantly affects the yield strength and creep behavior of CoNi-based superalloys. Given the conflicting evidence regarding the effect of Ni on the APB energy (APBE) of the γ’ phase, we have conducted a comprehensive investigation using a combination of density functional theory, cluster expansion, and Monte Carlo simulation techniques. Our analysis of equilibrated configurations reveals that Ni plays a crucial role in preventing the formation of anti-site defects, thus enhancing the stability of the γ’ phase. Additionally, we identified short-range order phenomena within the γ’ phase, which further contribute to phase stability. Regarding the APBE, both Ni and Ta increase the APBE within a reasonable composition range. Moreover, the simultaneous addition of Ni and Ta further increases the APBE, demonstrating a synergistic effect. However, increasing the Ni concentration in certain CoNi-based superalloys leads to a reduction in Ta content, which in turn lowers the APBE. Our findings provide a clear understanding of the roles of Ni and Ta in determining the APBE and offer a foundation for manipulating the shear mechanism in γ’ phases. © 2025, The Authors. All rights reserved.

关键词： Density functional theory

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Operando-reconstructed polyatomic ion layers boost the activity and stability of industrial current–density water splitting

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science Bulletin 2024年第21期69卷 3384-3394页

作者： Yingxia Zhao Ying Wu Qunlei Wen Danji Huang Ruoou Yang Haozhi Wang Yingying Xu Ming Sun Youwen Liu Jiakun Fang Tianyou Zhai Lin Yu Guangdong Engineering Technology Research Center of Modern Fine Chemical Engineering School of Chemical Engineering and Light IndustryGuangdong University of TechnologyGuangzhou 510006China State Key Laboratory of Materials Processing and Die&Mould Technology and School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074China State Key Laboratory of Advanced Electromagnetic Engineering and Technology and School of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan 430074China Jieyang Branch of Chemistry and Chemical Engineering Guangdong Laboratory(Rongjiang Laboratory) Jieyang 515200China School of Chemistry and Chemical Engineering South China University of TechnologyGuangzhou 510641China Analysis and Test Center Guangdong University of Technology Guangdong University of TechnologyGuangzhou 510006China State Key Laboratory of Marine Resource Utilization in South China Se1 School of Materials Science and EngineeringHainan UniversityHaikou 570228China

Metal–organic frameworks have garnered attention as highly efﬁcient pre-electrocatalysts for the oxygen evolution reaction(OER).Current structure–activity relationships primarily rely on the assumption that the complete dissolution of organic ligands occurs during ***,modeling based on NiFe Prussian blue analogs(NiFe-PBAs)show that cyanide ligands leach from the matrix and subsequently oxidize to corresponding inorganic ions(ammonium and carbonate)that re-adsorb onto the surface of NiFe OOH during the OER ***,the surface-adsorbed inorganic ions induce the OER reaction of NiFe OOH to switch from the adsorbate evolution to the lattice-oxygen–mediated mechanism,thus contributing to the high *** addition,this reconstructed inorganic ion layer acting as a versatile protective layer can prevent the dissolution of metal sites to maintain contact between catalytic sites and reactive ions,thus breaking the activity–stability ***,our constructed NiFePBAs exhibit excellent durability for 1250 h with an ultralow overpotential of 253 mV at 100 mA cm*** scale-up NiFe-PBAs operated with a low energy consumption of4.18 kWh m3 H2 in industrial water electrolysis *** economic analysis of the entire life cycle demonstrates that this green hydrogen production is priced at US$2.59 kg^(-1)H_(2),meeting global targets(

关键词： Chemical recognition Oxygen evolution mechanism Industrial water electrolysis

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Efficient Construction of a Polyaniline-coated DNA Nanoparticle for Photothermal Therapy

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Chemical Research in Chinese Universities 2023年第6期39卷 884-890页

作者： AQIB Raja Muhammad YANG Changping WU Xiaohui WANG Yuang FAN Jing SHANG Yingxu LIU Jianbing DING Baoquan CAS Key Laboratory of Nanosystem and Hierarchical Fabrication National Center for NanoScience and TechnologyBeijing 100190P.R.China University of Chinese Academy of Sciences Beijing 100049P.R.China School of Materials Science and Engineering Henan Institute of Advanced TechnologyZhengzhou UniversityZhengzhou 450001P.R.China

Photothermal therapy is a direct and non-invasive therapeutic ***,we report a general strategy for the construction of polyaniline-coated DNA nanoparticles for efficient photothermal *** our design,two G4/hemin-based DNAzymes are precisely organized in a DNA template to mimic the function of horseradish peroxidase(HRP)for the catalytic oxidation of *** polymerization,the polyaniline-coated DNA nanoparticles(PANI/DNA NPs)can be efficiently obtained as the photothermal agent to elicit a pronounced photothermal *** cellular uptake,the noticeable photothermal effect from 808 nm laser irradiation can achieve an efficient proliferation inhibition of tumor *** rationally developed photothermal agent based on DNA template-assisted polymerization presents a new avenue for the development of photothermal therapy.

关键词： Nucleic acid nanostructure Self-assembly Polymeriza-tion Polyaniline Photothermal therapy

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Integrating thin wall into block:A new scanning strategy for laser powder bed fusion of dense tungsten

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Journal of materials science & Technology 2022年第25期120卷 167-171页

作者： Zhengang Xiong Ji Zou Zhaoyang Deng Jinhan Chen Wei Liu Yuchi Fan Minshi Wang Xiaoqing Zhao Chunfeng Yu Dongdong Dong Wenyou Ma Weimin Wang Zhengyi Fu State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Institute of New Materials Guangdong Academy of SciencesGuangzhou 510650China School of Materials Science and Engineering Tsinghua UniversityBeijing 100084China Institute of Functional Materials Donghua University201620China School of Metallurgy and Materials University of BirminghamBeijing 100084China

Due to a combination of outstanding properties including high melting point,high density,low thermal expansion coefficient,low saturated vapor pressure and excellent thermal conductivity,tungsten(W)parts have been widely used as electrodes,heating elements,anti-scatter grids for Computed Tomography(CT)equipment,rocket nozzles and divertor materials for nuclear fusion[1].

关键词： powder thermal saturated

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