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Recent advances in the nanoconfinement of Mg-related hydrogen storage materials:A minor review

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International Journal of Minerals,Metallurgy and materials 2023年第1期30卷 14-24页

作者： Jingjing Zhang Bing Zhang Xiubo Xie Cui Ni Chuanxin Hou Xueqin Sun Xiaoyang Yang Yuping Zhang Hideo Kimura Wei Du school of environmental and material engineering Yantai UniversityYantai 264005China

Hydrogen is an ideal clean energy because of its high calorific value and abundance of ***,storing hydrogen in a compact,inexpensive,and safe manner is the main restriction on the extensive utilization of hydrogen ***(Mg)-based hydrogen storage material is considered a reliable solid hydrogen storage material with the advantages of high hydrogen storage capacity(7.6wt%),good performance,and low ***,the high thermodynamic stability and slow kinetics of Mg-based hydrogen storage materials have to be *** this paper,we will review the recent advances in the nanoconfinement of Mg-related hydrogen storage materials by loading Mg particles on different supporting materials,including carbons,metal-organic frameworks,and other *** are also provided for designing high-performance Mg-based materials using nanoconfinement.

关键词： magnesium-based materials hydrogen storage nanoconfinement carbon materials

Effects of(Mg_(1/3)Sb_(2/3))^(4+)substitution on the structure and microwave dielectric properties of Ce_(2)Zr_(3)(MoO_(4))_(9) ceramics

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Journal of Advanced Ceramics 2021年第4期10卷 778-789页

作者： Xu ZHOU Lintao LIU Jiajia SUN Ningkang ZHANG Huazhang SUN Haitao WU Wenhong TAO school of environmental and material engineering Yantai UniversityYantai 264005China school of materials Science and engineering University of JinanJinan 250022China

Ce2[Zr_(1-x)(Mg_(1/3)Sb_(2/3))_(x)]_(3)(MoO_(4))_(9)(0.02≤x≤0.10)ceramics were prepared by the traditional solid-state method.A single phase,belonging to the space group of R3c,was detected by using X-ray diffraction at the sintering temperatures ranging from 700 to 850℃.The microstructures of samples were examined by applying scanning electron microscopy(SEM).The crystal structure refinement of these samples was investigated in detail by performing the Rietveld refinement *** intrinsic properties were calculated and explored via far-infrared reflectivity *** correlations between the chemical bond parameters and microwave dielectric properties were calculated and analyzed by Phillips-van Vechten-Levine(P-V-L)***_(2)[Zr_(0.94)(Mg_(1/3)Sb_(2/3))_(0.06)]_(3)(Mo0_(4))_(9)ceramics with excellent dielectric properties were sintered at 725℃for 6 h(εr=10.37,Q×f=71,748 GHz,andτf=-13.6 ppm/℃,εr is the dielectric constant,τf is the quality factor,and rf is the temperature coefficient of resonant frequency).

关键词： crystal structure Phillips-van Vechten-Levine(P-V-L)theory microwave dielectric property (Mg_(1/3)Sb_(2/3))doping

Construction of superhydrophobic directly Z-scheme bismuth oxybromide/silver phosphate fabric surface with UV shielding and enhanced visible light absorption activity

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Science China(Technological Sciences) 2021年第4期64卷 785-792页

作者： GE Bo ZHANG YuLing ZHANG TingXiao REN GuiNa LI WenZhi ZHAO Hui school of materials Science and engineering Liaocheng UniversityLiaocheng 252000China school of environmental and material engineering Yantai UniversityYantai 264405China

Various forms of pollutants discharged from industrial and life;how to treat the opposite water-soluble pollutants at the same time is a ***,a superhydrophobic BiOBr/Ag3PO4 fabric(SH fabric)bulk material was prepared aiming at the diversity of ***(WCA=160°)and oil contaminants(spread)have different wetting behavior on fabric *** high recovery efficiency for oil pollutants was achieved by using the selective oil removal property of the SH ***,the pollutants in the aqueous phase were removed by photocatalyst after oil/water *** analysis demonstrated that the direct Z-type heterojunction formed between BiOBr(EVB=1.66 eV;ECB=-1.08 eV)and Ag3PO4(EVB=3.03 eV;ECB=0.6 eV).It is worth noting that the SH fabric exhibited good mechanical stability and UV shielding performance,which have potential application in environmental control.

关键词： superhydrophobic UV shielding oil-water separation pollutant removal

Advanced ferroferric oxide-based composites for lithium-ion battery: Recent developments and future perspectives

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Progress in Natural Science:materials International 2023年第6期33卷 743-753页

作者： Huiyu Jiang Qin Mu Hideo Kimura Rui Liu Wenyue Yang Liyuan Liu Wei Du Chuanxin Hou school of environmental and material engineering Yantai University Shandong Institute of Scientific and Technical Information Shandong university of Aeronautics

Lithium-ion batteries(LIBs) possess remarkable advantages in terms of abundant reserves,high theoretical capacity,and low ***,the current graphite anodes fail to meet the daily requirements of *** study of novel high-energy storage LIBs anode materials is increasingly *** oxide(Fe3O4)anode material is listed as a research object due to its exceptional theoretical specific capacity,cost-effectiveness,sufficient resources,and simple preparation ***,the low conductivity and volume expansion issues limit its long-term development and widespread ***,extensive research has been reported on Fe3O4composite electrode materials with diverse structures,achieving significant *** review summarizes the latest progress in high-performance Fe3O4composites based on recent ***,Fe3O4composite anode materials based on dimensions is categorized and the structure-property relationship with different dimensions is *** work will motivate the preparation of Fe3O4-based composites electrodes with high electrochemical performance for lithium-ion batteries,aims to promote the commercial application of rechargeable lithium-ion energy storages.

关键词： Lithium-ion batteries Fe3O4 Transition metal oxide Anode Morphology construction

Effect of Anodization Parameters on Morphology and Photocatalysis Properties of TiO_2 Nanotube Arrays

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Journal of materials Science & Technology 2015年第10期31卷 1059-1064页

作者： Lianjie Qin Qijing Chen Ruijun Lan Runqian Jiang Xiao Quan Bin Xu Feng Zhang Yongmin Jia school of Environment and material engineering Yantai University school of Opto-electrical Information Science and Technology Yantai University

Highly ordered TiO2 nanotube arrays were fabricated via electrochemical anodization of high purity Ti foil in fluoride-containing electrolyte. The effects of applied anodization potential, anodization time on the formation of TiO2 nanotube arrays and the photocatalytic degradation of methylene blue （MB） were discussed. The TiO2 nanotube arrays calcined at 500 ℃ for 2 h show pure anatase phase. The pore diameters of TiO2 nanotube arrays can be adjusted from 30 to 90 nm using a different anodization voltage. Anodization time mainly influenced TiO2 tube length, and by increasing the anodization time, the nanotube length became longer gradually. When the anodization potential was 40 V, the average growth rate of TiO2 nanotube was about 4.17 μm/h. Both anodization potential and time had important effects on the photocatalytic efficiency. The TiO2 nanotube arrays obtained at anodization potential of 40 V for I h showed the best photocatalytic degradation ratio of MB.

关键词： TiO2 nanotubes Electrochemical anodization Photocatalysis

Crystal structure,chemical bond characteristics,infrared reflection spectrum,and microwave dielectric properties of Nd_(2)(Zr_(1−x)Ti_(x))_(3)(MoO_(4))_(9) ceramics

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Journal of Advanced Ceramics 2023年第1期12卷 82-92页

作者： Jian BAO Yuping ZHANG Hideo KIMURA Haitao WU Zhenxing YUE school of environmental and material engineering Yantai UniversityYantai 264005China State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China

Microwave dielectric ceramics(MWDCs)with low dielectric constant and low dielectric loss are desired in contemporary society,where the communication frequency is developing to high frequency(sub-6G).Herein,Nd_(2)(Zr_(1−x)Ti_(x))_(3)(MoO_(4))_(9)(NZ_(1−x)T_(x)M,x=0.02-0.10)ceramics were prepared through a solid-phase *** to X-ray diffraction(XRD)patterns,the ceramics could form a pure crystal structure with the R3c(167)space *** internal parameters affecting the properties of the ceramics were calculated and analyzed by employing Clausius-Mossotti relationship,Shannon’s rule,and Phillips-van Vechten-Levine(P-V-L)***,theoretical dielectric loss of the ceramics was measured and analyzed by a Fourier transform infrared(IR)radiation ***,when x=0.08 and sintered at 700℃,optimal microwave dielectric properties of the ceramics were obtained,including a dielectric constant(ε_(r))=10.94,Q·f=82,525 GHz(at 9.62 GHz),and near-zero resonant frequency temperature coefficient(τ_(f))=−12.99 ppm/℃.This study not only obtained an MWDC with excellent properties but also deeply analyzed the effects of Ti^(4+)on the microwave dielectric properties and chemical bond characteristics of Nd_(2)Zr_(3)(MoO_(4))_(9)(NZM),which laid a solid foundation for the development of rare-earth molybdate MWDC system.

关键词： microwave dielectric ceramics(MWDCs) Nd_(2)(Zr_(1−x)Ti_(x))_(3)(MoO_(4))_(9)(NZ_(1−x)T_(x)M) Phillips-van Vechten-Levine(P-V-L)theory theoretical dielectric loss

Crystal structure and enhanced microwave dielectric properties of the Ce_(2)[Zr_(1−x)(Al_(1/2)Ta_(1/2))_(x)]_(3)(MoO_(4))_(9) ceramics at microwave frequency

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Journal of Advanced Ceramics 2022年第3期11卷 392-402页

作者： Chao FENG Xu ZHOU Bingjing TAO Haitao WU Shifeng HUANG Shandong Provincial Key Laboratory of Preparation and Measurement of Building materials University of JinanJinan250022China school of environmental and material engineering Yantai UniversityYantai264005China

Dense microwave dielectric ceramics of Ce_(2)[Zr_(1−x)(Al_(1/2)Ta_(1/2))_(x)]_(3)(MoO_(4))_(9)(CZMAT) (x = 0.02–0.10) were prepared by the conventional solid-state route. The effects of (Al1/2Ta1/2)^(4+) on their microstructures, sintering behaviors, and microwave dielectric properties were systematically investigated. On the basis of the X-ray diffraction (XRD) results, all the samples were matched well with Pr_(2)Zr_(3)(MoO_(4))_(9) structures, which belonged to the space group R3¯c. The lattice parameters were obtained using the Rietveld refinement method. The correlations between the chemical bond parameters and microwave dielectric properties were calculated and analyzed by using the Phillips—Van Vechten—Levine (P—V—L) theory. Excellent dielectric properties of Ce_(2)[Zr_(0.94)(Al_(1/2)Ta_(1/2))_(0.06)]_(3)(MoO_(4))_(9) with a relative permittivity (ε_(r)) of 10.46, quality factor (Q × f) of 83,796 GHz, and temperature coefficient of resonant frequency (τ_(f)) of −11.50 ppm/℃ were achieved at 850 ℃.

关键词： microwave dielectric ceramics Ce_(2)[Zr_(1−x)(Al_(1/2)Ta_(1/2))_(x)]_(3)(MoO_(4))_(9)(CZMAT) Phillips-Van Vechten-Levine(P-V-L)theory low sintering temperature

A slippery hydrogel coating with durable oil-repellent property and self-regeneration capacity

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Science China(Technological Sciences) 2022年第8期65卷 1819-1827页

作者： XU Ting GAO ZhongShuai LI FangChao MIAO Gan JIA YuYu MIAO Xiao ZHU XiaoTao LU JingWei WANG Bo SONG YuanMing REN GuiNa LI XiangMing school of environmental and material engineering Yantai UniversityYantai 264405China Shandong Key Laboratory of Optical Communication Science and Technology School of Physics Science and Information TechnologyLiaocheng UniversityLiaocheng 252000China

Traditional lubricant impregnated surfaces usually required fluorinated lubricants to achieve slippery oil repellency, but the lubricants infused were expensive and toxic and also suffered from limited stability because of their migrating, evaporating, and leaking during use. Herein, to address this issue, we fabricated a durably fluorine-free slippery oil-repellent hydrogel coating using water as the lubricant. Due to its enhanced water-binding affinity, water could wet the hydrogel completely and form a hydrated-water layer on the surface. The hydrated water layer could act as a lubricant to repel foreign oils, which allowed the hydrogel to display slippery oil-repellency in air, exhibit superoleophobicity underwater, and resist oil fouling upon oil *** hydrogel kept its oil-repellent properties after mechanical tests as well as thermal and freezing treatments,demonstrating its durability. Thanks to its moisture absorption, the water lubricant layer could self-regenerate upon the lubricated water layer depletion through exposure to a humid environment. Exploiting it is water-attracting and oil repellency, the hydrogel coating was demonstrated as a versatile platform for oil/water separation, polymer/water separation, drag-reduction, and antifogging.

关键词： slippery oil repellency self-regeneration moisture absorbing oil/water separation

Structure characteristics and microwave dielectric properties of Pr_(2)(Zr_(1-x)Ti_(x))_(3)(MoO_(4))_(9) solid solution ceramic with a stable temperature coefficient

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Journal of materials Science & Technology 2022年第21期116卷 121-129页

作者： Huanrong Tian Jinjie Zheng Lintao Liu Haitao Wu Hideo Kimura Yizhong Lu Zhenxing Yue school of environmental and material engineering Yantai UniversityYantai 264005China school of materials Science and engineering University of JinanJinan 250022China State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China

Pr_(2)(Zr_(1−x)Ti_(x))_(3)(MoO_(4))_(9)(x=0.1-1.0)ceramics were prepared via a conventional solid-state method,the dependence of crystal structure and bond characteristics on microwave dielectric properties was investigated *** X-ray diffraction patterns indicated that the single-phase Pr_(2)Zr_(3)(MoO_(4))_(9)structure was formed in all the *** the Ti^(4+)content increased,the lattice volume gradually decreased,which was ascribed to the fact that the ionic radius of Ti^(4+)was smaller than that of Zr^(4+).Notably,outstanding microwave dielectric properties withεr of 10.73-16.35,Q·f values of 80,696-18,726 GHz and minorτ_(f) values−14.1-−2.6 ppm/℃were achieved in Pr_(2)(Zr_(1−x)Ti_(x))_(3)(MoO_(4))_(9)***ε_(r) increased with the rising x values,which was associated with the increase ofα/Vm *** decreasing Q·f was affected by the decline of lattice energy of[Zr/TiO_(6)]***τf value was dominated by[Zr/TiO_(6)]octahedral distortion,Mo-O bond energy,bond strength and B-site bond ***,infrared reflection spectra suggested that the properties were mainly caused by the absorption of phonon,and the dielectric loss could be further reduced by optimizing the experimental process.

关键词： Pr_(2)(Zr_(1-x)Ti_(x))_(3)(MoO_(4))_(9) Normalized bond length Bond characteristics Raman spectra