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中国有色金属学会会刊：英文版 2008年第3期18卷 642-647页

作者：龚晓钟汤皎宁李均钦梁永康 College of Chemistry and Chemical Engineering Shenzhen University College of material Shenzhen Key Laboratory of Special Functional MaterialsShenzhen University

La-Co alloy nanowires can be made in pulse reversal current(PRC) and direct current(DC) electrodepositions under nonaqueous system, with the porous anodic aluminum oxide(AAO) as template. This membrane is subject to the dual-oxidation (two-step) anodizing. Scanning electron microscope(SEM) examination shows that all of the nanowires have uniform diameter about 200 nm, and their diameters are determined by the pore diameter of applied AAO template. X-ray energy dispersion analysis indicates that the chemical composition of La and Co elements is very close to 1-2 in stoichiometry. X-ray diffraction pattern investigation demonstrates that La-Co nanowire is the face-centered cubic(FCC) LaCo13.

关键词：镧钴合金纳米导体电沉积 AAO模板

Tribological and tribochemical properties of magnetite nanoflakes as additives in oil lubricants

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Particuology 2014年第6期12卷 136-144页

作者： Longhua Xiang Chuanping Gao Yanmin Wang Zhidong Pan Dawei Hu College of materials Science and Engineering South China University of Technology Key laboratory of Specially functional material under Ministry of Education

This detailed the tribological and tribochemical properties of magnetite（Fe3O4） nanoflakes used as additives in #40 base oil in a four-ball *** average friction coefficient of the friction pair for lubricant containing the Fe3O4 nanoflakes of 1.5 wt%as a lubricant additive in the base oil is decreased by18.06%compared to that of solely base *** chemical composition of base oil with the Fe3O4 nanoflake additives did not change during the 48-h friction *** decreased saturation magnetization and increased coercivity of magnetite nanoflakes occurred due to the distortion of the basal planes and the presence of hematite（α-Fe3O4） generated by the tribochemical reactions during the friction *** multi-layer low-shear-stress tribochemical lubrication films on the surface of the friction pair could form because the nanoflake particles arrange and adhere onto the surface of the friction pair in an orderly manner,and the tribochemical reactions of the friction pair in the presence of the nanoflakes occur as Fe→FeO→Fe3O4→γ-FeOOH →γ-Fe2O3→α-*** formation of the films can improve the tribological properties.

关键词： Nanoflake particles Magnetite Lubricant additive Tribology Tribochemical properties

Gas‐phase fluorination of conjugated microporous polymer microspheres for effective interfacial stabilization in lithium metal anodes

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Carbon Energy 2023年第10期5卷 77-90页

作者： Zihao Li Lingchen Kong Cong Peng Wei Feng School of material Science and Engineering Tianjin UniversityTianjinChina Tianjin Key laboratory of Composite and functional materials TianjinChina

Lithium(Li)metal anodes have attracted extensive attention due to their ultrahigh theoretical capacity and low ***,the uneven deposition of Li near the unstable electrode/electrolyte interfaces leads to the growth of Li dendrites and the degradation of active ***,we directly fluorinate alkyne-containing conjugated microporous polymers(ACMPs)microspheres with fluorine gas(F_(2))to introduce a novel fluorinated interlayer as an interfacial stabilizer in lithium metal *** density functional theory methods,it is found that as-prepared fluorinated ACMP(FACMP)has abundant partially ionic C–F *** C–F bonds with electrochemical lability yield remarkable lithiophilicity during *** in situ reactions between the active C–F bonds and Li ions enable transfer of lithium fluoride microcrystals to the solid electrolyte interphase(SEI)layers,guaranteeing effective ionic distribution and smooth Li ***,Li metal electrodes with the fluorinated interlayers demonstrate excellent cycling performances in both half-batteries and full cells with a lithium bis(trifluoromethanesulfonyl)imide electrolyte as well as a nonfluorinated lithium bis(oxalate)borate electrolyte *** strategy is highly significant in customizable SEI layers to stabilize electrode interfaces and ensure high utilization of Li metal anodes,especially in a nonfluorinated electrolyte.

关键词： conjugated microporous polymers fluorinated solid electrolyte interphase gas‐phase fluorination lithium metal anodes nonfluorinated electrolyte

Synthesis, Structure and Magnetic Property of a New MOF with Triazolate and Azido Heterobridges

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Chinese Journal of Structural Chemistry 2014年第8期33卷 1159-1163页

作者：王晔赵虹刘忠义杨恩翠赵小军 College of Chemistry Key Laboratory of Inorganic-organic Hybrid Functional Material Chemistry Ministry of Education Tianjin Key Laboratory of Structure and Performance for Functional Molecules Tianjin Normal University

A new magnetic MOF with cyclic triazolate and linear azido mediators, [Co2（trz）3fN3）], 1 （trz- = 1,2,4-triazolate）, was hydrothermally synthesized and structurally and magnetically characterized. 1 crystallizes in the rhombohedral P63/mmc space group with a = b = 10.0716（17）, c = 7.5860（14） A, V = 666.4（2） A3, Dc = 1.814 g/cm3, Mr = 364.09, Z = 2, F（000） = 360,μ = 2.499 mm-1, the final R = 0.0676 and wR = 0.1952 for 229 observed reflections with 1 〉 20（/）. Complex 1 consists of linear {Co（trz）3}n chains passing through a C6 rotation axis, which are interconnected with tetrahedral Con ion by μ3-trz- ligands into a hexagonal three-dimensional antiferromagnetic framework.

关键词： triazolate azide magnetism crystal structure

A New Pillared-layer Framework with Co^Ⅱ 4-Triazole Magnetic Layer Exhibiting Strong Spin-frustration

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Chinese Journal of Structural Chemistry 2020年第3期39卷 519-525,378页

作者： DING Nan LIU Zhong-Yi CHEN Rin-Min BO Yi-Lin WANG Xiu-Guang ZHAO Xiao-Jun YANG En-Cui College of Chemistry Tianjin Key Laboratory of Structure and Performance for Functional MoleculesMOE Key Laboratory of Inorganic-organic Hybrid Functional Material ChemistryTianjin Normal UniversityTianjin 300387China

One new coordination polymer, [Co4(H2 O)4(μ3-OH)2(atz)2(L)]n(1), was solvothermally prepared by the reaction of 3-amino-1,2,4-triazole(Hatz), 4,8-disulfonyl-2,6-naphthalenedicarboxylic acid(H4 L) and Co^(Ⅱ) salt. It crystallizes in monoclinic system, space group P21/c with a = 10.4454(7), b = 12.2214(8), c = 10.0818(7) ?, b = 102.284(7), V = 1257.56(15) ?~3, Dc = 2.325 g/cm^3, Mr = 880.24, Z = 2, F(000) = 880, μ = 2.859 mm^(-1), the final R = 0.0426 and wR = 0.0822 for 5526 observed reflections with I > 2σ(I). Structural analyses indicate that 1 exhibits a three-dimensional(3 D) pillared-layer framework with triazolate extended Co4^(Ⅱ) layers supported by rigid L^(4-) connectors. Magnetically, complex 1 displays strong spin-frustrated antiferromagnetism due to the triangular magnetic lattice and cooperative antiferromagnetic couplings mediated by quadruple heterobridges.

关键词： pillared-layer framework 1,2,4-triazole spin-frustration

Synthesis and Crystal Structure of a Dialkyltin Benzamidoacetate Compound {[n-Bu_2Sn(O_2CCH_2NHCOC_6H_5)]_2O}_2·C_6H_6

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Chinese Journal of Structural Chemistry 2009年第4期28卷 482-486页

作者：张复兴王剑秋邝代治冯泳兰许志锋陈志敏曾荣英 Department of Chemistry and material Science Hunan Key Laboratory of Functional Organometallic Materials Hengyang Normal University

A dialkyltin benzamidoacetate compound {[n-Bu2Sn（O2CCH2NHCOC6H5）]2O}2· C6H6 has been synthesized by the reaction of dialkyltin oxide with benzamidoacetic acid in 1：1 molar ratio, and its structure was determined by X-ray single-crystal diffraction. The crystal belongs to orthorhombic, space group Pca21, with a = 1.9134（4）, b = 1.9605（4）, c = 2.0657（4） nm, Z = 4, V = 7.749（3） nm^3, Dc = 1.054 mg·m^-3,μ（MoKa） = 1.337 mm^-1, F（000） = 3576, the final R = 0.0405 and wR = 0.0860. According to the structural analysis, the tin atom adopts a distorted five-coordinate trigonal bipyramidal geometry, and the dimer structure is shaped by one planar four-membered Sn2O2 ring.

关键词： dialkyltin organotin benzamidoacetic acid synthesis crystal structure

Electrochemical performance of La_(2–x)Sm_xMg_(16)Ni+200 wt.% Ni(x=0, 0.1, 0.2, 0.3, 0.4) alloys

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Journal of Rare Earths 2017年第7期35卷 683-689页

作者：冯佃臣王西涛张羊换 State Key laboratory for advanced Metals and materials University of Science and Technology Beijing School of materials and Metallurgy Inner Mongolia University of Science and Technology Department of functional material Research Central Iron and Steel Research Institute

Nanocrystalline and amorphous La_（2–x）Sm_xMg_（16）Ni＋200wt.% Ni（x=0, 0.1, 0.2, 0.3, 0.4） alloys were prepared by mechanical milling technology. The structures of as-cast and milled alloys were investigated by X-ray diffraction（XRD）, scanning electron microscopy（SEM） and transmission electron microscopy（TEM）. Electrochemical performance of the alloy was studied by using an automatic galvanostatic system. The electrochemical impedance spectra（EIS） and Tafel polarization curves were measured by electrochemical workstation. The results indicated that the structures of the as-cast and milled alloys presented a multiphase structure with nanocrystalline and amorphous phase, moreover, transforming from nanocrystalline to amorphous phase with Sm doping. With the increase of Sm content, the maximum discharge capacity of the alloy was decreased from 922.6 to 649.1 m Ah/g, the high-rate discharge ability（HRD） was decreased, the cycle stability was strengthened, and the alloy exhibited excellent electrochemical kinetics. In addition, the charge-transfer resistance（R_（ct）） of alloy was lessened from 0.05874 to 0.02953 ？ and the limiting current density（I_L） was descended from 2.08366 to 1.04592 A/g with increasing Sm content.

关键词： La2Mg17-type alloy Sm doping structure electrochemical performance rare earths

Highly ameliorated gaseous and electrochemical hydrogen storage dynamics of nanocrystalline and amorphous LaMg_(12)-type alloys prepared by mechanical milling

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Journal of Iron and Steel Research International 2017年第1期24卷 50-58页

作者： Dian-chen Feng Hao Sun Zhong-hui Hou Dong-liang Zhao Xi-tao Wang Yang-huan Zhang State Key laboratory for advanced Metals and materials University of Science and Technology Beijing School of materials and Metallurgy Inner Mongolia University of Science and Technology Department of functional material Research Central Iron and Steel Research Institute

Nanocrystalline and amorphous LaMg12-type alloy-Ni composites with a nominal composition of LaMg11Ni＋x wt.% Ni（x=100,200）were synthesized via ball *** influences of ball milling duration and Ni adding amount xon the gaseous and electrochemical hydrogen storage dynamics of the alloys were systematically *** hydrogen storage performances were studied by a differential scanning calorimeter and a Sievert *** dehydrogenation activation energy of the alloy hydrides was evaluated by Kissinger *** electrochemical hydrogen storage dynamics of the alloys was investigated by an automatic galvanostatic *** H atom diffusion and apparent activation enthalpy of the alloys were *** results demonstrate that a variation in Ni content remarkably enhances the gaseous and electrochemical hydrogen storage dynamics performance of the *** gaseous hydriding rate and high-rate discharge（HRD）ability of the alloys exhibit maximum values with varying milling ***,the dehydriding kinetics of the alloys is always accelerated by prolonging milling ***,rising milling time from 5to 60 h makes the hydrogen desorption ratio（a ratio of the dehydrogenation amount in 20 min to the saturated hydrogenation amount）increase from 57%to 66%for x=100alloy and from 57%to 70%for x=***,the improvement of gaseous hydrogen storage kinetics is attributed to the descending of dehydrogenation activation energy caused by the prolonging of milling duration and growing of Ni content.

关键词： Mechanical milling Hydrogen storage Electrochemical performance Kinetics Activation energy

Theoretical Study on the Hydrogen Bonding Interactions in Complexes of 5-Hydroxytryptamine with Water

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Chinese Journal of Chemistry 2013年第8期31卷 1079-1086页

作者： Lingfei Guo Zhengguo Huang[*] Tingting Shen Lingling Ma Xiqian Niu Tianjin Key laboratory of Structure and Performance for functional Molecules Key laboratory of Inorganic-Organic Hybrid functional material Chemistry Ministry of Education College of Chemistry Tianjin Normal University Tianjin 300387 China Email: Zhengguo Huang (hsxyhzg@***)[*]Tianjin Key laboratory of Structure and Performance for functional Molecules Key laboratory of Inorganic-Organic Hybrid functional material Chemistry Ministry of Education College of Chemistry Tianjin Normal University Tianjin 300387 China

The energies, geometries and harmonic vibrational frequencies of 1 ： 1 5-hydroxytryptamine-water （5-HT-H20） complexes are studied at the MP2/6-311 ＋＋ G（d,p） level. Natural bond orbital （NBO）, quantum theory of atoms in molecules （QTAIM） analyses and the localized molecular orbital energy decomposition analysis （LMO-EDA） were performed to explore the nature of the hydrogen-bonding interactions in these complexes. Various types of hydro- gen bonds （H-bonds） are formed in these 5-HT-H20 complexes. The intermolecular C4H55HT＇＂Ow H-bond in HTW3 is strengthened due to the cooperativity, whereas no such cooperativity is found in the other 5-HT-H20 complexes. H-bond in which nitrogen atom of amino in 5-HT acted as proton donors was stronger than other H-bonds. Our researches show that the hydrogen bonding interaction plays a vital role on the relative stabilities of 5-HT-H20 complexes.

关键词： natural bond orbital (NBO) quantum theory of atoms in molecules (QTAIM) localized molecular or-bital energy decomposition analysis (LMO-EDA) hydrogen bond

One-dimension carbon self-doping g-C3N4 nanotubes： Synthesis and application in dye-sensitized solar cells

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Nano Research 2018年第3期11卷 1322-1330页

作者： Xue Li Kai Pan Yang Qu Guofeng Wang Key laboratory of functional Inorganic material Chemistry Ministry of Education School of Chemistry and Materials Science Heilongjiang University Harbin 150080 China

One-dimensional carbon self-doping g-C3N4 nanotubes （CNT） with abundant communicating pores were synthesized via thermal polymerization of saturated or supersaturated urea inside the framework of a melamine sponge for the first time. A - 16% improvement in photoelectric conversion efficiency （η） is observed for the devices fabricated with a binary hybrid composite of the obtained CNT and TiO2 compared to pure TiO2 device. The result of EIS analysis reveals that the interfacial resistance of the TiO2-dye｜ I3^-/I- electrolyte interface of TiO2-CNT composite cell is much lower than that of pure TiO2 cell. In addition, the TiOa-CNT composite cell exhibits longer electron recombination time, shorter electron transport time, and higher charge collection efficiency than those of pure TiO2 cell. Systematic investigations reveal that the CNT boosts the light harvesting ability of the photovoltaic devices by enhancing not only the visible light absorption but also the charge separation and transfer.

关键词： g-C3N4 nanotube photoelectric conversion solar cells