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| 1 | Significantly improved hydrogen storage behaviors in MgH_(2) with Nb nanocatalyst显示文摘The study explores the excellent modification effect of Nb nanocatalyst prepared via surfactant assisted ball milling technique(SABM)on the hydrogen storage properties of MgH_(2).Optimal catalyst doping concentration was determined by comparing onset decomposition temperature,released hydrogen capacity,and reaction rate for different MgH_(2)-ywt%Nb(y=0,3,5,7,9)composites.The MgH_(2)-5wt%Nb composite started releasing hydrogen at 186.7℃ and a total of 7.0wt%hydrogen was released in the dehydrogenation process.In addition,5wt%Nb doped MgH_(2) also managed to release 4.2wt%H_(2) within 14 min at 250℃ and had the ability to absorb 4.0wt%hydrogen in 30 min at 100℃.Cycling tests revealed that MgH_(2)-5wt%Nb could retain 6.3wt%H_(2) storage capacity(89.2%)after 20 cycles.Dehydrogenation and hydrogenation activation energy values were decreased from 140.51±4.74 and 70.67±2.07 kJ·mol^(−1) to 90.04±2.83 and 53.46±3.33 kJ·mol^(−1) after doping MgH_(2) with Nb,respectively.Microstructure analysis proved that homogeneously distributed NbH acted as active catalytic unit for improving the hydrogen storage performance of MgH_(2).These results indicate SABM can be considered as an option to develop other nanocatalysts for energy related areas. | Farai Michael Nyahuma Liuting Zhang Mengchen Song Xiong Lu Beibei Xiao Jiaguang Zheng Fuying Wu | 2022 | International Journal of Minerals,Metallurgy and Materials2022，29，9： | 3 |
| 2 | Constructing graphene nanosheet-supported FeOOH nanodots for hydrogen storage of MgH2显示文摘Novel graphene-supported FeOOH nanodots(FeOOH NDs@G)were successfully prepared by a facile hydrothermal method and doped into MgH_(2)through mechanical ball-milling.MgH_(2)with 10wt%FeOOH NDs@G began to release hydrogen at 229.8℃,which is106.8℃ lower than that of pure MgH_(2).The MgH_(2)-10wt%FeOOH NDs@G composite could reversibly absorb 6.0wt%hydrogen at 200℃ under a 3.2 MPa hydrogen pressure within 60 min.With the addition of FeOOH NDs@G,the dehydrogenation and hydrogenation activation energy of MgH_(2)was decreased to 125.03 and 58.20 kJ·mol^(-1)(156.05 and 82.80 kJ·mol^(-1)for pure MgH_(2)),respectively.Furthermore,the hydrogen capacity of the FeOOH NDs@G composite retained 98.5%of the initial capacity after 20 cycles,showing good cyclic stability.The catalytic action of FeOOH NDs@G towards MgH_(2)could be attributed to the synergistic effect between graphene nanosheets and in-situ formed Fe,which prevented the aggregation of Mg/MgH2 particles and accelerated the hydrogen diffusion during cycling,thus enabling the Mg H_(2)-10wt%FeOOH NDs@G composite to exhibit excellent hydrogen storage performance. | Mengchen Song Liuting Zhang Jiaguang Zheng Zidong Yu Shengnan Wang | 2022 | International Journal of Minerals,Metallurgy and Materials2022，29，7： | 3 |
| 3 | Boosting the hydrogen storage performance of magnesium hydride with metal organic framework-derived Cobalt@Nickel oxide bimetallic catalyst显示文摘In this study,a MOF-derived bimetallic Co@NiO catalyst was synthesized and doped into MgH_(2)to improve the hydrogen desorption and resorption kinetics.The Co@NiO catalyst decreased the onset dehydrogenation temperature of MgH_(2)by 160℃,compared with un-doped MgH_(2).The MgH^(2+)9%(mass)Co@NiO composite released 6.6%(mass)hydrogen in 350 s at 315℃and uptook 5.4%(mass)hydrogen in500 s at 165℃,showing greatly accelerated de/rehydrogenation rates.Besides,the desorption activation energy of MgH^(2+)9%(mass)Co@NiO was decreased to(93.8±8.4)kJ·mol^(-1).Noteworthy,symbiotic Mg_(2)NiH_(4)/Mg_(2)CoH_(5)clusters were in-situ formed from bimetallic precursors and inlaid on MgH_(2)surface,which are considered as'multi-step hydrogen pumps',and provides surface pathways for hydrogen absorption.Meanwhile,the introduced Mg_(2)NiH_(4)/Mg_(2)CoH_(5)interfaces could provide numerous low energy barrier H diffusion channels,therefore accelerating the hydrogen release and uptake.This research proposes new insights to design high-efficiency bimetallic catalyst for MgH_(2)hydrogen storage. | Yan Zhang Jiaguang Zheng Zhiyu Lu Mengchen Song Jiahuan He Fuying Wu Liuting Zhang | 2022 | Chinese Journal of Chemical Engineering2022，，12： | 2 |
| 4 | Bullet-like vanadium-based MOFs as a highly active catalyst for promoting the hydrogen storage property in MgH_(2)显示文摘The practical application of magnesium hydride(MgH_(2))was seriously limited by its high desorption temperature and slow desorp-tion kinetics.In this study,a bullet-like catalyst based on vanadium related MOFs(MOFs-V)was successfully synthesized and doped with MgH_(2) by ball milling to improve its hydrogen storage performance.Microstructure analysis demonstrated that the as-synthesized MOFs was consisted of V_(2)O_(3) with a bullet-like structure.After adding 7wt%MOFs-V,the initial desorption temperature of MgH_(2) was reduced from 340.0 to 190.6℃.Besides,the MgH_(2)+7wt%MOFs-V composite released 6.4wt%H_(2) within 5 min at 300℃.Hydrogen uptake was started at 60℃under 3200 kPa hydrogen pressure for the 7wt%MOFs-V containing sample.The desorption and absorption apparent activity energies of the MgH_(2)+7wt%MOFs-V composite were calculated to be(98.4±2.9)and(30.3±2.1)kJ·mol^(-1),much lower than(157.5±3.3)and(78.2±3.4)kJ·mol^(−1) for the as-prepared MgH_(2).The MgH_(2)+7wt%MOFs-V composite exhibited superior cyclic property.During the 20 cycles isothermal dehydrogenation and hydrogenation experiments,the hydrogen storage capacity stayed almost unchanged.X-ray diffraction(XRD)and X-ray photoelectron spectrometer(XPS)measurements confirmed the presence of metallic vanadium in the MgH_(2)+7wt%MOFs-V composite,which served as catalytic unit to markedly improve the hydrogen storage properties of Mg/MgH_(2) system. | Zhiyu Lu Jiahuan He Mengchen Song Yan Zhang Fuying Wu Jiaguang Zheng Liuting Zhang Lixin Chen | 2023 | International Journal of Minerals,Metallurgy and Materials2023，30，1： | 1 |
| 5 | ArsenatesorptionontwoChineseredsoilsevaluated with macroscopic measurements andextendedXrayabsorption finestructurespectroscopy显示文摘 | LuoL ZhangS ShanX JiangW ZhuY LiuT XieY McLarenRG | 2006 | Environmental Toxicology& Chemistry2006，25，12： | 1 |
| 6 | Study on theoptical polarized properties for the PbW04 crystal withraspite structures 显示文摘 | LiuT Y Zhang Q R Zhuang S L | 2007 | Optical Materials2007，29，8： | 1 |
| 7 | Biomimetic Moth-eye Anti-reflective Poly-(methyl methacrylate)Nanostructural Coating显示文摘This study reports a simple imprinting method for the fabrication of biomimetic moth-eye antireflective polymethyl methacrylate(PMMA)nanostructures on the surface of the substrate.The antireflection structured silicon was obtained by Reactive Ion Etching(RIE)method.By using the antireflection structured silicon substrate as the imprinting stamp,the biomimetic moth-eye polymer structures showed tapered holes,whose depth and periodicity were around 780 nm and 580 nm,respectively.The reflectance of the resulting PMMA structures was reduced from 10% to less than 1% in the wavelength range from 300 nm to 1600 nm.This simple methodology can be scaled up via self-loading and nanoimprinting,which may have a promising application in optoelectronic devices and solar cells. | Hongbo Xu Liuting Gong Shoucai Zhang Renping Ma Lei Pan Jiupeng Zhao Yao Li | 2019 | Journal of Bionic Engineering2019，16，6： | 1 |
| 8 | Stochastic perturbation finite elements显示文摘 | Zhang Y M Chen S H Liut Q L | 1996 | Computers & Structures1996，59，3： | 1 |
| 9 | An ionic liquid supported CeO_2 nanoparticles-carbon nanotubes composite-enhanced electrochemical DNA-based sensor for the detection of Pb^(2+)显示文摘An electrochemical sensor incorporating a signal enhancement for the determination of lead(II) ions(Pb 2t) was designed on the basis of the thrombin-binding aptamer(TBA) as a molecular recognition element and ionic liquid supported cerium oxide(CeO 2) nanoparticles-carbon nanotubes composite modification.The composite comprises nanoparticles CeO 2,multi-wall carbon nanotubes(MWNTs) and hydrophobic room temperature ionic liquid(RTIL) 1-ethyl-3-methylimidazolium tetrafluoroborate(EMIMBF 4).The electrochemical sensors were fabricated by immersing the CeO 2-MWNTs-EMIMBF 4 modified glassy carbon electrode(GCE) into the solution of TBA probe.In the presence of Pb 2t,the TBA probe could form stable G-quartet structure by the specific binding interactions between Pb 2t and TBA.The TBA-bound Pb 2t can be electrochemically reduced,which provides a readout signal for quantitative detection of Pb 2t.The reduction peak current is linearly related to the concentration of Pb 2t from 1.0 10-8 M to 1.0 10-5 M with a detection limit of 5 10-9 M.This work demonstrates that the CeO 2-MWNTs-EMIMBF 4 nanocomposite modified GCE provides a promising platform for immobilizing the TBA probe and enhancing the sensitivity of the DNA-based sensors. | Yan Lia Xiao-Rong Liut Xiao-Hui Ning Can-Can Hnang Jian-Bin Zheng Jun-cai Zhang | 2011 | Journal of Pharmaceutical Analysis2011，1，4： | 1 |
| 10 | Recent advances of magnesium hydride as an energy storage material显示文摘Energy storage is the key for large-scale application of renewable energy,however,massive efficient en-ergy storage is very challenging.Magnesium hydride(MgH_(2))offers a wide range of potential applications as an energy carrier due to its advantages of low cost,abundant supplies,and high energy storage capac-ity.However,the practical application of MgH_(2) for energy storage is still impeded by its sluggish kinetics,poor cycling stability,etc.Herein,we provide an overview of recent advances of MgH_(2) for enhancing the hydrogen storage,lithium-ion storage,and heat storage performances.For hydrogen storage,a particular emphasis was put on altering the kinetics and thermodynamics of MgH_(2) via catalyzing,alloying,nano-sizing,and compositing.Modifications to MgH_(2) as a battery anode material mainly focus on the effect of additives,electrolytes,and structure configurations.Prototype heat storage apparatus was proposed based on MgH_(2) and coupled with other materials or systems to improve the heat storage and economic efficiency.Besides,prospects of MgH_(2) in these fields are discussed.This review would stimulate more insightful and pioneering research for the design and preparation of MgH_(2) with excellent energy storage performances. | Mengchen Song Liuting Zhang Fuying Wu Haoyu Zhang Hu Zhao Lixin Chen Hong Li | 2023 | Journal of Materials Science & Technology2023，，18： | 0 |
| 11 | Flexible multi-level quasi-volatile memory based on organic vertical transistor显示文摘Driven by important megatrends such as cloud computing,artificial intelligence,and the Internet of Things,as a device used to store programs and data in computing systems,memory is struggling to catch up with the explosive growth of data and bandwidth requirements in the system.However,the storage wair between non-volatile memory and volatile memory retards the further improvement of modern memory computing systems.Herein,a quasi-volatile transistor memory based on organic polymer/perovskite quantum dot blend was fabricated using the vertical transistor configuration.Contributing to vertical structure and appropriate doping ratio of blend film,the quasi-volatile memory device displayed 1,560 times longer data retention time(>100 s)with respect to the dynamic random access memory and fast data programming speed(20 ps)in which was far more quickly than that of other organic non-volatile memories to fill the gap between volatile and non-volatile memories.Moreover,the device retention characteristics could be further promoted under the photoelectric synergistic stimulation,which also provided the possibility to reduce electric writing condition.Furthermore,the quasi-volatile memory device showed good electrical performance under bending conditions.This work provides a simple solution to fabricate multi-level quasi-volatile memory,which opens up a whole new avenue of'universal memory'and lays a solid foundation for low power and flexible random access memory devices. | Huihuang Yang Qian Yang Lihua He Xiaomin Wu Changsong Gao Xianghong Zhang Liuting Shan Huipeng Chen Tailiang Guo | 2022 | Nano Research2022，15，1： | 0 |
| 12 | Combined “Gateway” and “Spillover” effects originated from a CeNi_(5) alloy catalyst for hydrogen storage of MgH_(2)显示文摘Efficient catalysts enable MgH2 with superior hydrogen storage performance.Herein,we successfully synthesized a catalyst composed of Ce and Ni (i.e.CeNi_(5) alloy) with splendid catalytic action for boosting the hydrogen storage property of magnesium hydride (MgH_(2))The MgH2–5wt%CeNi_(5) composite’s initial hydrogen release temperature was reduced to 174℃ and approximately 6.4wt%H_(2) was released at 275℃ within 10 min.Besides,the dehydrogenation enthalpy of MgH_(2) was slightly decreased by adding CeNi_(5).For hydrogenation,the fully dehydrogenated sample absorbed 4.8wt%H_(2) at a low temperature of 175℃.The hydrogenation apparent activation energy was decreased from(73.60±1.79) to (46.12±7.33) kJ/mol.Microstructure analysis revealed that Mg_(2)Ni/Mg_(2)NiH_(4) and CeH_(2.73) were formed during the process of hydrogen absorption and desorption,exerted combined“Gateway”and“Spillover”effects to reduce the operating temperature and improve the hydrogen storage kinetics of MgH_(2).Our work provides an example of merging“Gateway”and“Spillover”effects in one catalyst and may shed light on designing novel highly-effective catalysts for MgH_(2) in near future. | Mengchen Song Runkai Xie Liuting Zhang Xuan Wang Zhendong Yao Tao Wei Danhong Shang | 2023 | International Journal of Minerals,Metallurgy and Materials2023，30，5： | 0 |
| 13 | Enhanced hydrogen storage properties of Mg by the synergistic effect of grain refinement and NiTiO_(3)nanoparticles显示文摘As a promising hydrogen storage material,the practical application of magnesium is obstructed by the stable thermodynamics and sluggish kinetics.In this paper,three kinds of NiTiO3catalysts with different mole ratio of Ni to Ti were successfully synthesized and doped into nanocrystalline Mg to improve its hydrogen storage properties.Experimental results indicated that all the Mg-NiTiO3composites showed prominent hydrogen storage performance.Especially,the Mg-NiTiO3/TiO2composite could take up hydrogen at room temperature and the apparent activation energy for hydrogen absorption was dramatically decreased from 69.8±1.2(nanocrystalline Mg)k J/mol to 34.2±0.2 k J/mol.In addition,the hydrogenated sample began to release hydrogen at about 193.2℃and eventually desorbed 6.6 wt%H2.The desorption enthalpy of the hydrogenated Mg-NiTiO3-C was estimated to be 78.6±0.8 k J/mol,5.3 k J/mol lower compared to 83.9±0.7 k J/mol of nanocrystalline Mg.Besides,the sample revealed splendid cyclic stability during 20 cycles.No obvious recession occurred in the absorption and desorption kinetics and only 0.3 wt%hydrogen capacity degradation was observed.Further structural analysis demonstrates that nanosizing and catalyst doping led to a synergistic effect on the enhanced hydrogen storage performance of Mg-NiTiO3-C composite,which might serve as a reference for future design of highly effective hydrogen storage materials. | Nianhua Yan Xiong Lu Zhiyu Lu Haijie Yu Fuying Wu Jiaguang Zheng Xiuzhen Wang Liuting Zhang | 2022 | Journal of Magnesium and Alloys2022，10，12： | 0 |
| 14 | FeCoNiCrMo high entropy alloy nanosheets catalyzed magnesium hydride for solid-state hydrogen storage显示文摘The catalytic effect of FeCoNiCrMo high entropy alloy nanosheets on the hydrogen storage performance of magnesium hydride(MgH_(2))was investigated for the first time in this paper.Experimental results demonstrated that 9wt%FeCoNiCrMo doped MgH_(2)started to dehydrogenate at 200℃and discharged up to 5.89wt%hydrogen within 60 min at 325℃.The fully dehydrogenated composite could absorb3.23wt%hydrogen in 50 min at a temperature as low as 100℃.The calculated de/hydrogenation activation energy values decreased by44.21%/55.22%compared with MgH_(2),respectively.Moreover,the composite’s hydrogen capacity dropped only 0.28wt%after 20 cycles,demonstrating remarkable cycling stability.The microstructure analysis verified that the five elements,Fe,Co,Ni,Cr,and Mo,remained stable in the form of high entropy alloy during the cycling process,and synergistically serving as a catalytic union to boost the de/hydrogenation reactions of MgH_(2).Besides,the FeCoNiCrMo nanosheets had close contact with MgH_(2),providing numerous non-homogeneous activation sites and diffusion channels for the rapid transfer of hydrogen,thus obtaining a superior catalytic effect. | Tao Zhong Haoyu Zhang Mengchen Song Yiqun Jiang Danhong Shang Fuying Wu Liuting Zhang | 2023 | International Journal of Minerals,Metallurgy and Materials2023，30，11： | 0 |
| 15 | The effect of different Co phase structure(FCC/HCP)on the catalytic action towards the hydrogen storage performance of MgH_(2)显示文摘High hydrogen desorption temperature and sluggish reaction kinetics are the major limitations for the practical application of MgH_(2).In this study,Co particles with a face centered cubic(FCC)structure and a hexagonal close packed(HCP)structure were prepared facilely and proved to be good catalysts for magnesium hydride.Co particles with FCC structure presented better catalytic effect on MgH_(2)than that with HCP structure.Both 7%(mass)Co FCC and HCP particle modified MgH_(2)decreased the initial dehydrogenation temperature from 301.3℃ to approximately 195.0℃,but 7%(mass)Co with FCC structure modified MgH_(2)has a faster desorption rate,and around 6.5%(mass)H_(2)was desorbed in 10 min at325℃.Hydrogen uptake was detected at 70℃ under 3.25 MPa hydrogen pressure and 6.0%(mass)H_(2)was recharged in 40 min at 150℃.The hydrogen desorption and absorption activation energy for 7%(mass)FCC Co modified MgH_(2)was significantly decreased to(76.6±8.3)kJ·mol^(-1) and(68.3±6.0)kJ·mol^(-1),respectively.Thermodynamic property was also studied,the plateau pressures of MgH_(2)+7%(mass)FCC Co were determined to be 0.14,0.28,0.53 and 0.98 MPa for 300℃,325℃,350℃ and375℃.The decomposition enthalpy of hydrogen(ΔH)for MgH_(2)+7%(mass)FCC Co was(80.6±0.1)kJ·mol^(-1),5.8 kJ·mol^(-1)lower than that of as-prepared MgH_(2).Moreover,cycling performance for the first20 cycles revealed that the reaction kinetics and capacity of MgH_(2)-FCC Co composite remained almost unchanged.The result of density functional theory calculation demonstrated that cobalt could extract the Mg AH bond and reduced the decompose energy of magnesium hydride.Our paper can be presented as a reference for searching highly effective catalysts for hydrogen storage and other energy-related research fields. | Liuting Zhang Haijie Yu Zhiyu Lu Changhao Zhao Jiaguang Zheng Tao Wei Fuying Wu Beibei Xiao | 2022 | Chinese Journal of Chemical Engineering2022，35，3： | 0 |
| 16 | Metal organic framework supported niobium pentoxide nanoparticles with exceptional catalytic effect on hydrogen storage behavior of MgH_(2)显示文摘Nb_(2)O_(5)nanoparticles with an average particle size of 10 nm supported on a rhombic dodecahedral metal organic framework(MOF)were successfully synthesized by a facile one-pot hydrothermal reaction and subsequent calcination process.Experimental results demonstrated that the prepared catalyst drastically improved the hydrogen storage behavior of MgH_(2).7 wt%Nb_(2)O_(5)@MOF doped MgH_(2)started to desorb hydrogen at 181.9℃and 6.2 wt%hydrogen could be released within 2.6 min and 6.3 min at 275℃and 250℃,respectively.The fully dehydrogenated composite also displayed excellent hydrogenation by decreasing the onset absorption temperature to 25℃and taking up4.9 wt%and 6.5 wt%hydrogen within 6 min at 1750C and 1500C,respectively.Moreover,the corresponding activation energy was calculated to be 75.57±4.16 kJ mol^(-1)for desorption reaction and 51.38±1.09 kJ mol^(-1)for absorption reaction.After 20 cycles,0.5 wt%hydrogen capacity was lost for the MgH_(2)+7 wt%Nb_(2)O_(5)@MOF composite,much lower than 1.5 wt%of the MgH_(2)+7 wt%Nb_(2)O_(5)composite.However,the addition of Nb_(2)O_(5)@MOF had limited effect on reducing the dehydrogenation enthalpy of MgH_(2).Microstructure analysis revealed that Nb_(2)O_(5)particles were uniformly distributed on surface of the MgH_(2)matrix and synergistically improved the hydrogen storage property of MgH_(2)with MOF. | Liuting Zhang Farai Michael Nyahuma Haoyu Zhang Changshan Cheng Jiaguang Zheng Fuying Wu Lixin Chen | 2023 | Green Energy & Environment2023，8，2： | 0 |
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