CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Xinyin Cai,Yanan Xu,Qinyou An,Yalong Jiang,Ziang Liu,Fangyu Xiong,Wenyuan Zou,Gang Zhang,Yuhang Dai,Ruohan Yu,Liqiang Mai
Magnesium metal batteries have attracted much attention due to the good safety, low cost of magnesium and high theoretical volumetric capacity. However, developing magnesium metal batteries is restricted by large polarization and sluggish kinetics during Mg insertion/deinsertion process. Herein, TiO 2 ultrafine nanocrystals derived from Ti-metal–organic-framework (Ti-MOF) are applied as the cathodes in magnesium metal batteries. Remarkably, an ultralong life of the Mg(s) || TiO 2 battery can be obtained during cycling (capacity retention of 75% after 1000 cycles). On the basis of in-situ XRD characterization and cyclic voltammetry analysis, a high pseudocapacitive performance is found, which results in the high kinetics. Moreover, according to Arrhenius behavior, carbon skeleton in TiO 2 cathode can facilitate ion migration and Faraday reaction, thus improving the magnesium storage performance.
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JOURNAL OF SOLID STATE CHEMISTRY
·
2023
·
IF 3.3
Yuwei Chen,Jingcheng Feng,Feidi Fan,Jun Shen,Guochun Zhang,Heng Tu
Three new transition-metal-based borate crystals, Li 5 MgSrMB 12 O 24 (M = Cr, Ni) and Li 5 ZnSrNiB 12 O 24 , were obtained using the high temperature solution method. Their structures were determined by the single crystal X-ray diffraction, which crystallize in the trigonal R 3 ¯ space group. The [B 3 O 11 ] groups in the structures lead to the long distance between two nearest magnetic ions, which can reduce the interaction of adjacent magnetic centers. The magnetic properties and thermal stabilities of the title compounds were also investigated. The results indicated that Li 5 MgSrCrB 12 O 24 has stable chemical-physical properties and its maximum –ΔS m value of 14.33 J kg −1 ·K −1 at 2 K for Δμ 0 H = 9 T reaching 88.6% of the theoretical paramagnetic limit, suggesting its potential application on the magnetic refrigeration.
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ChemElectroChem
·
2020
·Vol. 7
·期 5
·1115-1124
·
IF 4.154
Yuan Cen,Yuping Liu,Yan Zhou,Licheng Tang,Pengfei Jiang,Jiahong Hu,Qin Xiang,Bingbing Hu,Chuanlan Xu,Danmei Yu,Changguo Chen
Graphical High energy density : A spinel Li 4 Mn 5 O 12 cathode material with unique nano-/microspheres is prepared by using a low-temperature method. As a cathode for 2 V hybrid Mg−Li batteries, Li 4 Mn 5 O 12 exhibits a reversible specific capacity of 155 mAh g −1 and a long discharge voltage platform exceeding 2.0 V (vs. Mg/Mg 2+ ) coupled with a high energy density of 326 Wh kg −1 at a current density of 0.1 C (1 C=163 mA g −1 ). With the increasing demand for electrical energy storage, a new Mg−Li hybrid battery with Mg anode is regarded as a promising candidate because of low cost, high volumetric capacity, and dendrite-free nature of the Mg anode. Nevertheless, the characteristics of low operation voltage and low energy density for Mg−Li hybrid batteries hinders their widespread application, owing to limited reversible cathodes. To overcome these issues, a highly reversible fast Li + insertion cathode with high voltage is an effective strategy to realize high-energy-density Mg−Li hybrid batteries. Herein, we develop the 2 V high-voltage spinel Li 4 Mn 5 O 12 cathode material with unique nano-/microspheres, using a novel low-temperature method, offering a short Li-diffusion path and sufficient transport channels for electrolyte penetration into the electrode. For the first time, we demonstrate the feasibility of the spinel Li 4 Mn 5 O 12 nano-/microspheres with hierarchical architecture as a cathode for 2 V hybrid Mg−Li batteries. It exhibits a reversible specific capacity of 155 mAh g −1 and a long discharge voltage platform exceeding 2.0 V (vs. Mg / Mg 2+ ) coupled with high energy density of 326 Wh kg −1 at a current density of 0.1 C (1 C=163 mA g −1 ). Our results pave the way of constructing new hybrid Mg−Li batteries with high voltage and high energy density.
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PROGRESS IN ORGANIC COATINGS
·
2021
·
IF 5.161
Jinhe Dou,Jing Wang,Yupeng Lu,Chuanzhong Chen,Huijun Yu,Robin Lok-Wang Ma
MAO/CS composite coatings were generated on Mg-1.75Zn-0.56Ca alloy surface for protection and improving biocompatibility of Mg -Zn- Ca alloy in the physiological environment. The microstructure, surface analysis and corrosion resistance of samples were evaluated by scanning electronic microcopy (SEM), energy dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD), X-ray Photoelectron Spectroscopy (XPS), Fourier transform infrared spectroscopy (FT-IR), potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) in SBF solution. In addition, in vitro cell cytotoxicity test was performed by MTT tests. The findings of this work indicated that MAO/CS composite coatings were smooth and defect-free. The MAO/CS coatings retained a low degradation rate and the solution pH value at a moderate level (≤7.5) during immersion test. The corrosion resistance and cell proliferation were greatly enhanced by the composite coating. Furthermore, the different cell cytotoxicity on Mg alloy, MAO and MAO/CS coating was discussed.
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高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2024
·Vol. 36
·期 1
·1-14
·
IF 2.8
Han Xinghai,Song Guihong,Luo Di,Wu Yusheng,You Junhua
Mg 3 Bi 2 /Mg/Mg 2 Sn multilayer films with varying modulation periods were deposited on single crystalline Si substrate by alternating sputtering using high pure metal Mg, Mg 3 Bi 2 and Mg 2 Sn targets. The chemical and phase composition, surface and cross section image and thermoelectric performance of deposited films were observed, measured and studied. The results revealed that the deposited films were comprised of an evident layered structure containing the metal Mg, the Mg 2 Sn and the Mg 3 Bi 2 layer. The modulation period affected the carrier transport and thermoelectric properties of multilayer films. Carrier concentration, mobility, electrical conductivity and thermal conductivity of the multilayer films decreased with increasing heterogeneous interface, which severely scatter the carriers and phonon, reducing mobility and thermal conductivity. An increase in the Seebeck coefficient, power factor ( PF ), and thermoelectric figure of merit ( ZT ) was obtained by reducing modulation period. At room temperature, the film, which possessed the shortest modulation period of 677 nm, had a maximum ZT value of about 0.26. The carrier and phonon scattering processes were significantly strengthened by the more layer interface, enhancing the deposited film’s thermoelectric figure of merit.
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Small
·
2023
·Vol. 20
·期 7
·2306576
·
IF 13.3
Wenbo Liu,Ning Wang,Yongjun Wu,Qianyi Zhang,Xiaoyan Chen,Yanmei Li,Rui Xu
The widespread acceptance of nonaqueous rechargeable metal–gas batteries, known for their remarkably high theoretical energy density, faces obstacles such as poor reversibility and low energy efficiency under high charge–discharge current densities. To tackle these challenges, a novel catalytic cathode architecture for Mg–CO 2 batteries, fabricated using a one-pot electrospinning method followed by heat treatment, is presented. The resulting structure features well-dispersed molybdenum carbide nanodots embedded within interconnected carbon nanofibers, forming a 3D macroporous conducting network. This cathode design enhances the volumetric efficiency, enabling effective discharge product deposition, while also improving electrical properties and boosting catalytic activity. This enhancement results in high discharge capacities and excellent rate capabilities, while simultaneously minimizing voltage hysteresis and maximizing energy efficiency. The battery exhibits a stable cycle life of over 250 h at a current density of 200 mA g −1 with a low initial charge–discharge voltage gap of 0.72 V. Even at incredibly high current densities, reaching 1600 mA g −1 , the battery maintains exceptional performance. These findings highlight the crucial role of cathode architecture design in enhancing the performance of Mg–CO 2 batteries and hold promise for improving other metal–gas batteries that involve deposition–decomposition reactions.
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SURFACE & COATINGS TECHNOLOGY
·
2023
·
IF 5.4
Runjia Liu,Yan Liu,Qiwen Yong,Zhi-Hui Xie,Liang Wu,Chuan-Jian Zhong
The long-term corrosion resistance of conventional micro-arc oxidation (MAO) coatings on magnesium alloy is limited by the inherent micro-scale pores. To address this issue, zeolitic imidazolate framework-8 (ZIF-8) and zinc gluconate (ZnG) loaded ZIF-8 (ZnG@ZIF-8) were synthesized and incorporated into the MAO coating. The electrochemical and immersion tests showed that the MAO composite coating doped with ZIF-8 and ZnG@ZIF-8 ((ZIF-8 + ZnG@ZIF-8)/MAO) displayed optimal corrosion resistance. The corrosion current density ( j corr ) of the pristine (ZIF-8 + ZnG@ZIF-8)/MAO composite coating (3.38 nA cm −2 ) is 63.3 times lower than that of the blank MAO coating (214 nA cm −2 ), indicating the significant enhancement in corrosion protection of the nanoparticle to the coatings. Even after 32 days of immersion in a 3.5 wt.% NaCl solution, the j corr of the former was as low as 87.3 nA cm −2 , much lower than that of the blank MAO coating (1710 nA cm −2 ). These findings provide new insights into the design of corrosion-resistant MAO composite on magnesium alloy surfaces via the incorporation of inhibitor-loaded ZIF-8 nanocontainers.
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Sustainability
·
2025
·Vol. 17
·期 11
·5049
·
IF 3.3
Qi Wang,Guanghui Zhuo,Dongxin Xue,Guangcan Zhu,Chu-Ya Wang
Elevated phosphorus levels in aquatic ecosystems have been identified as a critical driver of eutrophication processes, necessitating resource-recovery remediation strategies. Adsorption techniques show particular promise for nutrient recovery due to their selective binding capacities and operational feasibility. In this study, the Mg- and Ca-modified biogas residue-based biochar (Ca-Mg/BC) was successfully prepared via a “bimetallic loading-pyrolysis” modification strategy. The optimum temperature for the calcination of the material and the salt solution impregnation concentrations were determined experimentally through optimization of the synthesis conditions. Structural and chemical analyses of Ca–Mg/BC demonstrated that the material contains MgO and CaO. The specific surface area of Ca–Mg/BC was 8.49 times higher than that of the unmodified biochar (BC). The optimized Ca–Mg/BC achieved 95% phosphate removal rate (157.13 mg/g adsorption capacity). FTIR and XPS characterization results indicated the importance of Ca/Mg loading in phosphate capture. MgO and CaO were mainly loaded on the surface of the material and adsorbed phosphate through a chemical reaction. Crucially, the phosphate-laden biochar exhibited potential as a nutrient-enriched soil amendment, opening the material loop from wastewater treatment to agricultural applications. This sustainable strategy simultaneously addresses water pollution control and sustainable development, providing environmentally benign solutions compatible with industrial effluent treatment and sustainable agriculture practices.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Shuai Ma,Qinghai Shu,Ting Zhang,Manman Wang,Haoming Zou,Xijuan Lv,Shuai Zhao
To optimize the energy release of boron (B), we originally prepared B@Mg composites via the electrical explosion of wires method. SEM-EDS, XPS, ATR-IR, and XRD results confirmed that nano-scale magnesium (Mg) particles adhere to the surface of B. The pressure cell results showed that with increasing Mg content, the peak pressure and pressurization rate initially increased and then decreased, peaking at B@9 %Mg with values of 40.28 kPa and 2350 kPa/s, which are 1.11 times and 2.41 times those of raw B, respectively. Laser ignition and combustion spectrum tests revealed that B@9 %Mg exhibited intense and complete energy release. The maximum flame height of the B@Mg/ammonium perchlorate (AP) mixture increases with higher Mg content due to synergistic effects within the B@Mg/AP system. The introduction of Mg promoted the shell-breaking of B@Mg composites, thus accelerating the ignition process. The co-combustion of Mg and B boosted the heat release, promoting AP decomposition. Small molecules from AP decomposition reduce particle agglomeration, enhancing combustion efficiency. Further transient reactivity evaluations on energetics with ammonium oxalate (AO) demonstrated that B@9 %Mg exhibited superior performance, with the fastest flame propagation speed, highest peak pressure, and pressurization rate, which are 2.10 times, 1.59 times, and 1.75 times those of raw B, respectively. Additionally, the high-temperature steam test results showed that B@9 %Mg had the highest pressurization rate of 25.47 MPa/s, 2.2 times that of raw B. Finally, SEM-EDS analysis of the combustion residue revealed that Mg alters the structural distribution of the residues. Different from the combustion products of raw B, Mg is uniformly distributed in the residues of B@9 %Mg, reducing the inhibition of B 2 O 3 on the combustion of B behavior and thus enhancing its energy release.
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产品关联
DOI
高影响因子
AICHE JOURNAL
·
2017
·Vol. 63
·期 11
·4911-4919
·
IF 2.836
Tengfang Wu,Gang Liu,Liang Zeng,Guodong Sun,Sai Chen,Rentao Mu,Sika Agbotse Gbonfoun,Zhi-Jian Zhao,Jinlong Gong
Supported VO x catalysts are promising nonoxidative propane dehydrogenation (PDH) materials for their commercially attractive activity and propylene selectivity. However, they frequently suffer from rapid deactivation caused by coke deposition. This article describes the promoting role of magnesium on the stability of VO x /Al 2 O 3 catalysts for PDH. A series of VO x /Al 2 O 3 and Mg-modified VO x /Al 2 O 3 catalysts were synthesized by an incipient wetness impregnation method. The catalysts were carefully characterized by Raman spectra, UV-Vis spectra, STEM, TGA and in situ DRIFTS. We showed that the stability of a 12V/Al 2 O 3 catalyst was significantly improved on addition of small amounts of MgO. Experimental evidences indicate that V 2 O 5 nanoparticles emerge in the 12V/Al 2 O 3 samples, and appropriate Mg addition helps dispersing the V 2 O 5 nanoparticles into 2D VO x species thus decreasing coke formation and improving stability in nonoxidative dehydrogenation of propane. © 2017 American Institute of Chemical Engineers AIChE J , 2017
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Scientific Reports
·
2017
·Vol. 7
·期 1
·1-11
·
IF 4.259
Wu Chuandong,Ma Kaka,Zhang Dalong,Wu Jialu,Xiong Shuya,Luo Guoqiang,Zhang Jian,Chen Fei,Shen Qiang,Zhang Lianmeng,Lavernia Enrique J.
To provide insight into precipitation phenomena in age-hardening Al-Zn-Mg(-Cu) matrix composites, an Al 7075 alloy composite reinforced with B 4 C particles was selected as a model system. The bulk composites were fabricated via plasma activated sintering and followed by a peak aged (T6) heat treatment. Two types of Al matrix zones were identified in the composite: (1) the regions in the vicinity of the matrix/reinforcement interface, defined as “matrix plastic zone” (MPZ) hereafter, and (2) the regions away from the matrix/reinforcement interface, simply defined as matrix hereafter. The precipitation behavior in the MPZ was characterized and compared to that in the matrix. The MPZ contained a high density of dislocations. The number density of GP zones in the MPZ is lower than that in the matrix while the average size of the GP zones in MPZ is coarser. In addition, semi-coherent platelet η′ precipitates were observed but only in the MPZ. The dislocations and the Al/B 4 C interfaces provide more heterogeneous nucleation sites for the η′ precipitates in the MPZ. The growth and coarsening of the η′ precipitates caused rapid depletion of Mg and Zn solute atoms in the MPZ.
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Desalination and Water Treatment
·
2024
·
IF 1
Wen-bin Li,Shu-ni Zhou,Hong-yan Deng,Abbas Touqeer
To explore the adsorption performance of antibiotics in different amphoteric clays loaded with magnesium (Mg) and dodecyl dimethyl betaine (BS) was used to modify bentonite (B), kaolin (K), and diatomite (D) to obtain different amphoteric clays (named as BS-B, BS-K, and BS-D, respectively). Then, Mg-loaded amphotropic clays (abbreviated as Mg-BS-B, Mg-BS-K, and Mg-BS-D, respectively) were obtained by loading Mg ions on BS-B, BS-K, and BS-D. The isothermal adsorption characteristics of tetracycline (TC), chlortetracycline (CTC), and oxytetracycline (OTC) were studied by batch treatment with B, K, and D as the controls, and the adsorption differences under different environmental factors (i.e., temperature, pH, and ionic strength) were compared. The results show that the following. (1) The TC, CTC, and OTC adsorptions of the tested samples were all suitable for Langmuir isothermal adsorption model, and the maximum adsorption capacities (q m ) were 1.70–5.21 mol/kg (TC), 1.80–5.94 mol/kg (CTC), and 1.81–6.28 mol/kg (OTC). Under the same modification conditions, the q m of TC, CTC, and OTC followed the order Mg-BS-B > Mg-BS-K > Mg-BS-D. (2) When the temperature changed from 25°C to 45°C, the adsorption amount of TC, CTC, and OTC on the tested samples increased, exhibiting a positive temperature effect. The thermodynamic parameters showed that the adsorption of TC, CTC, and OTC was spontaneous, endothermic, and entropic-_increasing processes. (3) In the pH range of 2–10, the adsorption amount of TC, CTC, and OTC on each soil sample increased first and then decreased and reached the peak value at pH = 6. With the increase of the ionic strength, the adsorption amount of the three antibiotics decreased, and the decrease ranges were 15.17%–84.17% (TC), 16.07%–68.07% (CTC) and 16.30%–76.54% (OTC).
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