INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2026
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IF 9.2
Jing-lan Huang,Bi-ying Huang,Xiao-dan Mei,Qi-yue Wang,Hai-zhen Liu,Cun-ke Huang,Xiao-ying Xie,Jin Guo
Addressing the bottlenecks of cold-welding, oxidation, and low refining efficiency of ductile magnesium powder in conventional ball milling, this study develops a novel heptane-assisted dielectric barrier discharge (DBD) wall-attached plasma ball milling (NPBM) process. High-purity 50–200 nm spherical Mg–TiO 2 composites were synthesized within only 1 h. Our findings reveal that the “Melting-Sputtering-Quenching (MSQ)” mechanism induced by NPBM is the primary driver for the rapid 100 nm-level spheroidization of Mg, while heptane serves as both a quenching medium and a chemical barrier to suppress thermal welding and side reactions. Kinetic investigations demonstrate that the composite achieves a hydrogen absorption capacity of 4.50 wt% at 175 °C, with a JMAK dehydrogenation activation energy as low as 92.6 kJ mol −1 . This work provides a promising strategy for the rapid synthesis of metastable light-metal hydrogen storage materials.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2022
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IF 6.371
Jianling Huang,ChengWei Liao,Hui Wang,YuJun Zhao,Liuzhang Ouyang,Jiangwen Liu,Min Zhu
Mg-based alloy anodes suffer from severe corrosion in conventional electrolytes (KOH solution) and this substantially obstructs the cycle life, which is a great challenge for using them in the Ni-MH battery. Herein, a high concentration tetramethylammonium hydroxide (TMAH) aqueous electrolyte with a special hydrate structure is explored and enables excellent cycle stability and high capacity for Mg-based alloy anodes. In this electrolyte, the Mg 0.4 Ti 0.1 Ni 0.5 alloy anode delivers a maximum discharge capacity of 466 mAh g −1 , and maintains 210 mAh g −1 after 100 cycles owing to the reduced corrosion rate , which are much better than that in 6 M KOH electrolyte, being 425 mAh g −1 and 69 mAh g −1 , respectively. Furthermore, by in-situ forming Cu coating on the Mg 0.4 Ti 0.1 Ni 0.5 electrode surface during charging process with the adding 0.01 M of Cu(OH) 2 in TMAH electrolyte, the corrosion of the electrode is further suppressed and the reversible capacity can reach 313 mAh g −1 after 100 cycles. The high conducting Cu coating can also increase the rate capability of the electrode by promoting the charge transfer. Thus, using TMAH electrolytes provides a new approach to promote the electrochemical performances of Ni-MH batteries with Mg-based alloy anodes.
研究领域:
材料科学
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电化学
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能源存储
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金属腐蚀与防护
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功能材料
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电池技术
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Journal of Water Process Engineering
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2026
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IF 6.6
Muhammad Yawar Younis,Tongyu Wei,Longtao Ren,Safdar Abbas,Wenting Li,Ying Kan,Abdul Hameed Pato,Yun Wei
Novel linker-based La-containing Mg-MOF synthesized for phosphate removal. • Hexagonal rod-like La-containing Mg-MOF provides abundant active adsorption sites. • Ultrahigh phosphate adsorption capacity (448.59 mg g −1 ) via Langmuir model. • La-containing Mg-MOF shows high stability and strong anion resistance. • DFT and polynomial regression-based study of phosphate adsorption. A porous hexagonal rod-like La-containing Mg-MOF was rationally designed and fabricated via a controlled hydrothermal route to achieve efficient phosphate removal from aqueous media. The introduction of La 3+ and Mg 2+ generated a La-containing Mg-MOF with enhanced surface reactivity and abundant adsorption sites. Structural and surface characterization using FTIR, SEM-EDS, BET, and XPS suggested the successful formation of the La-containing Mg-MOF, its mesoporous architecture, and effective integration of both metal sites. Adsorption experiments demonstrated high phosphate uptake, strong selectivity, and stable performance over a broad pH range and in the presence of competing anions. Kinetic analysis indicated that the adsorption process followed pseudo second-order behavior, suggesting surface site-controlled adsorption. Thermodynamic evaluation revealed that phosphate adsorption was spontaneous, endothermic, and entropy-driven. Isotherm modeling showed excellent agreement with the Langmuir model, yielding adsorption capacity of 448.59 mg g −1 . Mechanistic insights derived from density functional theory calculation, FTIR and XPS analyses revealed that phosphate removal occurred through a synergistic combination of outer sphere electrostatic interactions and inner-sphere complexation involving ligand exchange and coordination with La-containing active sites. Furthermore, polynomial regression fitting models were applied to investigate the quantitative relationships between phosphate adsorption capacity and experimental parameters such as pH, initial concentration, contact time, adsorbent dosage, and solution volume, achieving R 2 values above 0.98. These results demonstrate La-containing Mg-MOF are highly promising candidates as next-generation adsorbents for efficient phosphate removal in water treatment systems. Download: Download high-res image (196KB) Download: Download full-size image
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CHEMOSPHERE
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2023
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IF 8.8
Hai Liang,Wanting Wang,Haiyan Liu,Xinzhong Deng,Dan Zhang,Yuxuan Zou,Xuehua Ruan
Engineering magnesium oxide (MgO)-modified biochar (MgO-biochar) with high porosity and active MgO load is a feasible pathway to enhance phosphate adsorption capacity. However, the blockage to pores caused by MgO particles is ubiquitous during the preparation, which seriously impaired the enhancement in adsorption performance. In this research, with the intent to enhance phosphate adsorption, an in-situ activation method based on Mg(NO 3 ) 2 -activated pyrolysis technology was developed to fabricate MgO-biochar adsorbents with abundant fine pores and active sites simultaneously. The SEM image revealed that the tailor-made adsorbent has well-developed porous structure and abundant fluffy MgO active sites. Its maximum phosphate adsorption capacity was coming up to 1809 mg/g. The phosphate adsorption isotherms are in accordance well with the Langmuir model. The kinetic data, which agreed with the pseudo-second-order model, indicated that chemical interaction is existing between phosphate and MgO active sites. This work verified that the phosphate adsorption mechanism on MgO-biochar was composed of protonation, electrostatic attraction, monodentate complexation and bidentate complexation. In general, the facile in-situ activation method using Mg(NO 3 ) 2 pyrolysis illuminated biochar activation with fine pores and highly efficient adsorption sites for efficient wastewater treatment .
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Journal of Cleaner Production
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2023
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IF 11.1
Zhipan Wen,Shen Li,Ge Zhang,Runqiao Chen,Yalei Zhang,Xiaoping Liao,Gang Cheng,Rong Chen
Magnetic hollow Fe 3 O 4 -based Mg/Al layered double hydroxide (Fe 3 O 4 @SiO 2 @LDH) was successfully synthesized and subsequently the laboratory scale tests were conducted to systematically investigate the sequestration of roxarsone (ROX) and arsenate (As(V)). Owing to its abundant surface metal hydroxyl (M-OH) groups and exchangeable CO 3 2− groups in the interlayer of MgAl-LDH nanosheets , the obtained Fe 3 O 4 @SiO 2 @LDH exhibited remarkable behavior for As(V) and ROX removal. Both As(V) and ROX could be effectively immobilized at a relatively wide pH range (3–8), and the maximum adsorption capacities of As(V) and ROX were 96.47 and 71.67 mg/g, respectively. Meanwhile, the negligible mutual effect demonstrated the Fe 3 O 4 @SiO 2 @LDH can simultaneously remove inorganic and organic arsenic compounds . The competitive cations/anions (except for PO 4 3− ions) and ionic strength were negligible on As(V) and ROX removal, whereas the inhibitory effect stem from humic acid (HA) seemed to be more seriously for As(V) than that of ROX. Adsorption mechanism of As(V)/ROX were attributed to electrostatic attraction and ion/ligand exchange process, whereas hydrogen bonding and π-π interaction may also involve in the ROX removal. Furthermore, the excellent performance in fix-bed column tests and prominent reusability indicated this magnetic Fe 3 O 4 @SiO 2 @LDH was a promising candidate adsorbent and of great potential application in organic/inorganic As-contamination wastewater treatment .
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PROGRESS IN ORGANIC COATINGS
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2022
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IF 6.206
Changhua Li,Yi He,Yang Zhao,Zhijun Li,Dan Sun,Hongjie Li,Wen Chen,Jing Yan,Guiyang Wu,Xi Yuan
Epoxy composite coating with active corrosion inhibition property was prepared through cathodic electrophoretic deposition with the incorporation of Ti 3 C 2 Tx@Mg-Al layered double hydroxides (LDH) hybrid material . Hydrothermal method was adopted to synthesize molybdate (MoO 4 2− )-intercalated Mg Al LDH, which was self-assembled on the surface of Ti 3 C 2 Tx MXene through electrostatic interaction to improve the zeta potential of the Ti 3 C 2 Tx surface to positive value. Fourier transform infrared spectroscopy , X-ray diffraction, transmission electron microscope, scanning electron microscope, X-ray photoelectron spectroscopy, zeta (ζ) potentials test and uv-vis spectroscopic analysis results showed that Mg Al LDH and Ti 3 C 2 Tx@Mg-Al LDH were successfully prepared and Ti 3 C 2 Tx@Mg-Al LDH had ion exchange property. The prepared LDH and Ti 3 C 2 Tx@Mg-Al LDH were added to electrophoretic paint as anti-corrosive additives. After deposition process of 150 V for 2 min on the P110 steel surface, composite coatings had thicknesses of ~110 μm. Electrophoretic deposition has advantages in controlling coating thickness than traditional spray method. Moreover, Ti 3 C 2 Tx@Mg-Al LDH additive endowed composite coating with active corrosion inhibition capacity through ions exchange property between corrosive medium Cl − and MoO 4 2− in the Mg Al LDH interlayer. Electrochemical impedance spectroscopy (EIS) test results showed that Ti 3 C 2 Tx@Mg-Al LDH/epoxy coating exhibited outstanding corrosion protection property. This research provides a new way of using Ti 3 C 2 Tx MXene in the cathodic electrophoretic paint to prepare active anti-corrosive coating.
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MATERIALS & DESIGN
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2022
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IF 9.417
Yanqing Xue,Qitang Hao,Xinlei Li,Han Zhang,Peiqing Wang,Chengze Yin,Bo Li,Xinliang Wang
The strength-ductility trade-off severely limits the extensive application of particle-reinforced aluminum matrix composites mainly owing to the critical issues of local particle agglomeration and poor interfacial characteristics. The present work concentrates on these intractable puzzles and proposes Mg-Ag microalloying TiB 2 /Al-4.5Cu composites fabricated by an optimized salt-metal reaction method and multistage heat treatment. The resulting microstructure evidence that this new tactic synergistically ameliorates the detrimental agglomeration of TiB 2 particles by Mg and Ag doped at the TiB 2 /α-Al interface， meanwhile promoting the formation of nanosized Ω-Al 2 Cu and σ-Al 5 Cu 6 Mg 2 phases. The mechanical property experimental results indicate that the Mg-Ag microalloyed TiB 2 /Al-4.5Cu composites exhibit an accredited combination of the tensile strength (ultimate tensile strength is 496.3 ± 15.0 MPa) and ductility (uniform elongation is 12.8 ± 1.4 %). We emphasize the reciprocal effect between TiB 2 particles and the precipitated phase associated with unrelaxed misfit strains. Close attention is also paid to the interface binding characteristics and semi-coherent interphase boundary to evaluate their contribution to the ductility. The microalloying strategy can potentially be applied to many other metal matrix composites and boost analogous approaches for designing ultrahigh yet ductile materials for technological applications.
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RARE METALS
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2022
·Vol. 41
·期 8
·2745-2758
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IF 6.318
Li Pu-Bo,Wang Yong-Xun,Shao Ze-Xi,Wu Bin-Tao,Li Heng,Gao Mang-Mang,Liu Kuan-Guan,Shi Ke-Ren
The Mg–Al layered double hydroxide (LDH) conversion coatings were first synthesized in situ to modify the AZ91D alloy through urea hydrolysis to adjust the pH values (9.4, 10.4, 11.2 and 11.4). The pH 11.2 Mg–Al LDH possessed the best compactness and good crystallinity compared to other in situ LDH coatings and obtained the lowest corrosion current density ( i corr ) of (2.884 × 10 −6 ± 0.345 × 10 −6 ) A·cm −2 , which was attributed to the anion-exchange reaction of LDH and the physical barrier against corrosion owing to the twisted penetration pathway of the interlaced LDH sheets. Core–shell structured Zn–Al LDH@ZIF-8 powder modified with stearic acid (SA) was further wrapped with polyvinylidene fluoride (PVDF) to prepare a hydrophobic double-layered coating on the underlying pH 11.2 Mg–Al LDH (SLLZ). The water contact angle (CA) of the SLLZ coating reached 105.6°, and its i corr decreased to (3.524 × 10 −7 ± 0.214 × 10 −7 ) A·cm −2 compared with a single pH 11.2 film. The SLLZ coating exhibited high durability and corrosion protection, even after 15 days of immersion in NaCl solution. The PVDF, SA and ZIF-8 nano-shells contributed to good hydrophobicity, effectively forming a physical barrier. The Zn–Al LDH core and underlying in situ Mg–Al LDH were beneficial for synergistically promoting anion-exchange reaction between the intercalated anions of LDH and chlorides in corrosive media. This work provides a promising approach that combines core–shell LDH@ZIF-8 with LDH film on a Mg alloy surface to construct a hydrophobic film with excellent long-term anti-corrosion performance. Graphical abstract
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Materials Science & Engineering C-Materials for Biological Applications
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2021
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IF 7.328
Shan Zhang,Ruiqi Liang,Kun Xu,Shurong Zheng,Somnath Mukherjee,Peng Liu,Changhao Wang,Yashao Chen
In recent years, magnesium alloys (MgA) have been reckoned as the most promising material of biomedical importance on account of its excellent degradable properties and mechanical properties mimicking natural bone tissues. However, MgA are prone to rapid corrosion under physiological conditions, causing toxicity around the neighboring tissues. In addition, they are susceptible to bacterial colonization, a detrimental factor for medical causes. In this study, antibacterial material coated hydrogel-based micro-patterns were developed on MgA to achieve long-term antibacterial, antifouling, osteogenic, and cell-compatible properties. First, the Mg(OH) 2 nanosheet coating was prepared on the surface of MgA as a physical barrier to prevent the corrosion of MgA. Then the hydrogel micropatterns of poly(alendronate sodium methacrylate)/poly(dimethyldiallylammonium chloride)/poly(ethylene glycol) diacrylate (PALNMA/PDADMAC/PEGDA) of different sizes were constructed on the surface of the Mg(OH) 2 coating using the photomask method. Finally, an intelligently responsive antibacterial material hyaluronic acid/berberine (HA/BBR) was coated on MgA-Mg(OH) 2 -PALNMA/PDADMAC/PEGDA patterns via layer-by-layer self-assembly. The excellent antifouling performance of the samples is attributed to the topological structure of the pattern. Interestingly, as the pattern size of PALNMA/PDADMAC/PEGDA decreases, the antibacterial, antifouling, and cell compatibility properties of the samples gradually improve. UV–Vis spectra and bacterial plate count indicate that HA/BBR coating provide a pH and hyaluronidase (HAase) dual-responsive surface to kill the attached bacteria quickly. Finally, the in vitro experiments demonstrate excellent blood compatibility, cell compatibility and osteogenic properties of the modified MgA samples. Therefore, the intelligent multifunctional assembly of MgA presented here has a promising future in the field of metal implant materials.
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APPLIED SURFACE SCIENCE
·
2023
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IF 6.7
Gengzhe Shen,Jing Kong,Yuqing Fei,Lin Xu,Liuyan Zhang,Xiaohua Jie,De Ning,Zhengjian Chen
In this work, layered double hydroxide (LDH) and reduced graphene oxide (rGO) were incorporated into Zn/Ni matrix coating by cold-spraying on the surface of Mg alloys. Inside the resulting GLG@Zn/Ni coating, LDH/rGO are homogeneously dispersed and inner-connected to a protective network. Compared with other coatings without LDH or rGO nanosheets, the GLG@Zn/Ni coating shows the best corrosion resistance, with a high self-corrosion potential at − 1.174 V (vs. − 1.471 V for Mg), a decent self-corrosion current density of 344.7 μA·cm −2 (vs. 878.3 μA·cm −2 for Mg), and the longest available protection (>720 h) against corrosion. Electrochemical and morphological characterizations reveal a synergistic effect of the coating compositions in enhancing corrosion resistance. In detail, the LDH/rGO network inside the coating restricts the penetration of the corrosive medium, particularly for LDH, which has the capacity to capture corrosive Cl − ions. Meanwhile, Ni promotes the conversion of Zn into passivation layers, which then spread to fill the corrosion pores and interphase cracks. This transformation ultimately leads the GLG@Zn/Ni coating to become a unified whole, providing excellent corrosion resistance.
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ACS Applied Materials & Interfaces
·
2020
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IF 8.758
Rui Yang,Fan Zhang,Xin Lei,Yongping Zheng,Guohua Zhao,Yongbing Tang,Chun-Sing Lee
Magnesium-ion batteries (MIBs) have received increasing attention for next-generation energy storage recently because of the natural abundance, high capacity, and dendrite-free deposition of Mg. However, their applications are hindered by irreversible Mg anode plating in conventional electrolytes and the lack of cathode materials, demonstrating high working voltage, satisfactory Mg2+ diffusivity, and long cycling life. In this work, we first developed a novel magnesium-ion based dual-ion battery (Mg-DIB) by utilizing expanded graphite as the cathode and Ti-doped niobium pentoxide nanoflakes (Ti–Nb2O5 NFs) as the anode. The Ti–Nb2O5 NFs showed hierarchical structures of microspheres with diameters of 4–5 μm assembled by nanoflakes. For the first time, the Mg-ion storage mechanism in Ti–Nb2O5 NFs was investigated. Benefiting from the hierarchical structure design and pseudocapacitive intercalation behavior of Mg ions, the Ti–Nb2O5 NF anode exhibited fast Mg-ion diffusion. Consequently, the Mg-DIB exhibited a high discharge capacity of 93 mA h g–1 at 1 C (1 C corresponding to 100 mA g–1), along with good long-term cycling performance with a capacity retention of 79% at 3 C after 500 cycles. The Mg-DIB also demonstrated a capacity retention of 77% at 5C, indicating its good rate performance. Moreover, the Mg-DIB exhibited a high discharge medium voltage of ∼1.83 V, thus enabling a high energy density of 174 W h kg–1 at 183 W kg–1 and 122 W h kg–1 at a high power density of 845 W kg–1, among the best of the reported magnesium-ion full batteries. Our work provides a new strategy to improve the performance of MIBs and other rechargeable batteries.
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Journal of Physical Chemistry C
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2020
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IF 4.189
Lishuang Wang,Jie Lin,Xingyuan Liu,Sheng Cao,Yunjun Wang,Jialong Zhao,Bingsuo Zou
Because of the wide emission spectrum tunability that ranges from the visible region to the near-infrared, InP-based colloidal quantum dots (QDs) show great promise for use in the next-generation full-color displays and solid-state lighting. The performance-improved InP QD-based light-emitting devices (QLEDs) were fabricated by using Mg-doped ZnO nanoparticles (ZnMgO NPs) as an interlayer between the ZnO electron transport layer and active InP QD layer. It is found that ZnMgO NPs can reduce electron injection and suppress exciton quenching, which are attributed to the improvement of charge balance in the devices. We successfully demonstrated higher maximum current efficiencies of 5.46 and 5.91 cd/A than the references (2.31 and 2.36 cd/A) without the ZnMgO NP layer in highly efficient red and green QLEDs, respectively. These results signify an effective approach to improve heavy-metal-free QLEDs for commercial applications.
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