LANGMUIR
·
2025
·
IF 3.9
Xiaoming Yu,Meiling Zhang
This study introduces a robust, self-healing superhydrophobic coating for magnesium (Mg) substrates, leveraging the synergistic effects of MQ organosilicon polymer, octadecylamine (ODA), polydopamine (PDA), and copper-loaded graphene oxide (GO). The coating exhibits exceptional superhydrophobicity, outstanding stability in harsh environments, superior resistance to smudging, and effective self-cleaning capabilities. Electrochemical impedance spectroscopy (EIS) in 3.5 wt % NaCl solution demonstrates an impedance modulus (|Z|) at f = 0.01 Hz and polarization resistance (Rp) of 3.49 × 108 Ω cm2 and 3.88 × 108 Ω cm2, respectively, 7 orders of magnitude higher than AZ31B. After 35 days of immersion, |Z|f=0.01 Hz and Rp remain at 3.97 × 107 Ω cm2 and 4.63 × 107 Ω cm2, respectively, highlighting long-term corrosion protection. In cases of damage or corrosion, the dynamic coordination of PDA-Cu2+ enables self-healing, fully recovering visible coating defect up to 10 μm in width within 24 h in 3.5 wt % NaCl solution. This work presents a promising approach for durable, self-healing superhydrophobic coatings with exceptional mechanical and chemical stability.
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PubMed
高影响因子
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
·
2020
·Vol. 20
·期 8
·4778-4786
·
IF 1.134
Qin Lilu,Huang Jiamu,Hao Longlong,Su Jun,Ma Niu,Yin Lingyi
To improve corrosion performance of coatings on AZ31B magnesium alloy, the nano-CeO2 additives were included in Na2SiO3 based electrolyte during process of pulse micro arc oxidation (MAO). The MAO-CeO2 coating was successfully prepared to
characterize its structure, micro morphology and composition. The XRD results indicated that MAO-CeO2 coatings were consisted of Mg2SiO4, MgSiO3, MgF2 and CeO2. The intensity of CeO2 peaks increases with increasing
nano-CeO2 particles in electrolyte. The number of cracks on MAO-CeO2 coatings exhibited a V-shaped trend with increase in nano-CeO2 content. Meanwhile, the influence of nano-CeO2 on corrosion behavior of MAO-CeO2 coatings is investigated
by salt spray test and electrochemical measurement. The corrosion current density of coatings presented same trend and corrosion potential is further studied. The MAO-CeO2 coatings formed in electrolyte with 10 g/L nano-CeO2 showed best corrosion performance which has
the lowest corrosion current density of 0.58 nA/cm2 and the highest corrosion potential of - 1269 mVSCE.
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Zhenwei Lu,Keqiang Zhang,Fuyuan Liu,Xingliang Gao,Zhongwei Zhai,Jiajia Li,Lianzhu Du
Currently, the closure of the nutrient circular loop and contaminant removal from wastewater are drawing widespread attention. In this study, a novel MgO/iron oxide-modified NaY zeolite (MNZ) was prepared and used for the integration of adsorption and struvite precipitation to simultaneously reclaim ammonium and phosphate from wastewater. The results proved that MgO and iron oxide nanoparticles were successfully embedded in the zeolite matrix, providing high adsorption performance for ammonium and phosphate, reaching 380.02 (as NH + 4) and 324.68 (as P T ) mg/g, respectively. The presence of NO 3 − , Cl − , SO 4 2− , and HCO 3 − did not significantly influence the adsorption of ammonium and phosphate. Struvite precipitation on the MNZ surface is the primary mechanism for the recovery of both ammonium and phosphate with electrostatic attraction and ion exchange also involved in ammonium uptake. These results indicate that optimized MNZ is promising for nutrient recovery from wastewater because of its high selectivity for targeted absorbates and its potential application as a slow-release eco-fertilizer.
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高影响因子
CERAMICS INTERNATIONAL
·
2020
·
IF 3.83
Mingyang Yu,Ying Tang,Jie Li,Weishuang Fang,Lian Duan,Liang Fang
Two novel ATeMoO 6 (A = Mg, Zn) ceramics with ultra-low sintering temperature were fabricated through traditional solid-state reaction. Both ceramics have an orthorhombic structure in space group P 2 1 2 1 2, which was indicated by X-ray diffraction. The crystal structure, sintering characteristics, microstructure and microwave dielectric properties were discussed. MgTeMoO 6 ceramic sintered at the ultra-low temperature of 660 °C for 6 h achieved excellent microwave dielectric properties with ε r = 11.93, Q × f = 34,453 GHz and τ f = – 82 ppm/°C, whereas ZnTeMoO 6 had the corresponding performances of ε r = 12.39, Q × f = 29,153 GHz and τ f = – 87 ppm/°C at 650 °C for 6 h. The good chemical stability with Al indicates that ATeMoO 6 (A = Mg, Zn) ceramics may be potential candidates for ultra-low temperature co-fired ceramic technology (ULTCC) applications.
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高影响因子
CHEMOSPHERE
·
2022
·
IF 8.943
Qian Zhong,Jin Liu,Junting Wang,Yuan Li,Jun Li,Gaoke Zhang
To activate peroxymonosulfate (PMS) is an efficient way for decomposition of non-biodegradable organic pollutants. Herein, Mg–Fe layered double oxides decorated with Ti 3 C 2 MXene-derived TiO 2 @C (T/LDOs) were fabricated to efficiently activate PMS for the degradation of Rhodamine B (RhB), acid red 1 (AR1), methylene blue (MB), and tetracycline hydrochloride (TC). The T/LDOs catalyst could decompose 95.8% of RhB, 94.8% of AR1, 84.9% of MB within 10 min, and 82.4% of TC within 60 min. The degradation rate constant of RhB in the optimal T/LDOs/PMS system was approximately 2.5 and 15.7 times higher than that in the Mg–Fe LDOs/PMS system and Mg–Fe LDH/PMS system, respectively. Importantly, the T/LDOs exhibited a wide working pH range (3.1–11.0) and high stability with low metal ions leaching, indicating its potential practical applications. Quenching experiments and electronic spin resonance results confirmed that both • O 2 − and 1 O 2 were the dominant active species in the T/LDOs/PMS system. In addition, the possible degradation pathway of RhB in the 5%-T/LDOs/PMS system was proposed. Finally, the catalytic mechanism study revealed that the T/LDOs with abundant surface hydroxyl groups and a certain amount of TiO 2 @C facilitated the electron transfer between ≡Fe (Ⅲ) ‒OH complex and HSO 5 − , boosting the generation of • O 2 − and 1 O 2 . This study provides an insight into exploiting highly efficient catalysts for PMS activation towards the degradation of organic pollutants.
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PubMed
高影响因子
Green Energy & Environment
·
2020
·
IF 6.395
Jiajun Liu,Kui Wu,Zhengke Li,Wensong Li,Yuqing Ning,Weiyan Wang,Yunquan Yang
The great challenge in the aldol condensation of tailored fermentation products (acetone–butanol–ethanol, ABE) into energy intensive fuels is to develop a suitable catalyst with high activity and low–cost. In this study, Co, Ni, and Co–Ni supported on Mg–Al oxide catalysts were prepared and their pore diameters were enlarged via adding active carbon as a hard template into Mg–Al hydrotalcite. During the aldol condensation reaction, the catalyst activity was enhanced after enlarging the pore diameter and Co–Ni bimetal supported catalyst presented the highest activity, which was resulted from that the electron transfer between Co and Ni in Co–Ni alloy enhanced the dehydrogenation activity and large pore lowered the mass transfer resistance. After optimizing the reaction conditions, acetone conversion and the total selectivity of C 5 –C 11 desired products in the aldol condensation of ABE reached up to 76% and 90%, respectively. The stability study showed that the activity was decreased with the increase of reaction number because of the oxidation of metallic Co and Ni, but this could be solved via a simple hydrogen reduction method.
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高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2025
·
IF 3.9
Du Haoming,Wu Shenghao,Zhao Yuxuan
In this study, a series of non-equimolar ratio high-entropy rock-salt-type oxides (Mg, Co, Ni, Cu, Zn)O were prepared a high-temperature solid-phase method with tailored cation ratios, and their physical phase compositions and electrochemical properties were investigated. The result shows that (Mg, Co, Ni, Cu, Zn)O with varying elemental ratios form single-phase rock-salt structures when they are sintered at 1100°C under non-equimolar conditions. These oxides display a uniformly elemental distribution and irregular spherical particle morphology. With the increase in Ni or Co content, the electrochemical performance is significantly improved. Compared to the other six high-entropy oxides, (Mg0.1625, Co0.1625, Ni0.35, Cu0.1625, Zn0.1625)O powders have demonstrated excellent energy storage properties and rate capability, achieving a specific capacitance of 384.3 F/g at 1 A/g and a coulombic efficiency of 88.9%. These results demonstrate that non-equimolar (Mg, Co, Ni, Cu, Zn)O high-entropy rock-salt-type oxides have promising potential as advanced electrode materials. Graphical
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2021
·
IF 7.312
Rujie Li,Wanhang Wang,Yangyang Wang,Xiaoyu Wei,Ziqi Cai,Zhiyong Zhou
A novel ionic liquid named 1-butyl-3-methylimidazolium tetraphenylboron ([Bmim]Bph 4 ) containing a stereo symmetric structure of Bph 4 - was synthesized and used as co-extractants with TBP and CH 2 BrCl as extractant and diluent for selective extraction of lithium ions from salt lake brines with high molar ratio of magnesium to lithium. The effects of extraction conditions containing molar ratio of co-extractant to lithium ion, volume percentage of TBP and O/A phase ratio on extraction performance were investigated. Under the optimal extraction conditions, the maximum separation factor of lithium to magnesium reached up to 2754 after one single-stage extraction process. After four stages of counter-current extraction process, the extraction efficiency of Li + reached up to 99.47%. Then the washing and stripping conditions were optimized with the combination of LiCl and NaCl solution as the washing agent and Na 2 CO 3 solution as the stripping agent. After that, 10 cycles of the whole extraction experiments were carried out and the organic phase exhibited excellent reusability and stability. Since no acid and alkaline were used throughout the extraction process, the novel extraction process is greener and more environmentally friendly than the traditional solvent extraction process.
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高影响因子
Materials Today Energy
·
2024
·
IF 9
Dingan Cai,Yinda Li,Yunhao Lu,Bo Xu,Jicheng Jiang,Aijun Zhou,Xiongwen Xu,Jian Tu,Shengming Yu,Bin Pan,Xinbing Zhao,Jian Xie
As one of the most promising sodium-ion battery cathodes, O3-type transition metal (TM) layered oxides (Na x TMO 2 ) with a high specific capacity and operating voltage have received a wide attention. However, they still face the problems of slow Na + transfer kinetics and undesirable phase transitions, and suffer from severe structural degradation when stored in a humid atmosphere. In this work, we propose a Mg/Cu co-doping strategy to synthesize NaLi 0.04 (Mg 0.02 Cu 0.04 Ni 0.19 Fe 0.33 Mn 0.42 ) 0.96 O 2 (LMCNFM) cathode. In this material, Mg serves to stabilize the layer structure and improve reversibility of the phase transitions, while Cu with Cu 2+ /Cu 3+ redox reaction contributes to capacity and enhances moisture stability. Mg/Cu co-doping can expand the Na + transfer channels, leading to improved rate performance. LMCNFM can deliver a specific capacity of 109.1 mAh g −1 even at 10 C rate. Mg/Cu co-doping can stabilize the TM layer and reduce the surface side reactions with electrolyte. LMCNFM can maintain 92.7 % of its initial capacity after 200 cycles at 5 C rate. Furthermore, spontaneous extraction of Na + when exposed to water is suppressed via Mg/Cu co-doping. After being soaked in water for 6 h, LMCNFM shows a minor structural degradation with 88.7 % capacity retained after 200 cycles at 1 C.
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高影响因子
Materials Research Express
·
2021
·Vol. 8
·期 5
·056519
·
IF 1.62
Yanqing Xue,Qitang Hao,Bo Li,Xinliang Wang,Chengze Yin,Han Zhang
To surmount the longstanding puzzle of strength-ductility trade-off, efforts had been made to apply Mg - Ag microalloying on 5%TiB2/Al-4.5%Cu composites by in situ molten salt reaction and subsequent heat treatment. The obtained composites achieve an eye-catching tensile elongation (δ) of 6.1 ± 0.4%, while maintaining elevated ultimate tensile strength (UTS) of 497 ± 4 MPa and yield strength (YS) of 401 ± 3MPa. Comprehensive characterization demonstrated that the uniformly distributed TiB2 particles together with semi-coherent grain boundaries between the α-Al matrix and reinforcement phase (TiB2 particles, Ω-Al2Cu, σ-Al5Cu6Mg2) facilitated the dislocation motion integrally, which eliminated the stress concentrations, may be the main reason for amelioration in the strength-ductility trade-off of the composites when subject to rigorous multi-step heat treatment.
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高影响因子
Journal of Magnesium and Alloys
·
2025
·
IF 13.8
Fanfan Liu,Xiaomeng Fan,Xinyue Gao,Jinjin Ban,Guoqin Cao,Shilin Zhang,Junhua Hu
Rechargeable Mg/Li hybrid ion batteries with Mg 2+ /Li + double-salt electrolytes and safe Mg anodes are a viable option for large-scale energy storage. Nevertheless, achieving the desired reasonable electrochemical performance remains a great challenge due to the capacity limitations of conventional Li-intercalation cathodes. To mitigate this limitation, the 3D oxygenated MXene Ti 3 C 2 @CoS 2 /FeS 2 (denoted as o-Ti 3 C 2 @CoS 2 , o-Ti 3 C 2 @FeS 2 ) with both dual-storage mechanism and multidimensional structure to achieve the desirable storage capacity is engineered. Benefiting from the formation of special structure and interfacial chemical bonds Ti–O–Co/Ti–O–Fe, as well as the electronegative o-Ti 3 C 2 weaken the Co–S/Fe–S bonds, the o-Ti 3 C 2 @CoS 2 cathode exhibits superior capacity up to 425 mAh g −1 at 100 mA g −1 and overwhelming advantageous ultra-long life over 2,400 cycles at 500 mA g −1 . Simultaneously, the o-Ti 3 C 2 @FeS 2 also displays a high-rate capability, outstanding cycling stability, and fast diffusion kinetics. Furthermore, the conversion reaction of Mg 2+ /Li + co-intercalation and the charge storage mechanism during cycling are thoroughly clarified by systematic ex-situ characterizations and theoretical computations. This study reveals the influence of MXene electrode structure on the importance of electrochemical performance and provides guidance for the future design of high-performance MXene materials for energy storage applications.
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高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2025
·
IF 14.3
Kang Wang,Zexin Liu,Lin Liu,Tiantian Wang,Kun Chen,Runhua Yao,Ruiqiang Hang,Xiaohong Yao
Zinc-based materials have been extensively researched as biodegradable bone repair materials in recent years, but their low degradation rate and limited bioactivity need to be further improved. In this study, a new-type dual-sized macro-micro porous Zinc-Magnesium-β-tricalcium phosphate (DMMP Zn-Mg-β-TCP) scaffolds were designed and fabricated by vacuum heating-press sintering. The mechanical properties, degradation behaviors, in vitro biocompatibility, in vivo osteogenesis, and biological safety of the scaffolds were systematically evaluated. The results show that DMMP Zn-Mg-β-TCP has suitable mechanical properties, degradation properties, and excellent osteogenic properties. The compressive yield strength range of the scaffolds is 12.90–25.46 MPa, and the elastic modulus range is 0.31–0.44 GPa, meeting the mechanical properties required for implant materials in cancellous bone. In vitro degradation tests showed that the corrosion rate of the scaffolds ranges from 2.25 to 2.61 mm/y. Furthermore, the scaffolds exhibited excellent in vitro cell compatibility. After a 24-week animal experiment, the scaffold demonstrated excellent osteogenic capacity during bone healing, while maintaining biomechanical stability throughout its degradation process. In summary, the DMMP Zn-Mg-β-TCP has the potential to become a novel biodegradable bone implant material.
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