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.
研究领域:
环境科学
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材料科学
·
农业资源利用
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DOI
高影响因子
SURFACE & COATINGS TECHNOLOGY
·
2025
·
IF 6.1
Baolin Xu,Zhenzong Shao,Yong Wang,Rong Xu,Chenkai Zhu,Libin Lu,Linguo Li,Jiaru Zhang,Xiaochuan Wu,Chi Zhang,Qianli Gao,Bin Yu,Baiwen Hu,Dongdong Xia
Magnesium (Mg) alloys are ideal candidates for biodegradable orthopedic implants, whereas the clinical utility is hindered due to excessive corrosion behavior. In this study, the novel hierarchical coating was designed for AZ31 Mg alloy to control corrosion and improve bioactivity. The process involved laser texturing treatment of the Mg substrate, followed by hierarchical coating where the bioactive glass coating (BC) as sublayer and BG-polyvinyl alcohol hydrogel composite (HC) as upper layer. The morphology, structure, interfacial properties and corrosion behavior of Mg specimens with coating treatment were investigated via SEM, EDS, XRD, XPS and electrochemical test. The cytocompatibility and osteoinductivity of MC3T3-E1 cells seeded on Mg specimens was investigated in vitro cell proliferation assay. The results of study demonstrated the mechanically interlocked interface could be created by laser texturing, thus significantly improving coating adhesion. With further coating treatment, the BC layer within crystalline phase could act as stable corrosion barrier, to reduce mass loss of Mg alloy immersed in simulated body fluid (SBF). Based on this, the HC coating was observed to effectively seal pores of BC layer as dense upper layer for hierarchical design (MgL-HC@BC), thus resulting in exceptional corrosion resistance and ability to maintain the pH in the physiological range, and consequently promoting cell adhesion with osteogenic differentiation. As such, this work presented a feasible and highly effective strategy for fabricating advanced bio-functional surfaces on biodegradable magnesium implants.
研究领域:
生物医学工程
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材料科学
·
表面工程
·
腐蚀科学
·
组织工程
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产品关联
DOI
高影响因子
Advanced Energy Materials
·
2025
·Vol. 15
·期 38
·e03481
·
IF 26
Minhui Yuan,Zhen Tong,Qing Cao,Wenjie Li,Min Ruan,Jiahao Jiang,Jingyi Lyu,Yanglong Hou,Ran He,Jing Shuai
N -type Mg 3 (Sb,Bi) 2 system has emerged as a groundbreaking thermoelectric (TE) material, renowned for its optimized electronic transport properties and intrinsically low lattice thermal conductivity (κ l ). However, the origin of anomalously low κ l and its weak temperature scaling (κ l ∼ T −0.5 , deviating from the classical T −1 behavior) remain elusive. Employing a theoretical framework that integrates ab initio anharmonic lattice dynamics into a unified heat transport theory accounting for particle-like propagation (κ p ) and wave-like coherent (κ c ) transport, phonon renormalization, and fourth-order anharmonic phonon scattering, the thermal transport property of Mg 3 Bi 2 is comprehensively investigated. It is found that the weakly bonded interlayer cation Mg atoms amplify phonon coherence through dynamic disorder, driving wave-like transport contributes ≈40% to κ l at 600 K, while four-phonon scattering significantly suppresses particle-like propagation (>40% reduction). The theoretical predictions of both the magnitude and temperature-dependent behavior of κ l in Mg 3 Bi 2 exhibit synergistic agreement with in-house and reported experimental values. This work pioneers key insights into the Mg cation sublattice tuning the particle-wave duality in phonon transport, its strong anharmonic potential disrupts phonon phase coherence while enhancing four-phonon scattering, collectively driving the low κ l in Mg 3 Bi 2 . This discovery provides two actionable design strategies—cation site engineering and coherent phonon tuning—for developing high- zT Mg 3 Bi 2 -based thermoelectrics.
研究领域:
材料科学
·
热电学
·
凝聚态物理
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声子输运
·
计算材料物理
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Haiqiang Bai,Biao Liu,Ling Kang,Yanhong Wang,Jing Bai,Santosh Kumar Verma,Yunhua Xu
The ability of magnesium-based hydrogen storage materials to store and release hydrogen is hampered by their relatively slow rates. To address this, Mg-x% Co (x = 5, 10, 15) magnesium-rich hydrogen storage alloys were fabricated using reactive ball milling. The resulting alloys were multiphase, composed of Mg, Co, MgCo₂, and Mg₂CoH₅, which provided nucleation sites and improved hydrogen uptake. The reduced particle size and surface microcracks and pores enhanced hydrogen diffusion. The Mg-15 %Co alloy had the ability to take in 4.72 wt% hydrogen in 1 min when the temperature was set at 350°C. Hydrogenation resulted in the formation of a biphasic structure composed of Mg₂CoH₅ and Mg₆Co₂H₁₁. This structure destabilized the Mg-H bond and improved the kinetics of hydrogen release. The hydrogen release capacity first increased and then decreased with Co content, with Mg-10 %Co showing the best performance. Due to the combined action of ball milling and Co catalysis, the Mg-10 %Co alloy had an activation energy for hydrogen release of 113.65 kJ/mol, making it the alloy with the lowest such activation energy in the set. Differential scanning calorimetry (DSC) analysis confirms that cobalt addition reduces the hydrogen release peak temperature of Mg by 16.58–29.67 °C, with the Mg-10 % Co alloy exhibiting peak temperatures of 410.72–425.53 °C, attributed to synergistic decomposition of MgH₂ with intermediate hydrides like Mg₂CoH₅ and Mg₆Co₂H₁₁. The findings of this study indicate that alloying Mg-based alloys with transition elements while performing ball milling is a practical method for enhancing their hydrogen storage and release kinetics.
研究领域:
材料科学
·
能源存储
·
纳米技术
·
合金工程
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产品关联
DOI
高影响因子
Materials
·
2024
·Vol. 17
·期 12
·2904
·
IF 3.1
Xin Yang,Kaihua Li,Jun Li,Zhuo Sheng,Ying Liu
In this work, the preparation of titanium sponge by magnesium thermal method is regarded as the liquid-phase sintering process of titanium, and powder-metallurgy sintering technology is utilized to simulate the aggregation–growth and densification behavior of titanium particles in a high-temperature liquid medium (the molten Mg-MgCl2system). It was found that compared with MgCl2, Mg has better high-temperature wettability and reduction effect, which promotes titanium particles to form a sponge titanium skeleton at lower temperature. The aggregation degree of titanium particles and the densification degree of a sponge titanium skeleton can be improved by increasing the temperature and the relative content of Mg in the melting medium. The kinetics study shows that with the increase in temperature, the porosity of the titanium particle aggregates and the sponge titanium skeleton decreases, and their density growth rate increases. With the extension of time, the aggregation degree of titanium particles and the densification degree of sponge titanium gradually increase. This work provides a theoretical reference for controlling the density of titanium sponge in industry.
研究领域:
材料科学
·
冶金工程
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产品关联
DOI
PubMed
高影响因子
SURFACE & COATINGS TECHNOLOGY
·
2024
·
IF 5.3
Yuanzhen Duan,Jiyuan Zhu
Developing spray/template-free superamphiphobic surfaces that can resist various kinds of liquids is crucial for academic study and practical demands. In spite of significant evolution, facilely fabricating superamphiphobic surfaces remains a daunting challenge due to the practical dilemma of the time-consuming preparation process and the guarantee of wettability performance. Herein, a facile magnetron-sputtering-assisted chemical deposition technique is advanced to constitute hierarchical dendritic fractal structures on AZ91D Mg alloys that showcase remarkable biomimicry while significantly contributing to superamphiphobicity through extended re-entrant structures. As well as demonstrating promising chemical stability, such surfaces can display exceptional resistance to water and ethylene glycol. The approach employed to create such instrumental superamphiphobic surfaces offers substantial benefits in affordability and efficiency. Remarkably, the entire preparation process only takes 26 min, presenting a novel method for preparing superamphiphobic surfaces.
研究领域:
材料科学
·
表面工程
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产品关联
DOI
高影响因子
ACS Nano
·
2025
·
IF 16
Wen Ren,Migo Szeman Ng,Ye Zhang,Alae Eddine Lakraychi,Yanliang Liang,Dawei Feng,Michelle Lehmann,Guang Yang,Judith Jeevarajan,Wan Si Tang,Yan Yao
Magnesium batteries offer a safer alternative for next-generation battery technology due to their insusceptibility to dendrite deposition. Selective membranes tailored for magnesium-ion conduction will unlock further technological advancement. Herein, we demonstrate fluorine-free magnesiated sulfonated poly(ether ether ketone) (Mg-SPEEK) selective membranes capable of facilitating magnesium-ion conduction while effectively rejecting soluble organic species. These membranes demonstrate a reversible Mg plating and stripping Coulombic efficiency (CE) of 85.4% and an ionic conductivity of 3.3 × 10–4 S cm–1 at room temperature, surpassing those for a Mg-Nafion selective membrane. Theoretical density functional theory (DFT) calculations reveal that SPEEK possesses more localized charge centers along its backbone compared with Nafion, potentially facilitating enhanced ion conduction. Full cells assembled with Mg-SPEEK coupled with the organic cathode pyrene-4,5,9,10-tetraone (PTO) and Mg metal demonstrated significantly improved capacity retention as compared to those assembled with conventional nonselective separators.
研究领域:
材料科学
·
电化学
·
理论计算
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产品关联
DOI
PubMed
高影响因子
Materials
·
2024
·Vol. 17
·期 24
·6159
·
IF 3.1
Qidong Liu,Hongmei Chen,Xiumei Wu,Junjie Yan,Biaobiao Yang,Chenying Shi,Yunping Li,Shu Yu
Silicon oxycarbide (SiOC), Ca- and Mg-modified silicon oxycarbide (SiCaOC and SiMgOC) were synthesized via sol–gel processing with subsequent pyrolysis in an inert gas atmosphere. The physicochemical structures of the materials were characterized by XRD, SEM, FTIR, and29Si MAS NMR. Biocompatibility and in vitro bioactivity were detected by MTT, cell adhesion assay, and simulated body fluid (SBF) immersion test. Mg and Ca were successfully doped into the network structure of SiOC, and the non-bridging oxygens (NBO) were formed. The hydroxycarbonate apatite (HCA) was formed on the modified SiOC surface after soaking in simulated body fluid (SBF) for 14 days, and the HCA generation rate of SiCaOC was higher than that of SiMgOC. Accompanying the increase of bioactivity, the network connectivity (NC) of the modified SiOC decreased from 6.05 of SiOC to 5.80 of SiCaOC and 5.60 of SiMgOC. However, structural characterization and biological experiments revealed the nonlinear relationship between the biological activity and NC of the modified SiOC materials.
研究领域:
材料科学
·
生物医学工程
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
·
2024
·
IF 4.3
Xin Zhang,Lingyu Kong,Pingping Guan,Xue Yang,Aimin Liu,Haitao Huang,Zhongning Shi
Zinc alloy lithium-ion batteries (LIBs) anodes have received widespread attention due to their low cost and high theoretical capacity. However, its volume expansion during the cycling process leads to structural damage and pulverization of the active substance, greatly limiting its further development. This study reports a simple method for preparing pure zinc and Zn–Mg alloy anode materials by one step electrodeposition, and the effect of magnesium doping on the electrochemical performance of zinc anodes was studied. The results indicate that compared with pure zinc anodes, Zn–Mg alloys provide suitable voids for electron transfer and ion diffusion, reducing the charge transfer resistance of zinc anodes. The Zn 83.8 Mg 16.2 LIBs anode shows excellent specific capacity, rate performance, and cycling stability. At the current density of 100 mA g −1 , the initial discharge/charge capacities are 700.4/340.8 mAh·g −1 , and after 1000 cycles, the capacity remains at 137.9 mAh·g −1 and the coulombic efficiency is nearly 100 %. This study provides a candidate method for the preparation of alloy anode materials.
研究领域:
材料科学
·
电化学
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产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Tian Yang,Fengming Ma,Xinqun Zhang,Ya'nan Yang,Jinsheng Lv,Zifeng Jin,Liru Wang,Huimin Gao,Xiaolin Wang,Nan Chen
Rechargeable aqueous magnesium ion batteries (AMIBs) are considered a promising energy storage system due to the relatively high energy density, excellent rate performance and reversibility, and absence of dendrite formation during cycling. However, the high surface charge density of Mg 2+ ions results in slow diffusion kinetics, and high voltage leads to excessive electrolyte decomposition at the electrode/aqueous electrolyte interface, thereby limiting the development of high-energy–density MIBs. In this work, we extend the electrochemical stability window of the aqueous electrolyte to 2.1 V by using a hybrid ion superconcentrated electrolyte at concentrations not achievable with Mg 2+ electrolytes alone. The AMIB with a water-in-salt (WIS) electrolyte delivers discharge capacities of up to 200.6 and 84.4 mAh g −1 , and energy densities of 170.1 and 68.1 Wh Kg −1 at 0.5 and 20 A g −1 , respectively, representing excellent rate performance, while retaining 85 % of the specific capacity after 2000 cycles. Additionally, we explore the corresponding electrochemical reaction mechanism, revealing the synergistic effect of Mg 2+ and Li + ions in the charge/discharge process, which supports the excellent electrochemical performance of AMIB.
研究领域:
材料科学
·
电化学
·
能源存储技术
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Liang Jiang,Qiuyi Wang,Shuang Li,Dong Wang,Yaoyao Tang,Jiahao Luo,Jun Liao,Congcong Ding,Lielin Wang,Mei Tang,Xiaoan Li,Mingsong Shi
Polonium was a highly toxic and radioactive nuclide commonly detected in wastewater from spent fuel reprocessing and lead‑bismuth-cooled reactor systems, making its removal essential for nuclear safety. In this work, lanthanum-modified magnesium‑aluminum layered double oxide (La-MgAl-LDO) was prepared by doping La(III) in Mg-Al layered double oxide (Mg-Al-LDO). Additionally, tellurium, which has similar chemical properties, was used as a substitute for polonium to investigate the adsorption performance. Under the optimized conditions (pH = 6, m/V = 0.2 g/L, and C 0 = 20 mg/L), La-MgAl-LDO achieved a maximum removal efficiency of 99% for tellurite. The adsorption of Te(IV) onto La-MgAl-LDO followed the pseudo-second-order and Freundlich models, indicating that the adsorption process was characterized by multilayer chemical adsorption. The Te(IV) adsorption mechanisms mainly include co-precipitation and surface complexation. In addition, the study confirmed that La 3+ reacted with Te(IV) to form a stable solid precipitate (La 2 Te 6 O 15 ), which played a crucial role in the removal of Te(IV) from aqueous solution.
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产品关联
DOI
高影响因子
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.
研究领域:
材料科学
·
能源化学
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DOI
高影响因子
危险品化学品经营许可证（带存储）