CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 13.2
Menghuan Wu,Yifang Zhang,Zhiping Xu,Yuqi He,Jialei Wang,Tian Xie,Shuduan Deng,Lidan Zhang,Gang Zhu
Metal–organic frameworks often lose CO 2 capacity in hot, humid flue gas because H 2 O competes for open metal sites (OMSs). Here we report a dual-stabilized, wood-based adsorbent in which Mg-MOF-74 is grown on an aminated wood sponge and overcoated with an ultrathin polydimethylsiloxane (PDMS) layer, coupling support immobilization with interfacial hydrophobization while preserving access to OMSs. Under flue-gas-relevant conditions (323 K, 50% RH), the material delivers a CO 2 uptake of 1.68 mmol·g −1 (≈89% of its dry-state capacity) and an IAST CO 2 /N 2 selectivity of 144 for a 50/50 mixture at 323 K. Humid-gas breakthrough tests confirm robust separation performance. Density functional theory (DFT) calculations attribute the humidity tolerance and selectivity to the synergy between accessible OMSs and PDMS-mediated interfacial polarity, without increasing the isosteric heat of adsorption, thereby enabling energy-efficient regeneration. The framework retains its crystallinity after 30 days of water immersion, and a techno-economic estimate projects a material cost of approximately US$10.36 kg −1 at a 1000 t·yr −1 scale. This scalable architecture reconciles capacity, selectivity, humidity resistance, and cost for post-combustion CO 2 capture.
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TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
·
2024
·
IF 4.7
Jia ZHAO,Yi-hang YAN,Hao ZHANG,Hua-yang GAO,Ye ZHANG,Gui-min LU
ABSTRACT The electrochemical behavior of MgCl 2 and the co-deposition mechanisms of Mg and Sr in the SrCl 2 −KCl eutectic system were evaluated using various electrochemical techniques, including cyclic voltammetry (CV), square wave voltammetry (SWV), and open-circuit potential (OCP) analysis. It was observed the Mg(II) reduction on the tungsten electrode in SrCl 2 −KCl melt occurred in a single-step process involving the transfer of two electrons, exhibiting a quasi-reversible mode. The electrochemical co-deposition of Mg and Sr in the SrCl 2 −KCl−MgCl 2 melt involved the formation of two types of Mg−Sr intermetallic compounds. The evolution in the co-deposition mechanism of the nucleation type with changing overpotential was explored through chronoamperometry (CA). It is shown that the nucleation pattern on the electrode surface was depended on the substrate materials and the electrode reaction products. Early-stage nucleation was attributed to Mg(II) reduction under all overpotential conditions. With the co-deposition of Mg and Sr, Mg(II) was reduced to form the Mg nucleus on the electrode surface, followed by underpotential deposition of Sr(II) on the Mg surface accompanied by Mg deposition simultaneously. Additionally, increasing MgCl 2 concentration in the SrCl 2 −KCl melt resulted in a higher current density during the Mg−Sr co-deposition process.
研究领域:
电化学
·
材料科学
·
熔盐化学
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金属沉积
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金属间化合物
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高影响因子
Inorganic Chemistry Frontiers
·
2019
·Vol. 6
·期 12
·3569-3576
·
IF 5.934
Ran Wang,Guoan Lin,Xiaoxiang Xu
Nitrogen doping has been frequently adopted as a useful strategy to endow wide band gap semiconductors with visible light photocatalytic activities. Nevertheless, factors that may influence the effects of nitrogen doping are seldom touched. In this work, we synthesized a series of complex perovskites Sr3BNb2O9 (B = Mg, Ca and Sr) and applied nitrogen doping strategies to these compounds. Our results suggest that a wealth of important parameters such as structural distortions, cation ordering, nitrogen uptake, visible light absorption and surface hydrophilicity are all strongly correlated with cations in the B site. Accommodating large Sr cations in the B site helps to reduce structural distortions and the level of cation ordering. It is also helpful to increase nitrogen uptake, visible light absorption and surface hydrophilicity, all of which seem to be responsible for a much higher photocatalytic activity for water oxidation reactions. The strong correlations between B site cations and the aforementioned parameters open a new avenue for the design and development of efficient photocatalytic properties of these promising materials.
研究领域:
材料化学
·
光催化
·
无机功能材料
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能源化学
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半导体物理
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Separations
·
2026
·Vol. 13
·期 5
·148
·
IF 3.5
Siyu Wang,Junyang Du,Junsu Jin,Jianguo Mi
Metal–organic frameworks (MOFs) show great potential for post-combustion carbon capture, yet their practical application is often constrained by challenges such as powder handling difficulties, limited structural stability during shaping processes, and performance degradation under high-humidity conditions. In this study, Mg-gallate was structured into millimeter-sized Mg-gallate/CA composite beads via the ionotropic gelation method, and then a hydrophobic layer of vinyltrimethoxysilane (VTMS) was constructed on the bead surface by chemical vapor deposition. The synthesized Mg-gallate/CA and V-Mg-gallate/CA are characterized by XRD, FT-IR, and other techniques, and their CO2adsorption behavior, adsorption–desorption kinetics, breakthrough performance, and cyclic stability are systematically evaluated. At 298 K and 0.1 bar, the CO2adsorption capacity of Mg-gallate/CA reached 94.2% of that of Mg-gallate powder. The microporous–microporous hierarchical structure constructed by the ionotropic gelation method improved the CO2capture efficiency of the composite beads by 16.7% at 0.1 bar. V-Mg-gallate/CA maintained a high dynamic CO2adsorption capacity of 2.87 mmol/g for a 10 vol.% CO2/90 vol.% N2gas mixture at 298 K under 80% RH, corresponding to 2.04 times the capacity of Mg-gallate/CA, and retained 98.8% of its initial adsorption capacity at 0.1 bar after 10 cycles. Combining ionotropic gelation shaping with surface hydrophobic modification represents an effective strategy for developing MOF-based adsorbents suitable for post-combustion CO2capture.
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Surfaces and Interfaces
·
2026
·
IF 6
Sawaira Adil,Muhammad Naveed Afridi
Novel FMAB-MX beads were developed for efficient phosphate removal and recovery. • The Langmuir maximum phosphate adsorption of 155 mg P g⁻¹ was achieved. • Pseudo-second-order kinetics confirmed a chemisorption process. • Phosphate binding via electrostatic attraction and Fe/Mg chemisorption. • FMAB-MX achieved ∼90% phosphate recovery with excellent reusability. The present study explores a novel Fe/Mg-functionalized alginate–MXene composite bead (FMAB-MX) as an efficient adsorbent for phosphate removal and recovery from water. The physicochemical properties and surface chemistry of FMAB-MX were characterized using scanning electron microscopy (SEM), X-ray diffraction (XRD), Brunauer–Emmett–Teller (BET) analysis, X-ray photoelectron spectroscopy (XPS), thermogravimetric analysis (TGA), and Fourier transform infrared spectroscopy (FTIR) to elucidate its structural characteristics and adsorption mechanisms. FMAB-MX achieved phosphate removal efficiency of up to 82% in batch tests, demonstrating approximately 64- and 20-fold higher removal efficiency than MXP and MXB, respectively. FMAB-MX exhibited a maximum adsorption capacity of 155.1 mg P g⁻¹ (475.3 mg PO₄ g⁻¹), whereas FMP-MX showed 64.2 mg P g⁻¹ (196.8 mg PO₄ g⁻¹). Isotherm and kinetic modeling showed that phosphate adsorption onto FMAB-MX was best described by the Langmuir isotherm and pseudo-second-order model, respectively, suggesting monolayer adsorption behavior. FMAB-MX also exhibited high resistance to interference from inorganic anions commonly found in natural water. Furthermore, approximately 89% of the adsorbed phosphate was recovered under mild alkaline conditions, demonstrating excellent reusability and stability over five successive cycles. These findings indicate that FMAB-MX beads represent a sustainable and efficient adsorbent for nutrient recovery and advanced water treatment applications while providing a novel contribution to the still-limited literature on alginate-crosslinked MXene composites for phosphate removal and recovery. Download: Download high-res image (256KB) Download: Download full-size image
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Journal of Magnesium and Alloys
·
2026
·
IF 15.8
Haoyuan Zheng,Hua Ning,Chen Jin,Shuzhong Wang,Yadong Wang,Shixuan He,Haizhen Liu,Xinhua Wang
The magnesium-based hydrogen storage composite system Li–Mg–N–H (Mg(NH 2 ) 2 –2LiH) has attracted considerable attention due to its moderate operating temperature and high reversible capacity of 5.6 wt%, but its sluggish hydrogen absorption/desorption kinetics and poor cycling stability limit practical applications. Introducing an efficient catalyst is key to overcoming these issues. Herein, for the first time, an MBene material is introduced into a solid-state hydrogen storage system. Mo 4/3 B 2- x with a flower-like structure is successfully prepared by selective etching of the MAB phase (Mo 4/3 Y 2/3 AlB 2 ) and is then added as a catalyst into the Mg(NH 2 ) 2 –2LiH system. The improving effect and the underlying mechanism on hydrogen storage performance are systematically investigated. The results show that the composite with 10 wt% Mo 4/3 B 2- x exhibits optimal comprehensive performance. The onset temperatures for hydrogen absorption and desorption are significantly reduced from 110/130°C to 65/106°C, respectively. The hydrogen absorption/desorption capacities exceed 4.7 wt% under isothermal conditions at 180°C/170°C, and the apparent activation energy for hydrogen desorption decreases from 117.0 kJ/mol to 87.5 kJ/mol. Remarkably, after 100 cycles, the reversible capacity remains above 4.47 wt%, demonstrating excellent cycling stability. Mechanistic studies combined with DFT calculations reveal that the flower-like Mo 4/3 B 2- x dissociates into fine petals and becomes highly dispersed in the matrix during ball milling. The interaction between the catalyst and the matrix effectively weakens the N–H and Mg–N bonds and promotes the retention of the cubic phase Li 2 MgN 2 H 2 in the hydrogen desorption product, which is more favorable for rehydrogenation. Meanwhile, abundant boron vacancies in the catalyst structure provide fast diffusion channels for hydrogen atoms, and the highly dispersed nano-petals effectively separate the matrix particles, collectively enhancing the kinetics and cycling performance. This work opens a new direction for the application of MBene materials in solid-state hydrogen storage and provides a new strategy for the rational design of high-performance hydrogen storage catalysts.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Ruihan Li,Feng Hu,Ran Wu,Jianyi Xu,Jin Xu,Zhonghui Hou,Min Zhou,Junyu Bai,Yanghuan Zhang
In the present study, the synthesis of NdMg 12 + x wt%Ni( x = 0, 5, 10, 15) alloy was effectively accomplished through the technique of ball milling , and the profound impact of Ni on the microstructural attributes, as well as the hydrogen absorption and desorption characteristics of NdMg 12 alloy, was meticulously examined. The microstructural analysis reveals that Ni can notably facilitate the development of nanocrystalline and amorphous structural configurations. Subsequent investigations uncovered that a portion of Ni was transformed into the Mg 2 Ni phase on the surface of the NdMg 12 alloy, thereby increasing the number of hydrogen absorption active sites and subsequently enhancing the hydrogen absorption and desorption capabilities of the NdMg 12 +Ni alloy. A thermodynamic analysis reveals that the incorporation of Ni exerts a substantial elevating effect on the hydrogen desorption plateau pressure of NdMg 12 +Ni alloy. As the Ni content escalates from 0 wt% to 5 wt%, the enthalpy of the hydrogen desorption process plummets significantly, from 89.1888 kJ/mol H 2 to 80.2806 kJ/mol H 2 . Concurrently, the addition of Ni markedly diminishes the hysteresis coefficient during hydrogen absorption and desorption, thereby enhancing the overall hydrogen absorption and desorption efficiency of NdMg 12 +Ni alloy. Moreover, the inclusion of Ni not only expedites the hydrogen absorption rate within the NdMg 12 +Ni alloy but also substantially diminishes the activation energy for hydrogen desorption, effectively lowering the minimal hydrogen desorption temperature from 261℃ to 199℃. Notably, the NdMg 12 + 10 wt%Ni alloy exhibited the lowest activation energy (Ea = 114.4995 kJ/mol) and demonstrated superior hydrogen desorption kinetics.
研究领域:
材料科学
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金属氢化物
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储能材料
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固态储氢
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物理化学
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合金设计
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纳米材料
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DOI
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CERAMICS INTERNATIONAL
·
2021
·
IF 4.527
Shiyao Shen,Ying Tang,Jie Li,Weishuang Fang,LaiYuan Ao,Xiangguang Zhao,Liang Fang
Substitution of Ga 3+ by [Zn 0.5 Ti 0.5 ] 3+ in MgGa 2 O 4 improved the comprehensive properties of the resultant spinel. A continuous solid solution with a spinel structure was formed in Mg(Zn 0.5 Ti 0.5 ) 2 x Ga (2−2 x ) O 4 (0 ≤ x ≤ 1); here, Zn 2+ occupied the tetrahedral 8 a site while Ti 4+ occupied the octahedral 16 d site, resulting in a decrease in the degree of inversion λ from 0.86 to 0. The optimal sintering temperature decreased from 1460 °C to 1220 °C, and the dielectric constant ( ε r ) increased from 8.8 to 14.9; these changes could be ascribed to the greater polarizability of [Zn 0.5 Ti 0.5 ] 3+ relative to that of Ga 3+ . The temperature coefficient of resonant frequency ( τ f ) of the material remarkably increased from −64.1 ppm/°C to −16.8 ppm/°C, which may be attributed to the increase in dielectric polarizability/molecular volume, bond energy, and bond valence in B-sites. The high-quality factor ( Q × f ) slightly decreased from 89,253 GHz to 73,432 GHz with decreasing λ and packing fraction. Optimal microwave dielectric properties were obtained from the sample with x = 1 and sample sintered at 1220 °C; in this case, ε r = 14.9, Q × f = 73,432 GHz, and τ f = −16.8 ppm/°C.
研究领域:
材料科学
·
无机化学
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DOI
高影响因子
JOURNAL OF BIOMATERIALS APPLICATIONS
·
2025
·
IF 2.5
Jian Gu,Shuangjian He,Peng Zhang,Long Zhou
Infected bone defects are characterised by inadequate local blood supply and the formation of bacterial biofilms, which impede bone tissue regeneration and repair, presenting a significant clinical challenge. In this study, we developed a bifunctional scaffold combining near-infrared (NIR)-responsive antibacterial activity with osteogenic properties by co-electrospinning photothermally active copper hydroxyphosphate (Cu2(OH)PO4, CuHP) and osteogenic magnesium-calcium phosphate (Mg-CaP) into poly (L-lactic acid) (PLLA) membranes. Near-infrared (NIR) irradiation activates the photothermal response of CuHP in nanofiber membrane scaffolds, effectively killing bacteria through photothermal therapy (PTT), while the released Mg-CaP synergistically promotes osteogenesis. Animal studies have revealed that the scaffold effectively inhibit infections while accelerating bone healing, offering a promising strategy for infected bone defects.
研究领域:
生物材料学
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组织工程
·
骨科学
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感染控制
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纳米医学
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光热治疗
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再生医学
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DOI
PubMed
高影响因子
Journal of Energy Storage
·
2023
·
IF 9.4
Hui Yong,Yiwan Chen,Yanquan Ji,Shuai Wang,Jiangwei Ma,Baosheng Liu,Jifan Hu,Yanghuan Zhang
Solid-state magnesium-based hydrogen storage encounters challenges associated with sluggish hydrogen absorption and desorption kinetics. The incorporation of catalysts is considered a promising means to improve the hydrogen absorption and desorption kinetics of these alloys. In this experiment, we prepared the Mg 80 Ni 15 Y 5 alloy via vacuum melting and incorporated TiF 3 in varying weight percentages of 1, 3, 5, and 7 wt% through ball milling . The phase composition and microstructure of the samples were analyzed and measured using X-ray diffraction meter (XRD), Transmission Electron Microscope (TEM), Selected Area Electron Diffraction (SAED), and Scanning Electron Microscope (SEM) techniques. The results revealed that the TiF 3 introduced two catalytically phases, MgF and TiF 2 . And TiF 2 transforms into TiH 2 after hydrogen absorption, which covers the surface of MgH 2 and prolongs the nucleation time of MgH 2 .Furthermore, the addition of TiF 3 made the surface of alloy markedly coarser and more irregular and few cracks, providing channels for hydrogen diffusion. This behavior optimized the kinetic performance of the alloy. It was observed that the samples containing 7 wt%TiF 3 achieved 99.2 % hydrogen saturation even in low-temperature. It's worth mentioning that the addition of 7 wt% TiF 3 to the Mg 80 Ni 15 Y 5 alloy significantly reduced the dehydrogenation activation energy to 58.5 kJ/mol, as opposed to pure magnesium with an activation energy of 158.2 kJ/mol. This substantial reduction has effectively accelerated the hydrogen absorption and desorption rates of the alloy. However, it had only a negligible impact on the thermodynamic properties of the sample with 7 wt%TiF 3 .
研究领域:
材料科学
·
能源储存
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高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2024
·Vol. 35
·期 23
·1580
·
IF 2.8
Guo Zexuan,Wang Nan,Fei Xiaomiao,Yang Feng,Zhao Man,Peng Yanyan,Zhang Jing,Jiang Dayong
The generation, transfer, and collection of plasmon-derived hot electrons represent a distinctive pathway for photodetectors to utilize solar energy. However, previously reported devices have a low internal quantum efficiency due to excessively high Schottky barrier. The coupling distance between working medium and metal nanoparticles (NPs) is one of the key factors affecting the performance of optoelectronic devices. We constructed a dual-surface plasmon-enhanced (Mg, Zn)O-ultraviolet (UV) photodetector by applying Pt NPs and found that the assembled device exhibited broad sensitivity ranging from 340 to 370 nm at room temperature. Intense dual plasmonic resonance coupling is induced in a hybrid structure of two metallic layers separated by uniform ZnO-based films. Using surface plasmon-enhanced materials, the changes in the refractive index of ZnO/Pt/MgZnO and MgZnO/Pt/ZnO heterogeneous double-layer in the dielectric environment are beneficial for the tunneling of hot electrons. ZnO/Pt/MgZnO is superior to MgZnO/Pt/ZnO in terms of responsivity and response time. The responsivity of the ZnO/Pt/MgZnO device peaks at 2.87 A/W, exhibiting the great potential of dual plasmonic resonance coupling in a UV photodetector, which was finally investigated via Mie scattering. The response time of the photodetectors in a steady-state is 0.2 s, 0.3 s, while 0.1 s, 0.73 s is the response time of the photodetectors (PDs), which paves the way for future application advancements in the field of photodetection, imaging, photovoltaics, and photochemistry.
研究领域:
光电子学
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纳米光子学
·
等离激元学
·
半导体器件
·
光电探测
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高影响因子
PROPELLANTS EXPLOSIVES PYROTECHNICS
·
2023
·Vol. 48
·期 6
·e202300022
·
IF 1.8
Ximing Zhang,Peng Jin,Wenhao Liu,Tianqi Li,Shuang Liu,Wu Yang,Cong Zhu,Mengze Zheng,Yunjun Luo
In this work, the energetic thermoplastic polymers were synthesized with different ratios of energetic prepolymer glycidyl azide (GAP) and isophorone diisocyanate (IPDI), and used as the binder to prepare fuel-rich propellants based on Al−Mg. The results showed that energetic thermoplastic polymer enabled the fuel-rich propellant a faster flame spread, greater flame strength, and a stronger injection effect of metal droplets. The weight loss (Δ m ) of the propellants increased with GAP content, while the weight loss rate ( D max ) increased similarly. The Δ m increased from 7.92 % to 9.86 % and D max from −0.23 % ⋅ °C −1 to −0.35 % ⋅ °C −1 in the range 100–256.5 °C. The propellant with the highest GAP content (85GAP-Prop) had the lowest apparent activation energy (150.77 kJ ⋅ mol −1 ). The average pressure rate of 85GAP-Prop burning in a closed bomb reached 7.67 MPa ⋅ s −1 and the maximum instantaneous pressure rate could reach 16.52 MPa ⋅ s −1 , significantly higher than the other propellants. The combustion products analysis indicated that the higher GAP content in the GAP-IPDI energetic thermoplastic polymer more significantly reduced the agglomeration of Al particles and improved the loosening of the combustion products. The rapid combustion gas generation characteristic and energy release of energetic thermoplastic polymer enhanced the combustion characteristics of the fuel-rich propellant based on Al−Mg, which promoted dispersion level between the metal droplets. This work provides insight into the combustion principles and performance improvements of fuel-rich propellant based on Al−Mg.
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