Nature Communications
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2026
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IF 18.1
Mao Qiqi,Wang Wenxin,Yang Ruidong,Deng Kai,Yu Hongjie,Li Wenzhen,Wang Liang,Wang Hongjing,Guo Shaojun
Industrial-level alkynols electrocatalytic semi-hydrogenation using seawater as hydrogen source offers a sustainable alternative to conventional thermocatalytic routes, yet remains limited by the lack of efficient and robust electrocatalysts. Here, we report the synthesis of Nd 1 Gd 1 dual atomic site on metallene for co-production of alkenol and magnesium hydroxide in the seawater system. Nd 1 Gd 1 Pd metallene achieves a selectivity of ≈96.7% and a Faradaic efficiency of ≈87.3% for the conversion of 2-methyl-3-butyn-2-ol to 2-methyl-3-buten-2-ol at −150 mA cm -2 in a flow-cell system, and maintains ≈98.0% selectivity at 1.2 A for over 300 h of continuous operation, achieving the long-term stable co-electrosynthesis of alkenols and magnesium hydroxide in natural seawater at industrial-scale currents. Techno-economic analysis reveals a projected product revenue of at least $8,499 per ton of 2-methyl-3-buten-2-ol, underlining the industrial viability of this process. Mechanism investigations illustrate dual hydrogen-spillover and co-catalytic effects on Nd 1 Gd 1 Pd, promoting migration-reaction coupling mechanism of reactive *H to synergize hydrogenation. This work provides a seawater electrocatalytic semi-hydrogenation system and proposes an optimization strategy by atomically engineered dual hydrogen-spillover effect.
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ACS Applied Materials & Interfaces
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2026
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IF 7.8
Chen Lin,Mengxin Liu,Yuhui Liu,Xin Su,Xinan Shi,Daocheng Pan
Quantum-sized SnO2 nanoparticles have emerged as a promising electron transport layer (ETL) in quantum dot light-emitting diodes (QLEDs) due to their high chemical stability, wide bandgap, and high electron mobility. However, their excessive electron mobility often leads to charge transport imbalance, thereby limiting the device performance. Herein, we report a p-type doping strategy using Mg2+ ions to modulate the electron transport capability of SnO2 nanocrystals. By varying Mg-doping concentration, we achieve a wide-range tuning of electron mobility and conductivity over nearly 3 orders of magnitude. This suppression of electron transport enables the balanced charge injection in inverted QLEDs. As a result, red-emitting devices incorporating 2.0% Mg-doped SnO2 ETLs exhibit an average external quantum efficiency (EQE) of 19.35% and a peak EQE of 22.04%. This work demonstrates Mg-doped SnO2 nanoparticles as a superior alternative to ZnO nanoparticles for highly efficient and stable QLEDs.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2026
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IF 6.7
Wanyu Li,Yu Xiao,Rui Yao,Jinping Li,Guang Liu
Solution-reduced nano-Mg is uniformly dispersed in flower-like Ni/C(D). • Mg 2 Ni/Mg 2 NiH 4 pump and carbon confinement synergistically enhance kinetics. • 100% capacity retention over 90 cycles after activation. A rationally designed Mg-Ni/C(D) composite was synthesized by calcining a hydrothermally prepared Ni-MOF(BDC) precursor (from Ni 2 + and terephthalic acid, H 2 BDC) into flower-like porous Ni/C(D), followed by Mg loading via lithium-naphthalenide reduction. Spherical Ni/C(T) was prepared similarly using trimesic acid (H 3 BTC). Compared with Ni/C(T), Ni/C(D) possesses an effective hierarchical porous structure, enabling a higher effective reversible hydrogen storage capacity (based on the total composite mass) at a comparable dehydrogenation onset temperature. During hydrogen sorption, in situ-formed Mg 2 Ni acts as a reversible Mg 2 NiH 4 /Mg 2 Ni hydrogen pump, lowering the kinetic barrier and providing nucleation sites for the Mg/MgH 2 transformation, while the carbon matrix confines nanoparticles to prevent agglomeration. Notably, after 10 activation cycles, it retains nearly 100% capacity over the next 90 cycles. This synergy between catalytic pumping and nanoconfinement makes Mg-Ni/C(D) promising for solid-state hydrogen storage. Download: Download high-res image (156KB) Download: Download full-size image Through in situ lithium-naphthalenide reduction, nano-Mg is uniformly embedded in the flower-like Ni/C(D) scaffold. The Mg 2 Ni/Mg 2 NiH 4 hydrogen pump, coupled with carbon nanoconfinement, effectively lowers the kinetic barriers via interfacial electron transfer and hydrogen diffusion, yielding a low onset temperature of 223.38 °C and 100% capacity retention over 90 cycles after activation. This work demonstrates a rational strategy for designing high-performance Mg-based hydrogen storage materials.
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JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
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2025
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IF 1.6
Feng Zihao,Wang Yang,Ren Qi,Yi Cui,Li Yang,Du Yanjun,Wang Changfu,Wang Yun
Effective U(VI) separation from uranium wastewater is crucial for nuclear energy's sustainable growth. A magnetic, cauliflower-shaped magnesium-iron bimetallic oxide loaded biochar (MFBC) was fabricated via a green hydrothermal co-pyrolysis. Its U(VI) adsorption process was pH-dependent and fitting Langmuir–Freundlich and pseudo-second-order models, the theoretical maximum adsorption capacity of U(VI) by MFBC peaked at 1354.8 mg·g −1 (pH 5.0, 30 min). After five regenerations, 90.3% removal remained. The adsorption mechanism of MFBC for U(VI) involved electrostatic interaction, surface complexation, ion exchange and reduction reaction, making it a highly efficient and excellent adsorbent for treating uranium-containing wastewater.
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Advanced Science
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2026
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IF 14.1
Pengcheng Jing,Atsushi Inoishi,Chengcheng Zhao,Eiichi Kobayashi,Peng Ren,Isaac Abrahams,Duncan H. Gregory
Magnesium-ion batteries (MIBs) are a promising alternative to lithium-ion technologies due to their inherent safety and potential for sustainable, large-scale energy storage, yet their development remains hindered by the scarcity of high-capacity cathode materials. In this study, we reveal a significant leap in performance in a structurally unique quasi-1D pseudo-layered NbS 3 cathode for MIBs, achieved through electrochemical interlayer engineering. In operando and ex situ PXRD, SEM-EDS, and XPS confirm the intercalation of 1-butyl-1-methylpyrrolidinium (BMPyrr + ) cations, which results in substantial expansion of the interlayer spacing. This expansion not only enhances magnesium ion diffusion but also activates the dual Nb 4+ /Nb 3+ and S 2 2− /S 2− redox processes for access to abundant ion storage sites, as elucidated by ex situ XAS analysis. In addition, multiple coupled factors, including BMPyrr + -enabled channel opening and electrochemically induced morphological reconfiguration (i.e., nanosizing/fragmentation) further promote pseudo capacitive behavior. Consequently, the expanded NbS 3 electrode delivers a high reversible capacity of up to 200 mA h g −1 at 50 mA g −1 , plus excellent cycling stability, significantly outperforming its unmodified counterpart. This work highlights NbS 3 as a novel dual-redox trichalcogenide cathode for MIBs and demonstrates the power of interlayer expansion in unlocking inherent redox reactions for improving performance in multivalent-based energy storage systems.
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Journal of Sustainable Metallurgy
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2026
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IF 3.5
Zhu Linchao,Ge Yuanyang,Wang Lin,Yuan Peiqing,Xu Xinru,Yang Jingyi
The leaching behavior of metallic elements in steel slag during acetic acid treatment is critical for its application in carbon sequestration. X-ray fluorescence (XRF), X-ray photoelectron spectroscopy (XPS), and X-ray diffraction (XRD) characterized the content and morphology of major elements (Ca, Mg, Fe) in steel slag. The acid leaching kinetics of 3.2–5.0 mm steel slag in acetic acid was investigated via the fractal shrinking core model, where the introduction of fractal dimension improved the accuracy of describing leaching kinetics for large particles. Results showed that Ca 2+ and Mg 2+ leaching was dominated by ash-layer diffusion, while Fe 3+ leaching was controlled by surface reactions. Based on the surface zeta potential of steel slag, benzyltrimethylammonium chloride (TMBAC) was used to neutralize the anion shield layer, reducing ash-layer diffusion resistance and enhancing Ca 2+ and Mg 2+ leaching rates. Optimization of reaction parameters yielded a maximum Ca 2+ leaching rate of 61.51%. This study provides a basis for enhanced approaches to utilizing steel slag in processes requiring metal extraction, such as carbon sequestration. Graphical
The alternative text for this image may have been generated using AI.
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Nano-Micro Letters
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2026
·Vol. 18
·期 1
·94
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IF 36.3
Li Yinghui,Ren Li,Li Zi,Yao Yingying,Lin Xi,Ding Wenjiang,Ferrari Andrea C.,Zou Jianxin
The as-synthesized rN-pC exhibited H 2 uptake of ~0.9 wt% at 77 K and ultralow pressure of ~0.1 bar, with an isosteric adsorption enthalpy (Q st ) of ~14 kJ mol -1 H 2 at zero coverage.
The 60MgH 2 @rN-pC started to decompose at 175 °C and released H 2 of 3.38 wt% at 300 °C within 30 min, which showed outstanding desorption kinetics of MgH 2 among Mg-carbon material nanocomposites.
The drawback of nanoconfinement scaffolds that cannot store hydrogen was firstly overcome.
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ELECTROCHIMICA ACTA
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2026
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IF 5.8
Xue Yang,Aimin Liu,Qingyun Zhao,Wanquan Bai,Junli Xu,Zhongning Shi
Electrodeposition of an aluminum coating is an effective approach for improving the corrosion resistance of LA103Z Mg-Li alloy. In this study, aluminum coatings were electrodeposited on LA103Z alloy from an AlCl 3 -Et 3 NHCl ionic liquid electrolyte with CeCl 3 as an additive. The effects of CeCl 3 concentration (1 mmol·L -1 ∼0.1 mol·L -1 ) on the morphology, composition, microstructure, and corrosion resistance of the coatings were systematically investigated. Results show that within the range of 1 mmol·L -1 ∼0.01 mol·L -1 , the coating grain structure became fine and uniform. As the concentration increased to 0.1 mol·L -1 , the Ce content in the coating rose, leading to surface cracks and increased roughness. At a cerium concentration of 5 mmol·L -1 , Ce in the coating is predominantly present as trace amounts of Ce 2 O 3 and CeO 2 . Polarization measurements conducted in a 3.5 % NaCl solution reveal a corrosion potential of -1.43 V and a corrosion current density of 34.88 μA·cm -2 .
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ACS Sustainable Chemistry & Engineering
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2021
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IF 8.198
Dandan Peng,Ying Zhang,Shumin Han
Magnesium hydride is considered as a promising candidate for hydrogen storage; however, the sluggish kinetics and thermodynamic stability seriously obstruct its industrial applications. Hence, in order to improve the hydrogen storage performances of magnesium hydride, NiS@C additive was ball-milled with Mg powder to build NiS@C/Mg. The MgH2/Mg2NiH4 polyphase hydrides were in situ formed after hydrogenated activation and turned into Mg/Mg2Ni phases during the dehydrogenation process, establishing a cycle of hydrogen absorption and desorption. The NiS@C/Mg composite showed enhanced de/hydrogenation rates: it could quickly absorb 6.02 wt % H2 within 5 min at 250 °C and desorb 5.34 wt % H2 at 300 °C. Moreover, even at the temperature of 50 °C, it could reach 3.23 wt % hydrogen absorption capacity, and the apparent hydrogen desorption activation energy for MgH2 decreased to 60.45 kJ mol–1. It also delivered a high cyclic stability performance of 98.9% for hydrogen absorption and 98.5% for hydrogen desorption after 50 cycles. The enhanced de/absorption kinetics of NiS@C/Mg were ascribed to the synergistic effects of multiple-phase MgH2/Mg2NiH4 hydrides and the in situ formed MgS catalyst, and the existence of C also effectively prevented the passivation and agglomeration of multiple-phase particles. The method of in situ generating of multiple-phase hydrides and catalysts provides a new view for the preparation of high-performance hydrogen storage materials.
研究领域:
材料科学
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氢能
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纳米复合材料
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能量存储
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ChemistrySelect
·
2022
·Vol. 7
·期 40
·e202203035
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IF 2.307
Yuxiu Fu,Yaming Pang,Yinan Zheng,Xiaoli Song,Liguo Gao
Graphical Photocatalysts enhance the ability to absorb low-energy photons due to the reduction of the band gap. Through the photocatalytic mechanism, it is known that when there is irradiation with light (hv) energy entering Mg 2+ -Mo 6+ -Al 3+ -MoO 4 2− -Layered double hydroxides (LDHs), highly active hole-electron pairs will be generated, and a large amount of ⋅OH will be generated after the reaction, which can completely oxidize the phenol in water into CO 2 and H 2 O. Mg 2+ -Mo 6+ -Al 3+ -MoO 4 2− -Layered double hydroxides (LDHs) materials were successfully prepared via a hydrothermal method by doping Mo 6+ in hydroxide laminates and inserting MoO 4 2− to replace the interlayer anions of LDHs materials. The samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscope (TEM), Fourier transform infrared spectrometer (FTIRS) and ultraviolet-visible spectrophotometer (UV). The electronic density of states was calculated using the density functional theory (DFT) of Vienna Ab-initio Simulation Package (VASP). The effects of Mo 6+ and MoO 4 2− on the structure, morphology, electronic structure and photocatalytic performance of Mg 2+ -Al 3+ -LDHs were systematically studied. The conditions for phenol degradation by Mg 2+ -Mo 6+ -Al 3+ -MoO 4 2− -LDHs were optimized by single factor analysis and response surface methodology. The results show that the MoO 4 2− anion reduces the band gap width and thus enhances the absorption of low-energy photons. The interaction between cations and anions enhances the photocatalytic performance. When the dosage of Mg 2+ -Mo 6+ -Al 3+ -MoO 4 2− -LDHs was 0.03 g, the temperature was 40 °C and the visible light irradiation was 15 min, the removal rate of phenol reached 94.76 %.
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SOLAR ENERGY
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2022
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IF 7.188
J. Yan,B.W. Yang,C.Y. Zhao
Thermochemical energy storage (TCES) is a promising energy storage method because of its high energy storage density and long-term storage ability. The reactor is the most critical part of the TCES system, and the fluidized bed reactor (FBR) is a novel reactor, which is not restricted by the low effective thermal conductivity of energy storage materials. However, there is little theoretical guidance about the design and operation of the FBR for a TCES system. In this study, we investigated the performance of an FBR using MgO/Mg(OH) 2 as reaction materials by establishing a numerical model followed by experimental validation. The influence of operating parameters on the bed temperature was discussed based on numerical results. According to the sensitivity analysis, the reactor inner diameter, material mass, and inlet gas velocity were the main factors affecting the bed temperature. The optimal boundary surface temperature was analyzed, which influences the proportion of TCES in the total heat storage.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2022
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IF 6.371
Ying Zhang,Pei Sun,Zak Fang,Shili Zheng,Xiaofang Zhu
Deoxygenation is in high demand in the titanium industry. This research was carried out to experimentally determine the oxygen removal limits by the novel hydrogen-assisted Mg deoxygenation method. Spherical Ti and Ti-6Al-4V (or TC4, Ti64) powders with around 2.2 wt% oxygen were prepared for the deoxygenation research. The deoxygenation kinetics were modeled based on a non-steady-state radial diffusion. The results show that in the β phase region, the time to reach the equilibrium is slightly affected by the initial oxygen content in titanium, but is strongly influenced by the particle size. The reliance of the equilibrium duration on the diffusion coefficient is stronger when the particle size is larger. Guided by the kinetic prediction, deoxygenation experiments were carried out. Under a 1 atm pure H 2 atmosphere, the deoxygenation limits by Mg for pure Ti are 252 ppm at 700 °C, 289 ppm at 750 °C, and 554 ppm at 800 °C, and for TC4 are 296 ppm at 750 °C, 371 ppm at 800 °C, and 743 ppm at 850 °C, consistent with the thermodynamics that a lower temperature possesses a more potent driving force for deoxygenation. These data have clearly demonstrated the strong deoxygenation capability of the hydrogen-assisted Mg deoxygenation method.
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