ACS Nano
·
2026
·
IF 17.3
Zhang Huan,Liu Minrui,Zhou Zhongqin,Ye Pengfei,Wen Lingyi,Feng Quanqing,Song Ningning,Wang Yanyun,Ma Guohang,Sun Ran,Zhang Kun,Wu Qihong,Zhang Meng,Wang Yining,Guo Yingkun,Fan Haiming
Accurate
magnetic resonance imaging (MRI) of microvascular
occlusive
diseases, exemplified by subsegmental pulmonary embolism (SSPE), remains
a clinical challenge because of the intrinsic limitations of clinically
available Gd-based small molecular contrast agents (CAs). Ultrasmall
iron oxide nanoparticles (USIOs)-based CAs have emerged as promising
alternatives, offering adjustable MRI T 1 relaxivity, favorable pharmacokinetics, and high biocompatibility;
however, their performance is critically hampered by inefficient atomic
utilization for MR T 1 relaxivity enhancement.
Herein, we report Mg-doped USIOs MRI CAs with high atomic utilization
efficiency, where incorporating a biocompatible Mg dopant into surface
octahedral-site Fe vacancies substantially boosts the T 1 relaxivity, enabling accurate detection of SSPE-associated
structural and perfusion abnormalities. The Mg 0.03 -USIOs
exhibit a 261-fold enhancement of T 1 relaxivity
contribution by the Mg dopant, achieving an exceptionally high T 1 relaxivity of 12.6 mM −1 s −1 . Such a high atomic utilization efficiency could
stem from the promoted spin polarization and ferromagnetic spin alignment
through the surface Mg doping, which considerably boosts the magnetic
moment and outer-sphere relaxation contribution. Further in vivo MRI studies in a pig SSPE model demonstrated that the
Mg 0.03 -USIOs enabled visualization of structural and perfusion
abnormalities in SSPE, far surpassing the capabilities of Gd-based
CAs. In vivo biosafety assessment in the pig model
confirmed the high biocompatibility of Mg 0.03 -USIOs. Our
findings provide a highly efficient doping strategy to construct high-performance
USIOs-based T 1 CAs for sensitive MRI of
microvascular structural and functional abnormalities.
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JOURNAL OF APPLIED POLYMER SCIENCE
·
2026
·
IF 3.1
Bofan An,Hui Ye,Xuefen Wang
As the global population of chronic kidney disease (CKD) patients continues to expand, high-performance adsorbents for uremic toxins have emerged as a critical solution to alleviate dialysis treatment challenges. In this work, a layered double hydroxide (Mg–Al LDH) was prepared via a facile hydrothermal approach and subsequently functionalized for adsorption of protein-bound toxins by organosilicon quaternary ammonium salt (Q-Mg–Al LDH). The synthesized Q-Mg–Al LDH was then incorporated into sodium alginate (SA) solution to achieve a three-dimensional Q-Mg–Al LDH/SA composite aerogel (SA-Q) by freeze-drying for easy maneuverability as adsorbents. Specifically, the organosilicon quaternary ammonium-grafted LDH (Q-Mg–Al LDH) offered both long alkyl chain and positively charged quaternary ammonium moieties, enabling synergistic adsorption through electrostatic and hydrophobic interactions, thereby exhibiting superior adsorption capacity (222.7 mg/g) for hippuric acid (HA, one typical protein-bound uremic toxin). The optimized SA-Q possessed outstanding adsorption capabilities (141.8 mg/g); more importantly, it could maintain a 95% removal rate even after 8 cycles, and also could selectively remove the diffused HA in the dialysate during hemodialysis, indicating its excellent operability and recyclability. This work demonstrated a promising strategy for constructing advanced adsorbents to eliminate uremic toxins from dialysate to facilitate the development and popularization of miniaturized hemodialysis equipment.
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APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Hang Li,Muhammad Mubeen,Jingbao Wang,Salman Khalid,Jingmao Zhao,Baomin Fan,Yiqian Lv,Mohammad Tabish,Haiqing Liu
Zn-Al-Mg coated steel (ZM-steel) has emerged as a preferred material in automotive and infrastructure applications, yet its long-term durability remains challenged by localized corrosion in chloride-rich environments. Herein, a sustainable and scalable corrosion protection strategy based on the in-situ formation of layered double hydroxide (LDH) films intercalated with benzothiazole (BTZ) was reported. By exploiting the controlled corrosion of ZM-steel surface in BTZ-containing NaCl solution, compact LDH architectures spontaneously formed, incorporating BTZ molecules within their interlayers. The resulting hybrid coating integrated the physical barrier effect of LDH with the release of BTZ anions, enabling interfacial passivation and sustained corrosion inhibition. Comparative electrochemical tests revealed that BTZ-containing NaCl solution yielded markedly enhanced corrosion-resistance as compared to NaCl solution or bare BTZ solution, with charge transfer resistance increasing from 9.44 × 10 2 to 9.13 × 10 4 Ω·cm 2 . Moreover, epoxy-overcoating effectively suppressed filiform corrosion (FFC) of ZM-steel substrate for over 35 days. Unlike conventional hydrothermal or carbonate-assisted routes for LDH fabrication, this precursor-free strategy proceeds under ambient conditions without additional reagents, underscoring its simplicity, efficiency, and scalability. These findings demonstrate that the moderate corrosion is beneficial to the formation of LDH on ZM-steel surface.
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ACS Applied Materials & Interfaces
·
2026
·
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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SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Ying Zhang,Ruohan Li,Wenying Sun,Wei Mao,Yibing Li,Lixun Zhang,Yuntao Guan
The pervasive contamination of tetrabromobisphenol A (TBBPA) presents a critical environmental challenge due to its persistence and resistance to conventional degradation. Although sulfidized nanoscale zero-valent iron (S-nZVI) represents a promising remediation avenue, its efficacy is severely constrained by particle agglomeration and insufficient mineralization capabilities. Here, we report a self-dissociation-assembly strategy to engineer a robust S-nZVI composite supported on Mg Al layered double oxides (S-nZVI@LDO) for the substantial removal of TBBPA. By modulating the precursor synthesis pathways, we demonstrate that the hydrothermal-derived LDO support (α-phase) creates a unique nanosheet architecture that facilitates superior dispersion of reactive Fe/S species compared to chemically precipitated counterparts. The optimized S-nZVI@LDO α composite achieves >95% TBBPA removal efficiency, with a debromination efficiency of 71% and a mineralization rate of 51%, significantly outperforming traditional composites. Mechanistic investigations reveal a synergistic pathway involving rapid electrostatic adsorption, reductive debromination driven by surface-bound Fe 0 , and oxidative mineralization via in-situ generated radicals. Furthermore, the catalyst exhibits improved stability and reusability over multiple cycles. This work elucidates the critical role of precursor structural evolution in catalyst design and provides a scalable, high-efficiency solution for the remediation of halogenated organic pollutants.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
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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INDUSTRIAL CROPS AND PRODUCTS
·
2026
·
IF 6.4
Menghan Li,Qianqian Zhang,Zhiying Lin,Qingcai Cai,Lu Luo,Jiawei Qiang,Jiuping Rao,Mizi Fan,Weigang Zhao,Qinzhi Zeng
Bamboo biomass was valorized into functional carbon microspheres for electrode design. • Bamboo-derived carbon induced self-assembly of Ni–Co–Mg hydroxide nanostructures. • Mg incorporation strengthened the LDH–carbon interaction and structural stability. • The optimized NCM@BC-20 electrode delivers 1226.8 F g −1 at 1 A g −1 . • The assembled ASC achieves 63.16 Wh kg −1 with 89.1% retention after 6000 cycles. Bamboo is an abundant and fast-growing lignocellulosic resource with considerable potential as a sustainable precursor for functional carbon materials. In this work, bamboo-derived carbon microspheres were employed to induce the self-assembly of Mg-modulated Ni-Co layered hydroxide heterostructures, forming a hierarchical composite electrode denoted as NCM@BC. During synthesis, the carbon microspheres acted not only as conductive supports but also as heterogeneous nucleation sites for hydroxide growth, leading to an open architecture that facilitated electrolyte penetration and charge transport. Meanwhile, Mg incorporation regulated the local coordination environment of the Ni-Co hydroxide phase and improved the structural stability of the layered framework during repeated redox reactions. As a result, the optimized NCM@BC-20 electrode delivered a specific capacitance of 1226.8 F g −1 at 1 A g −1 with favorable rate capability. Furthermore, the assembled asymmetric supercapacitor, using NCM@BC-20 as the positive electrode and activated carbon as the negative electrode, operated over a 1.6 V voltage window, achieved an energy density of 63.16 Wh kg −1 at 800 W kg −1 , and retained 89.1% of its peak capacitance after 6000 cycles. These results demonstrate that bamboo biomass can be converted into a value-added carbon component that not only directs heterostructure formation but also contributes to enhanced electrochemical performance, providing a practical route for the development of sustainable carbon-based electrode materials. Download: Download high-res image (228KB) Download: Download full-size image
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Advanced Science
·
2026
·
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
·
2026
·
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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JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2025
·
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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Materials
·
2025
·Vol. 18
·期 21
·4936
·
IF 3.2
Dan Qian,Yue Shen,Zhanli Geng,Binyu Zhao,Wandong Bai,Shiping Sun,Xiang Li,Jinbo Zeng,Shengdi Zhang,Yumin Wang,Xiufeng Ren
Driven by the demand for lightweight materials, magnesium has gained significant interest due to its abundance and low density. This study systematically investigated the effects of mechanical ball milling time and sintering temperature on the microstructure and mechanical properties of a powder-metallurgy-processed Mg-Al-Ti alloy. The results established a correlation between ball milling and sintering processes, demonstrating that regulating precursor powder characteristics effectively enhances sintering diffusion efficiency. By precisely controlling sintering temperature and powder particle size characteristics, the alloy achieved high density, hardness, and strength at relatively low temperatures, demonstrating comprehensive performance. Optimal properties were obtained at 420 °C sintering conditions: relative density of 98%, hardness of 172 HV, compressive strength of 367 MPa, and nanoscale Young’s modulus reaching 45.15 GPa. Further analysis indicated that intermetallic compounds formed during sintering contributed significantly to the hardness enhancement, with the strengthening mechanism primarily attributed to the synergistic effects of precipitation and solid solution strengthening. The work provides a theoretical basis for further development of high-performance materials by subsequent processing.
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Nano-Micro Letters
·
2026
·Vol. 18
·期 1
·94
·
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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