ENVIRONMENTAL RESEARCH
·
2026
·
IF 8.2
Zhouxiao Zhai,Jingce Bi,Linshan Wang,Ningning Liu,Yi Wang,Xia Zhang,Zhuopeng Wang,Yide Han
Mesoporous molecular sieve-supported metals have been widely investigated as catalysts for the removal of tetracycline (TC) from water via a “preconcentration-activation-degradation” catalytic system. However, the design and construction of bimetallic catalysts supported on MCM-41 for TC degradation remains a challeng. In this study, highly dispersed Al-Fe 3 N species within MCM-41(Al-Fe 3 N/Al-MCM-41) was successfully prepared, where Al originates from Al-MCM-41 subjected to high-temperature dealumination. In the presence of Al-Fe 3 N/Al-MCM-41 and PDS, 98.5% of TC was efficiently degraded within 60 min. The corresponding reaction rate constant (0.07262 min −1 ) was 2.92 times that of Fe 3 N/MCM-41 (0.02486 min −1 ). The excellent degradation performance is attributed to the enhanced electron cloud density of Fe induced by Al doping, thereby enhancing the activation efficiency of peroxydisulfate (PDS). At the same time, micro–mesoporous structure in Al-Fe 3 N/Al-MCM-41 is beneficial to preconcentration of target contaminants for the enhancement of degradation efficiency. In addition, the disinfection performance of Al-Fe 3 N/Al-MCM-41 system against antibiotic-resistant bacteria and its device-level application were explored. This work provides a novel strategy to fabricate MCM-41 with doping Fe 3 N species for the water treatment. This strategy provides a new perspective for the rational utilization of Al atoms via high-temperature dealumination method.
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Journal of Materials Research and Technology-JMR&T
·
2026
·
IF 7.3
Yunjia Hu,Renli Fu,Zeya Huang,Meng Meng,Jindan Tian,Xing Gao,Yunan Liu
This study developed a soldering process for joining Al to Cu-metallized ceramic substrates, aiming to overcome the formation of brittle intermetallic compounds in Sn-based solders, which usually lead to low joint strength. Zn foils coated with Sn-10Zn or Sn-20In solders were used as hybrid solders to bond Ni-plated Al components to Cu-metallized Al 2 O 3 substrates at 220 °C. With increasing soldering time, the solder on the Zn surface gradually transformed into NiZn 3 , and the formation mechanism of the NiZn 3 phase was analyzed from thermodynamic and kinetic perspectives. The shear strength of the joints increased with prolonged soldering times, reaching a maximum of 67 MPa for the Sn-10Zn/Zn solder at 240 min. In the Sn-10Zn joints, NiZn 3 formed a continuous transition layer that effectively reduced stress concentration. In contrast, the Sn-20In/Zn joints showed discontinuous NiZn 3 layers and significant interfacial stress, resulting in lower shear strength.
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PLANT PHYSIOLOGY AND BIOCHEMISTRY
·
2026
·
IF 6.2
Su Li,Qi Jiang,Yong Qiang Gao,Ren Fang Shen,Qing Song Zheng,Xiao Fang Zhu
Aluminum (Al) toxicity in acidic soils significantly limits crop productivity by inhibiting root growth and nutrient uptake. Brassinosteroid (BR), a key plant hormone, has emerged as a crucial regulator of stress tolerance. This study investigates the role of BR in mitigating Al toxicity in rice ( Oryza sativa ) and explores the interplay between BR and gibberellic acid (GA) under Al stress. Our results show that Al stress rapidly elevates endogenous BR level in rice roots, which alleviates Al-induced root growth inhibition. Specifically, 0.01 μM BR achieves a maximum remission rate of approximately 20% for Al-induced root growth inhibition. BR application significantly reduced Al accumulation in root tips (by approximately 25%) and cell walls, particularly by inhibiting the overexpression of XYLOGLUCAN ENDO TRANSHYDROLASE/GLUCOSYLASE 5/9/11/19 ( OsXTH5/9/11/19 ), which reduces Al binding in hemicellulose fractions and upregulating Cellulose synthase A catalytic subunit 4/7/9 ( OsCesA4/7/9 ) to enhance cell wall’s barrier function against Al. BR also modulates hemicellulose composition and suppresses the expression of the Al transporter gene Nramp aluminum transporter 1 ( OsNRAT1 ), thereby reducing Al uptake into root tip cells. Additionally, BR mitigates Al toxicity via the GSK3/SHAGGY-Like KINASE 2 ( OsGSK2 )-mediated BR signaling pathway: OsGSK2 overexpression lines ( OsGSK2-OE ) exhibit enhanced Al resistance, while RNAi lines ( OsGSK2-RNAi ) show increased Al sensitivity. Furthermore, BR upregulates key expansin genes ALPHA-EXPANSIN 1/4/7 ( OsEXPA1/4/7 ) and BETA-EXPANSIN 2 ( OsEXPB2 ), which promotes root growth under Al stress. Notably, under Al stress, BR enhances endogenous GA levels through the transcription factor BRASSINAZOLE RESISTANT 1 ( OsBZR1 ): Al represses OsBZR1 expression, which is rescued by BR treatment. This process involves upregulating GA biosynthetic genes such as OsGA20OX , restoring Al-suppressed gene expression, and mitigating Al-induced OsGA2OX overexpression to maintain GA homeostasis. Exogenous GA treatment mimics BR’s alleviatory effects, highlighting critical crosstalk between the BR and GA pathways. This study provides novel insights into BR-mediated Al detoxification, revealing a key BR-GA interaction that enhances Al tolerance in rice and offers potential for improving crop resilience in acidic soils.
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Carbon Resources Conversion
·
2026
·
IF 10.9
Zhixing Li,Fei Wang,Yanchao Liu,Jinghong Ma,Kai Bian,Xinwei Zhang,Yanze Du,Ruifeng Li
The efficient conversion of C 9 heavy aromatics into high-value benzene, toluene, and xylenes (BTX) products is essential for optimizing petroleum refining. This process often depends on both diffusion and the unresolved relationship among structure, acidity, and reactivity of zeolite catalysts. This study focuses on the intracrystalline micro-/ meso -pores in ZSM-5 and decouples the interdependent effects of crystalline morphology and Al distribution of Brønsted acid sites (BAS) in ZSM-5 on C 9 aromatic conversion pathways. The hierarchical ZSM-5 catalysts have the identical SiO 2 /Al 2 O 3 ratios (SAR) and the different distribution of framework Al-species. This dominates the acid distribution of the zeolites and catalytic performances of the catalysts in C 9 aromatic reaction. In toluene/trimethylbenzene (TMB) transalkylation, the hierarchical porosity coupled with reduced crystallite size of the ZSM-5 enhances 1,2,4-TMB conversion by 24.4% and xylene selectivity by 17.9% versus conventional microporous ZSM-5. The product distribution is positively correlated to the concentration of Al atoms localized at channel intersections of the ZSM-5. Diffusion-decoupled experiments demonstrated acid site spatial configuration in the ZSM-5 governs the reaction pathway selection, with aluminum enrichment at channel intersections favoring transalkylation over disproportionation. The hierarchical ZSM-5 in submicron with intracrystalline mesopores and enriched intersection-channel aluminum favors transalkylation of C 9 aromatics to BTX. The hierarchical ZSM-5, with submicron crystallites, intracrystalline mesopores, and enriched intersection-channel aluminum, enhances transalkylation of C 9 aromatics to BTX.
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APPLIED THERMAL ENGINEERING
·
2026
·
IF 7.5
Sen Liu,Mi Li,Zhanjun Yang,Matko Erceg,Lin Jiang
Inert silica is repurposed as a potent modifier for Al-Mg/AP energetic composites. • 5 wt% SiO 2 reduces ignition delay by 35% and increases maximum flame area by 226%. • Optimal SiO 2 loading boosts pressurization rate by 126% in closed vessel tests. • 9 wt% SiO 2 reduces AP decomposition activation energy by 78 kJ/mol. Silica (SiO 2 ) is generally regarded as a chemically inert and low-cost material that is widely present in natural minerals and daily life. In conventional energetic formulations, SiO 2 is rarely considered an active component because of its high thermodynamic stability and low thermal conductivity. Herein, we demonstrate that mesoporous SiO 2 can serve as an effective reactive additive in Al-Mg/ammonium perchlorate (AP) energetic composites, participating in high-temperature aluminothermic reactions and regulating the overall energy-release behavior of the system. In this work, AP/SiO 2 precursor particles were prepared by spray drying, followed by solvent-assisted assembly with Al Mg alloy powder to obtain Al-Mg/(AP/SiO 2 ) composite energetic materials with different SiO 2 contents. The morphology, phase structure, combustion behavior, pressure output, thermal decomposition characteristics, evolved gaseous products, and post-combustion residues were systematically investigated using SEM, EDS, XRD, high-speed imaging, infrared thermography, closed-bomb pressure testing, TG-DSC, and TG-IR analyses. The results reveal that the introduction of mesoporous SiO 2 markedly alters the decomposition behavior of AP, promotes gas evolution, enhances ignition and combustion propagation, and modifies the condensed-phase reaction pathway of the Al-Mg/AP system. These effects are attributed to the combined roles of mesoporous confinement, surface silanol-assisted AP decomposition, local hotspot formation, and the participation of SiO 2 in aluminothermic reactions. This study provides new insight into the unconventional role of inert oxides in energetic combustion systems and offers a low-cost strategy for designing alternative multifunctional reactive additives and regulating energy-release mechanisms in metal-based energetic materials. Download: Download high-res image (182KB) Download: Download full-size image
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ACS Applied Materials & Interfaces
·
2026
·
IF 7.8
Dong-Gyu Lee,Baoling Huang,Qing Chen
Metal foils that alloy with lithium have attracted renewed interest as the issue of continuous solid-electrolyte interphase (SEI) growth can be effectively addressed with solid-state electrolytes (SSEs). However, an impractically high pressure is required to maintain the contact between the foils and inorganic SSEs. Here, we show that a soft polymer solid electrolyte can also alleviate the issue of SEI growth for an Al foil anode at a practically low pressure. Unlike liquid electrolytes, the polymer PVDF-HFP does not infiltrate pits and pores formed during Al lithiation, leading to a more uniform reaction and insignificant SEI growth deep in the anode, as shown by microstructural and compositional analyses of both the surface and the cross section of the anode. It thereby significantly boosts the Coulombic efficiency and the cycling stability of the Al foil anode compared to its liquid counterpart. The work unveils a new path to stabilize alloy anodes for safe, inexpensive solid-state batteries.
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Environmental Science-Nano
·
2025
·
IF 5.1
Heping Chen,Hang Zhang,Xiaojian Wang,Wenjie Luo,Jialin Zheng,Kang Liu,Junwei Fu,Hongmei Li,Zhang Lin,Liyuan Chai,Nan Hu,Min Liu
Aluminum (Al)-based catalysts are the most widely used materials for CF4 catalytic hydrolysis, where three-coordinated Al (AlIII) active sites play a pivotal role in C–F bond activation. The limited proportion of AlIII active sites in conventional Al-based catalysts suppresses their catalytic activity, thereby requiring high temperatures to achieve complete CF4 decomposition. In this work, we developed a Co-modified strategy to enhance CF4 hydrolysis performance by increasing the proportion of AlIII active sites. Structure characterization revealed that Co modification significantly raised the proportion of AlIII sites from 2% (pure Al2O3) to 13%. Temperature-programmed desorption (TPD) analysis showed that the 0.1Co/Al2O3 catalyst exhibits a CF4 adsorption capacity that is 2.0 times higher than that of unmodified Al2O3. Furthermore, in situ diffuse reflectance infrared Fourier-transform spectroscopy (DRIFTS) detected a 2 cm−1 red shift in the characteristic C–F bond peaks on the 0.1Co/Al2O3 catalyst, indicating enhanced C–F bond activation. As a result, the 0.1Co/Al2O3 catalyst achieved 100% CF4 decomposition at 580 °C for over 170 hours, significantly outperforming pure Al2O3 (58% and 20 hours). This work opens up a new approach for developing highly efficient catalysts for CF4 hydrolysis at low temperatures.
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Fuels
·
2025
·Vol. 6
·期 4
·76
·
IF 2.8
Jun Hu,Hongyang Yu,Yanan Wang
The chemical looping steam reforming of methane (CLSR) employing Fe-containing oxygen carriers can produce syngas and hydrogen simultaneously. However, Fe-based oxygen carriers exhibit low CH4activation ability and cyclic stability. In this work, oxygen carriers with fixed Fe content and different Fe/Ni ratios were synthesized by the sol–gel method to investigate the effects of Ni-Fe-Al interactions on CLSR performance. Ni-Fe-Al interactions promote the growth of the spinel structure and regulate both the catalytic sites and the available lattice oxygen, resulting in the CH4conversion and CO selectivity being maintained at 96–98% and above 98% for the most promising oxygen carrier, with an Fe2O3content of 20 wt% and Fe/Ni molar ratio of 10. The surface, phase, and particle size were kept the same over 90 cycles, leading to high stability. During the CLSR cycles, conversion from Fe3+to Fe2+/Fe0occurs, along with transformation between Ni2+in NiAl2O4and Ni0. Overall, the results demonstrate the feasibility of using spinel containing earth-abundant elements in CLSR and the importance of cooperation between oxygen release and CH4activation.
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FUEL
·
2025
·
IF 7.5
Xuwen Wang,Jian Zhang,Hao Bai,Changsheng Tang,Jiayan Liang,Zhe Shi,Kaifeng Lin,Debin Xia,Bowen Tao,Fang Du,Yulin Yang
The combustion of aluminum in solid propellants is inherently hindered by its surface oxide shell, leading to ignition delay, particle agglomeration, and low combustion efficiency. Herein, an onion-structured Al@Na 3 AlF 6 @AP composite is synthesized via a two-step evaporation-induced self-assembly process, sequentially depositing cryolite (Na 3 AlF 6 ) and ammonium perchlorate (AP) onto the aluminum surface. The Na 3 AlF 6 interlayer functions as a temperature switch inducing the transformation of the Al 2 O 3 into Al 6 NaO 9.5 at 700 °C and simultaneously exposing the active aluminum core. Therefore, the oxidation efficiency of Al@Na 3 AlF 6 is as high as 96.75 %, significantly surpassing the values achievable by pure aluminum and conventional aluminum alloys. Furthermore, the AP-encapsulated structure of Al@Na 3 AlF 6 @AP constructs a self-sustaining oxygen supply network during aluminum combustion and reduces the diffusion time of oxidative gases to the aluminum surface by 29.6 %. As a result, the size of aggregates during Al@Na 3 AlF 6 @AP combustion is approximately 10 μm, and the combustion heat (19.532 ± 0.133 MJ kg −1 ) is 8.4 % higher than that of the physically mixed sample Al@Na 3 AlF 6 /AP. The unique onion structure and Na 3 AlF 6 “Temperature Switch” both fundamentally reshape combustion kinetics, shifting the rate-limiting step from oxygen diffusion to aluminum oxidation activation.
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ACS Omega
·
2026
·
IF 5.2
Liyuan Wang,Bingbing Lai,Xiaoyu Wang,Bo Dai,Yujuan Zhang,Wenjing Lou
Traditional bentonite grease suffers from inadequate tribological properties. Layered double hydroxides (LDHs) have great potential as lubricant additives owing to their unique lamellar structure, tunable chemical composition, and high anion-exchange capacity, which enable strong interfacial interactions and stable dispersion in lubricating media. In this study, Mg Al-layered double hydroxide (MA-LDH) was synthesized as a crystalline lamellar compound with a controllable morphology and particle size. MA-LDH was prepared under hydrothermal conditions at pH 8–12 and 120–180 °C. The effects of MA-LDH synthesis conditions and additive concentration on the properties of bentonite grease were systematically investigated. Scanning electron microscopy revealed that the particle size distribution of MA-LDH became increasingly nonuniform as the pH and hydrothermal temperature increased. MA-LDH synthesized at pH 10 and 120 °C exhibited excellent particle size uniformity and dispersibility. Within the investigated additive range (0.1–12 wt %), an MA-LDH concentration of 1.5 wt % produced the best tribological performance. Compared with the base bentonite grease, the grease containing 1.5 wt % MA-LDH showed a 34.2% reduction in average coefficient of friction, an 89.2% decrease in wear volume, and a 150% increase in load-carrying capacity. The incorporation of MA-LDH optimizes load distribution, facilitates interfacial sliding, and enhances the film-forming ability, thereby improving the tribological performance of the bentonite grease.
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CERAMICS INTERNATIONAL
·
2026
·
IF 6
Xiongying Wu,Fuyu Li
As microwave communication technology advances toward higher frequencies, greater integration, and enhanced adaptability to extreme environments, dielectric materials are required to balance the “ ε r - Q × f - τ f ” parameters. The influence and mechanisms on the phase, microstructure, and microwave dielectric properties of Al-doping LaBO 3 ceramics are systematically investigated. The LaB 1- x Al x O 3 (0≤ x ≤ 0.08) ceramics were synthesized via the solid-state reaction method. Through first-principles calculations and characterization techniques (XRD, SEM, Raman spectroscopy), the optimization mechanism of Al doping on the microwave dielectric properties of LaBO 3 ceramics has been successfully elucidated. The results indicate that the addition of Al 3+ promotes the formation of LaAlO 3 second phase. This process significantly enhances the densification and grain growth of the ceramic. The best microwave dielectric properties achieved are: ε r = 13.4, Q × f = 78991 GHz, τ f = −26.5 ppm/°C. This work elucidates the physical mechanism by which Al doping synergistically optimizes the microwave dielectric properties of LaBO 3 ceramics through multiple mechanisms.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2026
·Vol. 37
·期 15
·1203
·
IF 3.2
Zhang Xiaoru,Luo Laima,Song Jing,Han Mingming,Sun Hongqian,Cao Lei,Wu Yucheng
A solvent-free strategy combining dry ball milling and calcination is developed to fabricate an Al-Y co-doped ZrO 2 (Al-YSZ) coating on LiNi 0.8 Co 0.1 Mn 0.1 O 2 (NCM811) cathodes. Structural characterizations confirm Al-YSZ induces NCM811 lattice expansion (unit cell volume + 0.00026 nm 3 ) and reduces cation mixing ( I (003) / I (104) = 1.621). TEM shows a ~ 50 nm coating with intimate matrix contact. Electrochemically, it delivers 218.9 mAh/g at 0.1 C (21.7% higher than pristine), retains 161.5 mAh/g after 200 cycles at 1 C, and exhibits superior stability under 4.5 V (137.3 mAh/g after 200 cycles), 45 ℃ (64.5% retention), and 5 C (86.0% retention). Mechanisms involve enhanced interfacial stability, optimized Li + kinetics (diffusion coefficient 2.21 × 10 −12 cm 2 /s after cycling), and mitigated structural degradation. This scalable green strategy advances high-nickel cathode optimization.
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危险品化学品经营许可证（带存储）