APPLIED CLAY SCIENCE
·
2024
·
IF 5.3
Yi Ye,Linxi Wang,Haiyan Li,Jianhong Luo
Oily wastewater has become one of the great threats to the environment. Membrane separation technology has become a research focus in wastewater treatment due to its advantages in environment protection, low sedimentation cost, low energy consumption and reusability. NPA/ZnMgAl-LDHs (NPA, nylon film material loaded with nano-TiO 2 particles, LDHs , layered double hydroxides) material based on nylon film material (PA) was synthesized using a two-step method. Various characterization methods confirmed the successful introduction of TiO 2 and ZnMgAl-LDHs. The testing of water contact angle (WCA) and underwater oil contact angle (UOCA) confirmed that the original PA substrate possesses hydrophobicity and lipophilicity. The superhydrophilicity and superoleophobicity of NPA/ZnMgAl-LDHs material were brought by the introduction of TiO 2 and ZnMgAl-LDHs. NPA/ZnMgAl-LDHs material shows stable and efficient separation efficiency (> 99%), and exhibits high separation flux in simple oil-water separation and oil in water emulsion demulsification. In addition, its separation efficiency is almost unaffected under environments of different pH, and the separation flux remains at a high level. The photocatalytic activity is another satisfactory result of NPA/ZnMgAl-LDHs material. Methyl orange solution was effectively degraded by NPA/ZnMgAl-LDHs material within 120 min, and the efficiency is up to 99.09%.
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Surfaces and Interfaces
·
2024
·
IF 5.7
Danping Wang,Erwei Cheng,Zhaoming Qu,Yingying Wang,Qingguo Wang
Ag thin films having attractive optical transmittance and effective shielding capability are usually used as a preferred choice for the transparent electromagnetic shielding windows. Whereas, the Ag films are grown primarily via an island growth (Volmer-Weber) mechanism, which greatly restricts its application. In this study, by introducing Al atoms and suitable annealing treatment, the continuous and smooth Ag thin films are successfully fabricated by magnetron co-sputtering method. The effect of annealing temperature on the microstructure, optical and electromagnetic shielding properties of the films are conducted the comprehensive and profound study. Our results indicate that the 5 mol% Al-Ag thin film annealed at 200 °C could transform into planar growth structure, and display excellent the highest optical transmittance 89.15 % at 550 nm. Meanwhile, the shielding effectiveness (SE) reaches a peak value of 28.1 dB. 500 °C is estimated as the threshold annealing temperature of Al-Ag thin film with comprehensive performances gradually declining. Moreover, the Al dopants significantly improve the thermal stability of Ag thin films than that of the pure Ag films. These findings are of important guidance for the preparation of high-quality Al-Ag thin films to meet the practical applications.
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Materials Today Communications
·
2024
·
IF 3.7
Jiahe Li,Fang Du,Changsheng Tang,Luyang Wang,Yulin Yang,Debin Xia,Jian Zhang,Bowen Tao,Ping Wang,Kaifeng Lin
Solid propellant containing Al-Li particles has attracted much attention because of the high combustion efficiency and effective absorption of HCl in burning tail smoke. However, the highly reactive Li has limited the application due to the lower stability and compatibility with HTPB. In this study, the chemically stable Al-5Li particles were fabricated by a thin organic layer, which was used by the dodecyltrimethoxysilane (DTMS) or 1H,1H,2H,2H-perfluorooctyltrimethoxysilane (FTMS) with the site-selective coating of active Al and Li. Meanwhile, the Li-F coordination bond also provides a deeper protection with the decrease of hygroscopicity with 39.08 % mass variation through the XPS test of Al-5Li@FTMS. The Al-5Li@FTMS and Al-5Li@DTMS particles had good stability and compatibility with HTPB to 1 or 2 degree and none pores or cracks on the cross section of propellant. Note here that the Al-5Li@FTMS and Al-5Li@DTMS propellants exhibited a shorter ignition delay time, higher peak flame temperature and smaller particle size of residue corresponded to Al propellant. Meanwhile, the burning rates of propellants had increased by 2.80 % and 0.93 %. Thus, the coating of FTMS is better than that of DTMS from the stability and combustibility. The micro-explosion characteristic of Al-5Li particles would provide higher combustion efficiency and performance. The feasible fabrication method would provide an relevant guidance for the stability and combustibility of alloy powders in solid propellant.
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LANGMUIR
·
2025
·
IF 3.9
Zhiying Nan,Hui Xu,Yanhua Liu,Yanan Jiao,Wenhao Li,Jianbin Zhang,Dianming Li,Libang Feng
Janus nanosheets have garnered significant attention in nanoscience due to their distinctive asymmetric structures and versatile applications. Traditional synthesis methods are often time-consuming and complex, emphasizing the urgent need for a simplified and environmentally sustainable synthesis method. Herein, a reactive template method was employed to fabricate amphiphilic alkyl-polytannin-Al3+ (alkyl-PTA-Al (III)) Janus nanosheets. This was achieved using self-assembling octadecylamine (ODA) bilayers as reactive templates. Due to the flexibility and multiple reactive groups of polytannins (PTA), alkyl-PTA-Al (III) Janus nanosheets were utilized as trapping agents for capturing polystyrene (PS) nanoplastics first in water, achieving a removal efficiency of 89.07%. By exploiting the singular anisotropic wettability of alkyl-PTA-Al (III) Janus nanosheets, they can self-assemble at oil–water interfaces, reducing interfacial tension and acting as promising solid surface emulsifiers capable of stabilizing emulsions for up to 180 days. Additionally, the surface functionalization of alkyl-PTA-Al (III) Janus nanosheets with Ag nanoparticles through in situ reduction effect of tannins enabled the catalytic reduction of p-nitrophenol at the emulsion interface, achieving a 99.30% conversion within only 8 min. This work presents a straightforward self-assembly method for creating amphiphilic alkyl-polyphenol Janus nanosheets, highlighting their potential environmental applications in nanoplastics capture, interfacial emulsification and catalysis.
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SOLAR ENERGY
·
2024
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IF 6
Zhuo Chang,Decheng Kong,Yunfeng Wang,Ming Li,Qingyun Li,Tarik Hadibi,Xudong Zhao
Thermochemical energy storage technology stands as a promising avenue to address the intermittent and fluctuating nature of solar energy. However, it poses significant challenges due to the inadequate adsorption performance of adsorbents and limited heat and mass transfer capacity. In this research, a composite adsorption heat storage material, denoted as AF-CNT-Mg, was successfully synthesized, demonstrating high water adsorption and excellent heat transfer capacity. This material was developed using aluminum fumarate (AF) and multiwalled carbon nanotubes (CNT) as a composite matrix, with magnesium sulfate acting as impregnated hygroscopic salt. The influence of CNT content and magnesium sulfate mass fraction on thermal conductivity and water adsorption properties was thoroughly investigated. Results indicate that increasing CNT concentration enhances heat storage performance while diminishing water adsorption performance. Consequently, an AF-CNT matrix with a CNT mass fraction of 0.2 wt% was chosen as the composite matrix. The texture and thermal properties of AF-CNT-Mg composites were analyzed through automated specific surface area and pore size analysis, scanning electron microscopy, thermogravimetry, and differential scanning calorimetry. Furthermore, the effects of varying concentrations of impregnated metal ions on water adsorption properties were explored. Interestingly, a significant enhancement in the water adsorption performance and heat storage capacity was observed. The energy storage density could reach 838.4 kJ·kg −1 , with a maximum water adsorption amount of 0.53 kgH 2 O·kg −1 . Overall, these findings demonstrate that incorporating CNT expansion and hygroscopic salt magnesium sulfate into the al-based metal–organic framework substantially improves the heat storage performance of the composite adsorption heat storage material. Such advancements hold promising implications for applications in solar thermal power generation systems.
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Journal of Material Cycles and Waste Management
·
2025
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IF 3
Lou Wen-bo,Liu Dong-yan,Zhao Da,Wang Yun,Sun Zi-cheng,Zou Yi,Niu Xiao-wei,Cheng Quan-guo,Li Jian-zhong,Liu Hong-hui
The recovery of NCM (LiNi x Co y Mn 1-x-y O 2 , abbreviated as NCM) cathode materials from retired lithium-ion batteries is a research hotspot in resource recycling field. Nevertheless, due to aluminum impurities mixed in raw materials, Li(I) and Al(III) ions are easy to combine to form water-insoluble LiAlO 2 during reduction, affecting Li(I) ions’ water-leaching efficiency. In this study, the LiAlO 2 formation environment is analyzed. Thermodynamic analysis reveals that there is generally less spontaneity in the reaction of Li (I) ions with aluminum monomers compared to Al 2 O 3 , and the introduction of CO 2 can inhibit Li-Al-O substance production. Li-Al binding experiments show that there is almost no direct reaction between Li 2 CO 3 and aluminum monomers, but under Ar atmosphere, Li 2 CO 3 and Al 2 O 3 can easily lead to Li-Al binding, a kinetic analysis considers that binding is controlled by chemical reaction, with an activation energy of 57.78 kJ/mol, and the activation energy increases to 88.028 kJ/mol with CO 2 atmosphere. Under reduced optimization conditions (reduction temperature: 500 °C, time: 6 h, and m NCM : m Al = 1: 0.25), the carbonation water-leaching efficiency can reach 95.1% for Li(I) ions and less than 1% for Ni(II), Co(II), Mn(II), and Al(III) ions. Thus, this work offers a theoretical basis for the industrial Li(I) ions’ recovery from aluminum-containing NCM materials.
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Nature Communications
·
2025
·Vol. 16
·期 1
·1-12
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IF 15.7
Tian Momang,Meng Ke-Juan,Xiong Kunyu,Hussain Iftikhar,Ma Xinwen,Zhang Kaili
Nanothermite has gained significant attention for its exceptional energy release rate and reactivity, making it a promising material for energetic applications. However, nanoparticle agglomeration significantly hinders its energy release efficiency. To overcome this challenge, we developed an innovative bottom-up strategy and a straightforward preparation method to construct a hierarchical Al/CuO/V 2 C nanocomposite. This is achieved through the ordered self-assembly of Al and CuO nanoparticles in an ethanol suspension, using V 2 C MXene as a template. Our findings show that the Al/CuO/V 2 C nanocomposite exhibits distinct morphologies based on V 2 C concentration: nanosheets at lower concentrations and microspheres at higher concentrations. CuO and Al nanoparticles form the first and second layers outside the V 2 C, respectively, due to the interplay between electrostatic forces and covalent Cu-O-V bonds. This unique structure, along with high reactivity of V 2 C, enables complete Al oxidation, achieving a heat release of 3156.2 J g -1 with a 10 wt% V 2 C addition—seven times greater than the Al/CuO control group. The concentration-dependent structure allows for tunable energetic performance, from a rapid 3-ms deflagration to a prolonged 16-ms combustion. Reduced gas release enhances safety, paving the way for applications in microinitiators and advancing nanothermite technology.
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ACS Applied Energy Materials
·
2025
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IF 5.5
Zhu-Yu Li,Le-Ran Li,Tong Wu,Qi Niu,Bing Zhang,Ji Liu,Kai Li,Qiang Lu
Calcium-looping-based thermochemical energy storage (TCES) technology can be embraced for peak load shifting in renewable energy generation systems. However, the energy storage properties of Ca-based materials rapidly decay after multiple cycles. In this study, a synergistic strategy involving pyroligneous acid impregnation and Mn–Co–Al incorporation was developed to improve the pore structure, enhance the oxygen vacancy concentration, and boost antisintering performance of the calcium-based composites, thereby significantly improving their TCES properties and cyclic durability. The modified CaO-based composites were systematically analyzed using various characterization methods to evaluate their heat storage performance, sintering resistance mechanism, and physicochemical properties. Characterization results revealed that the codoped sample with Ca:Mn:Co:Al = 100:12:4:5 (PACa-Mn12Co4Al5) possessed a loose and porous surface with a measured specific surface area of 13.72 m2/g, providing channels for CO2 diffusion into the inner particles. Ca3CoMnO6 and Ca3Al2O6, acting as inert supports, were uniformly distributed in PACa-Mn12Co4Al5, effectively mitigating sintering. The addition of Mn–Co–Al strengthened the basicity and promoted oxygen vacancy formation in PACa-Mn12Co4Al5. The oxygen vacancies encouraged the formation of ion diffusion channels, reducing the O2– transport resistance across the surface and within the bulk of PACa-Mn12Co4Al5, thereby improving the reaction activity and conversion efficiency. PACa-Mn12Co4Al5 demonstrated excellent heat storage performance under calcination at 750 °C and carbonation at 850 °C. After 40 and 100 cycles, its energy storage density remained at 97.29% and 84.65% of the initial value (1212.79 kJ/kg), respectively. Moreover, the average radiation absorptance of PACa-Mn12Co4Al5 reached 59.85%, 5.26 times that of limestone-based CaO. Therefore, PACa-Mn12Co4Al5 is a promising heat storage material, providing guidance for the industrial application of Ca-based TCES materials.
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APPLIED CATALYSIS B-ENVIRONMENTAL
·
2025
·
IF 21.1
Zhidong Wei,Jiawei Yan,Yuchen Zhang,Jiasheng Chi,Huoshuai Huang,Junying Liu,Jianli Mi,Linlin Ma,Wenjian Fang,Wenfeng Shangguan,Zhen Huang
Modulation of the built-in electric field was one of the effective strategies to enhance the separation of photogenerated carriers. Herein, corner-cut nano-cubic Al: SrTiO 3 was synthesized via the stoichiometric SrCl 2 molten salt regulation strategy. Notably, a rare phenomenon of stacking fault effect in SrTiO 3 , induced by Al 2 O 3 phase transition doping, was discovered. This phenomenon could serve as an effective approach for modulating the built-in electric field within Al:SrTiO 3 , and the photocarrier lifetime could be prolonged to exceed 2500 ps after investigated by the femtosecond ultrafast spectroscopy, which could be ascribed to the hole capture by Al 3+ through TiO 6 polarizability regulation. Consequently, compared to samples without stacking fault effect, the optimized Al: SrTiO 3 photocatalysts demonstrated an enhanced STH efficiency increasing from 0.15 % to 0.5 %. This work revealed the phenomenon of stacking fault effect in nano-photocatalysts and proposed insights into the mechanisms of the built-in electric field regulation through microstructure polarization.
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MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
·
2025
·
IF 7
Ming Yang,Zhenyu Wei,Ruifen Guo,Tong Che,Ping Shen
The performance comparison between uniformly dispersed and bioinspired architectures in metal matrix composites has long been limited by the absence of rigorously controlled experimental validation. To address this gap, this study employed a carbon fiber-assisted gelcasting method to fabricate crack-free, low-volume-fraction (31.2 vol.%) uniform SiC preforms. They were compared against laminated SiC preforms (∼30 vol.%) prepared via freeze casting, with both architectures densified by aluminum infiltration under identical conditions. The results demonstrate that the laminated structure achieves a remarkable strength–toughness synergy, with its flexural strength and fracture toughness enhanced by 7.3% and 18.2%, respectively, compared with the uniform structure. This improvement is attributed to a transition in the toughening mechanism from an intrinsic to an extrinsic mechanism dominated by crack bridging, highlighting that spatial configuration constitutes a critical performance-regulating dimension beyond traditional compositional design, and offering a new paradigm for the development of high-performance composites.
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SENSORS AND ACTUATORS B-CHEMICAL
·
2025
·
IF 7.7
Ruijie Xu,Xingyao Li,Xiaolun Peng,Junhui Xu,Yazhen Wang
In this paper, two Al-MOFs, named as MIL-53(Al) and NH 2 -MIL-53(Al), have been synthesized using aluminum ions as metal center and terephthalic acid, 2-aminoterepthalic acid as organic ligands in aqueous medium, respectively. Then, these two materials were utilized to construct the electrochemical sensor for the detection of neohesperidin dihydrochalcone (NHDC). The X-ray diffraction (XRD), scanning electron microscopy (SEM), fourier transformation infrared spectra (FT-IR), brunauer-emmett-teller (BET) and X-ray photoelectron spectra (XPS) were used to characterize the microstructure and morphology of two Al-MOFs materials. Compared with the MIL-53(Al) modified electrode, the NH 2 -MIL-53(Al) electrode proved a superior catalytic effect for the redox of NHDC. Thereafter, the electrochemical redox behavior and mechanism of NHDC at the NH 2 -MIL-53(Al) modified electrode were evaluated by cyclic voltammetry (CV), and the adsorption mechanism between the NH 2 -MIL-53(Al) materials and NHDC was revealed by density functional theory (DFT) calculations. Under the optimal detection conditions, a fast and sensitive strategy for detecting NHDC was constructed by differential pulse voltammetry (DPV). The linear range of NHDC based on this method was 0.08–30.0 μmol/L with R 2 = 0.9969. The low limit of detection (LOD) is 17.2 nmol/L for NHDC. Additionally, the NH 2 -MIL-53(Al) modified electrode demonstrated its applicability to the determination of NHDC in mud film samples with recoveries of 98.6–99.9 %. The consequences were in great accordance with high-performance liquid chromatography (HPLC), implying the feasibility of the proposed method for the detection of NHDC in actual samples.
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CARBOHYDRATE POLYMERS
·
2025
·
IF 12.5
Wenyue Yu,Huan Guo,Ya Liu,Yangyu Zhou,Yue Xiao,Jinrong Bai,Yanping Wu,Kai Zhong,Yina Huang,Hong Gao
High fluoride intake from tea consumption poses significant health risks, necessitating the development of defluorination adsorbents in the food industry. Defluorination from tea is particularly challenging due to the requirements for high adsorption efficiency, preservation of sensory quality, and high recovery rates of the adsorbents. In this study, we introduced an innovative aerogel bead, CMC-Al/HAP, which integrates hydroxyapatite (HAP) into a carboxymethylcellulose (CMC) sphere crosslinked with aluminum chloride through a green and straightforward process. Our results demonstrated that CMC-Al/HAP achieved a remarkable fluoride adsorption capacity of 23.51 ± 0.46 mg/g. Subsequently, we investigated the impact of various adsorption parameters, kinetics, isotherms, coexisting anions, and recycling potential on the adsorption behavior of the beads. The adsorption kinetics followed the pseudo-second-order and dubinin-radushkevich models, while the Langmuir isotherm provided a good fit for the adsorption data. Characterization studies conducted before and after adsorption indicated that the adsorption mechanism mainly involved ion exchange and electrostatic interactions. Notably, CMC-Al/HAP effectively reduced fluoride levels in brick tea infusions without affecting quality such as tea color, catechins, and aroma. These findings underscore the potential of CMC-Al/HAP aerogel beads as a practical defluorination solution, providing valuable insights into alternative methods for defluorination in the tea industry.
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