KOREAN JOURNAL OF CHEMICAL ENGINEERING
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2025
·
IF 3.2
Liu Xilin,Yang Fuwei,Yao Zhiqian,Wang Xuan,Liu Pengfei,Li Jiayin,Zhou Hu
Immobilizing the activator on the carrier is an effective strategy to solve the difficult recovery and secondary pollution of activator in advanced oxidation process. In this study, cobalt–aluminum-layered double hydroxide (activator) was immobilized on a PU membrane carrier (Co–Al-LDH@PU membrane) by a hydrothermal in situ growth technique to form a recyclable peroxymonosulfate (PMS) activator. The as-prepared Co–Al-LDH@PU membrane exhibited an excellent ability to activate PMS for the removal of tetracycline hydrochloride (TC). 97.20% of TC (30 mg L −1 ) was eliminated with Co–Al-LDH@PU membrane (3 × 3 cm 2 ) and 1.6 mM PMS at pH 5.5 in 30 min. Singlet oxygen ( 1 O 2 ) was verified as dominant reactive oxygen species responsible for TC removal via quenching tests. Mechanism investigation suggested that the redox cycle of Co 2+ /Co 3+ on the surface of Co–Al-LDH@PU membrane was crucial for PMS activation. Meanwhile, Co–Al-LDH@PU membrane displayed the ideal reusability and versatility.
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高影响因子
MICROPOROUS AND MESOPOROUS MATERIALS
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2025
·
IF 4.7
Xingyang Li,Dandan Zhang,Quanwei Zheng,Jiakui Chang,Xuan Liu,Renchun Yang,Meng Pan
In industry, it is highly desired to prepare Al-rich hierarchical zeolites by conventional alkali treatment without the use of costly chemical and special process. Here we provide an alternative strategy in which crystal defects are employed as mesopore directing agents. The effective elimination of the intracrystalline defects induces the generation of mesoporous structure in the alkali treatment process. Thus, the limitation originating from the framework Si/Al ratio of parent zeolite is circumvented. This strategy holds all merits of the conventional alkali treatment approach, which is industrially unfavorable. As an example, the Al-rich hierarchical ZSM-5 zeolites with very low Si/Al ratios were successfully prepared. The obtained Al-rich hierarchical zeolites were characterized by XRD, XRF, SEM, TEM, N 2 adsorption-desorption, in-situ IR, MAS NMR and NH 3 -TPD. The results showed that Si/Al ratios of the prepared hierarchical ZSM-5 zeolites were around 10 and the increases of external surface area and mesoporous volume were up to 2.6 and 3.7 times respectively in comparison with parent zeolite. Moreover, the constructed mesopores were interconnected open channels. In the catalytic cracking of 1,3,5-triisopropylbenzene, the Al-rich hierarchical ZSM-5 zeolites exhibited an excellent performance because of the improved diffusion of reactant and product.
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高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2024
·Vol. 107
·期 10
·6821-6832
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IF 3.5
Huihui Zhang,Guocheng Ma,Haibo Wu,Ming Yuan,Xuejian Liu,Zhengren Huang
SiC-based porous ceramic wave-absorbing materials have attracted much attention due to their excellent properties such as low density, high-temperature resistance, and oxidation resistance. In this work, the impedance matching of SiC ceramics is improved by introducing Si 3 N 4 wave-transparent phase, and the dielectric loss capability of SiC ceramics is enhanced by introducing FeSi wave loss phase. To achieve a balance between impedance matching and absorption loss in porous ceramics, different molar contents of Al were introduced into FeSi to tailor electromagnetic parameters. The effects of introducing FeAl x Si 1− x on the phase composition, microstructure, dielectric loss, and microwave absorption mechanism of SiC–Si 3 N 4 porous ceramics were systematically investigated. When FeAl 0.25 Si 0.75 is added, the minimum reflection loss of the porous ceramics is as low as −58.02 dB, and the flexural strength is as high as 87.23 MPa. The presence of Al promotes the transformation of the Si 3 N 4 crystal and the generation of Al 2 O 3 . The introduction of FeAl 0.25 Si 0.75 into SiC–Si 3 N 4 has constructed “inductor–capacitor–resistance” microcircuit, which enhances polarization loss, conductivity loss, and magnetic loss, and realized the double enhancement of the mechanical and wave-absorbing properties of porous ceramics.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Bolong Jiang,Yuhan Zhang,Huan Wang,Kun Liu,Nan Jiang,Jiayou Li,Hua Song,Yanguang Chen
Hydrodeoxygenation (HDO) plays a crucial role in upgrading pyrolysis-oil derived from biomass. Here we describe a method for fabricating a carbon-encapsulated nickel metal–acid bifunctional catalyst (Ni@C/RCS-Al) supported on aluminum-doped radial channel silica (RCS-Al). This catalyst exhibits a large surface area and highly dispersed accessible active sites, achieved through a combination of salicylate- and MOF-assisted strategies. The RCS-Al was prepared by a one-pot salicylate-assisted hydrothermal method in an aqueous phase containing an Al source, which is simple, has a high yield, and saves time. The results show that Ni@C/RCS-Al displays a well-defined radial channel pore structure with a mesopore diameter of 31.1 nm, which can significantly increase the number of accessible active sites and accelerate mass transfer. The MOF-assisted strategy leads to the formation of highly dispersed smaller carbon-encapsulated nickel nanoparticle active sites, and Al doping contributes to the adjustable acid sites, demonstrating that Ni@C/RCS-Al is a metal–acid bifunctional catalyst. Importantly, the kinetics study revealed a high reaction constant for the constructed Ni@C/RCS-Al catalyst. Ni@C/RCS-Al demonstrates remarkable performance in HDO, achieving complete m -cresol conversion and 100 % selectivity to the target product methylcyclohexane within a brief period of 75 min (T = 250 °C p = 2 MPa, m-cresol/catalyst (g) = 7.5). This exceptional performance stems from its radial channel pore structure and optimization of metal–acid sites. The thin carbon layer on the Ni surface contributes to its superior stability and water resistance, as verified by an experimental study and DFT calculations. This work opens up a new idea for the application of radial channel silica-supported catalysts in various reactions.
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高影响因子
JOURNAL OF ELECTRONIC MATERIALS
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2025
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IF 2.5
Xu Yang,Hu Changyi,Zhou Shenggang,Han Zhaohui,Chen Binbin,Xiao Bei
Anode material is critical for zinc electrowinning, and the selection and preparation of electrode materials are a focal point in hydrometallurgical research. In the present work, an Al/TiB 2 -Ti 4 O 7 /PbO 2 composite anode was fabricated through a combination of plasma spraying and electrodeposition. The morphology and structure of the TiB 2 -Ti 4 O 7 middle layer and PbO 2 active layer were investigated by scanning electron microscopy and x-ray diffraction. Linear sweep voltammetry, Tafel polarization curves, and electrochemical impedance spectroscopy were used to analyze the catalytic activity and corrosion resistance of the composite anode. COMSOL Multiphysics software was used to simulate the electric field distribution of each element in the electrowinning cell. The results demonstrated that a dense and uniform layered structure, along with robust interfacial bonding, was essential for minimizing the interface resistivity and enhancing the corrosion resistance of the Al/TiB 2 -Ti 4 O 7 matrix. The coating optimized at a current of 630 A exhibited superior conductivity and corrosion resistance, with excellent conductivity and current uniformity reducing the internal transmission resistance. In addition, it was observed that a low current density was not favorable for grain nucleation and deposition, whereas a high current density led to structural looseness and high inner stress. The electrochemical behavior of the Al/TiB 2 -Ti 4 O 7 /PbO 2 composite anode was better than that of the Pb-Ag anode, offering lower cell voltage, higher current efficiency, and lower power consumption under identical zinc electrowinning conditions. The electric field analysis indicated that the composite anode provided a more uniform distribution of electric flux line and current density, more negative cathodic overpotential, and a higher zinc deposition rate than the Pb-Ag anode. Graphical
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高影响因子
Energetic Materials Frontiers
·
2025
·
IF 3.9
Xiao-dong Li,Wen-chao Bai,Yong-qi Da,Yun Shen,Jian-bing Xu,Ying-hua Ye,Rui-qi Shen
With the development of Micro-Electro-Mechanical Systems (MEMS) technology, the manufacture of energy conversion elements with metal bridge membranes is becoming more mature, which can be applied in the field of self-destruction of pyrotechnics and improve the immediacy of MEMS fuse safety devices. A micro-nichrome bridge (NCB) was fabricated using MEMS technology, which has a high level of integration. Nanothermite Al/CuO with an inkjet printing charging method was selected to study the ignition characteristics of Al/CuO energetic nichrome bridge (ENCB) under constant current incentive and capacitor discharge. The critical firing current within 5 min and 50 ms, the electrical explosion delay time and critical burst energy were analyzed. The experimental results demonstrate that the prepared NCB can be used as an insensitive ignition element, and its ENCB has a lower ignition current under short pulses. Both the electrical explosion delay time and critical burst energy of NCB and ENCB decrease with increasing voltage. Additionally, incorporating an energetic ink film can significantly reduce the critical burst energy. When the voltage exceeds 30 V, the incorporation of inkjet-printed Al/CuO significantly enhances the ignition performance of the energetic nichrome bridge, which makes it have great prospects for application in low-power micro initiators.
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高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Haitao Wang,Chuangyu Guo,Yiruo Ren,Sitong Shen,Zexun Cui,Haozhe Ma,Dandan Han,Hongyan Yao
Metallic Al is an attractive anode material in lithium-ion batteries (LIBs) owing to its relatively high theoretical capacity, low cost, and natural abundance. However, the practical application of Al-based anodes is impeded by issues such as significant volume change, low Coulombic efficiency, growth of dendrites, and sluggish lithium-ion transport during cycling. Herein, we design the inorganic–organic hybrid materials composed of poly(ethylene oxide) (PEO) and lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) with controllable morphologies and porosity to construct a 3D transport channel and gradient multisite adsorption for Li+ on the Al anode surface. Benefiting from the uniform porous structure and stronger adsorption effect of the PEO–LiTFSI, Li+ is first adsorbed onto PEO–LiTFSI, redistributing Li-ion flux. Second, the adsorbed Li+ and Li+ in LiTFSI undergo an alloying reaction with the Al anode. The two reaction processes redistribute Li-ion flux and ensure more homogeneous transport properties compared to the direct alloying reaction with Al. As a result, the NCM||Al–PEO–LiTFSI cell delivered stable cycling behavior over 500 cycles under a high 1 C cycling rate, achieving a capacity retention rate of 92.8%. The excellent rate performance was also achieved at 222.4 mA h/g at 5 C, indicating the superior practical application prospect of Al-based batteries. The proposed surface modification strategy furnishes a practicable pathway for the construction of highly stable Al anodes, thereby enabling their potential for practical applications.
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PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2025
·
IF 5.4
Zheyi Zhang,Qian Wei,Fen Jiao
The efficient recovery of fine-grained lepidolite remains a critical challenge in lithium resource extraction. This study proposes a flotation method leveraging mineral dissolution, focusing on the action mechanisms of Li⁺, Al³⁺, and Si⁴⁺ ions released from lepidolite and feldspar surfaces in alkaline environments. Flotation tests confirm that dissolved ions increase the flotation recovery of lepidolite from 45.24 % to 81.34 %. Inductively Coupled Plasma (ICP), Zeta potential, laser particle size measurement, and high-speed photography demonstrate that selectively released ions induce selective particle aggregation by regulating mineral surface potentials, thereby increasing the apparent particle size. Surface tension and foam property tests show that dissolved ions reduce the surface tension of the collector solution, optimize foam stability, and enhance mineralization efficiency. This study elucidates the pivotal role of dissolved ions in fine-grained lepidolite flotation and provides new insights into interface regulation strategies for the flotation of fine silicate minerals.
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高影响因子
INFRARED PHYSICS & TECHNOLOGY
·
2025
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IF 3.4
Tingzhen Chen,Quanjiang Lv,Siwei Liu,Haigang Hou,Guiwu Liu,Junlin Liu,Guanjun Qiao
The advancement of infrared-visible compatible stealth materials is pivotal for strengthening national defense security and driving the next frontier in stealth material technologies. Here, we propose a modification strategy for Al/porous SiO 2 (Al/p-SiO 2 ) composite films by incorporating Ag particles to modulate their spectral response, thereby achieving infrared-visible compatible stealth. The most outstanding Al/p-SiO 2 /Ag-20 exhibits excellent thermal stability, with emissivity of 0.27 in the mid-wave infrared (3-5 μm) and 0.19 in the long-wave infrared (8-14 μm) bands. In addition, compared with Al/p-SiO 2 , its visible reflectivity is reduced by 0.35, reaching as low as 0.38 (380-780 nm). To meet diverse application requirements, flexible and patterned Al/p-SiO 2 /Ag-20 composite film was fabricated, exhibiting excellent stealth performance, particularly suitable for wearable devices and fabrics. It is worth mentioning that the fabrication of Al/p-SiO 2 /Ag composite films only requires a simple, low-cost and scalable process, which provides a solid foundation for large-scale application of infrared-visible compatible stealth materials.
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高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2025
·Vol. 60
·期 21
·8720-8733
·
IF 3.9
Zhang Wen-hua,Yi Bing,He Wen-xin,Ma Xiu-jia,Jia Yun-bo,Li Shi-qi,Guo Cai-wen,Wang Xue-wei
Industrial catalysts for the oxygen evolution reaction (OER) of water electrolysis are key to realizing green and clean hydrogen production. In this study, multivariate transition metal hydroxide catalysts with high-entropy structure were prepared, which exhibited optimized electrocatalytic performance and stability for water splitting in alkaline media. Using copper foam as the substrate, samples are obtained through the step-by-step combination and tuning of the multi-components. The electrochemical performance test results show that the optimized FeCoCuMoMnOOH catalyst exhibits an exceptional catalytic effect for the OER with an overpotential of 227 mV at a current density of 100 mA/cm 2 , much superior to the performance of FeCoCuOOH and FeCoCuMoOOH. In the 30-h timed current method test, the performance of the FeCoCuMoMnOOH catalyst is essentially non-decaying and shows good stability. The XPS results indicate that the metal components are stably combined to exist as a mixture of metal phases in the samples, which exerts a beneficial synergistic effect and offers more active sites. Meanwhile, Mn as an electron donor can increase the electron density and optimize the electron transport structure, which is conducive to the electrochemical reaction rate. This work sheds light on presenting an effective strategy for constructing multi-element high-entropy combinations with modulated component ratios, which provides a new idea for designing efficient and stable transition metal hydroxyl oxide catalysts. Graphical abstract
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高影响因子
WATER SCIENCE AND TECHNOLOGY
·
2017
·Vol. 75
·期 12
·2800-2810
·
IF 1.197
Wu Shi-chuan,You Xia,Yang Cao,Cheng Jian-hua
MIL-68(Al), a powdered aluminum-based metal organic framework (MOF), was synthesized and used to explore its adsorption behavior toward methyl orange (MO). The adsorption isotherm, thermodynamics, kinetics, and some key operating factors as well as changes in the material's structure were investigated. The adsorption isotherm conformed to the Langmuir isotherm model and the maximum equilibrium adsorption capacity was 341.30 mg g −1 . Thermodynamic data demonstrated that the adsorption process was spontaneous, endothermic and showed positive entropy. For kinetics, the process of MO adsorption onto MIL-68(Al) was more suitably described by a pseudo-second-order model. Electrostatic and hydrogen-bonding interactions contributed to dye adsorption, with electrostatic interactions considered to be the principal binding force between adsorbent and adsorbate. Furthermore, MIL-68(Al) maintained a stable structure after adsorption. From these results, MIL-68(Al) was suggested here to be a stable MOF adsorbent for removing MO from aqueous solution.
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高影响因子
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
·
2016
·Vol. 26
·期 1
·51-60
·
IF 1.094
Hu Jiaoyu,Liu Jun,Wang Chunxia,Tang Xin
The core/shell nano-TiN-coated Al powders (TiN/Al) were prepared and added into A356 alloy by ultrasonic-assisted casting method in this work. The results show that TiN/Al has a better dispersion in A356 matrix and a stronger strengthening effect than TiN without the core/shell structure. With the addition of TiN/Al, most of the coarse primary α-Al dendrites of A356 turn into equiaxial. After T6 heat treatment, it is found that eutectic silicon in A356 with TiN/Al becomes columnar or globular in shape and smaller in size, which causes a greatly enhanced elongation of 11.7%. The results also suggest that the addition of nanoparticles can affect the precipitation behaviors and change the shapes and sizes of the precipitation.
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高影响因子
危险品化学品经营许可证（带存储）