SURFACE & COATINGS TECHNOLOGY
·
2024
·
IF 5.3
Meng Qingling,Hu Xianwei,Kang Hongguang,Lin Ming,Yu Jiangyu,Liu Aimin,Shi Zhongning,Wang Zhaowen
Aluminum coating was expected to be used for corrosion protection of 300M steel. Al coating was prepared using the galvanostatic electrodeposition from AlCl 3 /acetamide (1.3:1) system for the corrosion protection of 300M steel. This process was conducted at varying current density (2–8 mA·cm −2 ) and electrodeposition time (1 and 2 h). The chronopotentiometry revealed that the size of Al nucleus was proportional to the inverse of overpotential. Thus, the morphology of Al coating was characterized by scanning electron microscope and optical surface profiler. The results indicated a decrease in Al grain sizes and the roughness fluctuation with increasing current density. Moreover, the corrosion resistance of Al coatings was evaluated in a 3.5 wt% NaCl solution using the potentiodynamic polarization and electrochemical impedance spectroscopy test. It was illustrated that corrosion current density decreased by 57.8 % at 6 mA·cm −2 with the electrodeposition time increasing from 1 to 2 h, while the value decreased by 75.9 % with the current density raising from 5 to 6 mA·cm −2 for 2 h. Al coating electrodeposited at 6 mA cm −2 for 2 h represented the highest corrosion resistance with the charge transfer resistance of 5695 Ω·cm 2 , while the value of 300M steel was 914 Ω·cm 2 . Finally, X-ray diffraction pattern suggested that corroded coatings compositions included Al 2 O 3 , AlO(OH) and AlCl 3 ·6H 2 O. The study was considered to provide a promising method using AlCl 3 /acetamide to electrodeposit Al coatings for protecting 300M steel from corrosion.
✓ 已验证
DOI
高影响因子
INORGANIC CHEMISTRY
·
2024
·
IF 4.3
Zhe Hong,Lihua Deng,Fanglin Wang,Fangyu Zhu,Yingsen Fang,Li Song,Lei Li,Zhirong Zhu
ZSM-5 zeolites with accessible micropore architecture and tunable acid–base sites are important shape-selective catalysts. However, the presence of exposed straight channels and the external acid–base sites of conventional ZSM-5 has a negative impact on shape selectivity. Herein, we report on the direct synthesis of an intergrowth ZSM-5 zeolite mimicking the mortise–tenon joints. It can be revealed by various methods that the mortise–tenon ZSM-5 shows an inverse Al gradient from the surface to the core of the zeolite. More importantly, the sinusoidal channels predominantly opened to their external surfaces are constructed. The shape-selective capability of the ZSM-5 zeolite has been fully exploited due to the intrinsic inert external surface and unique sinusoidal channel features, thereby resulting in high styrene selectivity (>90%) and good catalytic stability (>100 h) in the toluene side-chain alkylation reaction. In addition, in situ DRIFTS confirms that this intergrowth ZSM-5 contributes to the formation of more active intermediates of HCOO* and H3CO*, which is another reason responsible for the superior performance.
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Xihui Cheng,Pengcheng Wang,Jiwei Li,Na Wang
In the field of human thermal comfort management, the development of functional textiles plays a critical role in enhancing human health and energy efficiency. Although significant progress has been made in human thermal management textiles, the construction of radiative cooling textiles with superior wearing comfort remains a considerable challenge. In this work, we present a trilayer-structured fabric composed of an electrospun polyvinylidene fluoride-hexafluoropropylene/hexagonal boron nitride (PVDF-HFP/h-BN) nanofibrous membrane (NFM) as the underlying layer, a magnetron sputtered aluminum (Al) film as the intermediate layer, and a sprayed JF-6011 coating as the upper layer. The obtained composite JF-Al 20 @P/h-BN 7.5 NFM features a well-regulated micro-nano porous structure and distinctive optical properties, achieving a solar reflectance of 94.33 % and an atmospheric window emissivity of 92.63 %. Under a solar irradiance of approximately 950 W/m 2 , the skin simulator covered with the JF-Al 20 @P/h-BN 7.5 NFM showed temperature reductions of 13.5, 13.3, and 8 °C compared to those covered with commercial cotton, nylon, and polyester fabrics, respectively. Additionally, the composite NFM possesses unidirectional moisture transport capabilities while maintaining excellent air permeability (331.75 mm/s) and moisture vapor transmission rate (7.98 kg/m 2 /D). This study provides valuable insights into the design of thermally comfortable textiles for high-temperature environments.
✓ 已验证
产品关联
DOI
高影响因子
APPLIED THERMAL ENGINEERING
·
2024
·
IF 6.1
Jiewen Xiong,Minqi Zhang,Wentao Wan,Yanbokang Shu,Shengji Li,Xuefeng Huang
This paper prepared aluminum@polytetrafluoroethylene (Al@PTFE) composite fuels with different PTFE contents and evaluated the effect of PTFE content on the thermal and combustion characteristics via multiple characterization methods. The scanning electron microscopy (SEM) and thermogravimetry–differential scanning calorimetry (TG-DSC) results showed that the PTFE was well coated on the surface, and the higher the PTFE content, the faster the oxidation reaction rate. Al@PTFE_8% fuel demonstrated more stable thermal performance and higher weight gain. Al@PTFE_15% had a weak endothermic peak at 337.2 °C, while the other two fuels did not appear. The nanosecond pulsed laser-induced plasma ignition (LIPI) test showed that compared to pure Al counterpart, Al@PTFE fuels could effectively shorten the ignition delay and promote the energy release, for Al@PTFE_8% with a reduction of 41.9% in ignition delay and an increase by 17.1 % in combustion temperature. The self-sustaining burn time decreased as the PTFE content increased. The gas-phase combustion of Al@PTFE fuels were more pronounced, and their AlO spectral signal intensity were stronger. The Al@PTFE combustion residues showed lots of cracks and holes, and the mass fraction of O was increased from 22.96 % (Al) to 30.53 % (Al@PTFE_8%). The proposed combustion mechanism reveals that PTFE destroyed the alumina film that hindered combustion, significantly promoting the combustion of Al particles. This study provides guidance for laser-induced plasma ignition of this material under ultrahigh heating rates.
✓ 已验证
DOI
高影响因子
TALANTA
·
2025
·
IF 6.1
Qiaoli Yang,Xiao Yang,Ke Guo,Guangrui Pan,Qiuzheng Du,Liang Ming,Wanhai Wang
Pseudomonas aeruginosa (PA) infection poses a significant threat to human health and the economy, with the issue of drug resistance becoming increasingly severe. How to quickly, accurately, and inexpensively detect PA and differentiate live bacteria from dead ones is crucial for clinical follow-up treatment. To this end, we have developed a biosensor based on fluorescent metal-organic frameworks (MOFs) (Eu 3+ @MIL-53(Al)) and specific-phages for PA detection, where the Eu 3+ @MIL-53(Al) prepared by one-pot method exhibits excellent fluorescence properties. By covalently binding specific phages isolated from hospital wastewater to the EuMOF surface, we constructed a fluorescent biosensor capable of detecting PA within 15 min, with a sensitivity threshold of 2 CFU/mL. Notably, this biosensor demonstrates high specificity, accurately quantifying live PA in complex bacterial mixtures and distinguishing live from dead bacteria. Its practical application has been validated in clinical blood and stool samples. As a novel platform for clinical microbial monitoring, the Eu 3+ @MIL-53(Al)-phage biosensor not only holds substantial economic potential but also carries significant public health implications.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Haolin Hu,Yuelin Wang,Yue Xu,Liangxiao Jin,Samuel Jeong,Xinfu Xie,Chengqian Xiong,Bojun Zhou,Wenping Sun,Jialiang Zhang,Xi Lin,Kailong Hu
Upcycling retired lithium-ion batteries (LIBs) into value-added electrocatalysts represents a promising strategy for tuning the trash into treasure. Herein, an effective approach is reported to convert the LIB anode residues into electrocatalysts that enhance the oxygen reduction reaction (ORR). The residues are utilized for synthesizing reduced graphene oxides (rGO) with Mn nanoparticles anchored by N and S dopants (Mn/NS-rGO). A Pt/C-comparable ORR performance is achieved in alkaline media, with the onset and half-wave potentials of 1.01 and 0.87 V, as well as the excellent durability. Density functional theory (DFT) calculations reveal that Mn sites, coordinating with N and S dopants, simultaneously optimize the intermediate adsorption and charge distribution, which in turn facilitates ORR. The solid-state Al-air batteries are assembled by using Mn/NS-rGO as the cathode catalyst, showing the power density of 103.8 mW cm − 2 , which successfully charge a cell phone and power LED lights under flexible working conditions.
✓ 已验证
DOI
高影响因子
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
·
2024
·
IF 2.9
Lei Guo,Lei Zhu,Yue Huang,Yan Tan,Alessandra Gilda Ritacca,Xingwen Zheng,Senlin Leng,Baoguo Wang
Alkaline Al-air batteries (AABs) are gaining increasing attention for large-scale energy storage systems due to their attractive intrinsic safety and cost-effectiveness. Nonetheless, future development of AABs is substantially hampered by water-induced self-corrosion processes on the Al anode. In this work, we introduce an amino acid derivative, namely Nα-Boc-N1-formyl-L-tryptophan (NBLT), into 4 M NaOH electrolyte to construct a unique layer that can effectively regulate the surface microstructure of Al anode. The findings of the experiments show that NBLT can be used as a reliable corrosion inhibitor. The effectiveness of the inhibitor increases with NBLT concentration, reaching a maximum of 73.9% at 1.5 mM. In comparison to the pristine condition, there is a significant increase in anode utilization from 31.8% to 82.9%, capacity density from 947.9 to 2469.1 mAh g−1, and energy density from 1261.6 to 3384.6 Wh kg−1. Theoretical calculations indicate that the carboxyl moieties present in the NBLT molecule establish coordination bonds with the Al atoms, thereby exerting a dominant role on the formation of the self-assembled barrier. The present investigation paves an effective strategy to inhibit reactions between anodes and electrolytes for advanced AABs.
✓ 已验证
DOI
PubMed
高影响因子
Energy Storage Materials
·
2020
·
IF 16.28
Pengfei Sun,Juntong Chen,Yuanlin Huang,Jing-Hua Tian,Sha Li,Gulian Wang,Qiaobao Zhang,Zhaowu Tian,Li Zhang
Al-air batteries (AABs) are a great option for outdoor wearable electronics due to their high theoretical energy density (8100 Wh kg −1 ), huge industrial reserves and easy recyclability of Al, but suffer from severe self-corrosion, low Al utilization and harmful liquid leakage. Herein, we first devise a high-strength agarose gel electrolyte (AGE) that combines high toughness and super solution carrying capacity, for the construction of wearable AABs with high energy density, safety, easy assembly and greatly suppressed self-corrosion. The rigid AGEs convert the traditional Al/liquid interface into an Al/quasi-solid interface, thus leading to the formation of a Sn-dominated passivation layer that drastically inhibits the self-corrosion of Al. The in-depth failure mechanism study of AGE-based AAB coin cells demonstrates that three most critical factors affecting the discharge behavior of Al anodes are in order: H 2 accumulation, working current density and OH − replenishment. On this basis, the optimized large-area soft-package AAB (10 cm 2 ) shows a 20.1-hour discharge duration and a specific capacity of 2148.5 mAh g −1 (2766.9 Wh kg −1 ), outperforming those of the state-of-the-art AABs based on other gel electrolytes. More impressively, a practically useful wearable AAB pack is further prepared to drive the LED array and a smart phone.
✓ 已验证
DOI
高影响因子
TALANTA
·
2025
·
IF 6.1
Luyang Zhao,Yang Song,Guoyang Xie,Hengyi Xu
A colorimetric assay based on the Fe/Al bimetallic organic framework NH 2 -MIL-53(Fe, Al) was developed for the sensitive detection of Escherichia coli O157:H7 ( E. coli O157:H7), a critical pathogen threatening food safety. The framework’s high specific surface area facilitated efficient antibody immobilization, whereas the incorporation of Al 3+ enhanced electron transfer between Fe 2+ /Fe 3+ , thereby significantly boosting peroxidase activity. The optimized NH 2 -MIL-53(Fe, Al) exhibited 1.4-fold and 4.9-fold higher relative absorbance than NH 2 -MIL-53(Fe) and NH 2 -MIL-53(Al), respectively. And it demonstrated 40-fold and 2-fold greater affinity for TMB and H 2 O 2 , respectively, compared to the natural enzyme. By integrating a dual-recognition system based on antibody and aptamer, the method enabled rapid detection with a limit of detection of 10 1 CFU/mL in colorimetric mode. Its successful application in complex matrices, including lettuce, juice, pool water, and chocolate milk, had yielded satisfactory recovery and precision, confirming its promising potential for food safety monitoring.
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF POWER SOURCES
·
2025
·
IF 7.9
Jiao Ma,Qin Zhu,Zhihui Qian,Wei Bai,Rui Liu,Long Shi,Yongsheng Yang,Yujiao Guo,Mingwu Xiang,Junming Guo
The drawbacks of Jahn-Teller (J-T) effect, capacity decay at high temperature and the dissolution of Mn generated at elevated current density limit the large-scale application of LiMn 2 O 4 batteries . Herein, a Si 4+ /Al 3+ co-doping strategy of LiMn 2 O 4 is carefully developed to stabilize the [MnO 6 ] framework, thereby inhibiting the J-T distortion and ultimately alleviating Mn dissolution. The incorporation of Si 4+ and Al 3+ in LiMn 2 O 4 promotes the formation of a single-crystal truncated octahedral structure, with preferential grain growth along the {111}, {100} and {110} crystal plane, which decreases Mn dissolution and enhances the Li + transfer pathways. Furthermore, the integration of Si 4+ /Al 3+ co-doping producing smaller particles can shorten the migration paths of electrons and ions. Consequently, the optimized LiSi 0.05 Al 0.09 Mn 1.86 O 4 displays a decent initial discharge specific capacity of 103.2 mAh·g −1 and an excellent capacity storage percentage of 79.7 % after 1000 cycles at 10 C. Meanwhile, the optimal sample also exhibits respectable first discharge capacities of 91.9 mAh·g −1 and 61.8 mAh·g −1 at ultra-high rates of 20 C and 40 C, along with superior capacity storage ratios of 70.9 % and 70.7 % after 1000 cycles. More importantly, the optimized sample shows remarkable first discharge specific capacity of 107.1 mAh·g −1 at 55 °C and 10 C and exciting capacity storage rate of 61.9 % after 500 cycles. This study serves as a guide for advancing high-performance, high-stability LiMn 2 O 4 cathode materials for use in lithium-ion batteries.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
·
2020
·Vol. 29
·期 11
·7239-7249
·
IF 1.652
Sang Changcheng,Cai Xiaoping,Zhu Lu,Ren Xuanru,Niu Gao,Wang Xiaohong,Feng Peizhong
To achieve the low energy consumption and high strength joining between Ti and Ni, a novel joining method (rapid thermal explosion, TE) was developed for joining dissimilar metals using Ti-Al mixture powders as flux. The TE reaction temperature of Ti-Al flux was measured, and the microstructure and mechanical properties of Ti/Ni joint were investigated. The results reveal that the combustion temperature of the Ti-Al powder interlayer is 1103 °C, which is higher than the joining temperature, and an obvious self-exothermic phenomenon lasts 20 s. The intermetallic compound diffusion layers formed at both interfaces mainly owing to the diffusion of Al and the growth activation energy of diffusion layers near both interfaces are 79.68 kJ/mol and 38.26 kJ/mol, respectively. Based on the sheer strength and diffusion layer, the formation mechanism of Ti/Ni joints is metallurgical bonding through atomic diffusion and formation of the diffusion layer.
✓ 已验证
DOI
高影响因子
Case Studies in Thermal Engineering
·
2026
·
IF 6.6
Kang Lei,Wen-hao Wang,Xian-die Zhang,Ji-yu Lu,Xing-liang Wu,Sen Xu,Xiang Zhou
This study successfully fabricated core-shell structured Al@ADN/PVDF energetic composites through electrostatic spraying, with nano-aluminum (n-Al) cores encapsulated by an ammonium dinitramide (ADN)/polyvinylidene fluoride (PVDF) composite shell. The morphology and structure were systematically characterized using scanning electron microscopy (SEM), scanning transmission electron microscopy (STEM), Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD). Thermal decomposition behavior was investigated through thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC), with corresponding kinetic parameters calculated. Combustion processes were monitored via high-speed imaging, while ignition and combustion performance were evaluated under both ambient and confined environments. The results show that n-Al particles are uniformly encapsulated by a continuous ADN/PVDF composite shell. Compared to physically mixed mixture, the Al@ADN/PVDF composites exhibit a 6.7% reduction in the PVDF decomposition stage mass loss and demonstrate a 24% reduction in decomposition activation energy. Furthermore, Al@ADN/PVDF composites demonstrate superior combustion characteristics, including 102% higher maximum pressure, 128% faster pressurization rate, 19% shorter ignition delay time and 17% shorter burning time. The core-shell Al@ADN/PVDF architecture provides an innovative approach for optimizing the energetic potential of aluminum in both solid propellant and pyrotechnic applications.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）