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.
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高影响因子
Silicon
·
2025
·
IF 3.3
Yang Yonghui,Fan Chao,Yang Pengchen,Liu Zhanwei,Yan Hengwei
This study investigated the effect of aluminum oxide (Al 2 O 3 ) additives on the properties of NaF-AlF 3 -SiO 2 melts. The liquid-phase line temperature was determined through thermal analysis, while the solubility and volatilization loss of silicon dioxide (SiO 2 ) were evaluated using the rotating quartz disk method and volatilization experiments. The dissolution mechanism of Al 2 O 3 in the melt was explored through thermodynamic analysis and experimental validation. The results indicated that Al 2 O 3 addition significantly decreased liquid-phase line temperature, enhanced SiO 2 solubility, and reduced volatilization losses. These findings provide a theoretical basis for optimizing the electrolysis process of Al–Si alloys, which contribute to improved melt performance, enhanced energy efficiency, and reduced volatilization losses, thereby promoting increased efficiency in industrial applications.
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高影响因子
Surface Topography-Metrology and Properties
·
2021
·Vol. 9
·期 3
·035021
·
IF 2.038
Xiaoqiang Fan,Hanzhi Zhu,Yu Huang,Shijie Song,Meng Cai
The poor dispersity of graphene in epoxy (EP) coating is harmful to exerting its barrier effect, and the protective efficiency of onefold coating has some difficulty to meet the ever-increasing demands of corrosion protection on Al alloy. Herein, a multilayer protection system (FG-SH-EP) coating was composed of a top superhydrophobic (SH) coating and a bottom amino-functionalized graphene/epoxy (FG-EP) coating. The as-designed multilayer protection system shows good water-repellent (the water contact angle is over 150°). The lowest-frequency impedance of FG-SH-EP is increased by an order of magnitude, because SH surface strengthens the water resistance for early safeguard and FG builds tortuous diffusion path for corrosion media towards physical barrier effect. Additionally, the anti-wear ability of FG-SH-EP is improved by about four times compared to single EP coating. The excellent anti-corrosion/wear behaviors of FG-SH-EP are attributed to the synergistic protection effect of SH-EP and FG-EP. This work is helpful to promote the application of multilayer strategy in alloy protection field.
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高影响因子
Polymers
·
2018
·Vol. 10
·期 2
·127
·
IF 2.935
Qianni Zhang,Ruizhi Peng,Chunfu Zhang,Dazheng Chen,Zhenhua Lin,Jingjing Chang,Jincheng Zhang,Yue Hao
The aqueous-based Zn-ammine complex solutions represent one of the most promising routes to obtain the ZnO electron transport layer (ETL) at a low temperature in inverted organic solar cells (OSCs). However, to dope the ZnO film processed from the Zn-ammine complex solutions is difficult since the introduction of metal ions into the Zn-ammine complex is a nontrivial process as ammonium hydroxide tends to precipitate metal salts due to acid-base neutralization reactions. In this paper, we investigate the inverted OSCs with Al-doped-ZnO ETL made by immersion of metallic Al into the Zn-ammine precursor solution. The effects of ZnO layer with different immersion time of Al on film properties and solar cell performance have been studied. The results show that, with the Al-doped-ZnO ETL, an improvement of the device performance could be obtained compared with the device with the un-doped ZnO ETL. The improved device performance is attributed to the enhancement of charge carrier mobility leading to a decreased charge carrier recombination and improved charge collection efficiency. The fabricated thin film transistors with the same ZnO or AZO films confirm the improved electrical characteristics of the Al doped ZnO film.Keywords:organic solar cell;inverted structure;electron transport layer;Al-doped-ZnO
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高影响因子
Journal of Renewable and Sustainable Energy
·
2016
·Vol. 8
·期 5
·
IF 0.961
Lu Meizhen,Liu Xuejun,Li Yongqiang,Nie Yong,Lu Xianghong,Deng Dongshun,Xie Qinglong,Ji Jianbing
Bi-functional catalysts consisting of platinum on aluminosilicate MCM-41 materials with Si/Al ratios between 10 and 30 were prepared via direct mixed-gel synthesis. The catalysts were tested in the hydrocracking of bio-alkanes, produced from biodiesel hydrodeoxygenation and composed of n-hexadecane and n-octadecane, for the production of bio-jet fuel. The effects of temperature, pressure, weight hourly space velocity (WHSV), and H 2 /n-paraffin weight ratio on bio-alkanes conversion and product distribution were examined. The conversion was found to be dependent on the acid strength of the catalyst supports which were proportional to the Al content. However, the catalyst selectivity decreased with the increasing Al content. The optimal Si/Al ratio, temperature, pressure, WHSV, and H 2 /n-paraffin weight ratio were determined to be 20, 330 °C, 2 MPa, 1 h −1 , and 0.20, respectively. Under these conditions, the bio-alkanes conversion and kerosene/gasoline ratio in the product reached 65.62% and 1.96, respectively.
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高影响因子
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
·
2016
·Vol. 16
·期 12
·12635-12639
·
IF 1.338
Du Jingjing,Xie Shaowen,Li Na,Xu Jianxiong,Xu Lijian
Hierarchical nanoporous Al–SiO2 particles were prepared in this study by dissolving template method. The hierarchical nanoporous Al–SiO2 particles with hollow structure were analyzed by transmission electron microscope (TEM), energy dispersive spectrometer
(EDS), scanning electron microscope (SEM), nitrogen adsorption stripping curves and Barrett-Joyner-Halenda (BJH) pore size distribution curves. Hierarchical nanoporous Al–SiO2/Ni–Mo composite electrodes were prepared by composite deposition of hierarchical nanoporous
Al–SiO2 particles onto electroplating bath of Ni–Mo. Results showed that the specific surface area for the hierarchical nanoporous Al–SiO2 sample was 396 m2/g, with pore volume being 1.37 cm3/g and mesoporous pore size being 3.3
nm. The hydrogen evolution electrocatalytic activities for the composite electrodes reached the optimal value when the concentration of the hierarchical nanoporous Al–SiO2 in the electroplating bath was 2 g/L, indicating that their “foam” structure did not only
enhance the electrode surface area but also effectively improved the electrocatalytic properties of aluminum and showed that the electrocatalytic hydrogen evolution by the hierarchical nanoporous Al–SiO2/Ni–Mo composite electrodes had more advantages than that of the
Ni–Mo electrodes alone.
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高影响因子
CORROSION
·
2023
·Vol. 79
·期 5
·486-496
·
IF 1.6
Zhao Yinghai,Li Wei,Wang Zhenwen,Li Ning,Xu Yanling,Li Deyu
In recent years, in the field of tinplate production, it has become a trend to use lower tin coating mass to lower production costs. However, the preparation of low Sn-coated steel must face two significant problems: toxic chromate post-treatment and low corrosion resistance. In this work, we developed an Mn-Al-P chemical conversion coating using a process sequence-adjusted tinplate of 0.5 g/m 2 tin coating mass as an alternative to the chromate treatment. Meanwhile, by adjusting the subsequence of the reflowing process and the post-treatment process, the wash water and electricity consumption were effectively reduced. The influence of reflowing time on the microstructural appearance, phase composition, surface element distribution, and corrosion resistance of this new brand tinplate was studied. Moreover, the composition was determined by x-ray photoelectron spectroscopy, and further discuss the formation mechanism of this coating. The results show that this mutielement coating could effectively fill tin-free zones on the surface of the tinplate and improve the corrosion resistance when the reflowing time is properly set up to 3.5 s after the process adjustment. However, continually extending the reflowing time would cause the phosphate coating to fall off, leading to the corrosion resistance deterioration. The coating was mainly made up of a series of amorphous phosphate compounds and metal oxides, which was suitable for a tinplate with low tin coating mass.
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CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Huiqiao Liu,Yanan He,Kangzhe Cao,Yong Jiang,Xiaogang Liu,Qiang-Shan Jing,Lifang Jiao
Al has been considered as a promising Li-ion batteries anode. However, the volume expansion always makes the electrode in an unstable structure. Meanwhile, the natural Al 2 O 3 passivation layer may lead to a large voltage dip, which could interrupt the lithiation process and result in a limited capacity. Herein, we report a neat avenue to activate the commercial Al pellet electrode by replacing the Al 2 O 3 layer with Sn at room temperature. Not any acid or tedious process is needed. Benefiting from the elimination of Al 2 O 3 and high electrochemical-activity of Sn, the obtained Al@Sn pellet electrode delivers a reversible capacity of 959.5 mAh g −1 at 0.1 A g −1 , which is larger than that (395.7 mAh g −1 ) of the commercial Al pellet electrode and approaches the calculated theoretical capacity. Notably, the voltage dip is muchly lowered to 0.03 V from 0.1 V. When graphene oxide (GO) was further attached for relieving the volume expansion, the as-prepared Al@Sn@GO pellet electrode presents astonishing Li-ion storage properties both in half and full batteries. This work demonstrates that the cooperation of the Al 2 O 3 elimination and matrix addition is successful in promoting the Li-ion storage properties of Al anode, presenting an attractive vision for the development of practical Al-based anodes.
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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.
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高影响因子
WATER SCIENCE AND TECHNOLOGY
·
2025
·Vol. 92
·期 10
·1441-1456
·
IF 2.6
Wang Wenhao,Ge Aijun,Xu Yuan,Yang Xuesong,Feng Shiying,Su Ying,Wang Weida,Xing Liqun,Hao Xiujuan
View large Download slide View large Download slide Close modal In the study, a novel Fe/Al bimetal with a high specific surface area and electron transfer capacity was synthesized through ball milling Fe and Al powder. Importantly, this synthesis process did not consume Al powder and did not generate by-products that required treatment. Compared with Fe or Al powder and the ball-milled Fe or Al powder, Fe/Al could rapidly remove Cr(VI) through adsorption–reduction under near-neutral conditions. Nevertheless, the removal efficiency of Cr(VI) by Fe/Al was influenced by the initial pH of the solution and dissolved oxygen (DO). Kinetic studies and adsorption isotherm analysis demonstrated that the pseudo-second-order adsorption kinetic model and the Freundlich model could better describe the Cr(VI) removal data, and the maximum removal amount of Cr(VI) was 6.25 mg/g. Furthermore, based on the characterization analysis of XPS, the adsorbed Cr(VI) was reduced to Cr(III). SEM-EDS analysis revealed that Cr mainly overlapped with the Fe elemental distribution on the surface of Fe/Al particles, suggesting that Fe was the main reaction site. Consequently, the results indicated that highly active Fe/Al could be prepared by solid–solid blending for pollutant removal, which provided technological concepts for the waste utilization of scrap iron and aluminum. Increasing the specific surface area of Fe/Al by ball milling of Fe and Al powder was the key to enhancing Cr(VI) removal. Cr(VI) was mainly removed by adsorption–reduction under near-neutral pH. The removal sites of Cr(VI) by Fe/Al mainly occur on the surface of Fe. The maximum adsorption capacities of Cr(VI) by Fe/Al were 6.25 mg/g.
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高影响因子
MOLECULES
·
2010
·Vol. 15
·期 8
·5139-5152
·
IF 1.738
Lu Lin,Ying Liu
A series of Ni-based catalysts were prepared using hydrogen reduction of Ni/Al hydrotalcite-like compounds (Ni/Al HTlcs) synthesized by coprecipitation. The physico-chemical properties of Ni/Al hydrotalcite-like compounds and the corresponding Ni-based catalysts were characterized using inductively coupled plasma (ICP), BET surface areas, X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy and scanning electron microscopy (SEM) techniques. The results indicated that Ni/Al HTlcs with layered structures could be successfully prepared by the coprecipitation method, and the characteristic HTlcs reflections were also observed in the XRD analysis. The NiO and Ni0phases were identified in all Ni-based catalysts, which displayed randomly interconnected pores and no layer structures. In addition, the studies also found the Ni/Al HTlcs and Ni-based catalysts had high specific surface areas, low pore volumes and low pore diameters. The catalytic hydrogenation of ethyl acetate to ethanol with Ni-based catalysts was also investigated. Among the studied catalysts, RE1NASH-110-3 showed the highest selectivity and yield of ethyl acetate to ethanol, which were 68.2% and 61.7%, respectively. At the same time, a major by-product, butyl acetate, was formed due to an ester-exchange reaction. A proposed hydrogenation pathway for ethyl acetate over Ni-based catalysts was suggested.Keywords:hydrogenation;ethyl acetate;ethanol;Ni/Al hydrotalcite-like compounds
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高影响因子
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
·
2021
·Vol. 22
·期 16
·8668
·
IF 5.924
Jie Li,Shiyi Wang,Huayin Li,Yuan Tan,Yunjie Ding
The synthesis of ester compounds is one of the most important chemical processes. In this work, Zn-Mg-Al mixed oxides with different Zn2+/Mg2+molar ratios were prepared via co-precipitation method and supported gold nanoclusters to study the direct oxidative esterification of aldehyde and alcohol in the presence of molecular oxygen. Various characterization techniques such as N2-physical adsorption, X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS) and CO2temperature programmed desorption (TPD) were utilized to analyze the structural and electronic properties. Based on the results, the presence of small amounts of Zn2+ions (~5 wt.%) provoked a remarkable modification of the binary Mg-Al system, which enhanced the interaction between gold with the support and reduced the particle size of gold. For oxidative esterification reaction, the Au25/Zn0.05MgAl-400 catalyst showed the best performance, with the highest turnover frequency (TOF) of 1933 h−1. The active center was believed to be located at the interface between metallic gold with the support, where basic sites contribute a lot to transformation of the substrate.Keywords:gold catalyst;cluster;hydrotalcite;oxidative esterification;methyl isobutyrate
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高影响因子
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