JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2025
·Vol. 36
·期 5
·1-12
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IF 2.8
Chen Zheng,Hou Junxin,Jin Xiangwei,Zheng Lingxia,Liu Fenghua,Li Zhixiang
The utilization of the high-entropy effect and the cocktail effect in high-entropy oxides has significantly expanded the horizon for material design and performance enhancement. Consequently, the fabrication of high-entropy oxides has emerged as a focal point of recent research. High-entropy oxides that serve as cathode materials for battery electrodes must exhibit high electrical conductivity. In this study, a high-entropy oxide (La 0.2 Ba 0.2 Cu 0.2 Sn 0.2 Ni 0.2 ) 3 O 4 was synthesized using the high-temperature solid-state reaction method. A systematic investigation was conducted to analyze the impact of varying sintering temperatures on the phase structure and electrical properties of the material. The findings indicate that the high-entropy oxide under study possesses commendable electrical conductivity. The electrical conductivity of the material was observed to increase initially and then decrease with the elevation of sintering temperature. Optimal electrical conductivity was achieved at a sintering temperature of 1280 °C. The temperature-dependent electrical conductivity of the sample was found to increase initially and then decrease, with a nominal conductivity of 20.062 S·cm −1 at 25 °C, and a stepwise increase to 30.06 S·cm −1 at 250 °C. This material holds promising potential for applications in energy, electronics, and catalysis sectors.
研究领域:
材料科学
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能源科学
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电子工程
✓ 已验证
产品关联
DOI
高影响因子
DYES AND PIGMENTS
·
2020
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IF 4.613
Xiufen Liao,Congjin Chen,Ruxia Zhou,Quanlong Huang,Qinglong Liang,Zuqiang Huang,Yanjuan Zhang,Huayu Hu,Yanglin Liang
In this study, N-doped carbon dots (N-CDs) synthesized from the main components of plants, including cellulose (N-cCDs), lignin (N-lCDs), and xylose (N-xCDs), were compared. TEM, XRD , FT-IR, and XPS were carried out to characterize their morphology and chemical composition. Results show that the three obtained N-CDs contained N-doped sp 2 and sp 3 hybrid carbon core, which was surrounded by oxygen- and nitrogen-containing functional groups. The three N-CDs exhibited a novel double excitation-one emission phenomenon, and their fluorescence were significantly enhanced by N-doping. Moreover, this study indicated that high lignin-containing biomass is not appropriate for producing CDs by hydrothermal method . Cellulose is conducive to produce CDs, while it needs a relatively high temperature and a long time. Low-molecular carbohydrate-rich biomass and nitrogen-containing biomass is the better carbon source to produce the CDs. Also, this study revealed that N-cCDs and N-xCDs are excellent candidates for fluorescent ink, fabrics identifying, temperature sensing, and Hg 2+ sensing. Due to its poor fluorescence property, N-lCDs is not suitable for fluorescent ink and fabrics identification.
研究领域:
材料科学
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环境科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
SYNTHETIC METALS
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2020
·
IF 3.286
Yao Lu,Shan Wang,Chuanxi Xiong,Guo-Hua Hu
This work presents a method for the synthesis of a liquid-like polythiophene (L-Pth) by chemical oxidative polymerization of thiophene in dichloromethane. FeCl 3 was used as an initiator and nonylphenol polyoxyethylene ether (NPES) as a dopant . The structures and physicochemical properties of the L-Pth were characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), thermogravimetric analysis (TGA), fluorescence spectroscopy and ultraviolet-visible photometer (UV–vis). Unlike conventional polythiophene, L-Pth is composed of NPES and polythiophene, and part of NPES is doped on the thiophene backbone. It exhibits a liquid-like behavior at room temperature. It is typical of a semiconductor with a relatively high electric conductivity of 1.2 S m −1 . Moreover, it turns high-energy blue light (in the ranges of 400–480 nm) into relative low-energy green light (peak at 515 nm), which makes it a potential filler for preparing a blue light protection film for eyes protection. The combination of the liquid behavior, excellent solubility and good electric conductivity also makes it a promising precursor for applications such as lightweight battery, super capacitor and anti-corrosion of metals.
研究领域:
材料科学
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化学工程
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2021
·
IF 13.273
Zhe Zhao,Bolong Liang,Menglu Wang,Qi Yang,Ming Su,Shu-xuan Liang
Flumequine (FLU) is a kind of fluoroquinolone antibiotics and has become a concerned pollutant as following widespread use of antibiotics and abuse to some extends. In this study, a microporous carbon derived from hydroxyl functionalized organic network (MON-OH-C) was prepared via the carbonization of a new member of MON-OH under nitrogen atmosphere at 500 °C. The adsorption kinetics, isotherm, thermodynamics and influence factors of pH, ionic strength, and humic acid on MON-OH-C for FLU adsorption were investigated in detail. The regeneration, reusability, application potentials and adsorption mechanism were further discussed. The adsorption of FLU on MON-OH-C accorded with the pseudo-second-order kinetic and Sips adsorption models. Rely on the interaction of π - π and hydrogen bonding between FLU and MON-OH-C, the maximum adsorption capacity for FLU under the static and solid phase extraction (SPE) dynamic conditions were 279.8 and 180.1 mg·g −1 , which were higher than many other reported adsorbents. MON-OH-C can be anticipated as a powerful adsorbent owing to its large surface area, physical and chemical stability, good water dispersibility, high adsorption and regeneration capability. It has great application potentials in adsorption removal, SPE sample pretreatment, and fix bed column. This work promoted the development of new synthesis strategy and the extensive application of pollutant removals by MON-OH-C in environmental science.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
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2022
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IF 10.383
Jie Chen,Xu Huang,Zelian Xu,Yuwu Chi
In recent years, lead halide perovskite nanocrystals (PNCs) have presented potential scalable applications in all fields due to their outstanding properties. However, most commonly used PNCs capped with oleic acid (OA) and oleylamine (OAm) suffer from bad stability in polar solutions and thus require various surface protections with organic or inorganic materials. Encapsulation with highly hydrophobic polystyrene (PS) is one of the most efficient ways to protect PNCs; however, the presently used swelling–shrinking strategy faces several challenges, such as weak interaction between PS chains and the surface ligands in nonpolar media causing a low encapsulation efficiency, and serious aggregation of PS particles during the shrinkage process leading to very different particle sizes. Herein, alcohol-stable polyacrylic acid-capped CsPbBr3 PNCs (i.e., PAA-PNCs) are first synthesized and then in situ encapsulated with PS shells by polymerizing styrene monomer on the PNC surfaces in a polar organic solvent (e.g., ethanol). The in situ PS-encapsulated PAA-PNCs (i.e., PAA-PNCs@iPS) exhibit outstanding monodispersity, remarkable water, heat, and UV stability, high fluorescence activity, and color purity. The unique synthesis strategy and good performances of PAA-PNCs@iPS will boost the applications of PNCs in LEDs, biological imaging, and chemosensing.
研究领域:
材料科学
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化学
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光学工程
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产品关联
DOI
PubMed
高影响因子
Environmental Science-Water Research & Technology
·
2022
·Vol. 8
·期 11
·2602-2613
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IF 5.819
Yanling Chen,Yajie Chen,Xue Bai
Metal–organic frameworks (MOFs) have been demonstrated to be promising catalysts in advanced oxidation processes (AOPs), while the poor recyclability due to the powder form limits their practical application. Herein, MIL-88A was successfully embedded in a chitosan matrix for the first time to form 3D micro–meso-structured beads (MIL-88A-CS) by an in situ growth method and the beads were used as heterogeneous peroxymonosulfate (PMS) activators to degrade tetracycline hydrochloride (TC-HCl). 97.1% TC-HCl was removed by the MIL-88A-CS/PMS system in 60 min. The main parameters affecting the TC-HCl degradation efficiency were studied. The sulfate radical (SO4˙−) and hydroxyl radical (˙OH) played dominant roles in the TC-HCl removal. The possible TC-HCl degradation mechanism of the MIL-88A-CS/PMS system was proposed. The excellent catalytic activity of MIL-88A-CS was attributed to the abundant Fe active sites, –COOH groups, and large specific surface area, as well as microporous and mesoporous structures. Reasonable degradation pathways were analyzed by identifying TC-HCl intermediates. Significantly, it is the first time to comprehensively assess the practical application potential of the MIL-88A-CS beads from the perspectives of ecotoxicity, reusability, stability, TC-HCl removal efficiency in actual water environments, and economic applicability. This work provides a promising PMS activator for the removal of emerging contaminants and promotes the practical application of MOFs in wastewater treatment.
研究领域:
环境科学
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材料科学
✓ 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）