JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
·
2021
·
IF 2.262
Kangnan Fan,Zhuji Jin,Xianglong Zhu,Qiulin Wang,Jing Sun
Iron materials are widely applied in electrical-tower. However, the freezing rain adhering to the electric-tower in winter can raise a huge potential safety hazard to the power facilities. Therefore, how to make ironworks possess anti-icing property has become a difficult problem. In order to resolve the aforementioned issue, a facile, low-cost and environment-friendly electrochemical machining method was developed to fabricate superhydrophobic surface on iron materials to endow anti-icing capacity in the freezing rain. After fluoroalkylsilane (FAS) modification, superhydrophobic surface could be obtained. The morphology of the surface film was examined using scanning electron microscopy (SEM) equipped with an energy-dispersive spectroscopy (EDS) and laser confocal microscope. The chemical composition was investigated by X-ray photoelectron spectroscopy (XPS). The influence of the applied processing time on wettability was also studied. The results showed that a rough surface, which consisted of many step-like structures, was formed on the surface of iron by the proposed electrochemical method. After FAS modification, the surface showed good superhydrophobicity with the water contact angle of 162° and water sliding angle of 3.33°. The mechanism of the generated rough structures was also discussed. Moreover, the static and dynamic anti-icing tests were conducted. The results showed that the superhydrophobic surface can not only significantly delay the freezing time, but also prevent the cold water from freezing on the iron surface, which could be a good solution to the freezing rain issue.
研究领域:
材料科学
·
表面工程
✓ 已验证
DOI
高影响因子
FERROELECTRICS
·
2016
·
IF 0.491
Sun Hai-Qin,Zhang Qi-Wei,Li Wen-Xin
The photoluminescence of Tb3+-doped (Bi0.5Na0.5)TiO3 (BNT) ferroelectric materials fabricated via the conventional solid-sate reaction method were studied. Under blue light excitation (487 nm), a bright green emission centered at 547 nm is observed at room temperature, originating from the 5D4→7F5 transition of Tb3+ ions. The emission intensity reached its maximum as the doping concentration is 0.02 mol and sintering temperature is 1080°C, respectively. The CIE chromaticity coordinate for x = 0.02 is (0.3222, 0.6711), located in the green light region. These results show that Tb3+-doped BNT materials may have potential applications in white light-emitting diodes and novel multifunctional devices.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2020
·
IF 3.99
Kangnan Fan,Zhuji Jin,Yan Bao,Qiulin Wang,Lin Niu,Jing Sun,Jinlong Song
Iron materials have the extremely widespread applications and they are common in all kinds of frame structures, such as iron tower. However, it is well known that ironwork is easy to rust. Besides, in cold environment the freezing rain adhered to the iron facility can also bring huge potential security problems. Herein, we present a modified electrochemical machining (ECM) method by applying a mixed aqueous solution of Na 2 MoO 4 and NaCl to fabricate superhydrophobic film on iron materials followed by fluoroalkylsilane (FAS) modification. The proposed ECM method can not only generate rough microstructures very rapidly even at low electrical parameters, but also reduce the pollution of the electrolyte by recycling the corrosion products. The sandpaper abrasion and knife scratch tests were utilized to demonstrate the mechanical strength of the obtained superhydrophobic surfaces. Good self-cleaning properties were also showed by using several kinds of contaminants and corrosive solutions. Furthermore, we demonstrated the good anti-fogging property by using atomizer and the anti-icing property by static and dynamic anti-icing tests in a cold environment to show the practical applications of the prepared film. We believe that the modified ECM method has broad application prospects.
研究领域:
材料科学
·
表面工程学
✓ 已验证
产品关联
DOI
高影响因子
AGRICULTURAL WATER MANAGEMENT
·
2023
·
IF 6.7
Lingyun Chen,Ziyi Hu,Wenhui Chen,Ziwei Xu,Can Hao,Prakash Lakshmanan,Dunyi Liu,Xinping Chen
The high loss of foliar-applied fertilizers in the wet season and other extreme weather conditions reduces fertilizer use efficiency remarkably low. Emerging nano-iron materials, owing to their highly desirable properties such as exceptionally small size, particle surface and interface attributes, strong adhesion and high iron ratio, could overcome the limitations of traditional fertilizers. However, their anti-leaching property, leaching resistance mechanism, iron nutrition enrichment capacity and cost effectiveness remain unclear. In this study, four nano-iron materials (Fe nanoparticles (Fe-NPs), Fe 3 O 4 -NPs, α-Fe 2 O 3 -NPs and γ-Fe 2 O 3 -NPs) were compared with traditional iron fertilizers (FeSO 4 and Fe-EDTA). The results showed that the efficiency of traditional iron fertilizers decreased greatly under simulated rainfall conditions due to their poor leaching resistance. In contrast, nano-iron fertilizers performed exceptionally well under simulated rainfall conditions with significant increase in leaf iron concentration, photosynthesis and growth of peanut. This was mainly attributed to their decreased contact angle, increased wetting capacity and increased adhesion on plant surface, which collectively decreased fertilizer leaching remarkably. The adhesion capacity of Fe 3 O 4 -NPs (53.5 mN/m), was nearly three times that of traditional iron fertilizer (18.3 mN/m). Therefore, only a small amount of Fe 3 O 4 -NPs (4 mg/plant) was needed relative to traditional iron fertilizers (FeSO 4 , 59 mg/plant) to achieve comparable high leaf Fe concentration (1076.96 μg/g) under rainfall conditions. Cost evaluation suggests that the cost-competitiveness of Fe 3 O 4 -NPs will become comparable to that of FeSO 4 when its price comes down from the current cost of $139/kg to $36/kg, the cost of FeSO 4 , which is likely considering the pace of nano-material technology development. Together, these results demonstrate the remarkable potential of nano-iron fertilizers in mitigating the escalating fertilizer cost and improving the environmental outcomes of peanut, as well as potentially other crops grown in wet season.
研究领域:
农业科学
·
植物营养学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
Nanoscale Horizons
·
2025
·Vol. 10
·期 3
·561-567
·
IF 6.6
Yu Xing,Haoshen Ye,Guowei Du,Xu Li,Le-Ping Miao,Junchao Zhang,Xiong Luo,Xiyu Chen,Haoran Ye,Aoli Shen,Zhicheng Wang,Yumeng You,Shuai Dong,Linglong Li
The coexistence of electric and magnetic orders with intrinsic coupling, referred to as magnetoelectric coupling in multiferroics, has been extensively studied in oxide materials but remains relatively unexplored in van der Waals materials. Among these, CuCrP2S6 (CCPS) is notable for its emergent antiferromagnetic (AFM) and antiferroelectric (AFE) characteristics. However, investigations into magnetoelectric coupling in CCPS are limited, and the effects of dopants on its magnetic properties have yet to be fully addressed. In this study, we synthesized CuCr1−xFexP2S6 (CCFPS) samples using the chemical vapor transport (CVT) method to investigate the influence of iron doping on the magnetic and nonlinear optical properties of the CCFPS system. Our results indicate that the AFM state is preserved, while the Néel temperature (TN) varies with the doping concentration. First-principles calculations were employed to assess the exchange interactions among magnetic atoms. Notably, for samples with doping concentrations x < 0.5, we observed both magnetic-dielectric coupling and second harmonic generation (SHG) effects. However, these effects were absent at higher doping levels. Furthermore, our analysis revealed a distinct odd–even dependence of SHG, suggesting the presence of interlayer symmetry-breaking coupling. These findings advance our understanding of two-dimensional (2D) multiferroic materials and lay the groundwork for designing and optimizing magnetoelectric coupling materials with enhanced performance.
研究领域:
凝聚态物理
·
材料科学
·
二维材料
·
多铁材料
·
自旋电子学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）