SURFACE & COATINGS TECHNOLOGY
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2021
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IF 4.158
Hang Qin,Hui Zhou,Wenming Guo,Feiyang Yan,Hanning Xiao
A modified layer of ZnO coating with the thickness of about 0.57 μm has been uniformly deposited on carbon cloth by microwave-assisted modification technology for reversing the wettability of carbon cloth, resulting in the fabrication of ZnO/CC Mem. The inherent properties of carbon fibers absorbing microwave radiation and converting it into volumetric heating contribute to the uniform deposition of ZnO modified coating on carbon cloth. After modification, the WCA of as-prepared ZnO/CC Mem is 0° while the corresponding UWOCA is up to 158.4 ± 1.1°, exhibiting the excellent superhydrophilicity/underwater superoleophobicity. In the process of gravity driven oil-water separation, a high filtrate flux about 18,625 ± 100 L/(m 2 h), is found in the separation of oil-water mixture, and the corresponding separation efficiency is 99.9%; While for the treatment of simulated kitchen oily wastewater, a bilayer ZnO/CC Mem is used. The corresponding filtrate flux and separation efficiency are 15,880 ± 100 L/(m 2 h) and 99.8%, respectively. In addition, the fouled ZnO/CC Mem could restore the virgin performance by a simple cleaning process.
研究领域:
材料科学
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环境工程
✓ 已验证
DOI
高影响因子
Journal of Cleaner Production
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2022
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IF 11.072
Hongyu Tian,Lina Zhang,Jingjing Dong,Liang Wu,Fuli Fang,Yanfeng Wang,Hao Li,Chenshuo Xie,Wenjing Li,Zhanbo Wei,Zhiguang Liu,Min Zhang
Controlled-release fertilizers (CRFs) are a valid solution to agriculture's nonpoint source pollution problem. Due to surface structural defects in the fertilizer core, however, a large amount of coating material was wasted. A simple, fertilizer surface modification technique (SMT) that is based on abrasives was created in this study to modify the micro/nanostructure of the core surface, thereby considerably minimizing the amount of coating material and ensuring precise and long-term nutrient release. The effects of the SMT on the surface structure, roughness, and roundness of fertilizer cores were investigated, and a finite, element-based, interface polishing removal kinetic model and a discrete element, simulation-based, two-phase, fluid dynamics model were developed. The effect of core surface structural defects on the coating formation of CRFs and the controlled-release behavior of nutrients was observed at the micro- and nanoscale . The SMT improved the formed weak interfacial layer structure by urea crystals adsorbing water vapor, by reducing surface roughness by 64.43%, by improving overall particle fluidity, by increasing the proportion of urea with high roundness (0.950–0.975) by 8.72%, and by lessening the surface area of a single particle by 2.18%. At high temperatures, the surface was softened and deformed, allowing for the reconstruction of the surface microstructure and for a considerable improvement in interfacial bonding performance. The CRF nutrient release characteristics showed that the SMT enhanced the tightness and consistency of the coating, improved the precision of nutrient release, and reduced the use of coating material by up to 28.6% during the same release period. This novel technology has the potential to significantly optimize the production of CRF by reducing coating materials and residues in soil generated after nutrient release.
研究领域:
农业科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
Food Bioscience
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2025
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IF 5.9
Keke Meng,Yifan Wang,Xue Wang,Feifei Liu,Qiping Zhan,Liyan Zhao
Modified dietary fiber has shown great application potential in the fields of nutrition, food science and health. The aim of this study is to investigate the modification of dietary fiber of Flammulina velutipes by extrusion and expansion technology and cellulase. The differences of gut microbiota, SCFAs (short-chain fatty acids) and lead ion stress between FDF (Dietary Fiber from Flammulina velutipes ) and MFDF (Modified Dietary Fiber from Flammulina velutipes ) were clarified in vitro fermentation. The results demonstrated that the extrusion-cellulase technology could effectively reduce the molecular weight of FDF, adjust the monosaccharide composition and change the micromorphology. In vitro microbial fermentation results showed that FDF and MFDF adjusted the composition of gut microbiota, increased excellent lead ion adsorption capacity of intestinal flora, promoted the production of acetic acid, propionic acid, and n-butyric acid, increased the presence of beneficial bacteria such as Macrophages , Bifidobacterium , Faecalibacterium , and Mitsuokella , and reduced the levels of harmful bacteria such as Escherichia Shigella and Salmonella . In comparison, MFDF also showed better lead ion adsorption capacity of intestinal flora, produced more SCFAs and more significant biomarkers, highlighting a potential gut prebiotic role. This study provides valuable data support for the modified application of innovative processing techniques to edible fungi and highlights the potential application of dietary fiber-related functional products to promote gut health.
研究领域:
食品科学
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营养学
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微生物学
✓ 已验证
DOI
高影响因子
Gas Science and Engineering
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2024
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IF 0
Fuhua Wang,Zhihao Zhang,Weidong Zhang,Haitao Zhu,Luyi Wang,Li Liao
In the development of unconsolidated sandstone gas reservoirs, water and sand production pose challenges, reducing gas deliverability and causing reservoir damage. This paper presents a novel ternary water control and gas recovery technology using hydrophobic modification. The technology focuses on reversing capillary forces at the far-well edge of the reservoir to prevent water intrusion and creating a hydrophobic gravel layer around the wellbore to enhance water resistance. Additionally, the slotted liner cavities are treated to improve erosion resistance and maintain smooth gas flow , effectively controlling water and sand. The approach aims to minimize water and particle migration, thereby improving gas phase permeability. Researchers assessed the technology's effectiveness using a sand-gravel-slotted liner model and examined how sand wettability , gravel size, and liner slot width affect water resistance. Results show that the technology significantly reduces water phase permeability and gas sand content, increases water breakthrough pressure, and maintains the original permeability of the gas reservoir. When the formation sand contact angle θ sand > 156°, the particle size ratio D 50 / d 50 = 6.5, and the slit width is 0.30 mm, the water-resisting ability is the best. The research results can provide corresponding theoretical construction parameters for the field engineering of high-water cut-off loose sandstone gas reservoirs.
研究领域:
石油工程
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地质学
✓ 已验证
产品关联
DOI
Journal of Energy Storage
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2025
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IF 9.8
Honglei Chen,Shitao Liu,Ge Zhang,Jianhua Zhou,Shuo Wang,Liang Gu,Ruigang Yan,Zhihong Wang,Yaohui Zhang
Lithium (Li) metal is considered a highly prospective anode material for Li-ion batteries on account of its low redox potential and the specific capacity in theory. Nevertheless, the uncontrollable growth of Li dendrites poses a major obstacle to the lifetime and coulombic efficiency (CE) of Li-metal batteries, which is currently a critical issue hindering its wide application. Herein a two-step solution oxidation-reductions modification technology is developed to in-suit construct nanowire structures on the surface of commercial copper foam (CF). More importantly, this technology can reduce the previously required processing time of several hours to tens of hours down to the order of seconds. Furthermore, the CF with fine nanowire (CFNW) serves as highly efficient current collector for the anode in Li-metal batteries, effectively accommodating deposited Li and inhibiting dendrite formation. Consequently, the prepared CFNW current collector demonstrates a significantly enhanced cycling stability, achieving high coulombic efficiency (maintaining 98 % following 620 cycles with a current density of 1 mA cm −2 ), surpassing the performance of the CF current collector (98 % after 270 cycles at the same current density). Notably, the full cell incorporating LiFePO 4 as the cathode demonstrates enhanced cycling stability, maintaining 80 % of its initial capacity retention rate following 290 cycles under a rate of 1C. This work proposes highly convenient and rapid, commercially viable modification technology to commercial copper for a high-performance three-dimensional current collector of Li metal anodes.
研究领域:
材料科学
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电化学
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储能技术
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纳米技术
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电池技术
✓ 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）