ACS Applied Nano Materials
·
2024
·
IF 5.3
Chenzhi Zhang,Kailin Li,Tao Sun,Xiaoying Liu,Xingjian Dai,Quan Zhou,Dashuang Wang,Xinfang Zhang,Jiehang Ding,Xiaohan Huang,Jinsong Rao,Yi Hou,Ping-an Yang,Kechen Liu,Yuxin Zhang
Wideband absorption with low-frequency compatibility is always challenging for developing high-performance electromagnetic wave (EMW) absorbing materials. With magnetic loss and a sufficient polarization interface, ferrite materials are promising candidates for overcoming this challenge. To address impedance matching issues, a carrier material with a uniform pore distribution, namely, diatomite, is employed, resulting in a unique three-dimensional biomimetic structure. A biomimetic sea urchin-like nanomaterial composed of one-dimensional nanorod-shaped Fe3O4 (sea urchin-like nano-Fe3O4) is presented, demonstrating outstanding performance in EMW absorption. The optimized Fe3O4@FeP sample exhibits two absorption peaks spanning the C and Ku bands when the thickness is 5.35 mm. The experimental results show that the sea urchin-like nano-Fe3O4 achieves an astounding reflection loss of −60 dB at 6 GHz with a thickness of 3.9 mm and a maximum effective absorption bandwidth of 4 GHz at a thickness of 1.7 mm. This material design holds significant potential for low-frequency EMW absorption applications.
研究领域:
材料科学
·
电磁学
·
纳米技术
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产品关联
DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2025
·Vol. 46
·期 6
·118030
·
IF 6.2
Wei Wang,Qilin Guo,Zhe Wang,Donald B. Dingwell,Wenjia Song
Molten deposits originating from siliceous debris such as airborne dust, sand, or volcanic ash entrained into the intake air, represent a critical threat to the durability of thermal barrier coatings (TBCs). Such systems are usually approximated experimentally by on calcium-magnesium aluminosilicate melts (CMAS). While extensive studies have elucidated CMAS corrosion from the terrestrial sources listed above, the role of sea salts – ubiquitous in costal environments – remains unclear. Here, we investigate the effect of sea salt from four China sea regions on CMAS corrosion of TBCs. By integrating high-temperature wetting behavior, microstructural analysis and first-principles calculation, we demonstrate that the presence of sea salt accelerates TBC degradation and that its concentration governs its impact on CMAS melt fluidity, spreading, and degradation of TBCs. An optimized CMAS model is proposed to guide future corrosion assessments and design TBCs with improved tolerance to salt-accelerated degradation under coastal service conditions.
研究领域:
材料科学
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陶瓷涂层
·
高温腐蚀
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环境退化
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航空航天工程
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产品关联
DOI
高影响因子
Frontiers in Nutrition
·
2022
·
IF 6.59
Zhu Yulian,Liu Keshan,Yuen Michael,Yuen Tina,Yuen Hywel,Peng Qiang
Sea buckthorn peel is the by-product of the sea buckthorn processing, which contains many bioactive compounds. In this paper, sea buckthorn high methoxyl pectin (SBHMP) was obtained, with a yield of 8% and a light-colored. The SBHMP was a high methoxyl with a degree of esterification of 57.75% and uronic acid content of 65.35%. The structural and morphological characterization of SBHMP were analyzed by high-performance liquid chromatography, Fourier-transform infrared spectroscopy, and scanning electron microscopy. Results showed that SBHMP presented a sheet and layered stacked morphological, and was mainly composed of galacturonic acid, arabinose, galactose, rhamnose, and mannose, which indicated that SBHMP mainly consisted of homogalacturonan (HG) and rhamnogalacturonan-I (RG-I) type pectin polysaccharides. In addition, SBHMP also presented significant gel, thickening, and emulsifying properties. The results exhibited that SBHMP could form jelly-like gels under acid and high sucrose conditions, presenting a shear-thinning behavior and increasing apparent viscosity with the enhancement of pectin and sucrose contents. Besides, SBHMP could form oil-in-water emulsions with pectin concentrations of 1.0–3.0%. When the SBHMP concentrations were 2.0 and 3.0%, the emulsions were stable during 7 days of storage. Findings in this paper demonstrated the potential of SBHMP to be a food thickener and emulsifier and support the in-depth utilization of sea buckthorn by-products.
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DOI
PubMed
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2025
·
IF 7.3
Jiayin Li,Guangmeng Chen,Shuaipeng Wang,Jinyue Dai,Shuan Liu,Guangming Lu,Weiwei Zhao,Xiaoqing Liu
Traditional self-polishing marine antifouling coatings are mainly based on thermoplastic acrylic resins and polyurethanes, seawater degradable thermosetting resins are rarely reported. Here, we synthesized a seawater degradable epoxy resin (DIGE) containing pyrrolidone structure as the film former. The degradation rate and antifoulant releasing rate of the antifouling coatings (DIGE-EPs) were controlled by compounding DIGE with the commercial epoxy resin E51 in various mass ratios. The hydrolysis of pyrrolidone structure by ring-opening in weakly alkaline environment increased the hydrophilicity and influenced the electron density of neighboring ester bond electron clouds, which enhanced the hydrolysis of ester bonds. This allowed for the formation of a self-renewing surface. This degradation process was well monitored by surface topography, surface roughness, mass loss and surface water contact angle in the artificial seawater conditions. Antimicrobial tests revealed that DIGE-EP coatings maintained efficient antibacterial properties even after two months of hydrolysis, with the bactericidal rate reaching 99.7 % and 99.9 % against E. coli and S. aureus , respectively. In addition to the role of antifouling agent release from the inside of resin matrix, more importantly, it was related to the intrinsic antifouling property of the resin, resulting from the in-situ formed β-amino alcohol structure during curing and its nice hydrophilicity. Furthermore, the coating had excellent film properties, along with adhesion exceeding 8 MPa and impact strength reaching 90 kg·cm, which met the long-term use requirements. These combined advantages provide valuable insights for developing effective solutions to complex marine biofouling challenges.
研究领域:
材料科学
·
海洋生物学
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产品关联
DOI
高影响因子
Materials
·
2025
·Vol. 18
·期 12
·2818
·
IF 3.2
Wei Xie,Hao Ma,Chuangguang Cao,Yating Wang,Yanhui Qiao,Junjiang Teng,Ning Li,Chaochao Yue
Analcime has demonstrated potential for a variety of applications in technology, especially in adsorption and heterogeneous catalysis. In this study, synthetic analcime was investigated by using sea sand as a silica source. Sea sand was first treated with HNO3and NaOH. The pretreated sea sand as the silica resource and Al(NO3)3as the aluminum source were used for the hydrothermal synthesis of analcime with different ratios of Si/Al and Na/Si. The products obtained under different conditions were characterized by X-ray diffraction. The results showed that analcime synthesized using acid-treated sea sand was mixed with other impurities, such as quartz and sodalite. Pure analcime was obtained using alkali-treated sea sand as the silica source. The analcime prepared under an optimized synthesis condition was further investigated via SEM, FT-IR, and TG. The particle size of the prepared analcime ranged from 40 to 50 μm. The adsorption ability of analcime was studied, and the Cu2+adsorption process was found to follow apseudo-second-order kinetic model.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Water
·
2022
·Vol. 14
·期 15
·2445
·
IF 3.53
Xiaoying Tan,Pingping Dong,Hongping Min,Jinxue Luo,Wenhai Huang,Xiaodong Wang,Qingqing Li,Qile Fang
The excessive release of phosphorus is a prime culprit for eutrophication and algal bloom in the aquatic environment, and there is always an urgent need to develop effective methods to deal with phosphorus pollution. Ce-based oxide is a type of compelling adsorbent for phosphate removal, and a self-templating strategy is used to construct high-performance Ce-based oxides for phosphate adsorption in this study. A “sea anemone”-like CeFe cyanometallate (CM) with a 3D microstructure is fabricated to provide a precursor for synthesizing CeFe-based oxides (CeFe-CM-T) by high-temperature pyrolysis. The as-prepared CeFe-CM-T maintains the “sea anemone” morphology well and has abundant micropores/mesopores, which render its superior phosphate adsorption capacity 1~2 orders of magnitude higher than that of the commercial CeO2and Fe3O4materials. Moreover, CeFe-CM-T shows high selectivity for phosphate removal when it co-exists with other anions and natural organic matter and exhibits excellent recycling performance. It demonstrates that both Ce3+and Ce4+are reserved in the oxides, where Ce3+serves as the main active site for phosphate capture, which forms stable Ce-PO4compounds via a ligand-exchange mechanism. Thus, the self-templating strategy using CM as a precursor is a potential method for synthesizing porous Ce-based oxides for phosphate removal.Keywords:Ce-based oxides;self-templating strategy;cyanometallates;phosphate removal
研究领域:
环境科学
·
材料科学
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产品关联
DOI
高影响因子
Frontiers in Nutrition
·
2023
·
IF 5
Zhang Huirong,Song Guanjie,Ma Wenrui,Guo Miaomiao,Ling Xiao,Yu Dan,Zhou Weiqiang,Li Li
Introduction: Sea buckthorn (Hippophae rhamnoides) seed oil is rich in unsaturated fatty acids, and is thus susceptible to oxidation and rancidity. Microencapsulation technology allows the effective protection of active substances, thereby prolonging the deterioration time and shelf life.Methods: In this study, H. rhamnoides microcapsules were prepared using a spray-drying method, and the microencapsulation parameters were optimized. The morphological characteristics, structural parameters, and stability of the microcapsules were determined using scanning electron microscopy, Fourier transform infrared spectroscopy, thermogravimetric analysis, differential scanning calorimetry, and oil oxidation stability testing.Results: Based on encapsulation efficiency (EE, %) and the particle size (D50) of the microcapsules, the optimal preparation conditions were characterized as a wall material consisting of soy protein isolate and soybean polysaccharide (2:3), a wall concentration of 15%, a core-to-wall ratio of 1:3, and an inlet temperature of 160°C. Under these optimal conditions, the encapsulation efficiency was 95.30 ± 2.67%, with a yield of 57.03 ± 3.71% and a particle size of 7.96 ± 1.04 μm.Discussion: Furthermore, the effectiveness of microencapsulation in protecting the biological activity of H. rhamnoides seed oil was confirmed by an antioxidation test. Thus, the results of this study showcase the successful microencapsulation of H. rhamnoides seed oil, thereby significantly improving its stability.
研究领域:
食品科学
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药剂技术
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材料科学
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产品关联
DOI
PubMed
高影响因子
Advanced Healthcare Materials
·
2023
·
IF 10
Xinyu Yu,Fei Han,Xian Feng,Xin Wang,Yang Zhu,Cong Ye,Minrui Ji,Zhichao Chen,Ran Tao,Zhenyu Zhou,Fuyin Wan
The symptomatic management of hemorrhagic shock complicated by open fractures is a great challenge, because it is also complicated by complex wound bleeding, bacterial infection, and bone defects. Inspired by the water absorption and cross-sectional microstructure of sea cucumbers, in this study, a new sea cucumber-like aerogel (GCG) is proposed. Its aligned porous structure and composition can stop bleeding rapidly and effectively with a blood clotting index of 3.73 ± 1.8%. More importantly, the data of in vivo hemostasis test in an amputating rat tail hemostatic model (15.69 ± 2.45 s, 26.95 ± 8.43 mg) and liver puncture bleeding model (23.77 ± 2.68 s, 36.22 ± 16.92 mg) also indicate the excellent hemostatic performance of GCG. In addition, GCG also shows a significant inhibitory effect on S. aureus and E. coli , which can prevent the occurrence of postoperative osteomyelitis. Not only that, after filling in the bone defect, it is shown that this GCG aerogel completely degrades eight weeks after surgery and induces new bone ingrowth, achieving functional regeneration after hemostasis of an open fracture defect. Generally, because of its combination of hemostatic, antibacterial, and osteogenic activities, this new aerogel is a promising option for open fractures treatment.
研究领域:
生物材料
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止血工程
·
组织再生
·
伤口愈合
·
感染控制
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产品关联
DOI
PubMed
高影响因子
ACS Applied Nano Materials
·
2024
·
IF 5.3
Weiping Xiao,Yuhang Chen,Changwang Ke,Fengyan Han,Caiqin Wang,Xiaofei Yang
Constructing transition metal multiphase composites can improve the electrocatalytic efficiency of (sea)water splitting via interfacial interaction between adjacent active sites. Herein, the self-supporting NimSn-FeOx heterostructure is in situ grown on nickel foam (NF) through a corrosion engineering approach, which displays abundant dendritic array structures, endowing the material with abundant active sites and high electrocatalytic active area. The control of introducing Fe3+ and sulfur precursors can effectively trigger the phase transiting from Ni3S2 to Ni9S8, generating more S vacancies, which could reduce the reaction energy barrier and improve the electrocatalytic performance. Simultaneously, the presence of Fe–S bonding at the sulfide/oxide interface brings a strong electronic interaction, which enables the tuning of the adsorption energy of the reaction intermediates and accelerates the catalytic reaction kinetics. As a result, the Ni9S8–FeOx/NF-Fe8.0 catalyst presents low overpotentials of 159 mV and 190 mV for oxygen evolution reaction at 100 mA cm–2 under 1 M KOH solution and simulated seawater conditions, respectively. The overall water splitting incorporating the Ni9S8–FeOx/NF-Fe8.0 as both anode and cathode provides the potential of 1.707 V in 1 M KOH and 1.794 V in simulated seawater at 100 mA cm–2. This research furnishes an efficient strategy toward the design of advanced transition metal heterogeneous composites with strong interfacial interaction for (sea)water splitting.
研究领域:
材料科学
·
电化学
·
能源转换与存储
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产品关联
DOI
高影响因子
JOURNAL OF CHROMATOGRAPHY A
·
2025
·
IF 4
Ziwei Yang,Zhiwei Zhang,Ying Zhang,Xiaoqiang Chen
As the first step of resource utilization, the extraction and separation of active ingredients play an important role in the evaluation and application of their activity. In this study, a macroporous resin purification process was optimized to obtain high-purity sea buckthorn flavonoids (SBF). The AB-8 resin exhibited optimal adsorption and desorption properties, with adsorption and desorption rates of 75.25% and 84.78%, respectively. Under optimal purification conditions, the purity of the flavonoid extract was enhanced from 17.17 ± 0.19% to 63.2 ± 0.16%. Kinetic and thermodynamic analyses demonstrated that the purification of SBF on AB-8 resin conformed to the pseudo-secondary kinetic model and the Langmuir adsorption isotherm model. The major components of the SBF were taxifolin, isoquercitrin, narcissoside, and quercetin. The SBF not only inhibited lipopolysaccharide-induced nitric oxide production but also exerted significant anti-inflammatory effects, suppressing the expression of proteins such as nitric oxide synthase, tumor necrosis factor, interleukin 6, and interleukin 1β and inhibiting apoptosis. Therefore, the purified SBF demonstrated improved anti-inflammatory activity, which can be applied in the development of drugs and functional foods.
研究领域:
植物化学
·
药理学
·
生物技术
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产品关联
DOI
PubMed
高影响因子
Journal of Energy Storage
·
2024
·
IF 8.9
Yize Li,Weiqiang Zhou,Xuemin Duan,Danqin Li,Jingkun Xu,Zian Huang,Xiaojing Hao
Exploring high-performance metal oxide electrode materials is an essential way to boost the supercapacitor performance, and metal atom doping can significantly increase oxygen vacancies to improve the conductivity of electrode materials. A hydrothermal method is proposed for the preparation of sea urchin-like Pr-doped W 18 O 49 . A series of characterizations detected that Pr-doped W 18 O 49 produced significant lattice distortion and more amorphous regions, and the better electrochemical performance came from the increased concentration of oxygen vacancies, enlarged lattice spacing, higher specific surface area, and faster ion transport after Pr doping. Electrochemical measurements indicate that the specific capacitance of Pr-doped W 18 O 49 is improved from 381 F g −1 to 453 F g −1 at 3 A g −1 and exhibits a remarkable capacity retention of 95.6 % over 4000 cycles. An asymmetric supercapacitor assembled with this electrode and PPy achieved a high energy density of 21.9 Wh kg −1 at a power density of 701.5 W kg −1 , indicating the significance of Pr-doped W 18 O 49 for energy conversion and storage applications.
研究领域:
材料科学
·
能源存储
·
电化学
✓ 已验证
DOI
高影响因子
npj Flexible Electronics
·
2025
·
IF 15.5
Zheng Qingyang,Zhang Daohui,Bu Tianzhao,Fu Xin,Xu Naijia,Liu Shaoyu,Zhou Sen,Xie Bin,Chen Shuwen,Lim Chwee Teck,Wu Changsheng,Wu Hao
The non-destructive operation of intelligent underwater robotics with human-like sensory capabilities is essential for deep-sea resource exploration. However, extreme deep-sea hydrostatic pressure easily distorts sensor signals or damages devices, and detecting hundred-pascal-level contact forces under tens-of-megapascal hydrostatic pressures presents a critical challenge that hinders the advancement of underwater tactile sensing technology. Inspired by deep-sea sponges’ hydrostatic skeletal supporting mechanisms, we developed a fully open-pore hydrophobic ionogel as the sensing layer to construct a biomimetic deep-sea tactile sensor. The contact force is converted into electrical signals for object classification and non-destructive manipulation of marine organisms. This innovative sensing layer features aquatic stability and a pore structure balancing internal-external hydrostatic pressure, reducing environmental disturbances. The sensor maintains stable contact force detection under 50 MPa hydrostatic pressure, and accurately classify objects of varying hardness with an overall recognition accuracy of 95.5%, holding great potential for deep-sea exploration and sustainable resource exploitation.
研究领域:
机器人学
·
传感器
·
仿生工程
·
海洋技术
·
柔性电子学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）