CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Xiang Li,Shifeng Yin,Lei Cai,Zilong Wang,Chengyong Zeng,HaoJie Jiang,Jie Cheng,Wei Lu
The development of electromagnetic wave absorbing materials with lightweight and high absorption capacity is an effective way to solve electromagnetic wave pollution. Although the two-dimensional MXene material has become one of the most attractive electromagnetic wave absorbing materials due to its unique structure, the poor impedance matching makes it difficult to obtain both lightweight and efficient absorption capacity. Herein, few-layer MXene sheets and sea-urchin-like NiCo 2 S 4 (NCS) hybrids were successfully synthesized by a simple electrostatic self-assembly method. MXene/NCS hybrids achieve good absorption performances. The maximum absorption bandwidth is 5.6 GHz at a matching thickness of only 1.53 mm with a filling ratio of only 10 wt%. In addition, the excellent microwave absorption performance is attributed to the improved impedance matching of MXene and the synergistic effects of dielectric loss and interfacial polarization. This work provides new ideas for the design and synthesis of materials with lightweight and efficient electromagnetic wave absorption.
研究领域:
材料科学
·
电磁学
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产品关联
DOI
高影响因子
Small
·
2025
·
IF 12.1
Yinying Wang,Qu Zhang,Tao Wang,Yafen Zheng,Dongling Wu
Aqueous zinc-ion batteries (AZIBs), characterized by excellent safety, cost-effectiveness, and environmental friendliness, have emerged as a research focus in metal batteries. However, their low capacity and poor temperature adaptability hinder their practical application. Herein, deep eutectic solvents (DESs) are used as solvents, morphology assistants, and reducing agents to synthesize a sea-urchin-like Cu 2 O@CuO heterojunction composite. This unique interfacial structure significantly accelerates ion diffusion and generates additional active sites. Characterization and theoretical calculations indicate that the heterojunction interface provides additional electromotive force, effectively promoting electron migration. The scanning electrochemical cell microscope (SECCM) has the capability to visually map heterogeneous interfaces and identify Zn 2+ storage sites, and thus allows for their visualization. Furthermore, a gel electrolyte is prepared by dissolving PVA in one of the DES components. Notably, the flexible AZIB assembled using the prepared Cu 2 O@CuO and gel electrolyte displays a specific discharge capacity of 337.1 mAh g −1 and demonstrates broad temperature applicability within the range of −25–60 °C. In this study, the functionalization of DES is utilized to prepare Cu 2 O@CuO, which paves a novel route for the synthesis of more metal oxide heterostructure electrode materials.
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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纳米材料
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电池技术
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产品关联
DOI
PubMed
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2024
·
IF 8.2
Minglan Xu,Narcisse Tsona Tchinda,Siyang Li,Lin Du
The chemical composition of aerosols plays a significant role in aerosol-cloud interactions and, although saccharides make up their largest organic mass fraction, the current process model for understanding sea spray aerosol (SSA) composition struggles to replicate the enrichment of saccharides that has been observed. Here, we simulated the generation of SSA and quantified the enrichment of two soluble saccharides (glucose and trehalose) in SSA with a homemade sea spray aerosol generator. The results of the generation experiments demonstrated that both saccharides, especially trehalose, can promote the generation of SSA, whereas surface-active fatty acids primarily inhibit SSA production due to fewer bubble bursts caused by a large amount of foam accumulation. A significant decrease in surface tension of seawater with the addition of fatty acids was observed, while only a minor decrease was observed for seawater with the addition of only saccharide. Enrichment factors (EFs) of saccharides measured using high performance anion-exchange chromatography (HPAEC) with pulsed amperometric detection (PAD) revealed no enrichment of glucose in submicron SSA, while trehalose showed a slight enrichment. In the presence of surface-active fatty acids on the seawater surface, a significant increase in the enrichment of saccharides in SSA was observed, with glucose and trehalose showing EF of approximately 27-fold and 58-fold, respectively. Besides, this enrichment was accompanied by the accumulation of calcium and magnesium ions. The results presented here suggest that the coupling interaction mechanism of soluble saccharides and surface-active fatty acids on the ocean surface contributes to the enrichment of soluble saccharides in SSA.
研究领域:
大气科学
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海洋化学
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产品关联
DOI
PubMed
高影响因子
PROCESS BIOCHEMISTRY
·
2024
·
IF 3.7
Yang Xu,Bo OuYang,Linye Deng,Mei Liao,Tianhui Tang,Dongming Lan,Yonghua Wang
Chitin represents the most abundant source of renewable biomass in marine ecosystems, and its degradation by chitinase holds potential for numerous industrial applications. In this study, a novel hyperthermophilic chitinase, TbChi52, derived from a deep-sea bacterium of the Thermotogae phylum was introduced. TbChi52 exhibits optimal enzymatic activity at 90 ℃ and pH 5.5. Furthermore, it shows exceptional thermal stability characterized by a prolonged thermal denaturation half-life and a significant melting temperature. Functionally, TbChi52 displays dual activities, acting as both an exo-chitinase and a β-N-acetylaminoglucosidase (NAGase). It yields N-acetyl-D-glucosamine (GlcNAc) as the primary product during the hydrolysis of colloidal chitin. Leveraging the robust thermo-stability of TbChi52, a streamlined, one-step purification protocol was developed. A mere 10-minute thermal treatment at 75 ℃ suffices to yield a highly pure TbChi52 preparation with minimal enzyme activity loss in chitin hydrolysis, achieving an 87.4 % hydrolysis rate of colloidal chitin and a 92.7 % purity of GlcNAc. Collectively, the outstanding thermal properties and the simple preparation of TbChi52 highlight its potential for industrial applications. It provides a sustainable and eco-friendly approach to harnessing the world's most abundant marine biomass, along with serving as a potential enzyme-engineered template tailored for specific applications.
研究领域:
海洋生物学
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酶学
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工业生物技术
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产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2025
·Vol. 36
·期 4
·1-13
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IF 2.8
Li Yanmei,Hu Jin,Deng Zhongshan,Huang Huachao,Liu Zheng,Fu Jiaxin,Wang Kaijun,Wang Kaizhao,Feng Yongjin,Zhang Weijun
High-performance supercapacitors are essential for advancing energy storage devices, and superior active materials are crucial for this purpose. W 18 O 49 is recognized as a highly promising electrode material, such as in the form of nanowires and nanorods, for energy conversion and storage. However, it still faces challenges like low conductivity and insufficient active sites. The strategy of heteroatom doping has shown effectiveness, such as tin (Sn), which has potential for enhancing matrix performance, but it has not been explored for W 18 O 49 materials. Herein, a series of Sn-doped W 18 O 49 materials are carefully designed and synthesized using a straightforward one-pot solvent-thermal method in this study. Various analyses are conducted to confirm successful Sn doping and to observe structural changes with different Sn concentrations. The optimal material is identified as 3% Sn-W 18 O 49 , which displays a unique 3D sea urchin-like structure as observed via SEM and TEM. Furthermore, XRD peaks related to SnO impurities are noted at higher Sn doping levels, such as 5% and 7% Sn-W 18 O 49 . Electrochemical testing reveals a high specific capacitance of 546 F∙g −1 at 4 A∙g −1 for the 3% Sn-W 18 O 49 electrode, alongside excellent long-term cycling stability with an 86% capacitance retention after 6000 GCD cycles. The enhanced performance is attributed to the improved electrical conductivity, surface area, and active sites of the W 18 O 49 through optimal Sn doping. This research highlights the promising electrochemical properties of Sn-doped W 18 O 49 materials.
研究领域:
材料科学
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能源存储
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纳米技术
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产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2025
·
IF 9.8
Dehao Meng,Dongbo Zhao,Zhichao Zhao,Xiaoxue Wang,Yi Wu,Yonghui Li,Zhaolin Lv,Qilin Zhong
To clarify the aromatic compounds of sea buckthorn and their formation pathways, the key aroma compounds in Hippophae rhamnoides subsp. sinensis were determined first. There were 21 compounds identified as the key aroma components (e.g. ethyl isovalerate, ethyl caproate, ethyl octanoate, 1-hexanol, 1-nonanol, phenylethyl alcohol, nonanal, 6-methyl-5-heptene-2-one) of sea buckthorn, which were mainly composed of esters and alcohols. There were obvious differences in the composition of compounds among Hippophae rhamnoides subsp. sinensis (SI, SS) and Hippophae rhamnoides subsp. thibetana (TS). Esters were the main volatiles of Hippophae rhamnoides subsp. sinensis (SI, SS), while alcohols were the main volatiles of Hippophae rhamnoides subsp. thibetana (TS), which resulted in a lack of overall aromas in TS and a strong fruity and winy odor in SI and SS. The aroma of sea buckthorn could be reproduced well by analyzing key aroma components. Additionally, oleic acid, linoleic acid, leucine, phenylalanine, lycopene, and other compounds generated key aroma compounds by fatty acid oxidation pathway, amino acid degradation pathway, mevalonic acid pathway, methylerythritol phosphate pathway, carotenoid degradation pathway. Therefore, the key aroma compounds in sea buckthorn berries and their metabolic pathways were studied in the paper, which provided the research basis for genetic breeding and fine processing of sea buckthorn.
研究领域:
植物学
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代谢组学
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食品科学
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产品关联
DOI
PubMed
高影响因子
Antioxidants
·
2024
·Vol. 13
·期 10
·1268
·
IF 6
Weilong Zhou,Haolong Zheng,Yingyin Wu,Junyi Lin,Xiaofei Ma,Yixuan Xing,Huilong Ou,Hebert Ely Vasquez,Xing Zheng,Feng Yu,Zhifeng Gu
The escalating impact of human activities has led to the accumulation of microplastics (MPs) and heavy metals in marine environments, posing serious threats to marine ecosystems. As essential components of oceanic ecosystems, large seaweeds such as Caulerpa lentillifera play a crucial role in maintaining ecological balance. This study investigated the effects of MPs and cadmium (Cd) on the growth, physiology, biochemistry, and Cd accumulation in C. lentillifera while elucidating the underlying molecular regulatory mechanisms. The results demonstrated that exposure to MPs alone significantly promoted the growth. In contrast, exposure to Cd either alone or in combination with MPs significantly suppressed growth by reducing stem and stolon length, bud count, weight gain, and specific growth rates. Combined exposure to MPs and Cd exhibited the most pronounced inhibitory effect on growth. MPs had negligible impact while Cd exposure either alone or combined with MPs impaired antioxidant defenses and exacerbated oxidative damage; with combined exposure being the most detrimental. Analysis of Cd content revealed that MPs significantly increased Cd accumulation in algae intensifying its toxic effects. Gene expression analysis revealed that Cd exposure down-regulated key genes involved in photosynthesis, impairing both photosynthetic efficiency and energy conversion. The combined exposure of MPs and Cd further exacerbated these effects. In contrast, MPs alone activated the ribosome pathway, supporting ribosomal stability and protein synthesis. Additionally, both Cd exposure alone or in combination with MPs significantly reduced chlorophyll B and soluble sugar content, negatively impacting photosynthesis and nutrient accumulation. In summary, low concentrations of MPs promoted C. lentillifera growth, but the presence of Cd hindered it by disrupting photosynthesis and antioxidant mechanisms. Furthermore, the coexistence of MPs intensified the toxic effects of Cd. These findings enhance our understanding of how both MPs and Cd impact large seaweed ecosystems and provide crucial insights for assessing their ecological risks.
研究领域:
海洋生态学
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环境毒理学
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分子生物学
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植物学
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产品关联
DOI
PubMed
高影响因子
Foods
·
2026
·Vol. 15
·期 4
·673
·
IF 6
Xinmiao Ren,Yiling Zhong,Changyun Wang,Qingping Liang,Shuang Li,Rongqiang Chen,Dongyu Li,Changliang Zhu,Xiaodan Fu,Haijin Mou
Sea cucumber viscera by-products are abundant but remain underutilized. Although the development of umami peptides from marine by-products has been well-reported, sea cucumber viscera have received less attention. In this study, an umami-rich hydrolysate was prepared from sea cucumber viscera through synergistic dual-enzyme hydrolysis. Under optimal conditions, the co-hydrolysis using Flavourzyme and aminopeptidase yielded extraction rates of 69.38% for solids, 67.29% for protein, and 66.96% for total sugar, and produced a 1.75-fold higher umami signal intensity (electronic tongue) than the single-enzyme (Flavourzyme) hydrolysate. The target umami fraction was enriched through sensory-guided separation combined with ultrafiltration and ion-exchange chromatography. Thirty-three umami peptides, predominantly derived from actin hydrolysis, were identified in this fraction via peptidomics and virtual screening. Based on docking simulations against the umami receptor T1R1/T1R3, two peptides (DFLDDGPG and SDTGNFGF) with the lowest docking scores were selected. The predictions revealed that two peptides bind to the T1R3 subunit via hydrogen bonds and π-related interactions. The umami-enhancing effect of peptide DFLDDGPG in salty systems was demonstrated by a trained panel (n= 10) across concentration ranges of 0.1–1.0 mg/mL peptide and 0.1–1.0% NaCl, with a positive correlation validated by RSM and ANOVA (p< 0.05). This study identified novel umami peptides from sea cucumber by-products as promising candidates for natural, low-sodium flavor enhancers.
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2020
·
IF 9.038
Yanbiao Liu,Shengnan Yang,Hualin Jiang,Bo Yang,Xiaofeng Fang,Chensi Shen,Jianmao Yang,Wolfgang Sand,Fang Li
Advanced nanotechnologies for efficient arsenic decontamination remain largely underdeveloped. The most abundant inorganic arsenic species are neutrally-charged arsenate, As(III), and negatively-charged arsenite , As(V). Compared with As(V), As(III) is 60 times more toxic and more difficult to remove due to high mobility. Herein, an electrochemical filtration system was rationally designed for one-step As(III) decontamination . The key to this technology is a functional electroactive carbon nanotube (CNT) filter functionalized with sea urchin-like FeOOH. With the assistance of electric field, CNT-FeOOH anodic filter can in situ transform As(III) to less toxic As(V) while passing through. Then, as-produced As(V) could be effectively sequestrated by FeOOH. The sufficient exposed sorption sites, flow-through design, and filter’s electrochemical reactivity synergistically guaranteed a rapid arsenic removal kinetic. The underlying working mechanism was unveiled based on systematic experimental investigations and theoretical calculations. The system efficacy can be adapted across a wide pH range and environmental matrixes. Exhausted CNT-FeOOH filters could be effectively regenerated by chemical washing with diluted NaOH solution. Outcomes of the present study are dedicated to provide a straightforward and effective strategy by integrating electrochemistry , nanotechnology, and membrane separation for the removal of arsenic and other similar heavy metals from water bodies.
研究领域:
环境科学
·
纳米技术
·
电化学工程
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DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Jiaxun Yang,Hailong Yu,Feng Zhen,Zhongyang Zhang,Liping Wang,Lingling Zhang,Liubin Ben,Bin Qu,Xuejie Huang
Electronically and ionically conductive sulfur-based cathode materials play a pivotal role in improving the electrochemical capabilities of high-energy rechargeable batteries. Among these, vanadium tetrasulfide (VS 4 ) stands out for its remarkable specific capacity and cost-effectiveness, marking it as a notable contender. However, its intrinsic low conductivity and significant volume expansion during cycling pose challenges for its adoption in rechargeable batteries. Here, we introduce a “sea urchin”-like VS 4 cathode material, characterized by a microsized core coupled with nanosized spines. This distinctive architecture is used to exploit the benefits of both micro- and nanosized electrode materials. The nano-sized spines, abundant in active sites, facilitate rapid electron and lithium-ion transport, thereby boosting catalytic activity. Moreover, the distinctive architecture offers ample space to accommodate volume expansion during cycling. The "sea urchin"-like VS 4 cathode demonstrates a substantial specific capacity of approximately 994.1 mAh g −1 or 1671.7 Wh kg −1 , maintaining a capacity of 670.0 mAh g −1 after 100 cycles at a 0.5 C rate. Furthermore, the unique morphology of the VS4 cathode ensures structural stability and minimal volume change during use, owing to the sufficient internal space. Our study facilitates potential of morphological innovations to enhance the electrochemical performance of electrode materials.
研究领域:
材料科学
·
电化学
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Jianshan Yang,Yongjin Zou,Sanxia Zhang,Zongliang Yu
Transition metal oxides are widely used as electrode materials for supercapacitors due to their high capacitance and stability. Composite materials comprising two transition metal oxides may exhibit enhanced performance based on the properties of each material. In this study, a two-step hydrothermal method was used to fabricate CoMn 2 O 4 needle clusters loaded with Fe 2 O 3 structures. CoMn 2 O 4 serves as an excellent bimetallic oxide electrode material for supercapacitors and acts as a scaffold for loading Fe 2 O 3 particles, thereby further improving electrochemical performance. CoMn 2 O 4 @Fe 2 O 3 exhibited a high specific capacitance of 760 F g −1 at 1 A g −1 . The CoMn 2 O 4 @Fe 2 O 3 //GO asymmetric supercapacitor achieved a high energy density of 21.3 Wh kg −1 at 4021 W kg −1 and 36.3 Wh kg −1 at 803.4 W kg −1 , with a capacitance retention of 83 % after 10,000 cycles.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
Food Chemistry-X
·
2026
·
IF 9.2
Xinran Li,Enhui Ma,Qiang Geng,Jian Jiao,Songyi Lin
Sea cucumber collagen fibers (SCCF) are important nutritional and functional resources in aquatic foods, yet their interactions with flavor compounds remain insufficiently understood. This study innovatively applied pH-shifting extraction to isolate sea cucumber collagen fiber proteins extracted at alkaline (ALP), neutral (NP), and acidic pH (ACP), revealing conformation-dependent mechanisms in flavor binding. Key amino acids (Glu, Gly, Phe) were identified as crucial for structural stability and binding potential. Multi-spectroscopic analyses demonstrated that flavor interaction induced significant conformational changes: a reduction in α-helix and β-sheet content, with an increase in β-turns and random coils. FL and FTIR spectra confirmed that hydrogen bonding and hydrophobic interactions were the dominant forces driving complex formation. The molecular weight distribution and amino acid composition of the proteins varied substantially with extraction pH, directly influencing their distinct flavor-binding capacities. These findings provide a novel strategy for optimizing flavor retention in seafood by tailoring protein extraction conditions.
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DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）