APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Jingyi Yang,Yongzhen Gao,Jie Fan,Jieqiong Wang,Tao Yang,Zezheng Bing,Meng Zhang,Zhongyi Liu
Tuning the metal-support interaction (MSI) between highly dispersed nanosized metal particles and the support plays a pivotal role in the activity and selectivity of polyaromatics selective hydrogenation. In this work, the supported bimetallic Ni-Ru/SiO 2 -SEA catalyst was prepared by a strong electrostatic adsorption (SEA) strategy, and applied for the selective hydrogenation of biphenyl (BP) to cyclohexylbenzene (CHB). Compared to the catalysts prepared by the conventional incipient wetness impregnation method and Ni/SiO 2 -SEA, the significant effects of MSI and hydrogen spillover on Ni-Ru/SiO 2 -SEA facilitated the highly exposed and uniformly dispersed electron-deficient Ni δ+ (0 < δ < 2) species, which could enhance adsorption and activation of the electron-withdrawing phenyl group and H 2 , thereby promoting the efficient and selective conversion of BP to CHB. At the conditions of 160 ℃ and 2 MPa H 2 pressure, BP conversion over Ni-Ru/SiO 2 -SEA reached nearly 100 % within 3 h, achieving a remarkable selectivity of 97.9 % towards CHB, along with a high turnover frequency of 2756.9 h −1 for the active metallic Ni sites. Importantly, according to the kinetic simulations, the hydrogenation rate constant of Ni-Ru/SiO 2 -SEA was the highest (2.76 × 10 -2 mol·g −1 ·h −1 ) among the employed catalysts. Moreover, after six consecutive cycles, no obvious decline in hydrogenation efficiency was observed, confirming the remarkable activity and stability of Ni-Ru/SiO 2 -SEA. Furthermore, the activation of BP and desorption of CHB pathway on the Ni δ+ species were elaborated through temperature-programmed desorption characterization, highlighting the prominent contribution of MSI in enhancing the selective hydrogenation of polyaromatics.
研究领域:
催化化学
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材料科学
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DOI
高影响因子
Biosensors-Basel
·
2023
·Vol. 13
·期 8
·831
·
IF 5.4
Shengjie Hu,Xuecheng Jiang,Liang Yang,Xue Tang,Guofeng Yang,Yuanyuan Hu,Jie Wang,Naiyan Lu
Schistosomiasis, typically characterized by chronic infection in endemic regions, has the potential to affect liver tissue and pose a serious threat to human health. Detecting and screening for this disease early on is crucial for its prevention and control. However, existing methods encounter challenges such as low sensitivity, time-consuming processes, and complex sample handling. To address these challenges, we report a soluble egg antigen (SEA)-based functionalized gridless and meander-type AlGaN/GaN high electron mobility transistors (HEMT) sensor for the highly sensitive detection of antibodies toSchistosoma japonicum. Immobilization of the self-assembled membrane on the gate surface was verified using a semiconductor parameter analyzer, scanning electron microscope (SEM), and atomic force microscopy (AFM). The developed biosensor demonstrates remarkable performance in detecting anti-SEA, exhibiting a linear concentration range of 10 ng/mL to 100 μg/mL and a sensitivity of 0.058 mA/log (ng/mL). It also exhibits similar excellent performance in serum systems. With advantages such as rapid detection, high sensitivity, miniaturization, and label-free operation, this biosensor can fulfill the requirements for blood defense.Keywords:biomedical sensor;AlGaN/GaN high electron mobility transistors (HEMT);Schistosoma japonicum;soluble egg antigens (SEA);rapid detection
研究领域:
生物医学工程
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传染病学
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传感器技术
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DOI
PubMed
高影响因子
ACTA OCEANOLOGICA SINICA
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2014
·Vol. 33
·期 9
·100-108
·
IF 0.684
Kang Xuming,Liu Sumei,Zhang Guoling
Cold diffusion methods are used to separate and quantify the three reduced inorganic sulfur species into acid volatile sulfide (AVS), pyrite-S and element sulfur (ES) in the sediments of the Yellow and East China Seas. The results show that up to 25.02 μmol/g of AVS, 113.1 μmol/g of pyrite-S and 44.4 μmol/g of ES are observed in the sediments of the Yellow Sea and East China Sea. Pyrite-S is the predominant sulfide mineral in the sediments, while the concentration of AVS is quite low at most stations in the study area. The amounts and reactivity of organic matter are the primary limited factor for the sulfide formation, while an iron limitation and a sulfate limitation are not observed in the sediments of the Yellow Sea and East China Sea. The irregular profiles of the three reduced inorganic sulfur species also reflected the comprehensive influence of sediment composition and sedimentation rates.
研究领域:
海洋学
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环境科学
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DOI
高影响因子
Polymers
·
2020
·Vol. 12
·期 1
·152
·
IF 3.426
Xueyan Zhang,Imran Mahmood Khan,Hua Ji,Zhouping Wang,Huili Tian,Wenbo Cao,Weiyu Mi
Staphylococcal enterotoxin A (SEA) is a worldwide public health problem accounting for the majority of food poisoning which is produced byStaphylococcus aureus, threatening human health and leading to various foodborne diseases. Therefore, it is of great significance to develop a sensitive detection method for SEA to ensure food safety and prevent foodborne diseases in humans. In this study, an adaptive fluorescence biosensor for the detection of staphylococcal enterotoxin A (SEA) was designed and developed by combining DNA silver nanoclusters (DNA-AgNCs) with polypyrrole nanoparticles (PPyNPs). Fluorescent AgNCs, synthesized using aptamers as templates, were used as fluorescence probes, whose fluorescence was quenched by PPyNPs. In the presence of the target SEA, DNA-AgNCs were forced to desorb from the surface of PPyNPs through the binding of SEA with the aptamer-DNA-AgNCs, thereby resulting in fluorescence recovery. Under the optimized conditions, the relative fluorescence intensity (FI) showed a linear relationship with the SEA concentration in the range from 0.5 to 1000 ng/mL (Y= 1.4917X+ 0.9100,R2= 0.9948) with a limit of detection (LOD) of 0.3393 ng/mL. The sensor was successfully used to evaluate the content of SEA in milk samples, and the recovery efficiency of SEA was between 87.70% and 94.65%. Thus, the sensor shows great potential for application in food analysis. In short, the proposed platform consisted of an aptamer fluorescent sensor that can be used for the ultrasensitive detection of various toxins by taking advantage of the excellent affinity and specificity of corresponding aptamers.Keywords:staphylococcal enterotoxin A (SEA);aptamer-functionalized AgNCs;polypyrrole nanoparticles (PPyNPs);fluorescence aptasensor detection
研究领域:
食品安全
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生物传感器
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纳米技术
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分析化学
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DOI
PubMed
高影响因子
MARINE POLLUTION BULLETIN
·
2025
·
IF 4.9
Limin Wang,Aiquan Dai,Yufei Dai,Li Lu,Xinyu Li,Jing Zhao,Keqiang Li
Pesticide residues and their accumulation in marine environments pose potential threats to the ecosystem balance and human health. Assessment of pesticide residue levels and ecological risks in marine waters is insufficient. Therefore, we conducted a quantitative analysis of four different categories of pesticides in the surface waters of the Bohai Sea and Yellow Sea in China. A comprehensive ecological risk assessment framework was constructed based on the importance of ecosystem services, utilizing the risk quotient (RQ) and entropy weighting methods to evaluate the multi-pesticide ecological risks in the study area. Thirteen pesticides were detected in the surface waters, with total concentration levels ranging from 8.18 to 80.60 ng/L, and the herbicide Atrazine and insecticide Imidacloprid were found at the highest levels. Concentration levels were higher in the Bohai Sea than in the Yellow Sea, and the highest area was mainly located on the coast of Shandong Province, China. The ecological risk of multi-pesticide pollution was the highest in the coastal regions of Shandong and was associated with Atrazine and Acetamiprid. Source analysis suggested that triazine herbicide and neonicotinoid insecticides are predominantly land-sourced, whereas sulfonylurea herbicides are primarily atmospheric. This study provides valuable support for formulating relevant environmental protection policies and measures.
研究领域:
环境科学
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海洋生态学
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DOI
PubMed
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2021
·
IF 10.588
Zhisong Cui,Xiao Luan,Shujun Li,Yingchao Li,Xinqi Bian,Guoqing Li,Qinsheng Wei,Xiangbin Ran,Mutai Bao,David L. Valentine
Cyclic alkanes (c-alkanes) are toxic compounds that are abundant in subsurface oil reservoirs and spilled condensate; hence, their environmental risk is significant. Although numerous studies have focused on the decomposition of other compound classes, e.g., acyclic alkanes and aromatic hydrocarbons, very little is known about the biodegradation of c-alkanes in the marine environment. Here, we enriched methylcyclohexane (MCH)-degrading bacteria derived from the cold bottom water (10–20 °C) of China’s marginal seas in summer and characterized the changes to the bacterial community using high-throughput amplicon sequencing. MCH-consuming bacteria failed to grow from the warmer surface water (25–29 °C) in the same geographic sites and seasons. Notably, MCH-consuming communities derived from the cold bottom water in the Yellow Sea exhibit distinct structures compared to the other treatments. Furthermore, almost all dominant species in this setting appear to be specifically adapted to deeper cold water as indicated by significantly negative correlations to temperature ( P < 0.01). From these results, we proposed that the biodegradation of MCH is effectively limited to the colder waters (10–20 °C) of China’s marginal seas, with uncultured psychrophiles acting as the key taxa for MCH decomposition. Overall, this study indicates key functions for uncultivated microbes in the marine environment.
研究领域:
微生物学
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环境科学
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海洋生物学
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DOI
PubMed
高影响因子
CARBOHYDRATE POLYMERS
·
2024
·
IF 10.7
Haojie Ni,Huatao Li,Wenna Hou,Jian Chen,Song Miao,Yanbo Wang,Huan Li
The widespread use of disposable plastic straws has caused a long-lasting environmental problem. Potential alternatives for plastic straws are far from satisfactory due to the low utility, poor water stability, and non-ideal natural degradability. In this work, an edible, hydrostable, and degradable straw was developed from the economically significant seaweed. Seaweed-derived insoluble cellulose fibers were used as the building block of the straw, and the soluble polysaccharide extracts were explored as the natural glue through the chelation with Ca 2+ . Repeated freeze-thawing was introduced to strengthen the molecular interactions, which further improved its mechanical stability and hydrostability. The straw exhibited remarkable natural degradability in open environments, particularly in marine-mimicking conditions. By incorporating pH-sensitive food pigments, the straws could indicate acid-base property of a beverage or even discriminate the freshness of milk. The versatile seaweed-derived straw adhered to the biocycle concept of “from sea to sea” to alleviate the burden of white pollution on oceans.
研究领域:
环境科学
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材料科学
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生物技术
·
可持续发展
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DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2017
·
IF 4.529
Xin Zhou,Da-Yong Zhou,Ting Lu,Zhong-Yuan Liu,Qi Zhao,Yu-Xin Liu,Xiao-Pei Hu,Jiang-Hua Zhang,Fereidoon Shahidi
Sea urchin gonad has been regarded as a “healthy” food. Although previous studies have suggested that sea urchin gonad might serve as a potential rich source of long chain omega-3 polyunsaturated fatty acids (n-3 LC-PUFA) enriched phospholipid (PL), the molecular species profile of its PL has rarely been reported. In this study, about 200 molecular species of glycerophospholipid (GP), including glycerophosphocholine, glycerophosphoethanolamine, glycerophosphoserine, glycerophosphoinositol, lysoglycerophosphocholine and lysoglycerophosphoethanolamine, in gonads from three species of sea urchin ( Glyptocidaris crenularis , Strongylocentrotus intermedius and Strongylocentrotus nudus ) were characterized using tandem mass spectrometry. Most of the predominant GP molecular species contained PUFA, especially eicosapentaenoic acid (EPA). Meanwhile, the sea urchin lipids contained a high proportion of PL (39.45–50.30% of total lipids) and PUFA (34.47–46.56% of total FA). Among PL, phosphatidylcholine (67.88–72.58 mol%) was dominant. Considering the high level of PUFA enriched GP, sea urchin gonads provide great potential as health-promoting food for human consumption.
研究领域:
生物化学
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食品科学
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DOI
高影响因子
Cell Reports
·
2026
·Vol. 45
·期 7
·
IF 7.7
Zhimeng Li,Baihui Chi,Chujin Ruan,Lei Song,Liqin Dong,Ang Li,Tianer Zheng,Li Wang,Ying Huang,Junkai Huang,Huan Du,Xiaowei Zheng,Wenbin Du,Zhiyang Dong,Yang Liu,Li Huang,Xin Dai
The rare biosphere harbors immense microbial diversity, yet most low-abundance taxa remain uncultured and functionally enigmatic. Here, we isolated strain D14 T from deep-sea water, and propose to classify it as a novel species, Metabolovarius oceani sp. nov., within the novel family Metabolovariaceae fam. nov. M. oceani represents the first cultivated member of the candidate family NORP267, a globally distributed but elusive alphaproteobacterial lineage known only from metagenome-assembled genomes. It possesses broad metabolic capabilities, including CO 2 fixation, polyhydroxyalkanoate biosynthesis, complete denitrification and thiosulfate oxidation, and is capable of aerobic growth under both heterotrophic and autotrophic conditions and of anaerobic autotrophic denitrification via thiosulfate oxidation. Despite its versatile metabolic repertoire and global distribution, Metabolovariaceae remains consistently low in abundance across diverse habitats. The isolation of M. oceani permits direct experimental insights into the evolutionary adaptations, physiological resilience, and potential ecosystem roles of rare but metabolically versatile microorganisms within the microbial dark matter.
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PubMed
高影响因子
Cell Reports Sustainability
·
2026
·
IF 7.5
Li Tang,Jing-Chun Feng,Rui Hou,Nuo Chen,Can-Rong Li,Si Zhang
Inputs of per- and polyfluoroalkyl substances (PFASs) threaten deep-sea cold seep ecosystems, yet their environmental behavior and risks remain poorly understood. We report a comprehensive investigation of 30 PFASs in seawater and sediment from South China Sea cold seeps. Emerging PFASs, notably 2,3,3,3-tetrafluoro-2-(1,1,2,2,3,3,3-heptafluoropropoxy) propanoic acid (hexafluoropropylene oxide dimer acid [HFPO-DA]) and sodium 1 H ,1 H ,2 H ,2 H -perfluoro-1-octanesulfonate (6:2 FTS), are widely detected. Seawater (0.75–3.52 ng/L) and sediment (0.45–2.55 ng/g dw) levels indicate moderate contamination, exceeding pristine open baselines but remaining below coastal impacts. Crucially, downward-decreasing sediment profiles are significantly disrupted by active methane seepage. Elevated fugacity fractions ( ff > 0.8) reveal a strong thermodynamic migration tendency driving secondary PFAS release into bottom waters via methane-induced “bubble irrigation.” ToxPi prioritization highlights pronounced matrix- and compound-specific vulnerabilities, with 6:2 FTS and perfluorobutanoic acid (PFBA) as primary hazard contributors. These findings identify cold seeps as overlooked hotspots for PFAS source-sink transformation, requiring integration into deep-sea chemical risk frameworks.
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DOI
高影响因子
FOOD CHEMISTRY
·
2018
·
IF 4.946
Nataliya A. Gavrilenko,Tatyana N. Volgina,Evgeniy V. Pugachev,Mikhail A. Gavrilenko
Polymethylmethacrylate matrix has been developed as an analytical device for visual and spectrophotometric determination of malachite green. Based on the studied effects of different pH levels, temperature, contact time and diverse ions, optimum analysis conditions have been established. For malachite green, the calibration graph was linear in the range of 0.5–30 mg·L −1 in the samples with the detection limit of 1 mg·kg −1 . The proposed simple method makes it possible to determine malachite green visually in the concentration range 8–30 mg·L −1 using a colour scale. The method has been implemented for determination of malachite green in various sea fish samples.
研究领域:
分析化学
·
环境科学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF NATURAL PRODUCTS
·
2022
·
IF 4.803
Jiaqi Wang,Taiwei Li,Pinmei Wang,Wanjing Ding,Jinzhong Xu
Twelve new tanzawaic acid derivatives, penitanzacids A−F (1–6), and G−J (9–12), and hatsusamides C−D (13–14), together with two revised structures [tanzawaic acids I−J (7–8)] and three known compounds (15–17) were isolated from the deep-sea-derived fungus Penicillium sp. KWF32. Their structures including absolute configurations were elucidated by spectroscopic data analysis, HRESIMS data, modified Mosher’s method, chemical degradation studies, ECD calculations, single crystal X-ray diffraction, and biogenic considerations in comparison with reported known analogues. Penitanzacids H–J (10–12) represent the first examples of this family with a C3 side chain and support the proposed biosynthetic pathway in which the side chain is connected to the decalin backbone. Hatsusamides C–D (13–14) have a hybrid skeleton formed by linking a tanzawaic acid and a diketopiperazine through an ester bond. Compounds 13 and 14 exhibit weak cytotoxicity against the A549 cell line.
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PubMed
高影响因子
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