JOURNAL OF FOOD COMPOSITION AND ANALYSIS
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2021
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IF 4.556
Wei Jia,Yinghuan Yang,Shuxing Liu,Lin Shi
Irradiation technology has been shown to be a possible preservation technology used to prolong the shelf life and provide microbial decontamination of spices. In this study, the molecular mechanisms of the irradiation-induced accumulation of polyphenols in star anise were explored using metabolomics combined with ultra-high-performance liquid chromatography quadrupole-Orbitrap (UHPLC-Q-Orbitrap) high-resolution mass spectrometry. Fifty-six star anise samples from different areas processed with 2–10 kGy doses of irradiation were compared. The effect of post irradiation storage times ranging from 0 to 70 days was also evaluated. A total of 161 metabolites with variable importance on projection greater than 1 were characterized, and significant differences in flavonoid content in star anise were observed after irradiation. Absolute quantification was used for the quantification of distinctive compounds, and the limit of quantitation of the components was 1.90–6.53 μg/kg. The flavonoid content was stable on the 28th day of storage. The average content of flavonoids increased by 2–9 times due to the breaking of glycoside bonds in star anise by irradiation. C 15 H 11 O 7 + m/z 303.13045 and C 3 H 3 O 2 + m/z 71.01276 were defined as the characteristic fragments of flavonoids according to the mechanism of fragmentation. Checking the extraction ion chromatogram (EIC) characteristic fragments allows straightforward screening of untargeted flavonoids.
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PROGRESS IN ORGANIC COATINGS
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2020
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IF 4.469
Pengying Wan,Nie Zhao,Fugang Qi,Biao Zhang,Hailong Xiong,Heng Yuan,Bin Liao,Xiaoping Ouyang
A novel PDA-BN@f-Al 2 O 3 nanohybrid was synthesized by depositing Al 2 O 3 nanoparticles modified with γ -Aminopropyltriethoxysilane (KH550) on the surface of hexagonal boron-nitride (h-BN) sheets covered with polydopamine (PDA). Then, PDA-BN@f-Al 2 O 3 hybrids was dispersed in epoxy resin to prepare composite coating samples. Many characterizations revealed that the functionalized Al 2 O 3 successfully deposited on the surface of PDA-BN platelets and PDA-BN@f-Al 2 O 3 hybrids showed good dispersibility in the epoxy resin, and the interfacial adhesion between hybrids and epoxy matrix was improved. Furthermore, the effects of Al 2 O 3 , h-BN and various mixtures of PDA-BN@f-Al 2 O 3 hybrids at a low weight fraction of 1 % on the corrosion resistance of epoxy coating were studied by electrochemical measurement and salt spray test. The potentiodynamic polarization test revealed that PDA-BN@f-Al 2 O 3 hybrids have a corrosion inhibitive performance. Moreover, the coating resistance of PDA-BN@f-Al 2 O 3 (3:1)/epoxy was enhanced by three orders of magnitude compared with neat epoxy after 5 d immersion. This study provides a promising application prospect for the development of superior metal protective organic coatings.
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SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
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2019
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IF 2.931
Dongwei Miao,Dongkui Liu,Yanbo Zeng,Guobao Zhou,Wei Xie,Yiwen Yang,Hailong Wang,Jian Zhang,Yunyun Zhai,Zulei Zhang,Lei Li
A novel fluorescent biosensor based on dabcyl [(E)-4-((4-(dimethylamino) phenyl) diazenyl)benzoic acid] -modified anti-Mb aptamer (D-AMA) and 6-FAM(6-carboxyfluorescein) -modified complementary short chain (F-CSC)for the specific and sensitive detection of Mb levels is presented in this study. In PBS buffer solution, D-AMA bound to F-CSC, and then dabcyl quenched the fluorescence of 6-FAM. After adding Mb into the system, D-AMA bound to Mb and separated from F-CSC. The fluorescence of 6-FAM was restored after it separated from dabcyl. The assay exhibited high specificity and sensitivity toward Mb, with a low limit of detection of 0.07 ng/mL (S/N = 3) and linear relationships of 0.1–5 ng/mL. It was further applied to detect Mb levels in spiked human blood sera samples.
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PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2018
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IF 6.735
Wenfeng Han,Jinchao Wang,Lulu Chen,Luteng Yang,Shucheng Wang,Miao Xi,Haodong Tang,Wucan Liu,Weiyu Song,Jianjun Zhang,Ying Li,Huazhang Liu
Trifluoromethane is one of the most potent and stable greenhouse gases with global warming potential of 14,800 times higher than CO 2 (100-year time horizon). At present, it is destroyed by incineration or plasma at temperatures above 1200 K. For the first time, this work report that CHF 3 can be reverted to HCFC-22 via the intermolecular Cl/F exchange reaction of CHF 3 with CHCl 3 over AlF 3 catalyst under moderate conditions. As CHF 3 is produced during the manufacture of HCFC-22 via the fluorination of CHCl 3 in liquid phase, no additional feedstock and products are involved for the treatment of CHF 3 in this proposed process. At 593 K and atmospheric pressure, CHF 3 conversion levels of about 18%–20% are achieved and no significant deactivation is observed following time on stream of 100 h. In addition, the catalytic reaction mechanism is proposed. According to the experiments and DFT calculation, the intermolecular Cl/F exchange reaction of CHF 3 with CHCl 3 is mainly initiated by the breakage of C Cl. The present work provides a potential resource utilization route for the treatment of CHF 3 and other hydrofluorocarbons (HFCs).
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2014
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IF 2.93
Shiyong Yu,Tao Zhang,Yanhong Xie,Qinghua Wang,Xuechuan Gao,Renfei Zhang,Yulong Zhang,Haiquan Su
In this paper, a series of iron-based Fischer–Tropsch catalysts were prepared with mesoporous titanium dioxide as catalyst carrier. And the F-T catalytic activities of iron supported on the mesoporous TiO 2 with different doping concentrations were also investigated in photo-thermal driven Fischer–Tropsch synthesis. Transmission Electron Microscopy (TEM), Scanning Electron Microscopy (SEM), Low temperature N 2 adsorption-desorption, X ray powder diffraction (XRD), Temperature Programmed Reduction (TPR) were used to characterize the catalysts, and the catalytic performance were also investigated for Photo-thermal driven Fischer–Tropsch synthesis under the condition of atmospheric pressure at the temperature of 220 °C, n (H 2 )/ n (CO) = 2:1 and GHSV = 1500 h −1 . It is shown that, for different doping concentration of iron, the conversion of CO, the selectivity of methane and the selectivity of C 2+ changes, resulting in the difference performance of Photo-thermal Fischer Tropsch synthesis reaction.
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ELECTROCHIMICA ACTA
·
2016
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IF 4.803
Pengfei Wang,Hui Liu,Yuxing Xu,Yunfa Chen,Jun Yang,Qiangqiang Tan
Reducing the particle size is a straightforward way to increase the specific surface area of ruthenium oxide, which usually translates to the high specific capacitance for a supercapacitor. Herein, we report a facile strategy to fabricate ultrafine ruthenium oxides supported on various carbon-based substrates (carbon powders, carbon nanotubes, or reduced graphene oxides) as excellent electrode materials for a supercapacitor. The novelty of this work lies in its synthetic approach, which involves an aqueous synthesis of ruthenium nanoclusters under the control of pH value, and an air oxidation-based conversion process. In particular, owing to their ultrafine particle size, the as-prepared carbon-, carbon nanotube-, or reduced graphene oxide-supported ruthenium oxides exhibit specific capacitance as high as 879.1 F g −1 , 966.8 F g −1 and 1099.6 F g −1 , respectively, for a supercapacitor at a current density of 0.5 A g −1 . The specific capacitance maintains 98.4% (for carbon supports), 98.0% (for carbon nanotube supports) and 98.4% (for reduced graphene oxide supports) at current density of 1 A g −1 with good cycling stability. The remarkable simplicity and environmental friendliness of this synthesis may provide a liable quantity production route to produce ruthenium oxides as highly efficient electrode materials for a supercapacitor.
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CATALYSIS LETTERS
·
2024
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IF 2.3
Sun Min,Chu Siyu,Guo Dongfang,Jiao Xinyu,Wang Haiyan,Wang Lingli,Li Zijiong,Jiang Liying
Rising energy demand has forced to look for new ways to convert energy. Graphene quantum dots (GQD) has received extensive attention in many fields due to their low toxicity, abundant active sites, sound water solubility and photoluminescence stability. Here, a fluorine-nitrogen co-doped GQD (C-GQD) is synthesized for efficient oxygen reduction reaction (ORR) catalysts. The incorporation of fluorine and nitrogen atoms changed the electronic structure of the carbon atom, resulting into synergistic enhancement of catalytic performance toward ORR. Electrochemical studies of the ORR showed that the initial potentials of C-GQD were positively shifted by 200 mV and 170 mV compared with those of GQD and N-GQD, respectively, and the half-wave potentials were positively shifted by 200 mV and 180 mV, which were comparable to that of 20% Pt/C. The CV curves underwent only slight fluctuations after 10,000 cycle tests. The obtained results provide important insights into the use of metal-free catalysts with GQDs as carriers as promising electrocatalysts for proton exchange membrane fuel cells with low cost and easy preparation procedures. Graphical Abstract
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Nanomaterials
·
2024
·Vol. 14
·期 7
·573
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IF 4.4
Zhou Wang,Yijie Lian,Xinde Zhu,Qi Wang
The application of transition metal hydroxides has long been plagued by its poor conductivity and stability as well as severe aggregation tendency. In this paper, a novel hierarchical core–shell architecture, using an F-doped Co(OH)2nanorod array (Co(OH)F) as the core and Mn/Ni co-doped Co(OH)2nanosheets (NiCoMn-LDH) as the shell, was constructed via an MOF-mediated in situ generation method. The obtained Co(OH)F@ NiCoMn-LDH composites exhibited excellent supercapacitive performance with large specific capacitance as well as improved rate capability and long-term stability. The effect of the Ni/Mn ratio on the supercapacitive performance and energy storage kinetics was systematically investigated and the related mechanism was revealed.
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FOOD CHEMISTRY
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2018
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IF 4.946
Nan Wang,Huijuan Chai,Xuelin Dong,Qian Zhou,Lihua Zhu
Iron(III) ethylenediaminetetraacetate (Fe(III)EDTA) is widely used in iron fortification for reducing iron deficiency, and its determination is urgently needed. The present work developed a fluorescent method to straightforwardly determine Fe(III)EDTA by using photoluminescent carbon dots (C-dots) with the aid of F − ions as the masking agent of free Fe 3+ ions. In the presence of F − ions, only Fe(III)EDTA selectively quenched the photoluminescence of C-dots, and both Fe 3+ and Fe 2+ as well as other carboxylic acids have no effect on the emission of C-dots. The sensing mechanism was attributed to the ligand-tailored electron transfer process from C-dots to Fe 3+ . Under optimum conditions, this method showed a linear calibration plot over the Fe(III)EDTA range of 1.0–200 μmol L −1 and a detection limit of 0.4 μmol L −1 . The proposed method was successfully applied to determine Fe(III)EDTA in real samples with acceptable recoveries of spikes (95%−110%) and repeatability (RSD, 4.2%−9.5%).
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PubMed
高影响因子
CELLULOSE
·
2024
·Vol. 31
·期 7
·4177-4188
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IF 4.9
Shi Lisheng,Chen Junjun,Hu Zihao,Xiao Yuying,Li Hailong
Fluorescent fiber is widely used for anti-counterfeiting purposes due to its unique security features and ease of identification worldwide. In this study, polychromatic fluorescent fiber using bleached softwood fiber (F) combined with AgInZnS quantum dots (AIZS QDs) was successfully prepared through a one-step hydrothermal method. The photoluminescence (PL) of AIZS@F could be adjusted from green to red by varying the molar ratio of Ag + /Zn 2+ /S 2− /In 3+ . Increasing the molar ratio of Ag + /In 3+ led to a redshift in peak emission wavelength, increasing Zn 2+ /In 3+ or S 2− /In 3+ resulted in a blueshift in PL wavelength. Furthermore, AIZS QDs were synthesized both on the surface and inside of the fluorescent fiber, and the mild hydrothermal condition did not cause significant damage to the structure of the fiber. Additionally, due to the inherent microporous structure of natural plant fiber, AIZS QDs could still be steadily loaded into the fiber after intense mechanical stirring. AIZS@F exhibited excellent fluorescent performance although the total loading amount was merely 0.457%. This stable, polychromatic, hydrophilic and degradable fluorescent fiber has great potential for anti-counterfeiting applications.
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JOURNAL OF DRUG DELIVERY SCIENCE AND TECHNOLOGY
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2025
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IF 4.9
Guanlin Zhou,Chao Wang,Heng Li,Nenad Filipovic,Chengwei Wu,Wei Zhang
Magnetic hyperthermia (MH) relies on the heat generated by magnetic nanoparticles (MNPs) under an alternating magnetic field to kill tumor cells. However, the thermal barrier of the cell membrane hinders the transfer of heat generated by MNPs into cells, thereby limiting their therapeutic efficacy. Enhancing MNPs endocytosis is a promising way to overcome this limitation. The modification of physicochemical properties of MNPs and the pretreatment with electrical field can enhance the endocytosis. As an alternative, here, the effect of alternating magnetic field (AMF) pretreatment was explored. The AMF stimulation increases nanoparticle uptake by 1.62-fold and improves magnetic hyperthermia efficacy by 33 %. AMF stimulation induces F-actin depolymerization, leading to a reduction in cellular elastic modulus. This decreases the elastic deformation energy required for endocytosis, thereby facilitating the formation of membrane ruffles essential for macropinocytosis.
研究领域:
生物医学工程
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纳米医学
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癌症治疗
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细胞生物学
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生物物理学
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
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IF 9
Chengzhong Ding,Qiang Gao,Xiaoying Chen
To achieve both the sustainable valorization of antibiotic fermentation residues (AFR) and high-efficiency removal of organic pollutants with low-consumption, this study proposed the harmless transformation of AFR into a novel biochar catalyst for water purification by activation of peroxymonosulfate (PMS). Herein, we introduced a novel strategy by converting untreated AFR into a Fenton-like catalyst (AFR/BC) through the controlled coordination of intrinsic Al species with boron and oxygen via an in-situ pyrolysis-solvent method. During the AFR resourcelization process, electron-rich and electron-deficient microregions were generated through directional electron transfer facilitated by B-O-Al interactions, as confirmed by characterization techniques and density functional theory (DFT) calculations. As a result, upon activation by 0.4 mM PMS, the AFR/BC/PMS system achieved over 90 % bisphenol F (BPF) removal after 80 h of continuous treatment, demonstrating sustained purification efficacy in BPF-containing wastewater. Moreover, the system exhibited remarkable resistance to interference from a broad pH range, inorganic anions, and organic compounds. Moreover, the primary degradation pathways of BPF in this system involved both a free radical pathway (SO 4 -, ·OH and O 2 -) and a non-radical pathway ( 1 O 2 ). This study is expected to advance the sustainable utilization of AFR and contribute to the long-term development of water purification technology.
研究领域:
环境科学
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材料科学
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催化化学
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危险品化学品经营许可证（带存储）