INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
·
2020
·Vol. 21
·期 5
·1637
·
IF 4.556
Shiyuan Fang,Weiqiang Qiu,Jun Mei,Jing Xie
Carvacrol is a natural compound known to be a highly effective antibacterial; however, it is a hydrophobic molecule, which is a limitation to its use within food packaging. Flaxseed gum (FG) films containing different contents of carvacrol (C) were produced by a film-casting method with sonication. The effects of sonication power and time on the properties of the FG-C films were investigated by measuring the film thickness, mechanical properties, contact angle, opacity, water vapor permeability (WVP), water sorption isotherm, Fourier transform infrared spectroscopy(FTIR), differential scanning calorimetry (DSC), antibacterial and antioxidant activities, and microstructure. The results showed that sonication power and time had significant effects on mechanical and barrier properties, film opacity, and degradability (p< 0.05). The tensile strength (TS) and elongation at break (EB) values exhibited an obvious improvement after sonication, and FG-0.5C-6030 had the lowest TS (33.40 MPa) and EB (4.46%) values. FG-C films formed a denser structure and the contact angle was improved as a result of sonication, which improved the integration of carvacrol into the FG matrix. In terms of microstructure, sonication resulted in a homogeneous and continuous crosssection of FG-C films, and regular surface and cross-sectional images were obtained through the highest acoustic intensity and longest time treatment. The FG films incorporated with carvacrol displayed antibacterial properties againstStaphylococcus aureus,Vibrio parahaemolyticus,Shewanella putrefaciens, andPseudomonas fluorescens, as well as increased antioxidant properties, and sonication was proven to enhance both of them.Keywords:sonication;active films;flaxseed gum;antibacterial agent;carvacrol
研究领域:
食品科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Nano Materials
·
2022
·
IF 6.14
Yu Niu,Lingling Xie,Tao Zhou,Jing Xu,Youchi Ding,Qing Han,Xuejing Qiu,Yongmei Xiao,Yongxia Miao,Limin Zhu,Xiaoyu Cao
In this work, nano LiV3O8(LVO) was synthesized using the rheological phase reaction method. Subsequently, after ultrasonic and heat treatment at 300 °C, the nano LVO Ut-300 was obtained and performed as cathode material in Na-ion batteries for the first time. Brunauer–Emmett–Teller analysis indicated that the specific area increased after ultrasonic treatment, which was conducive to the shuttling of sodium ions and enhancement of the electrochemical performance. The X-ray diffraction patterns displayed stable nano LVO Ut-300 material structure and larger interlayer spacing, and SEM and TEM performed more regular morphology. After the electrochemical tests, the nano LVO Ut-300 cathode delivered a high discharge capacity of 153.8 mA h g–1 in the voltage range of 1.8–4.0 V at 30 mA g–1. Meanwhile, the storage mechanism of Na+ was further explored by XPS, and kinetics characteristics of LVO/Na cells were revealed by pseudocapacitance analysis and galvanostatic intermittent titration technique (GITT) tests. In summary, nano LVO was processed by the ultrasonic method followed by subsequent heat treatment, which could effectively improve the electrochemical behavior of LiV3O8 as cathode materials of secondary Na-ion batteries.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
MINERALS ENGINEERING
·
2025
·
IF 5
Lan Qiu,Huanyu Zhu,Zhongjian Liu,Hao Yi,Feifei Jia,Shaoxian Song
Picromerite is an important material for producing potash fertilizer. However, picromerite exhibited a poor recovery in the practical flotation process. In this study, we propose a strategy to improve the recovery by surface roughness modification with ultrasonic treatment. SEM images show that the surface morphology became rougher after ultrasonic treatment. Flotation tests demonstrate that the recovery of picromerite increased from the original 79.85% to 90.24% after ultrasonic treatment for 60 min. The mechanism of enhanced flotation was further analyzed with the help of adhesion-desorption force, surface wettability, collector adsorption, and XPS analysis, which indicated that ultrasonic treatment makes the surface more hydrophobic and exposed additional magnesium adsorption sites, thereby facilitating more effective reagent adsorption on the picromerite surface. The method of surface roughness modification by ultrasonic treatment proposed in this work provides a novel way to improve the flotation efficiency, which holds significant potential for enhancing the recovery of other similar soluble or semi-soluble minerals.
✓ 已验证
产品关联
DOI
高影响因子
CARBON
·
2024
·
IF 10.5
Jihong Wang,Wenhao Liu,Qiubo Pan,Lei Zhang,Junchao Ren,Haiping Fang
ABSTRACT Regulating the charge-related properties in materials is highly valuable in the field of electronic devices. Charge transfer doping received significant attention as an efficient method of modulation. Graphene oxide (GO) is often used for regulation due to its abundance of oxygen-containing groups. However, the conventional operations to perform charge transfer doping for GO are complex, expensive and environmentally unfriendly. Here, we propose a charge transfer doping strategy by simply mixing GO suspension with 5 mg/ml 2,3,5,6-tetrafluoro-7,7,8,8-tetracyano-quinodimethane (F 4 TCNQ), together with ultrasonic treatment. Notably, the F 4 TCNQ-GO flexible photodetector exhibits outstanding responsivity ( R ) of up to 1.57 × 10 3 A/W in the 650 nm regime, surpassing most of the GO/graphene-based photodetectors reported in the past decade. Moreover, the photodetector successfully realizes in-sensor computing for complex pattern imaging, enabling clear and efficient multi-directional edge extraction. Experiments employing X-ray photoelectron spectra (XPS), X-ray diffraction spectra (XRD), Raman spectra, Ultraviolet-visible (UV-vis) spectra and scanning electron microscopy (SEM) reveal the stable non-covalent binding between GO and F 4 TCNQ through π-π interactions, as well as the electron transfer from GO to the F 4 TCNQ molecule, resulting in the formation of electron accumulation and depletion layers on the F 4 TCNQ molecule and GO, respectively. This finding holds great potential for regulating the electronic properties of a wide range of π-electron-rich two-dimensional materials in the fields of energy, biomedicine, environmental technology, and materials science.
研究领域:
材料科学
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电子器件
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能源技术
·
生物医学
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环境科技
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Sciences
·
2019
·
IF 3.556
Haotian Jiang,Yun Xie,Yanli Ge,Hong He,Yongchun Liu
The dithiothreitol (DTT) assay is the most commonly used method to quantify the oxidative potential of fine particles. However, the reported DTT decay rates of carbon black (CB) materials vary greatly among different researchers. This might have resulted from either the intrinsic toxicity of CB or the unsuitability of the DTT assay protocol for CB particles. In the current study, the protocol of the DTT assay for CB materials has been carefully evaluated. It was found that the dispersion degree of CB particles in water has a great influence on the DTT decay rate of CB materials. For CB particles (special black 4A (SB4A) and Printex U) and single-walled carbon nanotube tube (SWCNT), the DTT decay rate after sonication for 10 min became 4.2, 4.6 and 1.7 times higher than that without sonication. The rate continued to grow as a function of ultrasound time up to 30 min of sonication. Although the concentration of soluble transition metals and surface oxygen-containing species such as carbonyls increased slightly with sonication, they had no significant effects on the measured DTT activity, while the increase in the dispersion degree of aggregates was found to play a vital role in the observed enhancement of the DTT decay rates for different CB materials. Based on our results, 30 min of sonication is recommended for sample dispersion when measuring the DTT decay rate of CB materials.
研究领域:
环境科学
·
毒理学
✓ 已验证
DOI
PubMed
高影响因子
Nanoscale Research Letters
·
2022
·Vol. 17
·期 1
·1-11
·
IF 5.418
Jiang Xingwang,Cheng Jie,Liu Ping,Gao Qingguo,Liu Liming
High-quality four-layer molybdenum disulfide (MoS 2 ) nanosheets with lateral dimension of about 11 µm were prepared by ultrasonic treatment of MoS 2 powder with assistance of 1-methyl-2-pyrrolidone (NMP) solvent. The optimal preparation conditions for the preparation of MoS 2 nanosheets were investigated from the aspects of ultrasonic processing time, ultrasonic power and amount ratio of MoS 2 powder and NMP solvent. At the same time, the MoS 2 nanosheets were employed as anode buffer layer in organic light-emitting diode (OLED) with copper nanowire (CuNW) film being anode. MoS 2 nanosheets can reduce roughness of CuNW film, protect CuNW film from oxidation and improve work function of CuNW film. Experiments show that MoS 2 nanosheets can significantly improve the current density and brightness of the OLED with CuNW film being anode. The maximum brightness of the OLED with MoS 2 anode buffer layer is 2.15 times that of the OLED without MoS 2 anode buffer layer. The current density of the OLED with MoS 2 anode buffer layer is also obviously increased compared with the OLED without MoS 2 anode buffer layer.
研究领域:
材料科学
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电子工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2025
·
IF 9.8
Junli Feng,Ningsi Xu,Yiran Jin,Yu Zhang,Fei Xu,Fang Yao,Zejun Wang,Liting Ji,Qing Shen
Despite the increasing global salmon production and the recognition of by-product value, nutrient-rich salmon heads are not fully utilized for direct consumption. This study explored the influence of homogenization combined with ultrasonic treatment (HUT) on micro-nano particle (MNPs) formation, nutrient composition, flavor profile, and overall quality of salmon head soup. Results showed that HUT effectively enhanced nutrient content. Meanwhile, the size of MNPs decreased from 1967.67 nm to 674.17 nm after HUT treatment, and the soup samples exhibited improved emulsification and enhanced whiteness with a more uniform texture. HUT also enhanced the soup's antioxidant activity. Moreover, HUT promoted the generation of volatile flavor compounds, increased the content of FAAs and 5′-nucleotides. Correlation analysis revealed a significant relationship between MNPs particle size and soup quality and flavor. Overall, HUT can enhance the nutritional value, flavor, and overall quality of salmon head soup.
研究领域:
食品科学
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生物技术
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营养学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2021
·
IF 6.953
Jumin Hou,Xiaoxia Yan
The ultrasonic treatment could decrease the particles size of chitosan-SiO 2 particles. The EDS of samples with ultrasonic treatment for 0 min and 10 min indicated that the SiO 2 was present in prepared chitosan-SiO 2 particles. When the ultrasonic time reached 10 min, the chitosan-SiO 2 nanoparticles formed and the mean size was 506.7 ± 3.42 nm and the Zeta potential of the chitosan-SiO 2 nanoparticles was greater than 30 mV, showing the suspension was a stable dispersed liquid. The chitosan-SiO 2 nanoparticles were used as reinforcement in thermoplastic starch films to further verify their performance in enhanced films. The water contact angle of thermoplastic starch film reinforced with chitosan-SiO 2 nanoparticles was 44.13 ± 5.02° and had a good mechanical property with tensile strength of 8.91 ± 0.49 MPa. This study indicates that chitosan-SiO 2 nanoparticles could be used as a reinforcement to prepare thermoplastic starch films and promote the application of chitosan nanoparticles in nanocomposite films.
研究领域:
材料科学
·
食品科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CARBOHYDRATE POLYMERS
·
2017
·
IF 4.811
Qian Wang,Xiaoxia Yan,Yanjiao Chang,Lili Ren,Jiang Zhou
Chitin nanofibers were prepared from commercially available chitin powder via esterification modification and subsequent ultrasound treatment. The obtained chitin nanofibers were characterized using dynamic light scattering (DLS), scanning electron microscopy (SEM), Fourier transform infrared (FTIR), 13 C CP-MAS (cross-polarization under magic-angle spinning) solid state nuclear magnetic resonance (NMR), elemental analysis, and X-ray diffraction (XRD). Results showed that the esterification of chitin with maleic anhydride significantly improved the ultrasound disintegration of chitin fibrils into nanofibers. With increasing power and time, the ultrasound treatment yielded smaller chitin nanofibers with narrower size distribution, and the diameter of the chitin nanofibers could reach ∼15 nm. The effect of the ultrasound treatment on degree of acetylation and degree of substitution of the chitin nanofibers was negligible. However, crystallinity of the chitin nanofibers increased with increase in power and time of the ultrasound treatment.
研究领域:
材料科学
·
生物化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ULTRASONICS SONOCHEMISTRY
·
2023
·
IF 8.4
Wei He,Menglin Han,Ying Bu,Wenhui Zhu,Jianrong Li,Xuepeng Li
To study the physicochemical properties of micro-nanoparticles (MNPs) in thermoultrasonic treated fishbone soup, it was subjected to ultra-filtration with a 100 kDa ultrafiltration membrane to obtain large MNPs (LMNPs) and small MNPs (SMNPs). LMNPs and SMNPs were treated with force-breakers, and the interactions of the MNPs with five characteristic volatile compounds were investigated. LMNPs covered most proteins (222.66 mg/mL) and fatty acids (363.76 mg/g), while SMNPs was mostly soluble small molecules with taste substances like total free amino acids (85.26 mg/g), organic acids (2.55 mg/mL), and 5′-nucleotides (169.17 mg/100 mL). The stability of LMNPs is significantly higher than raw bone soup, and SMNPs can exist stably in the solution. Correlation analysis between flavor substance content and flavor suggested that the overall flavor profile of halibut bone soup was closely related to the content changes of 72 significant influence variables. The binding of LMNPs to characteristic flavor compounds was largely affected by hydrophobic interactions, hydrogen bonds, and ionic effects. While the binding of SMNPs to characteristic flavor compounds was largely determined by hydrophobic interaction and hydrogen bonding. This study explores the characteristics of MNPs and provides the possibility to clarify the interaction mechanism between MNPs and flavor.
研究领域:
食品科学
·
化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2019
·Vol. 30
·期 7
·6650-6659
·
IF 2.195
Li Jinhuan,Ren Jiahui,Xu Yanfang,Ji Huanmin,Zou Xuexue
In situ polymerization of aniline was carried out within graphene hydrogels with the ultrasonic treatment, and thus the polyaniline (PANI) was loaded and the three-dimensional (3D) graphene/PANI aerogel composite (GPA) was facilely obtained after freeze drying. The investigation shows that the polyaniline as twisted nano-rods was formed and scattered in the interconnected porous 3D graphene. When a supercapacitor electrode was fabricated with the composite GPA, the specific capacitance at a current density of 1 A g −1 can reach as high as 618 F g −1 . The capacity retains 89% of the initial value in constant current charge–discharge mode (at the current density of 10 A g −1 ) after 2000 cycles. The improved electrochemical properties were confirmed to be resulted from the unique network morphology, enhanced conductivity and the synergy effect between graphene and polyaniline. The composite GPA is self-supporting and can be directly used as the electrode material without adding binders. This contribution provides a simple method to prepare the electrode material with enhanced electrochemical properties based on graphene. The GPA composite shows great potential for application in supercapacitors.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Communications
·
2023
·
IF 3.8
Lvheng Kou,Zhiqing Hu,Li Zhang,Yanjiao Chang,Peizhuang Wang,Jiaqi Shang,Jiang Zhou
Chitin nanofibers (ChNFs) are emerging as a very attractive material due to their biocompatibility, renewability, and excellent mechanical properties. ChNFs have broad applications in various fields. In this paper, ChNFs were prepared from commercially available chitin power through a dual modification of esterification with maleic anhydride followed partial deacetylation and subsequent ultrasonic treatment. Meanwhile, potential application of the ChNFs in antireflective coatings was explored. It was found that, as the deacetylation reaction time increased, the ChNFs became finer and more uniform. The ChNFs were positively charged under acidic conditions and negatively charged under basic conditions. At pH of 3.5, the ChNFs were dispersed well in water and the ChNF suspension showed excellent stability. The ChNF coatings fabricated by casting the ChNF suspensions with pH of 3.5 on glass substrate possessed antireflective capacity and yielded a 3 % transmission gain in the wavelength range of 390–800 nm compared to the uncoated glass.
研究领域:
材料科学
·
生物技术
✓ 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）