JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2018
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IF 5.091
Siyuan Dong,Yingqi Jia,Xiaozhi Xu,Jianeng Luo,Jingbin Han,Xiaoli Sun
Poly(ethylene terephthalate) (PET) generally suffers from low crystallization rate and long molding duration, which as a result limit its application as engineering plastics. To overcome these drawbacks, series of PET/layered double hydroxide (LDH) nanocomposites were prepared by a solution blending process. The effect of metal composition (MgAl and CaAl) and organo-modification (stearic acid intercalated) for LDH fillers on the crystallization behavior of the nanocomposites was investigated. It was revealed that, compared with PET/CaAl-LDH, the PET/MgAl-LDH nanocomposite exhibits a higher crystallization temperature and faster crystallization rate, which is associated with the superior nucleation ability of MgAl-LDH. The nucleation mechanism of PET induced by LDHs was explored by means of Avrami equation and theory of Hoffman-Lauritzen, pointing out that the incorporation of LDHs reduce the free energy of nucleation and the fold surface free energy of PET. In order to improve the compatibility between LDH and PET, stearic acid (SA) intercalated MgAl-LDH was prepared and filled into PET matrix. The resultant PET/MgAl-LDH-SA shows a further enhanced crystallization temperature and accelerated crystallization rate, in comparison with PET/MgAl-LDH nanocomposites. In addition, the thermal stability, gas barrier and mechanical properties of PET/LDH composites were improved upon incorporation of LDH fillers.
研究领域:
高分子科学
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材料化学
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纳米复合材料
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结晶动力学
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聚合物物理
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功能材料
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工程塑料
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DOI
高影响因子
INTERNATIONAL DAIRY JOURNAL
·
2019
·
IF 2.735
Haixia Wang,Jitao Yang,Min Yang,Wei Ji
Maillard reaction products (MRPs) were prepared by reacting both Yak and Holstein casein with different ratios of glucose to casein from 0:1 to 2.5:1. The results showed that the content of intermediate products and browning intensity of the Yak casein-glucose system increased with increasing concentrations of glucose, but were lower than for the Holstein system at the same ratio. With glycosylation, the reducing power and the 2,2-diphenyl-1-picrylhydrazyl radical scavenging activity of both Yak and Holstein caseins were enhanced. With increased glucose content, the reducing power of Yak MRPs increased at the same concentration. The metal chelating activity of Holstein MRPs decreased or was eliminated in the ratio range of 0.5:1 to 2.0:1 g glucose g −1 casein, while that of Yak MRPs were reduced in general. Improvement of the inhibitory activity for Yak casein was lower than that of Holstein casein after glycosylation by glucose.
研究领域:
食品科学
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化学
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生物化学
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高影响因子
POLYMER TESTING
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2022
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IF 4.931
Yang-he Mo,Hui Wang,Shao-hua Jin,Ke-lin Peng,Zi-ming Yang,Pu-wang Li,Yu Chen
Fast curing hydrogels are highly valuable in the skin care industry. Multi-arm polyethylene glycol (PEG) is a commonly used crosslinking agent for the preparation of fast curing hydrogels. However, the hydrogel preparation using multi-arm PEG crosslinking agents usually requires the end group modifications of reactants, which makes the preparation process complicated and produces hydrogels with low curing rates. In the present study, a fast in situ curing hydrogel, 4-arm-PEG-succinimidyl carbonate/carboxymethyl chitosan (PEG-SC/CMCS), was prepared using 4-arm-PEG-SC as the crosslinking agent and carboxymethyl chitosan (CMCS), a derivative of natural polysaccharide with excellent comprehensive properties, as the framework without any end groups modified. The structure and properties of the prepared hydrogel were characterized by FTIR, XRD, SEM, rheology and swelling kinetics. The effects of reaction conditions on the structure and properties of hydrogel were investigated. The PEG-SC/CMCS hydrogel exhibited pH-sensitive swelling behaviors. Its application potential in skin care products is demonstrated with its excellent sustained-release performance of Vitamin C, a model drug for skin treatment, and high adsorption capacity of heavy metal ions that are easily deposited on skin surface. Our work has provided a new strategy for building multifunctional gel materials for skin care and offered a PEG-SC/CMCS hydrogel with great application potentials.
研究领域:
生物材料
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高分子化学
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药剂学
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皮肤科学
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组织工程
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药物递送系统
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环境毒理学
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DOI
高影响因子
npj Flexible Electronics
·
2026
·
IF 15.4
Kan Xinyuan,Fan Qian,Guo Wenlan,Sun Chen,Wang Yan,Duan Xuexin,Xue Qiannan
Ocular blood oxygen saturation is critical for detecting vision-threatening and systemic diseases. Existing wearable oxygen sensors are unsuitable for ocular use, and current ocular SpO₂ measurements rely on bulky equipment. This work introduces a flexible plasmonic nano-confinement (PNC) nanowire photodetector, based on a PNC nanowire array consisting of highly aligned and ordered PEDOT:PSS nanowires with embedded gold nanoparticles, for high-sensitivity oxygen saturation sensing. The PNC nanowire array acts as an anode interfacial modification layer, where nanowire-geometry-induced confinement and localized surface plasmon resonance synergistically lower the hole-extraction barrier, suppress interfacial recombination, and enhance photoconversion efficiency. Its flexible and transparent design, combined with a compact backend circuit using wavelet-threshold denoising, enables integration into a smart contact lens for accurate and stable non-invasive ocular oxygen monitoring. In vivo experiments demonstrate that this smart contact lens could provide a simple, non-invasive platform for continuous ocular SpO₂ monitoring, with potential relevance to systemic oxygen-status assessment.
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ChemCatChem
·
2026
·Vol. 18
·期 16
·e71036
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IF 4.1
Xiang Gao,Longfei Hong,Yuting Jiang,Yixuan Li,Lian-Hua Xu,Qingyu Liu,Huiyan Zhang,Sheng Chu
Polyolefin plastics, such as polyethylene (PE), possess chemically inert and nonpolar C–C backbones, making them difficult to recycle and causing persistent environmental pollution. The lack of green and highly selective upcycling methods has led to severe environmental concerns and resource waste. Photoelectrocatalysis utilizes high-energy photogenerated charge carriers to directionally upgrade plastic-derived small molecules into value-added chemicals. However, current photoelectrocatalytic technologies still face challenges in processing structurally inert bulk polymer plastics. In this study, we report a hydrothermal-photoelectrocatalytic tandem strategy to realize the upcycling of PE and other polyolefin plastics. The acetic acid product obtained from hydrothermal treatment are further converted into ethanol over an Au nanoparticle‑decorated GaN/Si (Au/GaN/Si) photocathode, achieving an optimal performance of a Faradaic efficiency of 57.6%. This tandem strategy also demonstrates excellent generality in the conversion of polypropylene (PP) and polyvinyl chloride (PVC), providing a green route for the upcycling of polyolefin plastics. Graphical Hydrothermal-photoelectrocatalytic tandem upcycling enables the conversion of chemically inert polyolefin plastics into value-added ethanol. The Au/GaN/Si photocathode achieves a Faradaic efficiency of 57.6% for ethanol production, while demonstrating broad applicability to PE, PP, and PVC plastics.
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高影响因子
Cell Communication and Signaling
·
2026
·
IF 11.6
Diao Jiayong,He Qixuan,Liu Quanzhen,Liu Yuxuan,Chen Simiao,Zhang Yuzhe,Gui Houda,Chen Jingyi,wu Dongni,Pang Xinyu,Zhang Qingyue,Wang Ya-nan,Zhang Dongjiao
Background Mitochondria, as crucial organelles in eukaryotic cells, are deeply involved in cellular energy metabolism and biogenesis. Currently, mitochondria have been found to transfer between cells and regulate a range of cellular functions and research has found that mitochondrial transfer has been shown to play an important role in regulating bone homeostasis. Methods Laser confocal imaging was used to confirm the occurrence of mitochondrial transfer between cells. JC-1 staining explains the state of free mitochondria in receptor cells. In order to reveal the relationship between the state and function of free mitochondria, osteogenic induction, Western blotting, flow cytometry, and in vivo experiments were conducted. RNA seq is used to analyze changes in cells. Different inhibitors were used to verify the specific mechanism of action of free mitochondrial transfer. Results Free mitochondrial transfer can improve the function of receptor cells through lysosomal pathway. Free mitochondria are degraded by cathepsin H (Ctsh) in lysosomes and release a large amount of cysteine after entering the receptor cells. In this process, the existence of membrane potential of free mitochondria is not critical. Cysteine, as the most important raw material for glutathione synthesis, can enhance the number and function of mitochondria in receptor cells. Conclusion Our study demonstrates that free mitochondrial transfer promotes bone regeneration by increasing cysteine supply, and provides innovative insights for understanding mitochondrial transfer.
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DOI
PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2026
·
IF 8.3
Yunli Peng,Guoquan Wang,Guifeng Li,Yuan Gong,Xi Yang,Xiaotian Tan,Tao Zhu,Chaoyang Gong
Apoptosis detection is significant for understanding fundamental biological processes and is closely associated with numerous diseases, including cancer, cardiovascular disorders, and neurodegenerative conditions. However, limited by the intrinsic complexity of physiological environments, achieving highly sensitive detection of apoptotic signals at the single-molecule level remains a major challenge. Here, we propose a label-free single-molecule apoptosis assay based on fiber-optic interferometric imaging. The interference pattern generated by scattered light on the microfiber surface was utilized to resolve localized phase changes, enabling single-particle and single-molecule sensitivity. We found that the dynamic evolution of the interference patterns correlates with the physical heterogeneity among different molecular species, including the surface charge and molecular weight of individual molecules. We achieved single-molecule detection of small proteins down to 5.8 kDa, demonstrating the broad applicability of our method across a wide range of clinically relevant proteins and nucleic acids. After functionalizing the fiber surface with antibodies, the interference patterns exhibited excellent specificity toward the antigen molecules. The dynamic interference pattern was further employed to perform an apoptosis assay at the single-molecule level. Our method enables label-free quantification of biomarkers in complex physiological environments with ultrahigh sensitivity, opening new avenues for fundamental studies of cell-death pathways and early disease diagnosis.
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FOOD CHEMISTRY
·
2022
·
IF 9.231
Rui Zhou,Dong-Jie Cui,Qi Zhao,Kai-Kai Liu,Wen-Bo Zhao,Qian Liu,Ruo-Nan Ma,Zhen Jiao,Lin Dong,Chong-Xin Shan
The microbial spoilage of soybeans during soaking process severely deteriorates the quality of soybean products and threatens human health. Herein, water-soluble aminated zinc oxide nanoparticles (ZnO NPs) were developed to effectively control the microbial spoilage in soybeans during soaking. ZnO NPs achieved significant inactivation of three dominant spoilage bacteria ( bacillus cereus , bacillus megaterium and enterococcus faecium ) isolated from the deteriorated soybeans, which could adhere to the bacterial surface and damage the cell wall/membrane, but also generate large amounts of reactive oxygen species (ROS). Compared to two commercial ZnO, water-soluble ZnO exhibited superior antibacterial properties due to producing more ROS and bacteria-adhered ability. After ZnO NPs treatment, the content of the residual Zn (51.1 mg/kg) in soybeans was the safety standards of Zn element in soybeans products for human). Therefore, the water-soluble ZnO NPs showed great potentials as efficient and safe antimicrobial agents for soybeans preservation during soaking process.
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DOI
PubMed
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
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2022
·
IF 6.633
Pengcheng Li,Shujuan Dai,Xiaoan Li,Wenhan Sun,Shujie Liu
The leaching rates for gold in the roasting oxidation pretreatment-cyanidation gold leaching process are generally low. An adsorption experiment for quartz baking slag (roasting time of 3 h, roasting temperature of 650℃) and gold cyanide solution was carried out under different stirring time conditions. It is found that after high temperature activation of the quartz surface, gold cyanide can be adsorbed. When the stirring time reaches 50 min, the adsorption rate is 6.08%, and the unit adsorption amount is 0.05 mg·g −1 . The EDS spectrum clearly shows that the Au element is distributed among Si and O, and 0.02% Au is adsorbed on the surface of the quartz baking slag. To further prove the adsorption mechanism for the gold cyanide solution and quartz slag, infrared spectroscopy (IR) and X-ray photoelectron spectroscopy (XPS) were used to characterize the surface of quartz slags. Infrared spectroscopy analysis shows that new peaks emerge at 1429 cm −1 , 1878 cm −1 , and 1996 cm −1 after the elution experiment, and the characteristic peaks for inorganic cyanide are observed at 1878 cm −1 and 1996 cm −1 . This shows that after high-temperature activation of the quartz baking slag, chemical adsorption of gold cyanide occurs. The results obtained from X-ray photoelectron spectroscopy (XPS) show that during the adsorption process, Au-Si is adsorbed together, and Au shows a valence of + 1, which indicates that Au(CN) 2− ions are adsorbed onto the quartz activated at high temperature. Density functional theory (DFT) was used to determine the adsorption mechanism for Au(CN) 2− ions and different sites on the surface of quartz (1 0 1) before and after high-temperature activation (three Au-O, Au-Si, and N-Si adsorption sites). During the high-temperature activation process, the Au-O bonds and interactions on the surface of gold cyanide and quartz gradually transform into Au-Si bonds and interactions, and the N-Si bonds are also enhanced. This shows that the adsorption of gold cyanide onto quartz baking slag is enhanced after high-temperature activation. The simulation calculation result is consistent with the experimental results.
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BIOMEDICAL CHROMATOGRAPHY
·
2021
·Vol. 36
·期 1
·e5239
·
IF 1.902
Xiao-fang Ma,Qi Zhao,Yan Cheng,Dong-Mei Yan,Wei-Feng Zhu,Fei Li
Coumarins are a group of natural compounds commonly found in the families of Rutaceae and Umbelliferae. 7-Isopentenyloxycoumarin (ISC), auraptene (AUR), and umbelliprenin (UM) belong to prenyloxycoumarins (PYCs), which link isopentenyl, geranyl, and farnesyl group at C7 position, respectively. The substituent of 7-ethoxycoumarin (ETC) is the ethyl group. In this study, UPLC–ESI–QTOF–MS (ultra-performance liquid chromatography–electrospray ionization–quadrupole time of flight–MS)-based metabolomics was used to evaluate the in vivo and in vitro metabolism of PYCs. Results showed that ETC produced 10 known metabolites, and ISC was transformed into 17 metabolites in vivo and in vitro , which were undescribed compounds. A total of 35 AUR metabolites, including 34 undescribed metabolites were identified, and 21 metabolites were reported for the first time in UM. The results indicated that hydroxylation and N -acetylcysteine conjugation were the common metabolic reactions for PYCs. The metabolic rates of ETC, ISC, AUR and UM were 26%, 36%, 81%, and 38%, respectively, in human liver microsome, while they were 24%, 40%, 80%, and 37%, respectively, in mouse liver microsomes. In addition, recombinant cytochrome P450s (CYPs) screening showed that CYP1A1, 2C19, 3A4, and 3A5 were the major metabolic enzymes involved in the formation of hydroxylation metabolites. Together, these results suggest that the isopentenyl group plays an important role in the metabolism of PYCs.
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PubMed
高影响因子
Metals
·
2021
·Vol. 11
·期 6
·919
·
IF 2.351
Feng Feng,Jiamei Liu,Mingxing Zhao,Lu Yu,Haixin Wang,Chunshan Lu,Qunfeng Zhang,Jia Zhao,Yanxia Sun,Jie Cen,Xiaonian Li
Gold as a precious metal resource has high recycling significance. However, the current extraction methods cannot achieve the both efficiency and environmental friendliness. In this paper, we propose a new gold leaching agent, which can leach gold under light condition by mixing iodoform (CHI3) with 1-butyl-3-methylimidazolium dicyanamide (BmimN(CN)2) ionic liquid. Under 25 °C and 13 W incandescent lamp irradiation, the leaching yield of gold can achieve 100 wt%, and the average leaching rate is 945 mg Au/(h·mol·CHI3) (18.9 times of that of the cyanidation method). Through the analysis of the results of radical inhibition experiment, UV-Vis and XPS, a possible leaching mechanism is proposed: the iodine radical generated by light oxidizes Au0to Au+, and then forms AuN(CN)2by coordinating with N(CN)2−. Subsequently, the ionic liquid and Au N(CN)2form a stable [Bmim]·[Au(N(CN)2)2] ion pair structure, further promoting the dissolution reaction. The leaching yield of gold can reach 81.9 wt% and 100 wt%, respectively, when applied to ore and waste electrical and electronic equipment (WEEE); the leaching yield of gold can also reach 100 wt% when applied to a waste catalyst by adding a Soxhlet extraction. The results show that this method is not only efficient, mild, and environmentally friendly, but also has strong adaptability and wide application prospects.Keywords:gold recovery;ionic liquid;free radical;waste catalyst;oxidation-complexation
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高影响因子
ACS Applied Materials & Interfaces
·
2019
·
IF 8.456
Jinyao Zhong,Zheng Xiao,Wenyue Liang,Yifei Wu,Qiaojue Ye,Haitao Xu,Haidong Deng,Liang Shen,Xiliang Feng,Yongbing Long
Microcavity is an efficient approach to manufacture colorful semitransparent organic solar cells (ST-OSCs) with high color purity by tailoring the transmission spectrum to narrow peaks. However, in this type of colorful semitransparent devices, high power conversion efficiency (PCE) and high peak transmittance are not yet simultaneously achieved. This paper proposes a new type of microcavity structure to achieve colorful ST-OSCs with both high PCE and high peak transmittance, in which a hybrid Au/Ag electrode is used as a mirror and WO3 is used as a spacer layer. First, it is demonstrated that the hybrid Au/Ag electrode mirror brings about an improvement of 7.7 and 5.5% for PCE and peak transmittance, respectively, when compared with those of the reference devices using the Ag electrode mirror. Specifically, the PCE of the optimized devices reaches the satisfactory value of over 9%, and the peak transmittance is over 25%. This value of PCE is the highest one reported so far for the microcavity-based ST-OSCs with the same peak transmittance. Second, it is demonstrated that the second-order resonance of the microcavity can be used to improve the color purity of green ST-OSCs by narrowing the transmission peak, and the combination of the second-order and third-order resonance can be used to construct colorful ST-OSCs with mixed colors. Thus, a novel approach is developed to tune the color of ST-OSCs, which is based on high-order resonance modes of the microcavity.
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PubMed
高影响因子
危险品化学品经营许可证（带存储）