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169 results on '"Dong, Xianming"'

23. Electrospun Nanofibrous Membrane with Antibacterial and Antiviral Properties Decorated with Myoporum Bontioides Extract and Silver-Doped Carbon Nitride Nanoparticles for Medical Masks Application

Author

Chen, Pinhong, primary, Zhou, Wuyi, additional, Yang, Zhi, additional, Mai, Zhuoxian, additional, Huang, Ziyun, additional, Bie, Yongshuang, additional, Wu, Shangjing, additional, Dong, Xianming, additional, Fu, Xianjun, additional, Ko, Frank, additional, Zhang, Shiying, additional, Zheng, Wenxu, additional, and Zhang, Shengsen, additional

Published
2022
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25. Fabrication and Application of Photocatalytic Composites and Water Treatment Facility Based on 3D Printing Technology

Author

Dong Xianming, Zhou Wuyi, Di Liu, Chen Ziyao, Gao Qiongzhi, Dongsong Lin, Zheng Wenxu, and Mai Zhirui

Subjects
Materials science, Polymers and Plastics, Composite number, Organic chemistry, 02 engineering and technology, 010402 general chemistry, 01 natural sciences, composites, Article, Matrix (chemical analysis), chemistry.chemical_compound, QD241-441, Polylactic acid, photocurable coating, water treatment equipment, polylactic acid, titanium dioxide, General Chemistry, 3D printing, 021001 nanoscience & nanotechnology, 0104 chemical sciences, Wastewater, chemistry, Chemical engineering, Titanium dioxide, Photocatalysis, Degradation (geology), Water treatment, 0210 nano-technology
Abstract

Currently, the degradation of organic pollutants in wastewater by photocatalytic technology has attracted great attention. In this study, a new type of 3D printing material with photocatalytic activity was first prepared to print a water treatment equipment, and then a layer of silver-loaded TiO2 was coated on the equipment to further improve the catalytic degradation performance. The composite filaments with a diameter of 1.75 ± 0.05 mm were prepared by a melt blending method, which contained 10 wt% of modified TiO2 and 90 wt% of PLA. The silver-loaded TiO2 was uniformly coated on the equipment through a UV-curing method. The final results showed that those modified particles were uniformly dispersed in the PLA matrix. The stable printing composite filaments could be produced when 10 wt% TiO2 was added to the PLA matrix. Moreover, the photocatalytic degradation performance could be effectively improved after 5 wt% of silver loading was added. This novel facility showed good degradability of organic compounds in wastewater and bactericidal effect, which had potential applications for the drinking water treatment in the future.

Published
2021

27. Novel AIE luminescent tetraphenylethene-doped poly (lactic acid) composites for fused deposition modeling and their application in fluorescent analysis of 3D printed products

Author

Yang, Feiwen, primary, Ye, Xinliang, additional, Chen, Guoguang, additional, Xiao, Jialin, additional, Wu, Zhuoxing, additional, Luo, Ying, additional, Zheng, Wenxu, additional, Zhou, Wuyi, additional, Wang, Li, additional, Lu, Bingheng, additional, Wei, Yen, additional, Yang, Zhiyong, additional, Chi, Zhenguo, additional, and Dong, Xianming, additional

Published
2021
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30. Rational design of hollow mesoporous titania nanoparticles loaded with curcumin for UV-controlled release and targeted drug delivery

Author

Zhuoxian Mai, Cao Qingyun, Dong Xianming, Zhou Wuyi, Hongwu Zhang, Wenhua Huang, Jiali Chen, and Hu Yang

Subjects
Materials science, Curcumin, Biocompatibility, Ultraviolet Rays, Nanoparticle, Metal Nanoparticles, Bioengineering, Apoptosis, 02 engineering and technology, 010402 general chemistry, 01 natural sciences, Antioxidants, chemistry.chemical_compound, Drug Delivery Systems, Folic Acid, Dynamic light scattering, Zeta potential, Humans, General Materials Science, Electrical and Electronic Engineering, Fourier transform infrared spectroscopy, Titanium, Polyethylenimine, Mechanical Engineering, General Chemistry, Hep G2 Cells, 021001 nanoscience & nanotechnology, Controlled release, 0104 chemical sciences, chemistry, Targeted drug delivery, Chemical engineering, Mechanics of Materials, Delayed-Action Preparations, MCF-7 Cells, 0210 nano-technology
Abstract

Curcumin (Cur), appeared to provide huge potential in biomedical application. However, its therapeutic efficacy was greatly limited as the result of poor solubility and instability. To address these limitations, we create a new type of hollow mesoporous titania nanoparticle (HMTN) to encapsulate Cur. HMTN was decorated with a layer of hydrophilic polyethylenimine (PEI), which controlled the release rate of Cur inside the pore due to its dendritic structure. Combined with the folic acid (FA) mediated targeting effect, the potential multifunctional Cur loaded titania nanoparticle (Cur-FA-PEI-HMTN) showed excellent biocompatibility and bioavailability, as well as the UV-responsive drug release properties. The operating parameters to prepare hollow structure were studied and the Cur-FA-PEI-HMTN nanosystem had been fully characterized by Brunauer–Emmet–Teller, Fourier transform infrared spectroscopy, transmission electron microscope, thermal gravity analysis, differential thermal analysis, x-ray diffraction, dynamic light scattering and zeta potential. In addition, the hemolytic test, as well as CCK8, flow cytometry, Hoechst 33342 staining experiment, were carried out to confirm the low cytotoxity and high biocompatibility. The confocal microscopy analysis results also revealed the increasing uptake of Cur@FA-PEI-HMTN by MCF-7 cells. The synthesized nanoparticles displayed great potential as drug nanovehicles with high biocompatibility.

Published
2021

34. High Flux and Hydrophilic Fibrous Ultrafiltration Membranes Based on Electrospun Titanium Dioxide Nanoparticles/Polyethylene Oxide/Poly(vinylidene fluoride) Composite Scaffolds

Author

Hu Yang, Dong Xianming, Li Jinzhen, Wei Liu, Zhou Wuyi, Xiangchao Zhang, and Xingyao Weng

Subjects
Materials science, 020502 materials, Composite number, Biomedical Engineering, Ultrafiltration, Bioengineering, 02 engineering and technology, General Chemistry, Polyethylene oxide, 021001 nanoscience & nanotechnology, Condensed Matter Physics, chemistry.chemical_compound, High flux, Membrane, 0205 materials engineering, chemistry, Titanium dioxide nanoparticles, General Materials Science, Composite material, 0210 nano-technology, Fluoride
Published
2017

35. Novel functional mesoporous silica nanoparticles loaded with Vitamin E acetate as smart platforms for pH responsive delivery with high bioactivity

Author

Zhou Wuyi, Hu Yang, Hongwu Zhang, Bin Fu, Fang Liu, Zhuoxian Mai, Wenhua Huang, Jiali Chen, and Dong Xianming

Subjects
Biocompatibility, Nanoparticle, 02 engineering and technology, 010402 general chemistry, 01 natural sciences, Antioxidants, Cell Line, Rats, Sprague-Dawley, Biomaterials, Colloid and Surface Chemistry, Dynamic light scattering, Animals, Vitamin E, Organic chemistry, Fourier transform infrared spectroscopy, Vitamin E Acetate, Chemistry, Hydrogen-Ion Concentration, Mesoporous silica, Silicon Dioxide, 021001 nanoscience & nanotechnology, 0104 chemical sciences, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, Drug Liberation, Delayed-Action Preparations, Drug delivery, Nanoparticles, 0210 nano-technology, Mesoporous material, Porosity, Nuclear chemistry
Abstract

Vitamin E (VE) exerts promising antioxidant activities against free radicals. However, its therapeutic efficacy and practical application are greatly restricted as a result of poor solubility, instability and low bioavailability. In this work, novel amino functionalized mesoporous silica nanoparticles (MSNs) were employed as the smart carriers to encapsulate Vitamin E acetate by the combination of soft-template method and recrystallization approach. Typically, two different surfactants were used as organic templates to fabricate different MSNs with various pore size distributions (∼4 nm and ∼25 nm). According to the characterization results such as Brunauer-Emmet-Teller (BET), fourier transform infrared spectroscopy (FTIR), transmission electron microscope (TEM), thermal gravity analysis (TGA), differential thermal analysis (DTA), X-ray diffraction (XRD), dynamic light scattering (DLS) and UV–vis diffuse reflectance spectroscopy, the drug delivery systems were successfully fabricated and the loading capacity (LC%) and entrapment efficiency (EE%) were also assessed. In addition, the results revealed that the VE loaded nanoparticles dispersed very well in PBS (pH = 7.4) and released VE in a pH-responsive manner. Importantly, the antioxidant effects of the VE loaded nanoparticles were also investigated by DPPH assays after exposure to air for 48 h, showing that VE molecules encapsulated inside the mesoporous channels suffered from less degradation, compared to the pure VE. In vitro cell tests and hemolytic experiments revealed the outstanding biocompatibility and low cytotoxicity. In conclusion, the functionalized mesoporous silica combined with VE might act as potential antioxidant drug formations in clinical application.

Published
2017

44. Synergistic Enhancement of Photocatalytic Performance of Mesoporous TiO2 enabled by Tunable Crystal Phase and Hybridization with Graphene Oxide.

Author

Yuan, Xiaomin, Wang, Xiao, Zhang, Shaoyu, Dong, Xianming, Zhang, Shengsen, Zhou, Wuyi, Zhang, Chaoqun, and Luo, Ying

Subjects
GRAPHENE oxide, PHOTOCATALYSTS, RUTILE, VISIBLE spectra, CRYSTALS
Abstract

Tailoring photocatalytic performance of TiO2 through tuning crystal phase and hybridization is a big challenge in the field of photocatalytic application. In this study, the mesoporous TiO2 (M‐TiO2) particles with tunable crystal phase were synthesized using rape pollen as the bio‐template with and without acid treatment. It was found that the acidification pretreatment of pollen template had obvious effect on the crystal phase of TiO2. The pure anatase titanium dioxides (MA‐TiO2) were prepared using the pure pollen as the template, while those using the acidified pollen template were anatase and rutile polycrystalline titanium dioxide (MAR‐TiO2) which exhibited better catalytic activity. Furthermore, the hybridization between MAR‐TiO2 and graphene oxide (MAR‐TiO2/GO) were achieved by the hydrothermal methods and their photocatalytic performance was studied by the degradation of methyl orange (MO) under ultraviolet and visible light. Compared with MAR‐TiO2, the MAR‐TiO2/GO nano‐composites possessed large specific surface area and narrow band gap due to the synergetic effect between MAR‐TiO2 and GO, which increased photocatalytic activity towards the photo‐degradation of MO under ultraviolet and visible light. The degradation rates of MAR‐TiO2/GO under UV light and visible light were 92 % in 105 min and 97 % in 540 min, respectively. [ABSTRACT FROM AUTHOR]

Published
2021
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45. Sr2MgSi2O7:Eu2+, Dy3+ phosphor‐reinforced wood plastic composites with photoluminescence properties for 3D printing.

Author

Yang, Feiwen, Guo, Xiaoyu, Zeng, Zhihao, Xiao, Jialin, Li, Hualiu, Luo, Ying, Guan, Litao, Zheng, Wenxu, Zhou, Wuyi, and Dong, Xianming

Subjects
THREE-dimensional printing, ENGINEERED wood, FOURIER transform infrared spectroscopy, SILANE coupling agents, WOOD flour, PHOSPHORS, PHOTOLUMINESCENCE
Abstract

Combining wood plastic composites with 3D printing technology can easily manufacture parts with complex shapes and wood colors, but the single function limits their applications. In this research, Sr2MgSi2O7:Eu2+, Dy3+ phosphors/particleboard wood flour/poly (lactic acid) (SMSED/PWF/PLA) photoluminescence composites for 3D printing were successfully manufactured by melt extrusion. The water resistance and chemical structure of SMSED phosphors modified with five different types of silane coupling agents were characterized by water‐resistance test, Fourier transform infrared spectroscopy, and X‐ray diffraction. It was found that 3‐aminopropyltriethoxysilane (KH550) had the best effect on the modification of SMSED phosphors, formed a dense protective film. Afterward, the effect of KH550‐modified SMSED (KH550‐SMSED) phosphors content on the thermo‐mechanical properties of wood plastic composites was studied. The experimental results indicated that the mechanical properties and thermal stability of wood plastic composites were significantly improved, with the incorporation of KH550‐SMSED phosphors. Finally, based on SMSED/PWF/PLA composites and 3D printing technology, a safety warning model that could emit blue light in the dark and a small dinosaur artwork that could swing flexibly were prepared. [ABSTRACT FROM AUTHOR]

Published
2021
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