【摘 要】
：
Hollow silica nanospheres with radical pore on the surfaces were prepared using the assemblies of valine amphiphilic small molecule and benzene as double-templates through sol-gel method in tetramethylammonium hydroxide (25wt%) solution at the stirring ra
【机 构】
：
Key Laboratory of Textile Fiber and Products (Wuhan Textile University), Ministry of Education, Wuha
【出 处】
：
武汉理工大学学报（材料科学版）（英文版）
论文部分内容阅读
Hollow silica nanospheres with radical pore on the surfaces were prepared using the assemblies of valine amphiphilic small molecule and benzene as double-templates through sol-gel method in tetramethylammonium hydroxide (25wt%) solution at the stirring rate of 1 000 rpm. There are a lot of vertical pores on the surfaces of the hollow spheres after removing the templates in Muffle furnace at 550 ℃ for 5 h. The sample was characterized using field-emission scanning electron microscopy, transmission electron microscopy, Brunauer-Emmett-Teller (BET), X-ray diffraction, etc. The diameter, the vertical pore size of the nanospheres and the BET surface areas are 30-100 nm, 4.2 nm, and 570.5 m2/g, respectively. Because the high porosity and specific surface area, this kind of hollow sphere is the excellent antimicrobial carrier. The antibacterial activities of the silica nanospheres were evaluated by using a bacterial growth inhibitory assay. The experimental results show that the silica hollow spheres loaded with Ag+ have a good bactericidal effect.
其他文献
In order to facilitate self-compacting concrete to be better used in tunnel linings that can resist fires, a SiO2 aerogel-cement mortar coating was prepared. Based on the HC curve, a self compacting concrete cube specimens coated and uncoated with SiO2 ae
To reveal and utilize the interaction between Tamm plasmon polaritons (TPPs) and two-dimensional materials are promising for exploiting next-generation optoelectronic devices. Herein, the coupling mechanism between metal TPPs and monolayer WS2 along with
Hydration-heat-inhibiting materials(HIM) with polysaccharide as core material was prepared using microcapsule sustained-releasing technology, through a centrifugal spray granulation process after melting together. The preparation process parameters of HIM
A molecular modified PCE-type GA was self-synthesized, and the grindability concerning grinding duration and particle size distribution of ground cement was evaluated. Setting time, flowability, hydration heat, mechanical properties and microstructure of
Bituminous binders have been modified by using cocamide diethanolamide. The chemical material used in this study is used for the first-time on the purpose of modification of the bitumen. In addition to the conventional bitumen tests (penetration, softenin
To investigate the variation in the degree of polymerization calcium aluminium silicate hydrate (C-A-S-H) gel and its role in the evolution of the strength of waterglass slag binders, the compressive strength, hydration products, degree of hydration of th
Taking a Cu55Ni45 alloy as experimental alloy systems, we systematically studied the method of obtaining deep undercooling of alloy melt. Stable deep undercooling of alloy melt was obtained by the combination of molten glass purification and cyclic overhe
A hyperbranched epoxy (AHEP) resin with terminal allyl groups was synthesized. The number average molecular weight of the synthesized AHEP is 1260, the multi-dispersion coefficient is 1.88, and the branching degree is 0.9. The hyperbranched epoxy resin an
Both experimental and numerical approaches were used to study dynamic failure properties and patterns of flattened Brazilian discs, containing two prefabricated cracks intersected at a varying angle. Mechanism of crack initiation, propagation, and cut-thr
This article explores the effects of doping ferroelectric materials MgTiO3 with different proportions on the properties of polyaniline (PANI). PANI / MgTiO3 composites were prepared by in-situ composite method. Fourier transform infrared spectroscopy (FTI