نتایج جستجو برای: mesoporous structure

تعداد نتایج: 1576810  

2017
Yu-Jen Chou Bo-Jiang Hong Ying-Chih Lin Chen-Ying Wang Shao-Ju Shih

SiO₂-CaO-P₂O₅-based mesoporous bioactive glasses (MBGs) were synthesized by spray pyrolysis in this study. Three commonly used non-ionic tri-block copolymers (L121, P123, and F127) with various lengths of hydrophilic chains were applied as structural templates to achieve different pore sizes. A mesoporous structure was observed in each as-prepared specimen, and the results showed that the L121-...

2015
Maria Ignat Maria Emiliana Fortuna Liviu Sacarescu Mirela-Fernanda Zaltariov Valeria Harabagiu

The present research reports the synthesis of poly-N-isopropylacrylamide / mesoporous carbon composites, prepared by radical polymerization of N-isopropylacrylamide inside mesoporous carbon pores functionalized with carboxylic groups. The deposition of poly-N-isopropylacrylamide on mesoporous carbon was confirmed by FT-IR spectroscopy, TEM, N2-sorption measurements. The mesoporous carbon materi...

Journal: :Chemical communications 2010
Ahmed Mohamed El-Toni Mohamed Wasi Khan Mohamed Abbas Ibrahim Mohamed Abid Mansour Al-Hoshan Mohamed Al-Salhi

In this communication, we report the fabrication of silica nanospheres with a double mesoporous core-shell structure by a one-templating step two-pot synthesis route using an anionic surfactant.

Journal: :Chemical communications 2014
Ting Wang MingDong Wang ChenDi Ding JiaJun Fu

The self-complexation of mono-benzimidazole functionalized β-cyclodextrins was investigated. The unique molecular structure employed as supramolecular nanovalves were installed on the external surface of mesoporous silica to assemble mechanized silica nanoparticles, which showed pH-triggered release property.

Journal: :international journal of environmental research 0

ordered mesoporous carbon cmk-3 (omc) have been synthesized using mesoporous sba-15 silica as template and modified with cobalt carbonate. morphologies and surface texturing of materials werecharacterized by x-ray diffraction (xrd), scanning electron microscopy (sem) and n2 adsorption-desorptionisotherms. the cobalt modified ordered mesoporous carbon were found to have a surface area of 490.06m...

2010
Xiaoyu Wang Pan Wang Zihao Dong Zhengping Dong Zongyan Ma Jian Jiang Rong Li Jiantai Ma

An inorganic-organic hybrid fluorescence chemosensor (DA/SBA-15) was prepared by covalent immobilization of a dansylamide derivative into the channels of mesoporous silica material SBA-15 via (3-aminopropyl)triethoxysilane (APTES) groups. The primary hexagonally ordered mesoporous structure of SBA-15 was preserved after the grafting procedure. Fluorescence characterization shows that the obtain...

Lipases find great use in a broad number of biotechnology fields, especially dairy, detergents, drugs (ibuprofen, naproxen), chemicals, agriculture (pesticides, insecticides) and oil chemistry (the hydrolysis of fats and oils).�In order to increase the half-life of the enzyme and repeated use of it, in this study the immobilization of lipase on the mesoporous silica SBA-15 has been investigated...

Journal: :Chemical communications 2010
Sung Hoon Ahn Joo Hwan Koh Jin Ah Seo Jong Hak Kim

Randomly microphase-separated graft copolymers have been self-reorganized so as to exhibit a micellar structure with excellent connectivity upon tuning the solvent affinity. These copolymers are used as a structure-directing agent for organized mesoporous TiO(2) films with no grain boundaries, leading to enhanced solar conversion efficiency of dye-sensitized solar cells.

Journal: :Physical Chemistry Chemical Physics 2021

Combined experimental & theoretical approach for the elucidation of structure–property relations in niobium-doped mesoporous titania.

Mesoporous SiO2 nanopowder was synthesized under an acidic condition by a sol-gel method using various amounts of cetyltrimethyl ammonium bromide (CTAB) as structure directing agent. The samples were investigated with XRD, SEM, FTIR, TEM and N2 absorption-desorption analysis. Also, the incremental effect of surfactant were examined. The results obtained from the analysis suggested that an incre...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید