نتایج جستجو برای: functionalized silica based mesoporous

تعداد نتایج: 2986092  

Journal: :Dalton transactions 2016
Eva C Uribe Harris E Mason Jennifer A Shusterman Anthony Bruchet Heino Nitsche

The fundamental interaction of U(vi) with diethylphosphatoethyl triethoxysilane functionalized SBA-15 mesoporous silica is studied by macroscopic batch experiments and solid-state NMR spectroscopy. DPTS-functionalized silica has been shown to extract U(vi) from nitric acid solutions at or above pH 3. Extraction is dependent on pH and ionic strength. Single-pulse (31)P NMR on U(vi) contacted sam...

Journal: :Nanoscale 2016
Simon Heidegger Dorothée Gössl Alexandra Schmidt Stefan Niedermayer Christian Argyo Stefan Endres Thomas Bein Carole Bourquin

Multifunctional mesoporous silica nanoparticles (MSN) have attracted substantial attention with regard to their high potential for targeted drug delivery. For future clinical applications it is crucial to address safety concerns and understand the potential immunotoxicity of these nanoparticles. In this study, we assess the biocompatibility and functionality of multifunctional MSN in freshly is...

Journal: :Talanta 2016
Aisha Bibi Huangxian Ju

This work presents an efficient and selective enrichment method for glycoprotein/glycopeptides with sulfonic acid-functionalized mesoporous silica (SBA-15-SO3H), which is synthesized via simple oxidation of -SH groups with H2O2. The functionalized SBA-15 shows large surface area and accessible pores, and can selectively adsorb glycopeptides via hydrogen bond and hydrophilic interaction. Upon th...

2012
Farouq Twaiq

Adsorption of methanol and ethanol over mesoporous siliceous material are studied in the current paper. The pure mesoporous silica is prepared using tetraethylorthosilicate (TEOS) as silica source and dodecylamine as template at low pH. The prepared material was characterized using nitrogen adsorption,nX-ray diffraction (XRD) and scanning electron microscopy (SEM). The adsorption kinetics of me...

Journal: :Journal of Porous Materials 2022

Mesoporous molecular sieves silica materials had been functionalized employing 3-aminopropyltriethoxysilane as the surface decoration agent by a post-synthesis method and Eu Ti with different loading ratio were synchronously anchored on amino-functionalized framework incipient wetness impregnation method, respectively. The structures of synthesized samples evaluated means X-ray diffraction, Fou...

2013
Liliana Giraldo Juan Carlos Moreno-Piraján

Amino-functionalized SBA-15 mesoporous silica was prepared, characterized, and used as an adsorbent for heavy metal ions. The organic–inorganic hybrid material was obtained by a grafting procedure using SBA-15 silica with 3-aminopropyl-triethoxysilane and bis(2,4,4-trimethylpentyl) phosphinic acid (Cyanex 272), respectively. The structure and physicochemical properties of the materials were cha...

2009
Na Yuan Gang Cheng Yanqing An Zuliang Du Sixin Wu

Highly ordered mesoporous CdS nanowire arrays were synthesized by using mesoporous silica as hard template and cadmium xanthate (CdR(2)) as a single precursor. Upon etching silica, mesoporous CdS nanowire arrays were produced with a yield as high as 93 wt%. The nanowire arrays were characterized by XRD, N(2) adsorption, TEM, and SEM. The results show that the CdS products replicated from the me...

Journal: :Langmuir : the ACS journal of surfaces and colloids 2007
Huijuan Zhang Jun Wu Longping Zhou Dayong Zhang Limin Qi

Mesoporous silica materials with a variety of morphologies, such as monodisperse microspheres, gigantic hollow structures comprising a thin shell with a hole, and gigantic hollow structures consisting of an outer thin shell and an inner layer composed of many small spheres, have been readily synthesized in mixed water-ethanol solvents at room temperature using cetyltrimethylammonium bromide (CT...

Journal: :Langmuir : the ACS journal of surfaces and colloids 2009
Longping Zhou Guosong Hong Limin Qi Yunfeng Lu

Helical mesoporous silica nanofibers with parallel nanochannels were synthesized in high yield via a novel seeding-growth method by using the achiral cationic surfactant cetyltrimethylammonium bromide (CTAB) as template without auxiliary additives. A general entropy-driven model taking into account the icelike structure water due to the hydrophobic effect was proposed to explain the formation o...

Journal: :Exploration 2023

Mesoporous silica-based nanoparticles, including silica, organosilica and metal doped silica have widespread applications in biomedical applications. This review summarizes the of mesoporous nanoparticles field cancer immunotherapy. Strategies to regulate tumour microenvironment for immune activation are presented by highlighting structural compositional attributes nanoparticles.

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