نتایج جستجو برای: functionalized mesoporous materials
تعداد نتایج: 462865 فیلتر نتایج به سال:
Surface-functionalized nanoporous silica, often referred to as self-assembled monolayers on mesoporous supports (SAMMS), has previously demonstrated the ability to serve as very effective heavy metal sorbents in a range of aquatic and environmental systems, suggesting that they may be advantageously utilized for biomedical applications such as chelation therapy. Herein we evaluate surface chemi...
INTRODUCTION Confinement of biomolecules in structured nanoporous materials offers several desirable features ranging from chemical and thermal stability, to resistance to degradation from the external environment. A new generation of mesoporous materials presents exciting new possibilities for the formulation and controlled release of biological agents. Such materials address niche application...
Mesoporous Materials In article number 2208316, Xiaohui Ju and co-workers report the design of free-blockage reactive oxygen species (ROS)-responsive mesoporous silica nanoparticles (MSNs) as potential drug delivery systems. Methyl sulfide units are functionalized onto MSNs through co-condensation or grafting pathways. an ROS-rich environment, nanocarriers undergo structure polarity changes rel...
Carbon sequestration via the carbon capture and storage (CCS) method is one of most useful methods lowering CO2 emissions in atmosphere. Ethylenediamine (EDA)- triethylenetetramine (TETA)-modified mesoporous (MC) has been successfully prepared as a material. The effect various concentrations EDA or TETA added to MC, well activated (AC), on their adsorption capacity were investigated using high-...
Functionalized mesoporous silica has applications in separations science, catalysis, and sensors. In this work, we studied the fundamental interactions of trivalent cations with functionalized mesoporous silica. We contacted trivalent cations of varying ionic radii with N-[5-(trimethoxysilyl)-2-aza-1-oxopentyl]caprolactam functionalized mesoporous silica with the aim of probing the binding mech...
Ordered imidazolyl-functionalized mesoporous polymers (IM-MPs) are directly synthesized by an evaporation-induced self-assembly method, which are further functionalized with bromoethane and employed as highly efficient and recyclable catalysts for the cycloaddition of CO2 to epoxides.
In this study the effect of surface modification of mesoporous silica nanoparticles (MSNs) on its adsorption capacities and protein stability after immobilization of beta-lactoglobulin B (BLG-B) was investigated. For this purpose, non-functionalized (KIT-6) and aminopropyl-functionalized cubic Ia3d mesoporous silica ([n-PrNH2-KIT-6]) nanoparticles were used as nanoporous supports. Aminopropyl-f...
The present study deals with the synthesis andfunctionalization of mesoporous silica nanoparticles as drug delivery platforms. SBA-15 nanorods with high surface area (1010 m2g-1) were functionalized by post grafting method using 3-mercaptopropyl trimethoxysilane (MPTS). The parent and thiol-functionalized SBA-15 nanorods were used as nanocarriers for an anticancer drug (gemcitabine). The charac...
Mesoporous silica thin films and nanoparticles prepared by surfactant-templated sol–gel techniques are versatile substrates that can be easily erivatized with active molecules to create functional materials. By exploiting the chemical and physical differences that exist in different regions f the mesostructure, active molecules can be deliberately placed using one-pot techniques, or they can be...
The adsorption of CO2 on amine modified periodic mesoporous organosilicas (PMOs) has been investigated. An ethenylene-bridged PMO is modified with a wide range of diamines and polyamines. A variety of dangling N-containing functionalities, i.e., diaminobutane, diaminohexane, diaminododecane, diethylenetriamine and tetraethylenepentamine, as nucleophiles in a substitution reaction is used. The C...
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