搜索结果: 1-15 共查到“工学 silica”相关记录94条 . 查询时间(0.093 秒)
Rosin modified aminated mesoporous silica adsorbed tea tree oil sustained-release system for improve synergistic antibacterial and long-term antibacterial effects
TTO antibacterial evaluation mesoporous silica rosin sustained release
2023/12/5
Tea tree oil, a natural antibacterial compound, cannot be used effectively because of its volatile nature. In this work, a biocompatible carrier was prepared and loaded with tea tree essential oil. Th...
Development and evaluation of a hydrogenated rosin (β-acryloxyl ethyl) ester–bonded silica stationary phase for high-performance liquid chromatography separation of paclitaxel from yew bark
Rosin-based stationary phase Paclitaxel Retention mechanism Separation Yew-bark extract
2023/12/5
Paclitaxel (PTX) is a complex diterpenoid anticancer drug whose separation from yew biomass poses a significant challenge. In this study, a new stationary phase comprising hydrogenated rosin (β-acrylo...
Exploring the effects of bound rubber phase on the physical properties of nano-silica composites with a vitrimer-like bond exchangeable matrix
DYNAMIC COVALENT CHEMISTRY CROSS-LINK DENSITY MECHANICAL-PROPERTIES POLYMER NANOCOMPOSITES
2023/11/30
We demonstrate the preparation and unique properties of composite vitrimer-like materials containing silica nanoparticles (SNPs). The matrix is composed of polyacrylate-based polymers crosslinked via ...
Superamphiphobic nanocellulose aerogels loaded with silica nanoparticles
Superamphiphobic Nanocellulose Aerogel Hierarchical structure Silica nanoparticles
2024/2/29
Superamphiphobic aerogels of cellulose nanofibrils (CNF) were successfully fabricated based on their porous rough structure via the chemical vapor deposition of fluorosilane reagent. FE-SEM images sho...
Researchers develop faster,precise silica coating process for quantum dot nanorods
Researchers develop faster silica coating process quantum dot nanorods
2016/7/15
CdSe/CdS core/shell quantum dot nanorods (QDNRs) exhibit anisotropic optical properties. Overcoating QDNRs with silica (SiO2) shells is desirable for protecting the surface of the inorganic core, impa...
Patterned Well-Ordered Mesoporous Silica Films for Device Fabrication
Accessible pores Device fabrication methods Lithography Dye quenching
2014/10/21
Developing effective methods of generating thin metal oxide films are important for sensing and separations applications. An obstacle to device fabrication is controlling the size and spatial orientat...
Ferric hydrogen sulfate supported on silica-coated nickel ferrite nanoparticles as new and green magnetically separable catalyst for 1,8-dioxodecahydroacridine synthesis
Magnetically separable catalyst Ferric hydrogen sulfate Nickel ferrite nanoparticles 1,8-Dioxodecahydroacridine
2014/3/8
A new magnetically separable catalyst consisting of ferric hydrogen sulfate supported on silica-coated nickel ferrite nanoparticles was prepared. The synthesized catalyst was characterized using vibra...
Silica-bonded N-propylpiperazine sodium n-propionate as recyclable catalyst for synthesis of 4H-pyran derivatives（图）
Silica-bonded n-propylpiperazine sodium n-propionate Heterogeneous solid base catalyst Aldehyde
2013/12/5
Silica-bonded N-propylpiperazine sodium n-propionate (SBPPSP) was found to act as an efficient solid base for the preparation of a series of 4H-benzo[b]pyran derivatives. SBPPSP was used as a recyclab...
Silica-Bonded N-Propylpiperazine Sodium n-Propionate as Recyclable Basic Catalyst for Synthesis of 3,4-Dihydropyrano[c]chromene Derivatives and Biscoumarins（图）
silica-bonded N-propylpiperazine sodium n-propionate silica-bonded N-propylpiperazine methyl n-propionate aromatic aldehydes 3,4-dihydropyrano[c]chromenes biscoumarins
2013/10/4
A simple and efficient procedure for the preparation of silica-bonded N-propylpiperazine sodium n-propionate (SBPPSP) by the hydrolysis of silica-bonded N-propylpiperazine methyl n-propionate (SBPPMP)...
Application of Amino-Functionalized SBA-15 Type Mesoporous Silica in One-Pot Synthesis of Spirooxindoles（图）
amino-functionalized SBA-15 spirooxindoles isatin nano-reactor green synthesis
2013/10/4
Amino-functionalized SBA-15 (SBA-Pr-NH2) has been used as a new basic nanocatalyst in the one-pot synthesis of spirooxindole derivatives via the three-component condensation reaction of isatins, activ...
Nano-Fe3O4 Encapsulated-Silica Particles Bearing Sulfonic Acid Groups as a Magnetically Separable Catalyst for Highly Efficient Knoevenagel Condensation and Michael Addition Reactions（图）
magnetic nanoparticle silica Knoevenagel condensation Michael addition cyclic diketone
2013/10/4
Sulfonic acid-functionalized silica-coated nano-Fe3O4 particles (Fe3O4@SiO2-SO3H) have been prepared as a novel heterogeneous acid using a facile process. The material was subsequently identified as a...
Well-Ordered Mesoporous Silica Nanoparticles as a Recoverable Catalyst for One-Pot Multicomponent Synthesis of 4H-Chromene Derivatives（图）
green synthesis multicomponent reactions 4H-chromene derivatives mesoporous silica nanoparticles
2013/10/4
A simple, efficient and environmentally benign protocol for the synthesis of 4H-chromene derivatives was developed using bio-compatible, neutral, and recoverable mesoporous silica nanoparticles as a c...
A Simple and Environmentally Benign Protocol for Biginelli Reactions Catalyzed by Silica-Bonded S-Sulfonic Acid（图）
Biginelli reaction silica-bonded S-sulfonic acid dihydropyrimidinone
2013/10/5
A protocol for the synthesis of 3,4-dihydropyrimidin-2(1H)-ones and -thiones was developed by means of a three-component condensation of an aldehyde, a β-dicarbonyl compound, and urea or thiourea in a...
Photocatalytic Synthesis of Phenol by Direct Hydroxylation of Benzene by a Modified Nanoporous Silica (LUS-1) under Sunlight（图）
mesoporous silica photocatalyst phenol benzene hydroxylation sunlight nanoporous silica carbon nitride
2013/10/5
Fe-g-C3N4-LUS-1 was prepared by the thermal decomposition of dicyandiamide inside the pores of LUS-1 under an inert atmosphere. It was used as a photocatalyst for the hydroxylation of benzene to pheno...
Nano Silica with High Surface Area from Rice Husk as a Support for 12-Tungstophosphoric Acid: An Efficient Nano Catalyst in Some Organic Reactions（图）
amorphous silica heteropolyacid heterogeneous catalysis nano catalyst rice husk
2013/10/5
Nano silica was prepared from rice husk with high surface area. X-ray diffraction (XRD) pattern showed that the amorphous form of silica was produced. Chemical composition of the nano silica was estim...
