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Tetraethyl orthosilicate
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Nghiên cứu này giới thiệu quy trình tổng hợp composite zeolite/MNPs đơn giản ở điều kiện tổng hợp: tỷ lệ khối lượng giữa MNPs:zeolite = 1:4 (w/w), tỷ lệ ethanol:H2O = 10:1 (v/v), 5 mL tetraethyl orthosilicate (TEOs), 90oC và 4 giờ.
9p
viplato
02-01-2024
4
2
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The physico-chemical properties of electrospun polyvinyl alcohol (PVA) based hydrogel composites were investigated. Tetraethyl orthosilicate (TEOS) was employed as a crosslinking agent. 2.5-7.5 wt% of gallic acid was successfully loaded into an electrospun poly vinyl alcohol fiber.
6p
viberbers
09-08-2023
4
3
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A major draw-back to large scale production of bioactive glasses is the high cost of the standard silica precursor, usually tetraethyl orthosilicate (TEOS). The current study describes a novel solegel preparation of 45S5 bioactive glass using diatom biosilica from cultured cells of the diatom, Aulacoseira granulata as substitute to TEOS.
7p
viberbers
09-08-2023
4
3
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Bài viết Tổng hợp vật liệu composite NaX/Fe3O4 và đánh giá khả năng hấp phụ nitrate trình bày một quy trình đơn giản, tiết kiệm thời gian và năng lượng để tổng hợp vật liệu composite NaX/Fe3O4, với tỷ lệ khối lượng zeolite NaX:Fe3O4 = 1,5:1 (g/g), thời gian khuấy trộn 2 giờ, nhiệt độ phòng, và nồng độ chất liên kết tetraethyl orthosilicate (TEOs) 1%.
9p
viblackwidow
07-04-2023
7
3
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In this study, we report a simple and economic one-pot synthesis of magnetite (Fe3O4) nanostructure and its modification with tetraethyl orthosilicate by coprecipitation method. The synthesized (Fe3O4@SiO2 ) nano sorbent was applied for enhanced adsorptive removal of methylene blue by ultrasonic wave driven batch experiments. After successful synthesis, the nanostructure was characterized for their physical structure by FT-IR, VSM, TEM, and XRD. For the maximum adsorptive performance of nano sorbent, various parameters were optimized, such as dose, pH, time, concentration, and temperature.
11p
tudichquannguyet
29-11-2021
11
1
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Advances in nanotechnology in recent years have led to a number of diverse applications of nanomaterials. Magnetic iron oxide nanoparticles (Fe3O4 NPs), a representative of magnetic nanomaterials, have gained much attention of many researchers all over the world due to their unique properties such as superparamagnetism, biocompatibility and high magnetic saturation.
7p
vidonut2711
08-11-2019
20
0
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Ionic liquids (ILs) have attached many attentions due to their interesting physicochemical properties. However, ionic liquids have several disadvantages including high viscosity, difficult to purify, separate and recycle, and expensive. Therefore, supported ionic liquids (SIL) have been developed to overcome these problems. SIL based on cellulose material was conventionally synthesized by silanization reaction between ionic liquid trialkoxyl silane and hydroxyl groups on the surface of cellulose.
7p
queencongchua3
09-09-2019
10
0
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Thiol-functionalized SBA-15 silicas have been directly synthesized by cocondensation of tetraethyl orthosilicate (TEOS) and 3-(trimethoxysilyl)-1-propanolthiol (TSPT) under hydrothermal condition. Mesoporous structure was obtained after the surfactant removal by Soxhlet and reflux ethanol extraction. These materials were characterized by means of powder X-ray diffraction, isotherms of nitrogen adsorption/desorption, thermal analysis, infrared spectroscopy and energy-dispersive X-ray spectroscopy.
9p
thiendiadaodien_9
04-03-2019
22
0
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Hybrid materials based on tetraethyl orthosilicate (TEOS), hydroxypropyl cellulose (HPC), or hydroxypropyl methyl cellulose (HPMC) with silver nanoparticles were synthesized. They were analyzed and characterized using differential thermal analysis and thermogravimetry, atomic force microscopy, and static contact angle measurements.
11p
nutifooddau
27-01-2019
13
2
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Nghiên cứu này nhằm xác định hiệu quả và mối quan hệ giữa tiền chất tetraethyl orthosilicate (TEOS) và NH3 chất xúc tác cho chuẩn bị silica cấu trúc nano thông qua phương pháp ngưng tụ, dựa trên tỷ lệ mol của chúng. Các silica cấu trúc nano được chuẩn bị trong dung dịch hỗn hợp NH3, ethanol, nước với các tính toán đã cho trước đó. Các chuẩn bị được thiết lập ở nhiệt độ phòng trong 12 giờ, sau đó lọc kết tủa tổng hợp.
5p
lamtan3547
04-11-2018
66
1
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