A series of aminopropyl-functionalized silica nanoparticles were prepared through a basic two step sol-gel process in water. Prior to being aminopropyl-functionalized, silica particles with an average diameter of 549 nm were prepared from tetraethyl orthosilicate (TEOS), using a Stöber method. In a second step, aminopropyl-silica particles were prepared by silanization with 3-aminopropyltriethoxysilane (APTES), added drop by drop to the sol-gel mixture. The synthesized amino-functionalized silica particles are intended to be used as supports for immobilization of humic acids (HA), through electrostatic bonds. Furthermore, by inserting beside APTES, unhydrolysable mono-, di- or trifunctional alkylsilanes (methyltriethoxy silane (MeTES), trimethylethoxysilane (Me3ES), diethoxydimethylsilane (Me2DES) and 1,2-bis(triethoxysilyl)ethane (BETES)) onto silica particles surface, the spacing of the free amino groups was intended in order to facilitate their interaction with HA large molecules. Two sorts of HA were used for evaluating the immobilization capacity of the novel aminosilane supports. The results proved the efficient functionalization of silica nanoparticles with amino groups and showed that the immobilization of the two tested types of humic acid substances was well achieved for all the TEOS/APTES = 20/1 (molar ratio) silica hybrids having or not having the amino functions spaced by alkyl groups. It was shown that the density of aminopropyl functions is low enough at this low APTES fraction and do not require a further spacing by alkyl groups. Moreover, all the hybrids having negative zeta potential values exhibited low interaction with HA molecules.
from #Medicine via ola Kala on Inoreader http://ift.tt/1OfHvy0
via IFTTT
Αρχειοθήκη ιστολογίου
-
►
2023
(138)
- ► Φεβρουαρίου (74)
- ► Ιανουαρίου (64)
-
►
2022
(849)
- ► Δεκεμβρίου (61)
- ► Σεπτεμβρίου (74)
- ► Φεβρουαρίου (65)
-
►
2021
(2936)
- ► Δεκεμβρίου (59)
- ► Σεπτεμβρίου (180)
- ► Φεβρουαρίου (325)
-
►
2020
(1624)
- ► Δεκεμβρίου (293)
- ► Σεπτεμβρίου (234)
- ► Φεβρουαρίου (28)
-
►
2019
(13362)
- ► Δεκεμβρίου (19)
- ► Σεπτεμβρίου (54)
- ► Φεβρουαρίου (5586)
- ► Ιανουαρίου (5696)
-
►
2018
(66471)
- ► Δεκεμβρίου (5242)
- ► Σεπτεμβρίου (5478)
- ► Φεβρουαρίου (4835)
- ► Ιανουαρίου (5592)
-
►
2017
(44259)
- ► Δεκεμβρίου (5110)
- ► Σεπτεμβρίου (5105)
-
▼
2016
(7467)
- ► Δεκεμβρίου (514)
- ► Σεπτεμβρίου (1038)
- ► Φεβρουαρίου (793)
-
▼
Ιανουαρίου
(578)
-
▼
Ιαν 08
(50)
- Local and global visual processing and eating diso...
- Comparison of RNA extraction kits and histological...
- Rapid Identification of Pseudomonas spp. via Raman...
- Highly Sensitive Laser Scanning of Photon-Upconver...
- Environment-Sensitive Fluorescent Probe for the Hu...
- Disulfide Linkage Characterization of Disulfide Bo...
- Analysis of Chain Branch of Polyolefins by a New P...
- Cost-Effectiveness of Ranibizumab Versus Afliberce...
- Imaging Local Electric Field Distribution by Plasm...
- Sequential learning of psychomotor and visuospatia...
- Infrared and Raman screening of seized Novel Psych...
- Optional Sub-study to Intraoperative Imaging With ...
- Mitochondrial Respiratory Function in Mammalian Sk...
- Exosome Testing as a Screening Modality for Human ...
- A Phase Ib Trial of Concurrent Cetuximab (ERBITUX®...
- Metals, Vol. 6, Pages 15: Casting Alloy Design and...
- Metals, Vol. 6, Pages 14: Effective Synthesis and ...
- Photonics, Vol. 3, Pages 4: Design and Analysis of...
- Metabolites, Vol. 6, Pages 2: Using Molecular Netw...
- Nutrients, Vol. 8, Pages 31: Association of Dietar...
- Materials, Vol. 9, Pages 34: Aminopropyl-Silica Hy...
- JoF, Vol. 2, Pages 5: Pediatric Invasive Candidias...
- Marine Drugs, Vol. 14, Pages 14: Anti-Inflammatory...
- Nanomaterials, Vol. 6, Pages 13: White Light-Emitt...
- Nanomaterials, Vol. 6, Pages 12: The Coupled Photo...
- Materials, Vol. 9, Pages 33: A Critical Evaluation...
- Energies, Vol. 9, Pages 36: Developing a New HSR S...
- Symmetry, Vol. 8, Pages 2: Natural Abundance Isoto...
- Children, Vol. 3, Pages 1: Learning Lessons from A...
- Toxics, Vol. 4, Pages 1: Farmers’ Exposure to Pest...
- Annual Review of Cybertherapy and Telemedicine 2015
- Researchers Face Potential Danger from Protein Par...
- Study finds cerebrovascular disease to be major de...
- Water, Vol. 8, Pages 18: A Reliability Analysis of...
- Viruses, Vol. 8, Pages 13: The Influenza Virus H5N...
- Entropy, Vol. 18, Pages 22: Increment Entropy as a...
- Animals, Vol. 6, Pages 5: Welfare Conditions of Do...
- Viruses, Vol. 8, Pages 14: Metaviromics of Namib D...
- Buildings, Vol. 6, Pages 3: Assessment of the Perf...
- Entropy, Vol. 18, Pages 23: Long Range Dependence ...
- IJERPH, Vol. 13, Pages 116: Regional Differences i...
- IJERPH, Vol. 13, Pages 113: Unemployment Rate, Smo...
- IJERPH, Vol. 13, Pages 115: Descriptive Characteri...
- Cancer cell identification by bi-color ZnO and TiO...
- Real-time endoscopic Raman spectroscopy for in viv...
- IJMS, Vol. 17, Pages 77: Revealing the Effects of ...
- IJMS, Vol. 17, Pages 72: MiRNA-Target Interaction ...
- IJMS, Vol. 17, Pages 71: Anti-Oncogenic gem-Dihydr...
- IJMS, Vol. 17, Pages 76: Antiproliferative Activit...
- IJMS, Vol. 17, Pages 73: NLRP3 Upregulation in Ret...
-
▼
Ιαν 08
(50)
Αναζήτηση αυτού του ιστολογίου
Παρασκευή 8 Ιανουαρίου 2016
Materials, Vol. 9, Pages 34: Aminopropyl-Silica Hybrid Particles as Supports for Humic Acids Immobilization
Εγγραφή σε:
Σχόλια ανάρτησης (Atom)
-
Αλέξανδρος Γ. Σφακιανάκης Medicine by Alexandros G. Sfakianakis,Anapafseos 5 Agios Nikolaos 72100 Crete Greece,00302841026182,0030693260717...
-
heory of COVID-19 pathogenesis Publication date: November 2020Source: Medical Hypotheses, Volume 144Author(s): Yuichiro J. Suzuki ScienceD...
-
https://ift.tt/2MQ8Ai8
Δεν υπάρχουν σχόλια:
Δημοσίευση σχολίου
Σημείωση: Μόνο ένα μέλος αυτού του ιστολογίου μπορεί να αναρτήσει σχόλιο.