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The situ preparation of silica nanoparticles on the surface of functionalized graphene nanoplatelets
A method for situ preparing a hybrid material consisting of silica nanoparticles (SiO(2)) attached onto the surface of functionalized graphene nanoplatelets (f-GNPs) is proposed. Firstly, polyacrylic acid (PAA) was grafted to the surface of f-GNPs to increase reacting sites, and then 3-aminopropyltr...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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Springer
2014
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3991900/ https://www.ncbi.nlm.nih.gov/pubmed/24717037 http://dx.doi.org/10.1186/1556-276X-9-172 |
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author | Li, Jiani Yu, Kejing Qian, Kun Cao, Haijian Lu, Xuefeng Sun, Jie |
author_facet | Li, Jiani Yu, Kejing Qian, Kun Cao, Haijian Lu, Xuefeng Sun, Jie |
author_sort | Li, Jiani |
collection | PubMed |
description | A method for situ preparing a hybrid material consisting of silica nanoparticles (SiO(2)) attached onto the surface of functionalized graphene nanoplatelets (f-GNPs) is proposed. Firstly, polyacrylic acid (PAA) was grafted to the surface of f-GNPs to increase reacting sites, and then 3-aminopropyltriethoxysilane (APTES) KH550 reacted with abovementioned product PAA-GNPs to obtain siloxane-GNPs, thus providing reaction sites for the growth of SiO(2) on the surface of GNPs. Finally, the SiO(2)/graphene nanoplatelets (SiO(2)/GNPs) hybrid material is obtained through introducing siloxane-GNPs into a solution of tetraethyl orthosilicate, ammonia and ethanol for hours' reaction. The results from Fourier transform infrared spectroscopy (FTIR) showed that SiO(2) particles have situ grown on the surface of GNPs through chemical bonds as Si-O-Si. And the nanostructure of hybrid materials was characterized by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). All the images indicated that SiO(2) particles with similar sizes were grafted on the surface of graphene nanoplatelets successfully. And TEM images also showed the whole growth process of SiO(2) particles on the surface of graphene as time grows. Moreover, TGA traces suggested the SiO(2)/GNPs hybrid material had stable thermal stability. And at 900°C, the residual weight fraction of polymer on siloxane-GNPs was about 94.2% and that of SiO(2) particles on hybrid materials was about 75.0%. However, the result of Raman spectroscopy showed that carbon atoms of graphene nanoplatelets became much more disordered, due to the destroyed carbon domains during the process of chemical drafting. Through orthogonal experiments, hybrid materials with various sizes of SiO(2) particles were prepared, thus achieving the particle sizes controllable. And the factors’ level of significance is as follows: the quantity of ammonia > the quantity of tetraethyl orthosilicate (TEOS) > the reaction time. |
format | Online Article Text |
id | pubmed-3991900 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2014 |
publisher | Springer |
record_format | MEDLINE/PubMed |
spelling | pubmed-39919002014-05-01 The situ preparation of silica nanoparticles on the surface of functionalized graphene nanoplatelets Li, Jiani Yu, Kejing Qian, Kun Cao, Haijian Lu, Xuefeng Sun, Jie Nanoscale Res Lett Nano Express A method for situ preparing a hybrid material consisting of silica nanoparticles (SiO(2)) attached onto the surface of functionalized graphene nanoplatelets (f-GNPs) is proposed. Firstly, polyacrylic acid (PAA) was grafted to the surface of f-GNPs to increase reacting sites, and then 3-aminopropyltriethoxysilane (APTES) KH550 reacted with abovementioned product PAA-GNPs to obtain siloxane-GNPs, thus providing reaction sites for the growth of SiO(2) on the surface of GNPs. Finally, the SiO(2)/graphene nanoplatelets (SiO(2)/GNPs) hybrid material is obtained through introducing siloxane-GNPs into a solution of tetraethyl orthosilicate, ammonia and ethanol for hours' reaction. The results from Fourier transform infrared spectroscopy (FTIR) showed that SiO(2) particles have situ grown on the surface of GNPs through chemical bonds as Si-O-Si. And the nanostructure of hybrid materials was characterized by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). All the images indicated that SiO(2) particles with similar sizes were grafted on the surface of graphene nanoplatelets successfully. And TEM images also showed the whole growth process of SiO(2) particles on the surface of graphene as time grows. Moreover, TGA traces suggested the SiO(2)/GNPs hybrid material had stable thermal stability. And at 900°C, the residual weight fraction of polymer on siloxane-GNPs was about 94.2% and that of SiO(2) particles on hybrid materials was about 75.0%. However, the result of Raman spectroscopy showed that carbon atoms of graphene nanoplatelets became much more disordered, due to the destroyed carbon domains during the process of chemical drafting. Through orthogonal experiments, hybrid materials with various sizes of SiO(2) particles were prepared, thus achieving the particle sizes controllable. And the factors’ level of significance is as follows: the quantity of ammonia > the quantity of tetraethyl orthosilicate (TEOS) > the reaction time. Springer 2014-04-09 /pmc/articles/PMC3991900/ /pubmed/24717037 http://dx.doi.org/10.1186/1556-276X-9-172 Text en Copyright © 2014 Li et al.; licensee Springer. http://creativecommons.org/licenses/by/2.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. |
spellingShingle | Nano Express Li, Jiani Yu, Kejing Qian, Kun Cao, Haijian Lu, Xuefeng Sun, Jie The situ preparation of silica nanoparticles on the surface of functionalized graphene nanoplatelets |
title | The situ preparation of silica nanoparticles on the surface of functionalized graphene nanoplatelets |
title_full | The situ preparation of silica nanoparticles on the surface of functionalized graphene nanoplatelets |
title_fullStr | The situ preparation of silica nanoparticles on the surface of functionalized graphene nanoplatelets |
title_full_unstemmed | The situ preparation of silica nanoparticles on the surface of functionalized graphene nanoplatelets |
title_short | The situ preparation of silica nanoparticles on the surface of functionalized graphene nanoplatelets |
title_sort | situ preparation of silica nanoparticles on the surface of functionalized graphene nanoplatelets |
topic | Nano Express |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3991900/ https://www.ncbi.nlm.nih.gov/pubmed/24717037 http://dx.doi.org/10.1186/1556-276X-9-172 |
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