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Large-scale synthes...
Large-scale synthesis of 2D-silica (SiOx) nanosheets using graphene oxide (GO) as a template material
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- Birdsong, Björn K. (author)
- KTH,Polymera material,KTH Royal Inst Technol, Dept Fibre & Polymer Technol, Teknikringen 58, S-11428 Stockholm, Sweden.
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- Hoogendoorn, Billy W. (author)
- KTH,Polymera material,Department of Fibre and Polymer Technology, KTH Royal Institute of Technology, Teknikringen 58 11428 Stockholm Sweden,KTH Royal Inst Technol, Dept Fibre & Polymer Technol, Teknikringen 58, S-11428 Stockholm, Sweden.
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- Nilsson, Fritjof, Docent, 1978- (author)
- Mittuniversitetet,KTH,Polymera material,Mid Sweden University Sundsvall 85170 Sweden,Institutionen för ingenjörsvetenskap, matematik och ämnesdidaktik (2023-)
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- Andersson, Richard L., 1985- (author)
- KTH,Polymera material,KTH Royal Inst Technol, Dept Fibre & Polymer Technol, Teknikringen 58, S-11428 Stockholm, Sweden.
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- Capezza, Antonio Jose (author)
- KTH,Polymera material,KTH Royal Inst Technol, Dept Fibre & Polymer Technol, Teknikringen 58, S-11428 Stockholm, Sweden.
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- Hedenqvist, Mikael S. (author)
- KTH,Polymera material,KTH Royal Inst Technol, Dept Fibre & Polymer Technol, Teknikringen 58, S-11428 Stockholm, Sweden.
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- Farris, Stefano (author)
- DeFENS - Department of Food, Environmental and Nutritional Sciences Food Packaging Laboratory, Via Celoria 2, Milan, 20133, Italy,DeFENS Dept Food, Environm & Nutr Sci Food Packaging Lab, Via Celoria 2, I-20133 Milan, Italy.
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- Guerrero, Antonio (author)
- Department of Chemical Engineering, Escuela Politécnica Superior, Universidad de Sevilla, Sevilla, 41011, Spain,Univ Seville, Escuela Politecn Super, Dept Chem Engn, Seville 41011, Spain.
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- Olsson, Richard (author)
- KTH,Polymera material,KTH Royal Inst Technol, Dept Fibre & Polymer Technol, Teknikringen 58, S-11428 Stockholm, Sweden.
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(creator_code:org_t)
- Royal Society of Chemistry (RSC), 2023
- 2023
- English.
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In: Nanoscale. - : Royal Society of Chemistry (RSC). - 2040-3364 .- 2040-3372. ; 15:31, s. 13037-13048
- Related links:
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
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- Graphene oxide (GO) was used in this study as a template to successfully synthesize silicon oxide (SiOx) based 2D-nanomaterials, adapting the same morphological features as the GO sheets. By performing a controlled condensation reaction using low concentrations of GO (<0.5 wt%), the study shows how to obtain 2D-nanoflakes, consisting of GO-flakes coated with a silica precursor that were ca. 500 nm in lateral diameter and ca. 1.5 nm in thickness. XPS revealed that the silanes had linked covalently with the GO sheets at the expense of the oxygen groups present on the GO surface. The GO template was shown to be fully removable through thermal treatment without affecting the nanoflake morphology of the pure SiOx-material, providing a methodology for large-scale preparation of SiOx-based 2D nanosheets with nearly identical dimensions as the GO template. The formation of SiOx sheets using a GO template was investigated for two different silane precursors, (3-aminopropyl) triethoxysilane (APTES) and tetraethyl orthosilicate (TEOS), showing that both precursors were capable of accurately templating the graphene oxide template. Molecular modeling revealed that the choice of silane affected the number of layers coated on the GO sheets. Furthermore, rheological measurements showed that the relative viscosity was significantly affected by the specific surface area of the synthesized particles. The protocol used showed the ability to synthesize these types of nanoparticles using a common aqueous alcohol solvent, and yield larger amounts (∼1 g) of SiOx-sheets than what has been previously reported.
Subject headings
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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