Micro Scalable Graphene Oxide Productions Using Controlled Parameters in Bench Reactor

Author(s):Show less -

Andrade, Carolina S. ^[1] ; Godoy, Anna Paula S. ^[1] ; Benega, Marcos Antonio Gimenes ^[1] ; Andrade, Ricardo J. E. ^[1] ; Andrade, Rafael Cardoso ^[2] ; Silva, Wellington Marcos ^[3] ; Cremonezzi, Josue Marciano de Oliveira ^[1] ; Macedo, Waldemar Augusto de Almeida ^[4] ; Gastelois, Pedro Lana ^[4] ; Ribeiro, Helio ^[2] ; Taha-Tijerina, Jaime ^{[5, 6]}

Affiliation

^[1] Univ Prebiteriana Mackenzie, MackGraphe Graphene & Nanomat Res Ctr, Rua Consolacao 896, BR-01302907 Sao Paulo - Brazil

^[2] Univ Prebiteriana Mackenzie, Escola Engn, Rua Consolacao 896, BR-01302907 Sao Paulo - Brazil

^[3] Univ Fed Minas Gerais UFMG, Dept Quim, Ave Presidente Antonio Carlos 6-627, BR-31270901 Belo Horizonte, MG - Brazil

^[4] Ctr Dev Tecnol Nucl CDTN, Ave Presidente Antonio Carlos 6-627, BR-31270901 Belo Horizonte, MG - Brazil

^[5] Univ Monterrey, Dept Ingn, Av Ignacio Morones Prieto 4500 Pte, San Pedro Garza Garcia 66238 - Mexico

^[6] Univ Texas Rio Grande Valley, Dept Mfg & Ind Engn, Brownsville, TX 78520 - USA

• Document type: Journal article
• Source: NANOMATERIALS; v. 11, n. 8 AUG 2021.
• Web of Science Citations: 0

Abstract

The detailed study of graphene oxide (GO) synthesis by changing the graphite/oxidizing reagents mass ratios (mG/mROxi), provided GO nanosheets production with good yield, structural quality, and process savings. Three initial samples containing different amounts of graphite (3.0 g, 4.5 g, and 6.0 g) were produced using a bench reactor under strictly controlled conditions to guarantee the process reproducibility. The produced samples were analyzed by Raman spectroscopy, atomic force microscopy (AFM), x-ray diffraction (XDR), X-ray photoelectron spectroscopy (XPS), Fourier-transform infrared spectroscopy (FTIR) and thermogravimetry (TGA) techniques. The results showed that the major GO product comprised of nanosheets containing between 1-5 layers, with lateral size up to 1.8 mu m. Therefore, it was possible to produce different batches of graphene oxide with desirable physicochemical characteristics, keeping the amount of oxidizing reagent unchanged. The use of different proportions (mG/mROxi) is an important strategy that provides to produce GO nanostructures with high structural quality and scale-up, which can be well adapted in medium-sized bench reactor. (AU)

• FAPESP's process: 12/50259-8 - Graphene: photonics and opto-electronics: UPM-NUS collaboration
• Grantee: Antonio Helio de Castro Neto
• Support Opportunities: Research Projects - SPEC Program
• FAPESP's process: 17/07244-3 - Graphene-based polymer nanocomposites for application in optical communications
• Grantee: Leice Gonçalves Amurin
• Support Opportunities: Scholarships in Brazil - Post-Doctoral