CONTROL OF GRAPHENE OXIDE REDUCTION AND ITS IMPACT ON THE OPERATION OF ELECTROLYTIC TRANSISTORS

Alessandro de Souza Mourato; Valeria Spolon Marangoni; Rafael Furlan de Oliveira

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Trabalho

Título do Trabalho

CONTROL OF GRAPHENE OXIDE REDUCTION AND ITS IMPACT ON THE OPERATION OF ELECTROLYTIC TRANSISTORS

Autores

Alessandro de Souza Mourato
Valeria Spolon Marangoni
Rafael Furlan de Oliveira

Modalidade

Pôster - resumo

Área temática

Dispositivos eletrônicos, eletroquímicos, supercapacitores e baterias

Data de Publicação

27/05/2026

País da Publicação

Brasil

Idioma da Publicação

pt-BR

Página do Trabalho

https://www.even3.com.br/anais/workshop-do-ineo-2026/1465033-control-of-graphene-oxide-reduction-and-its-impact-on-the-operation-of-electrolytic-transistors

ISBN

978-65-272-2467-9

Palavras-Chave

Electrolyte-gated transistors, Reduced Graphene Oxide, Sustainability

Resumo

Electrolyte-gated transistors (EGT) are devices that are widely used as biosensors due to their liquid medium operation inducing the formation of an electric double layer (EDL), which promotes typical low operational voltages and higher capacitances [1]. Reduced graphene oxide (rGO) has been used as EGT active layer (rGO-EGT) especially due to its excellent electrical conductivity and their oxygenated functional groups remained from the reduction process who gives to this material a rich surface chemistry which can be explored in functionalization processes [2]. The chemical reduction of graphene oxide (GO) through ascorbic acid (AA) is a more sustainable way to achieve these properties compared to hydrazine, a toxic reagent widely applied in this process [3]. In this work, we implemented and controlled the reduction process of GO into rGO through an in situ AA reduction and evaluated modifications of the typical rGO-EGT transfers curves. The influence of several parameters on the GO reduction such as pH, temperature and AA concentration was studied to establish the best scenario for the reduction through time. The rGO-EGT were obtained for 4 different reduction times, and their performance were studied. Correlating all studied parameters with the morphological and structural characteristics of rGO obtained through 4 different reduction times allows for deeper knowledge into the material's physical-chemistry and enhance EGT performance for future applications as biosensor. Acknowledgements: Instituto Nacional de Eletrônica Orgânica (INEO), Fundação de Amparo à Pesquisa do Estado de São Paulo – FAPESP - process nº 2025/27044-5, Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) - process 408449/2024-1, Centro Nacional de Energia em Energia e Materiais – CNPEM, Universidade Estadual Paulista “Julio de Mesquita Filho” – UNESP. References: [1] TORRICELLI, Fabrizio et al. Electrolyte-gated transistors for enhanced performance bioelectronics. Nature Reviews Methods Primers, v. 1, n. 1, p. 66, 2021. Available at: https://doi.org/10.1038/s43586-021-00065-8 [2] FURLAN DE OLIVEIRA, Rafael et al. Selective ion sensing in artificial sweat using low-cost reduced graphene oxide liquid-gated plastic transistors. Small, v. 18, n. 27, p. 2201861, 2022. Available at: https://doi.org/10.1002/smll.202201861 [3] FERNÁNDEZ-MERINO, María Jesús et al. Vitamin C is an ideal substitute for hydrazine in the reduction of graphene oxide suspensions. The Journal of Physical Chemistry C, v. 114, n. 14, p. 6426-6432, 2010. Available at: https://doi.org/10.1021/jp100603h

Título do Evento: Workshop do INEO 2026
Cidade do Evento: Nazaré Paulista
Título dos Anais do Evento: Anais do Workshop do INEO 2026
Nome da Editora: Even3
Meio de Divulgação: Meio Digital

Como citar

MOURATO, Alessandro de Souza; MARANGONI, Valeria Spolon; OLIVEIRA, Rafael Furlan de. CONTROL OF GRAPHENE OXIDE REDUCTION AND ITS IMPACT ON THE OPERATION OF ELECTROLYTIC TRANSISTORS.. In: Anais do Workshop do INEO 2026. Anais...Nazaré Paulista(SP) Hotel Estância Atibainha, 2026. Disponível em: https//www.even3.com.br/anais/workshop-do-ineo-2026/1465033-CONTROL-OF-GRAPHENE-OXIDE-REDUCTION-AND-ITS-IMPACT-ON-THE-OPERATION-OF-ELECTROLYTIC-TRANSISTORS. Acesso em: 11/08/2026