Production and characterization of hybrid materials based on graphene/conductive polymer and applications in electronic tongue type chemical sensors

• Grant number: 15/13140-0
• Support type: Scholarships in Brazil - Master
• Effective date (Start): September 01, 2015
• Effective date (End): August 31, 2017
• Field of knowledge: Engineering - Materials and Metallurgical Engineering
• Principal Investigator: Daniel Souza Corrêa
• Grantee: Murilo Henrique Moreira Facure
• Home Institution: Embrapa Instrumentação Agropecuária. Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA). Ministério da Agricultura, Pecuária e Abastecimento (Brasil). São Carlos , SP, Brazil

Abstract

Graphene is an allotropic form of carbon recently discovered that owns interesting features as high ratio surface area/volume, high electrical and thermal conductivity, high flexibility and mechanical strength and chemical stability. Its characteristics boost an increasing number of researches on this material and its possible technological applications. One of the possible applications of graphene is a sensitive layer in chemical sensors to detect a variety of chemical and biological analytes. Chemical sensors find applications in various sectors, including agriculture, which demand technological solutions to increase production of food, fiber and energy with mitigation of environmental impacts. The use of chemical sensors helps in optimizing the available resources and can monitor residues released into the environment due to anthropogenic inputs. In this project, we propose the use of graphene associated with polyelectrolytes, conductive polymers and other organic materials to compose different architectures of an electronic tongue in order to modify the responses of their sensory units. The use of chemically modified graphene will aim to study its effect on the sensitivity and detection limit of the sensors in relation to the detection of substances such as commercial pesticides. (AU)

Scientific publications

(4)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

PAULA, KELLY T.; GAAL, GABRIEL; ALMEIDA, G. F. B.; ANDRADE, M. B.; FACURE, MURILO H. M.; CORREA, DANIEL S.; RIUL JR, ANTONIO; RODRIGUES, VARLEI; MENDONCA, CLEBER R. Femtosecond laser micromachining of polylactic acid/graphene composites for designing interdigitated microelectrodes for sensor applications. OPTICS AND LASER TECHNOLOGY, v. 101, p. 74-79, MAY 2018. Web of Science Citations: 8.

MERCANTE, LUIZA A.; FACURE, MURILO H. M.; LOCILENTO, DANILO A.; SANFELICE, RAFAELA C.; MIGLIORINI, FERNANDA L.; MATTOSO, LUIZ H. C.; CORREA, DANIEL S. Solution blow spun PMMA nanofibers wrapped with reduced graphene oxide as an efficient dye adsorbent. NEW JOURNAL OF CHEMISTRY, v. 41, n. 17, p. 9087-9094, SEP 7 2017. Web of Science Citations: 8.

MERCANTE, LUIZA A.; FACURE, MURILO H. M.; SANFELICE, RAFAELA C.; MIGLIORINI, FERNANDA L.; MATTOSO, LUIZ H. C.; CORREA, DANIEL S. One-pot preparation of PEDOT:PSS-reduced graphene decorated with Au nanoparticles for enzymatic electrochemical sensing of H2O2. Applied Surface Science, v. 407, p. 162-170, JUN 15 2017. Web of Science Citations: 33.

FACURE, MURILO H. M.; MERCANTE, LUIZA A.; MATTOSO, LUIZ H. C.; CORREA, DANIEL S. Detection of trace levels of organophosphate pesticides using an electronic tongue based on graphene hybrid nanocomposites. Talanta, v. 167, p. 59-66, MAY 15 2017. Web of Science Citations: 41.