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Production and characterization of graphene quantum dots and their application in chemical sensors

Grant number: 17/10582-8
Support type:Scholarships in Brazil - Doctorate
Effective date (Start): January 01, 2019
Effective date (End): October 31, 2021
Field of knowledge:Engineering - Materials and Metallurgical Engineering - Nonmetallic Materials
Principal researcher: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


Graphene Quantum Dots (GQD) are graphene fragments consisting of one or a few layer shaving lateral dimensions smaller than 100 nm. GQD possess the appealing characteristics of graphene, viz. high surface area to volume ratio and high electrical conductivity, presenting also photoluminescence properties due to the quantum confinement and edge effects. The first synthesis of GQD was reported in the literature in 2010, which opens a wide window of opportunities to scientific and technological research on the synthesis, properties and application of this material. Due to the outstanding properties, GQD can be applied as a constituent material of hybrid sensors. Chemical sensors find applications in various sectors, including Agriculture, which demands technological solutions to increase food and energy production with mitigation of environmental impacts. The use of chemical sensors helps optimizing the available resources and can monitor residues released into the environment by anthropogenic influence. In this project, we propose the synthesis of GQD by simpler and novel routesand the development of sensors based on GQD for application in the detection of analytesof interest for agribusiness. The platforms will be investigated and characterized by distinct physical-chemical techniques aiming to evaluate the influence of GQD in the responses obtained by the sensors, in order to design sensors with improved sensitivity and detection limit. (AU)

Scientific publications (8)
(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)
SOUSA, LUIZ PAULO O.; FUKUSHIMA, KATIA L.; SCAGION, VANESSA P.; FACURE, MURILO H. M.; CORREA, DANIEL S.; OLIVEIRA, JULIANO E.; FERREIRA, DANTON D. A Principal Curves-Based Method for Electronic Tongue Data Analysis. IEEE SENSORS JOURNAL, v. 21, n. 4, p. 4957-4965, FEB 15 2021. Web of Science Citations: 0.
FUKUSHIMA, KATIA LUMI; SCAGION, VANESSA PRISCILA; MOREIRA FACURE, MURILO HENRIQUE; MARQUES PINHEIRO, ANA CARLA; CORREA, DANIEL SOUZA; NUNES, CLEITON ANTONIO; OLIVEIRA, JULIANO ELVIS. Development of an Electronic Tongue Based on a Nanocomposite for Discriminating Flavor Enhancers and Commercial Salts. IEEE SENSORS JOURNAL, v. 21, n. 2, p. 1250-1256, JAN 15 2021. Web of Science Citations: 1.
FACURE, MURILO H. M.; SCHNEIDER, RODRIGO; MERCANTE, LUIZA A.; CORREA, DANIEL S. A review on graphene quantum dots and their nanocomposites: from laboratory synthesis towards agricultural and environmental applications. ENVIRONMENTAL SCIENCE-NANO, v. 7, n. 12, p. 3710-3734, DEC 1 2020. Web of Science Citations: 0.
FACURE, MURILO HENRIQUE M.; SCHNEIDER, RODRIGO; DOS SANTOS, DANILO M.; CORREA, DANIEL S. Impedimetric electronic tongue based on molybdenum disulfide and graphene oxide for monitoring antibiotics in liquid media. Talanta, v. 217, SEP 2020. Web of Science Citations: 0.
MIGLIORINI, FERNANDA L.; SANFELICE, RAFAELA C.; MERCANTE, LUIZA A.; FACURE, MURILO H. M.; CORREA, DANIEL S. Electrochemical sensor based on polyamide 6/polypyrrole electrospun nanofibers coated with reduced graphene oxide for malathion pesticide detection. MATERIALS RESEARCH EXPRESS, v. 7, n. 1 JAN 2020. Web of Science Citations: 0.
PAULA, KELLY T.; SANTOS, V, MOLIRIA; FACURE, MURILO H. M.; ANDRADE, MARCELO B.; ARAUJO, FRANCINEIDE L.; CORREA, DANIEL S.; RIBEIRO, SIDNEY J. L.; MENDONCA, CLEBER R. Laser patterning and induced reduction of graphene oxide functionalized silk fibroin. Optical Materials, v. 99, JAN 2020. Web of Science Citations: 0.
ANDRE, RAFAELA S.; MERCANTE, LUIZA A.; FACURE, MURILO H. M.; MATTOSO, LUIZ H. C.; CORREA, DANIEL S. Enhanced and selective ammonia detection using In2O3/reduced graphene oxide hybrid nanofibers. Applied Surface Science, v. 473, p. 133-140, APR 15 2019. Web of Science Citations: 7.
TEODORO, KELCILENE B. R.; MIGLIORINI, FERNANDA L.; FACURE, MURILO H. M.; CORREA, DANIEL S. Conductive electrospun nanofibers containing cellulose nanowhiskers and reduced graphene oxide for the electrochemical detection of mercury(II). Carbohydrate Polymers, v. 207, p. 747-754, MAR 1 2019. Web of Science Citations: 7.

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