Synthesis, characterization and applications of novel graphene-derived sorbents in separation techniques

• Grant number: 23/07159-7
• Support Opportunities: Regular Research Grants
• Start date: November 01, 2023
• End date: October 31, 2025
• Field of knowledge: Physical Sciences and Mathematics - Chemistry - Analytical Chemistry
• Principal Investigator: Fernando Mauro Lanças
• Grantee: Fernando Mauro Lanças
• Host Institution: Instituto de Química de São Carlos (IQSC). Universidade de São Paulo (USP). São Carlos , SP, Brazil

Abstract

Graphene-derived materials are considered emergent materials in various areas of Analytical Chemistry. Graphene, an allotropic variety of carbon, presents a planar network of electrons in its chemical structure that participates into À -bonds, being the main responsible for the graphene-based sorbent interactions with several compounds belonging to different chemical classes. These characteristics made these materials selective, particularly to molecules having aromatic groups. That behavior is also present in graphene-derived materials such as graphene oxide (GO), which also presents oxygen-containing groups on their surface, allowing the sorption of other materials having different functional groups. Furthermore, the addition of aliphatic groups - such as octadecyl (C18), hydrophilic groups, hydrophobic and or zwitterionic groups as in the case of some ionic liquids (ILs) - to the graphite sheets makes those sorbents even more attractive to be used in a broader range of chemical functionalities. Another modification involves the fixation of graphene-derived materials into silica particles' surface (forming SiGO), making their packing easier into extraction cartridges, analytical chromatographic columns, and other devices. This project aims to expand the current information about graphene-derived materials used as extraction phases in sample preparation micro techniques, both offline and online, and as stationary phases in capillary liquid chromatography. A particular emphasis will be on end-capped functionalized SiGO phases containing C18 groups (producing SiGO-C18) and novel ionic liquids (ILs) as GO modifiers. (AU)

Scientific publications

(6)

(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)

MARTINS, RAFAEL OLIVEIRA; BORSATTO, JOAO VICTOR BASOLLI; WILL, CAMILA; LANCAS, FERNANDO MAURO. Advancements in Microextraction by Packed Sorbent: Insights into Sorbent Phases and Automation Strategies. SEPARATIONS, v. 12, n. 1, p. 30-pg., 2025-01-01. (23/15675-5, 23/07159-7)

MARTINS, RAFAEL O.; LANCAS, FERNANDO M.. Microextraction by packed sorbent: Introducing a novel hybrid silica-based chitosan-graphene oxide biosorbent for the evaluation of pesticides and antibiotics in food matrices. ADVANCES IN SAMPLE PREPARATION, v. 12, p. 12-pg., 2024-10-01. (17/21984-0, 23/07159-7, 23/15675-5, 17/21985-6, 17/02147-0)

MARTINS, RAFAEL OLIVEIRA; CARDOSO, ALESSANDRA TIMOTEO; BORSATTO, JOAO VICTOR; LANCAS, FERNANDO MAURO. Advances in green carbon-based biosorbents: From conventional to miniaturized sample preparation strategies. Talanta, v. 283, p. 19-pg., 2025-02-01. (23/07159-7, 23/15675-5, 23/06258-1)

CARDOSO, ALESSANDRA TIMOTEO; MARTINS, RAFAEL OLIVEIRA; LANCAS, FERNANDO MAURO. Advances and Applications of Hybrid Graphene-Based Materials as Sorbents for Solid Phase Microextraction Techniques. Molecules, v. 29, n. 15, p. 28-pg., 2024-08-01. (23/07159-7, 23/15675-5, 23/06258-1)

CARDOSO, ALESSANDRA TIMOTEO; LANCAS, FERNANDO MAURO. Graphene oxide functionalized with hydrophilic ionic liquid as stir bar coating: Sorptive extraction of selected triazines in grape juice samples. Analytica Chimica Acta, v. 1343, p. 15-pg., 2025-01-27. (23/06258-1, 23/07159-7)

RODRIGUES, TAIS BETONI; CUNHA, RICARDO LEAL; BARCI, PAULO EMILIO PEREIRA; SANTOS-NETO, ALVARO JOSE; LANCAS, FERNANDO MAURO. Analysis of human biological samples using porous graphitic carbon columns and liquid chromatography-mass spectrometry: a review. ANALYTICAL AND BIOANALYTICAL CHEMISTRY, v. 416, n. 24, p. 21-pg., 2024-08-19. (17/02147-0, 23/07159-7, 22/07258-2)