Banca de QUALIFICAÇÃO: MARIA DEL ROSARIO DIAZGRANADOS JIMENEZ

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : MARIA DEL ROSARIO DIAZGRANADOS JIMENEZ
DATE: 07/07/2023
TIME: 14:00
LOCAL: DCNAT - UFSJ
TITLE:

Graphitic Carbon Nitride doped with Sulfur: Preparation, Experimental and Theoretical Characterization

KEY WORDS:

g-C₃N_4, Nanosheets, Sulfur Doping, DFT.

PAGES: 30
BIG AREA: Ciências Exatas e da Terra
AREA: Química
SUBÁREA: Química Inorgânica
SPECIALTY: Físico Química Inorgânica
SUMMARY:

g-C3N4 is a material that is becoming popular in the field of photocatalysis due to its properties. In this work, g-C3N4 nanosheets were synthesized with and without sulfur doping. Five samples were produced with different doping proportions, using urea and thiourea as precursors, in the following proportions: 100:0, 70:30, 50:50, 30:70 and 0:100%, respectively. This approach made it possible to obtain low-cost materials through a simple two-step synthesis method. In the first step, pyrolysis of the precursors took place, followed by the second step of ultrasonic liquid exfoliation to produce the nanosheets. Samples were characterized using experimental methods such as UV-vis, PL, lifetime, PLQY, XRD and FT-IR. Furthermore, the Density Functional Theory (DFT) was employed for the theoretical characterization of these materials.

BANKING MEMBERS:
Interno - 1677150 - ARNALDO CESAR PEREIRA
Externo à Instituição - HELIO ANDERSON DUARTE - UFMG