Synthesis of mesoporous P-doped carbon and its application in propranolol drug removal: Characterization, kinetics and isothermal studies

Autor(es)

Paixao, Gustavo Rocha ; Camparotto, Natalia Gabriele ; Briao, Giani de Vargas ; Oliveira, Rafael de Lima ; Colmenares, Juan Carlos ; Prediger, Patricia ; Vieira, Melissa Gurgel Adeodato

• Tipo de documento: Artigo Científico
• Fonte: CHEMICAL ENGINEERING RESEARCH & DESIGN; v. 187, p. 15-pg., 2022-11-01.

Resumo

A novel P-doped mesoporous carbon (PMC) was prepared from sucrose, a natural source, using a hard template based on silica nanoparticles. The new PMC was characterized by SEM, TEM, XRD, N-2 physisorption, Raman, XPS, and FT-IR. The analysis confirmed the tridimensional structure of PMC, which showed a high surface area of 830 m2.g(-1) and a pore volume of 1.4 cm3.g(-1). XPS analysis determined the phosphorus content of 4.1 %, mainly due to the functional groups of C-3-P]O and C-P(O)(OH)(2)/C-2-P(O)(OH). The new material was used to remove the drug propranolol (PRO) from water. PMC could remove PRO in 10 min, achieving a high removal capacity of 287 mg.g(-1), corresponding to 99 % of removal efficiency. The kinetic and equilibrium data were best described by pseudo -second order kinetic and BET isothermal models, suggesting multilayer adsorption where the first layer of PRO molecules strongly binds to the PMC surface, and subsequent layers are formed over the first one. The proposed mechanism of PRO adsorption is based on the chemisorption in C-P(O)(OH)(2)/C-2-P(O)(OH) acidic groups of PMC, physisorption through hydrogen-bonding, electrostatic and pi - pi interactions. PMC has proven to be a promising adsorbent for the uptake of propranolol from water. (C) 2022 Institution of Chemical Engineers. Published by Elsevier Ltd. All rights reserved. (AU)

• Processo FAPESP: 19/07822-2 - Síntese de novos nanoadsorventes, suas caracterizações e aplicações na adsorção de poluentes em águas
• Beneficiário: PATRICIA PREDIGER
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 19/11353-8 - Centro Brasileiro de Pesquisa em Água (BWRC)
• Beneficiário: Lauro Tatsuo Kubota
• Modalidade de apoio: Auxílio à Pesquisa - Programa Centros de Pesquisa em Engenharia
• Processo FAPESP: 17/18236-1 - Recuperação de íons metálicos nobres e íons terras-raras presentes em soluções aquosas por bioadsorção em partículas de blenda de sericina e alginato
• Beneficiário: Melissa Gurgel Adeodato Vieira
• Modalidade de apoio: Auxílio à Pesquisa - Regular