New Composites LnBDC@AC and CB[6]@AC: From Design toward Selective Adsorption of Methylene Blue or Methyl Orange.

Autor: Santos GC; Departamento de Química Fundamental, Universidade Federal de Pernambuco, Recife, Pernambuco, Brazil., Barros AL; Departamento de Química Fundamental, Universidade Federal de Pernambuco, Recife, Pernambuco, Brazil., de Oliveira CA; Departamento de Química Fundamental, Universidade Federal de Pernambuco, Recife, Pernambuco, Brazil., da Luz LL; Departamento de Química Fundamental, Universidade Federal de Pernambuco, Recife, Pernambuco, Brazil., da Silva FF; Departamento de Química, Universidade Federal da Paraíba, João Pessoa, Paraíba, Brazil., Demets GJ; Departamento de Química, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brazil., Alves Júnior S; Departamento de Química Fundamental, Universidade Federal de Pernambuco, Recife, Pernambuco, Brazil.
Jazyk: angličtina
Zdroj: PloS one [PLoS One] 2017 Jan 20; Vol. 12 (1), pp. e0170026. Date of Electronic Publication: 2017 Jan 20 (Print Publication: 2017).
DOI: 10.1371/journal.pone.0170026
Abstrakt: New porous composites LnBDC@AC (AC = Activated carbon, Ln = Eu and Gd and BDC = 1,4-benzenedicaboxylate) and CB[6]@AC (CB[6] = Cucurbit[6]uril) were obtained using hydrothermal route. The LnBDC and CB[B] are located inside the pore of the carbon materials as was observed in SEM-EDS, XRPD and FT-IR analysis. Porosimetry analysis showed values typically between AC and LnBDC material, with pore size and surface area, respectively, 29,56 Å and 353.98 m2g-1 for LnBDC@AC and 35,53 Å and 353.98 m2g-1 for CB[6]@AC. Both materials showed good absorptive capacity of metil orange (MO) and methylene blue (MB) with selectivity as a function of pH. For acid pH, both materials present selectivity by MB and alkaline pH for MO, with notable performance for CB[6]@AC. Additionally, europium luminescence was used as structural probe to investigate the coordination environment of Eu3+ ions in the EuBDC@AC composite after adsorption experiment.
Competing Interests: The authors have declared that no competing interests exist.
Databáze: MEDLINE
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