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Ultrasound-Assisted Surface Modification of MWCNT Using Organic Acids.
de León-Martínez, Patricia A; Sáenz-Galindo, Aidé; Ávila-Orta, Carlos A; Castañeda-Facio, Adalí O; Andrade-Guel, Marlene L; Sierra, Uriel; Alvarado-Tenorio, German; Bernal-Martínez, Juan.
Afiliação
  • de León-Martínez PA; Departamento de Ciencia y Tecnología de Polímeros, Facultad de Ciencias Químicas, Universidad Autónoma de Coahuila, Ingeniero José Cárdenas Valdez S/N, República, Saltillo, Coahuila C.P. 25280, Mexico.
  • Sáenz-Galindo A; Departamento de Ciencia y Tecnología de Polímeros, Facultad de Ciencias Químicas, Universidad Autónoma de Coahuila, Ingeniero José Cárdenas Valdez S/N, República, Saltillo, Coahuila C.P. 25280, Mexico.
  • Ávila-Orta CA; Departamento de Materiales Avanzados, Centro de Investigación en Química Aplicada (CIQA), Blvd. Enrique Reyna Hermosillo, San José de los Cerritos, Apdo.140, Saltillo, Coahuila 25294, Mexico.
  • Castañeda-Facio AO; Departamento de Ciencia y Tecnología de Polímeros, Facultad de Ciencias Químicas, Universidad Autónoma de Coahuila, Ingeniero José Cárdenas Valdez S/N, República, Saltillo, Coahuila C.P. 25280, Mexico.
  • Andrade-Guel ML; Departamento de Materiales Avanzados, Centro de Investigación en Química Aplicada (CIQA), Blvd. Enrique Reyna Hermosillo, San José de los Cerritos, Apdo.140, Saltillo, Coahuila 25294, Mexico.
  • Sierra U; Laboratorio Nacional de Materiales Grafénicos, Centro de Investigación en Química Aplicada (CIQA), Blvd. Enrique Reyna Hermosillo, San José de los Cerritos, Apdo.140, Saltillo, Coahuila 25294, Mexico.
  • Alvarado-Tenorio G; Departamento de Materiales Avanzados, Centro de Investigación en Química Aplicada (CIQA), Blvd. Enrique Reyna Hermosillo, San José de los Cerritos, Apdo.140, Saltillo, Coahuila 25294, Mexico.
  • Bernal-Martínez J; Unidad Médica Ojo Caliente, Cañada Honda 129, Ojo de Caliente 1, Aguascalientes C.P. 20196, Mexico.
Materials (Basel) ; 14(1)2020 Dec 25.
Article em En | MEDLINE | ID: mdl-33375743
In the present work, multiple-wall carbon nanotubes (MWCNTs) were surface modified in an environmentally friendly way, using low-frequency ultrasonic energy. This type of modification was carried-out using two different types of organic acids, citric acid (CA) and oxalic acid (OA). The modification of the MWCNTs was confirmed by Fourier-transform infrared spectroscopy (FTIR), where functional groups such as OH, C=O, O-C=O and COOH were detected. By means of Raman spectroscopy, an increase in carbon surface defects was found. On the other hand, using X-ray photoelectron spectroscopy (XPS), oxidation was evidenced on the surface of the modified MWCNT. In both Raman spectroscopy and XPS, the results indicate a greater modification when CA is used, possibly due to the fact that CA has a larger number of functional groups. MWCNT-CA showed good dispersion in methanol, while MWCNT-OA showed good stability in methanol and ethanol. Finally, a 20% removal of creatinine efficiency improvement was found with respect to the unmodified MWCNTs, while no improvement was found in the case of urea and uric acid.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Materials (Basel) Ano de publicação: 2020 Tipo de documento: Article País de afiliação: México País de publicação: Suíça

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Materials (Basel) Ano de publicação: 2020 Tipo de documento: Article País de afiliação: México País de publicação: Suíça