Microwave-assisted synthesis of ceria nanoparticles on carbon nanotubes and their dye-removal assesstment

Journal of Materials Research and Technology

Ricardo Rangel¹  Sergio Jiménez-Sandoval²  Lourdes Bazán-Díaz³  Julián López-Tinoco⁴  Javier Lara-Romero⁴  José Apolinar-Cortés⁴  Francisco Paraguay-Delgado⁴  Rubén Mendoza-Cruz⁵ 

[1] Corresponding author.;Centro de Investigación en Materiales Avanzados, Unidad Chihuahua, Miguel de Cervantes Saavedra No. 120, Chihuahua, C.P. 31136, Mexico;Centro de Investigación y de Estudios Avanzados Del IPN, Unidad Querétaro, Libramiento Norponiente No. 2000, Querétaro, C.P. 79230, Mexico;Facultad de Ingeniería Química, Universidad Michoacana de San Nicolás de Hidalgo, Avenida Francisco J. Múgica S/N, Edificio V1, Ciudad Universitaria, Morelia, Michoacán, C.P. 58060, Mexico;Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Circuito Exterior S/N, Circuito de La Investigación Científica, Ciudad Universitaria, CDMX, C.P. 04510, Mexico;

关键词: Carbon nanotubes;    Dye adsorption;    Nanoparticles;    Ceria;    Microwaves;   

DOI  :  

来源: DOAJ

【 摘 要 】

We report the synthesis of ceria nanoparticles supported on multiwalled carbon nanotubes via a microwave-assisted method. The resulting composites were characterized by HRTEM, XRD, TGA and Raman spectroscopy. This method enabled the growth of ceria nanoparticles of ~1.4 nm homogeneously distributed on the surface of the carbon nanotubes. The adsorption effectiveness of these materials was evaluated using methylene blue as a model molecule. The produced nanocomposites showed higher dye adsorption capability and removal percentage (62.1 mg/g, 95.3%) than the functionalized carbon nanotubes (37.1 mg/g, 56.7%). The experimental kinetic results were best fitted by the pseudo second-order model. The Langmuir isotherm model exhibited the best fit of the equilibrium adsorption data. Increasing the temperature increased the adsorption capacity of the composite. The ceria/multiwalled carbon nanotube composites show great potential to remove organic dyes from contaminated water.

【 授权许可】

Unknown