TY - JOUR
T1 - Efecto de los grupos funcionales en la estructura de los nanotubos de carbono en el grado de adsorción de iones cadmio
AU - Torres Santillán, Esther
AU - Capula Colindres, Selene Irais
AU - Reza-San Germán, Carmen Magdalena
AU - Cayetano Castro, Nicolás
AU - Villagarcía Chavez, Ezequiel
PY - 2018/3/23
Y1 - 2018/3/23
N2 - In the present work, it was studied the effect over the adsorption capacity of Cd(II) ions in carbon nanotubes (NTC) by adding several functional organic groups on its structure as: -OH, -C=O, -CH and -COOH, using as precursors: sulfuric acid, nitric acid, hydrogen peroxide, methanol, acetic acid and acetone. The modificated nanotubes (NTC’f) were characterized by transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray diffraction (XRD) and Fourier transform infrared (FTIR) to reveal the modified morphology and structure. In order to evaluate the adsorption performance of NTC’f for Cd(II) ions, a UV-Vis spectrophotometer was used. Several parameters were evaluated: Cd(II) ions concentration, solution pH and samples exposure time to NTC’f. Finally, a relationship between structure and functionality of the NTC’f and the Cd(II) ions adsoption was found, where the funtionalized nanotubes with -COOH and -OH exhibited a higher adsorption rate at room temperature, pH= 6, exposure time of 72 hours, where the NTC’f were able to absorb a 100% of Cd(II) ions in a 50 mg.g- 1 ratio.
AB - In the present work, it was studied the effect over the adsorption capacity of Cd(II) ions in carbon nanotubes (NTC) by adding several functional organic groups on its structure as: -OH, -C=O, -CH and -COOH, using as precursors: sulfuric acid, nitric acid, hydrogen peroxide, methanol, acetic acid and acetone. The modificated nanotubes (NTC’f) were characterized by transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray diffraction (XRD) and Fourier transform infrared (FTIR) to reveal the modified morphology and structure. In order to evaluate the adsorption performance of NTC’f for Cd(II) ions, a UV-Vis spectrophotometer was used. Several parameters were evaluated: Cd(II) ions concentration, solution pH and samples exposure time to NTC’f. Finally, a relationship between structure and functionality of the NTC’f and the Cd(II) ions adsoption was found, where the funtionalized nanotubes with -COOH and -OH exhibited a higher adsorption rate at room temperature, pH= 6, exposure time of 72 hours, where the NTC’f were able to absorb a 100% of Cd(II) ions in a 50 mg.g- 1 ratio.
KW - Adsorption
KW - Cadmium ions
KW - Carbon nanotubes
KW - Funtionalization
KW - Metal
M3 - Artículo
SN - 1665-2738
VL - 17
SP - 955
EP - 961
JO - Revista Mexicana de Ingeniera Quimica
JF - Revista Mexicana de Ingeniera Quimica
IS - 3
ER -