TY - JOUR
T1 - Effect of functional groups in the structure of carbon nanotubes to adsortion grade of cadmium ions
AU - Torres-Santillan, E.
AU - Capula-Colindres, S.
AU - Reza-San German, C. M.
AU - Cayetano-Castro, N.
AU - Villagarcia-Chavez, E.
N1 - Publisher Copyright:
© 2018, Universidad Autonoma Metropolitana Iztapalapa. All rights reserved.
PY - 2018/9/1
Y1 - 2018/9/1
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 - Functionalization
KW - Metal
UR - http://www.scopus.com/inward/record.url?scp=85053003518&partnerID=8YFLogxK
U2 - 10.24275/uam/izt/dcbi/revmexingquim/2018v17n3/Torres
DO - 10.24275/uam/izt/dcbi/revmexingquim/2018v17n3/Torres
M3 - Artículo
AN - SCOPUS:85053003518
SN - 1665-2738
VL - 17
SP - 955
EP - 961
JO - Revista Mexicana de Ingeniera Quimica
JF - Revista Mexicana de Ingeniera Quimica
IS - 3
ER -