TY - JOUR
T1 - Microwave-assisted acid functionalized carbon nanofibers decorated with Mn doped TNTs nanocomposites
T2 - Efficient contenders for lithium adsorption and recovery from aqueous media
AU - Kamran, Urooj
AU - Park, Soo Jin
N1 - Publisher Copyright:
© 2020 The Korean Society of Industrial and Engineering Chemistry
PY - 2020/12/25
Y1 - 2020/12/25
N2 - The industrial need for lithium metal is foreseen to be stepping up in the near future. Herein, we have successfully fabricated microwave-assisted, acid-functionalized carbon nanofibers (ACNFs) decorated with manganese-doped titanium nanotubes (TNT-Mnx), a novel nanocomposite for Li+ adsorption. Nanocomposites (ACNF-TNT-Mn0.5, ACNF-TNT-Mn1, and ACNF-TNT-Mn1.5) were prepared by different strategies: oxidizing acidic treatment, alkaline hydrothermal technique, and a modified conventional Murray approach. The distinctive Li+ adsorption parameters were demonstrated: pH (14), nanocomposite dose (0.075 g), and contact time (180 min) by batch adsorption tests. The nanocomposite (ACNF-TNT-Mn1) at optimized adsorption condition was capable of showing Li+ adsorption of 52 mg g−1, which is ≈ 10.4 and 4 folds higher than pristine ACNF and TNT-Mnx, respectively. The improved Li+ adsorption can be attributed to the combined effect of Mn2+ species in TNT-Mnx and large surface area of ACNF within a nanocomposite. The adsorbed Li+ ions from nanocomposites were easily recovered (99%). Besides, the nanocomposites show selective Li+ adsorption and stability over several adsorption tests. Furthermore, the doping of Mn2+ on TNT within nanocomposite leads to the improvement in Li+ uptakes. By considering these efficient properties, the fabricated nanocomposites can be applicable on a large scale as a potential adsorbent for Li+ recovery.
AB - The industrial need for lithium metal is foreseen to be stepping up in the near future. Herein, we have successfully fabricated microwave-assisted, acid-functionalized carbon nanofibers (ACNFs) decorated with manganese-doped titanium nanotubes (TNT-Mnx), a novel nanocomposite for Li+ adsorption. Nanocomposites (ACNF-TNT-Mn0.5, ACNF-TNT-Mn1, and ACNF-TNT-Mn1.5) were prepared by different strategies: oxidizing acidic treatment, alkaline hydrothermal technique, and a modified conventional Murray approach. The distinctive Li+ adsorption parameters were demonstrated: pH (14), nanocomposite dose (0.075 g), and contact time (180 min) by batch adsorption tests. The nanocomposite (ACNF-TNT-Mn1) at optimized adsorption condition was capable of showing Li+ adsorption of 52 mg g−1, which is ≈ 10.4 and 4 folds higher than pristine ACNF and TNT-Mnx, respectively. The improved Li+ adsorption can be attributed to the combined effect of Mn2+ species in TNT-Mnx and large surface area of ACNF within a nanocomposite. The adsorbed Li+ ions from nanocomposites were easily recovered (99%). Besides, the nanocomposites show selective Li+ adsorption and stability over several adsorption tests. Furthermore, the doping of Mn2+ on TNT within nanocomposite leads to the improvement in Li+ uptakes. By considering these efficient properties, the fabricated nanocomposites can be applicable on a large scale as a potential adsorbent for Li+ recovery.
KW - Carbon nanofiber
KW - Lithium adsorption
KW - Manganese-doped titanate nanotubes
KW - Nanocomposite
KW - Recovery
UR - https://www.scopus.com/pages/publications/85092227458
U2 - 10.1016/j.jiec.2020.09.014
DO - 10.1016/j.jiec.2020.09.014
M3 - Article
AN - SCOPUS:85092227458
SN - 1226-086X
VL - 92
SP - 263
EP - 277
JO - Journal of Industrial and Engineering Chemistry
JF - Journal of Industrial and Engineering Chemistry
ER -