TY - JOUR
T1 - Integration of carbon dots and polyaniline with TiO2 nanoparticles
T2 - Substantially enhanced photocatalytic activity to removal various pollutants under visible light
AU - Feizpoor, Solmaz
AU - Habibi-Yangjeh, Aziz
AU - Yubuta, Kunio
N1 - Funding Information:
The financial support ofthis work by University of Mohaghegh Ardabili-Iran is acknowledged.
Publisher Copyright:
© 2018 Elsevier B.V.
PY - 2018/12/1
Y1 - 2018/12/1
N2 - In this study, ternary photocatalysts were fabricated through integration of carbon dots (CDs) and polyaniline (PANI) with TiO2 nanoparticles by a facile route. The photocatalysts were characterized by XRD, SEM, HRTEM, EDX, BET, XPS, FT-IR, UV–vis DRS, and PL instruments. Among the photocatalysts, the TiO2/CDs/PANI (20%) nanocomposite exhibited much higher photocatalytic performance for removal of RhB, MO, MB, and fuchsine in comparison with the TiO2, TiO2/CDs, and TiO2/PANI (20%) photocatalysts under visible light. The degradation rate constant of RhB by TiO2/CDs/PANI (20%) nanocomposite was 481 × 10−4 min−1, which is almost 36.5 and 2.6 times more than those of the TiO2 and TiO2/CDs photocatalysts, respectively. It was confirmed that [rad]O2 − played predominant role in RhB degradation. Finally, the mechanism for enhanced photocatalytic activity was also discussed. The improved visible-light photocatalytic performance was related to substantial absorption of visible light, diminished recombination of the charge carriers, and enhanced specific surface area.
AB - In this study, ternary photocatalysts were fabricated through integration of carbon dots (CDs) and polyaniline (PANI) with TiO2 nanoparticles by a facile route. The photocatalysts were characterized by XRD, SEM, HRTEM, EDX, BET, XPS, FT-IR, UV–vis DRS, and PL instruments. Among the photocatalysts, the TiO2/CDs/PANI (20%) nanocomposite exhibited much higher photocatalytic performance for removal of RhB, MO, MB, and fuchsine in comparison with the TiO2, TiO2/CDs, and TiO2/PANI (20%) photocatalysts under visible light. The degradation rate constant of RhB by TiO2/CDs/PANI (20%) nanocomposite was 481 × 10−4 min−1, which is almost 36.5 and 2.6 times more than those of the TiO2 and TiO2/CDs photocatalysts, respectively. It was confirmed that [rad]O2 − played predominant role in RhB degradation. Finally, the mechanism for enhanced photocatalytic activity was also discussed. The improved visible-light photocatalytic performance was related to substantial absorption of visible light, diminished recombination of the charge carriers, and enhanced specific surface area.
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U2 - 10.1016/j.jphotochem.2018.08.017
DO - 10.1016/j.jphotochem.2018.08.017
M3 - Article
AN - SCOPUS:85051941088
SN - 1010-6030
VL - 367
SP - 94
EP - 104
JO - Journal of Photochemistry and Photobiology A: Chemistry
JF - Journal of Photochemistry and Photobiology A: Chemistry
ER -