TY - JOUR
T1 - Oxygen-rich TiO 2 decorated with C-Dots
T2 - Highly efficient visible-light-responsive photocatalysts in degradations of different contaminants
AU - Feizpoor, Solmaz
AU - Habibi-Yangjeh, Aziz
AU - Ahadzadeh, Iraj
AU - Yubuta, Kunio
N1 - Funding Information:
The authors are very thankful for the financial support from University of Mohaghegh Ardabili , Iran.
Publisher Copyright:
© 2019 The Society of Powder Technology Japan
PY - 2019/6
Y1 - 2019/6
N2 - Providing novel photocatalysts with high photocatalytic efficiency is of great significance. In the present work, hydrogen peroxide and carbon dots (C-Dots) were utilized to enhance the photocatalytic performance of TiO 2 under visible light. The fabricated TiO 2 -peroxo/C-Dots photocatalysts were analyzed by XRD, HRTEM, SEM, EDX, BET, FT-IR, XPS, PL, UV–Vis DRS, EIS, and photocurrent density. Photocatalytic abilities of the nanocomposites were evaluated by photocatalytic removal of RhB, MO, MB, fuchsine, and Cr (VI) upon visible-light illumination. The results demonstrated that the binary nanocomposites exhibited remarkably enhanced photocatalytic activity compared with the TiO 2 and TiO 2 -peroxo photocatalysts. The best photocatalytic performance was obtained using 0.75 mL of C-Dots, which was approximately 79.2, 17.1, 71.4, and 40.5 times higher than the pure TiO 2 for degradations of RhB, MO, MB, and fuchsine, respectively. Furthermore, the TiO 2 -peroxo/C-Dots nanocomposites exhibited high stability in consecutive photocatalytic processes. Based on the results, the TiO 2 -peroxo/C-Dots photocatalyst is expected to become a promising photocatalyst for practical applications in water purification.
AB - Providing novel photocatalysts with high photocatalytic efficiency is of great significance. In the present work, hydrogen peroxide and carbon dots (C-Dots) were utilized to enhance the photocatalytic performance of TiO 2 under visible light. The fabricated TiO 2 -peroxo/C-Dots photocatalysts were analyzed by XRD, HRTEM, SEM, EDX, BET, FT-IR, XPS, PL, UV–Vis DRS, EIS, and photocurrent density. Photocatalytic abilities of the nanocomposites were evaluated by photocatalytic removal of RhB, MO, MB, fuchsine, and Cr (VI) upon visible-light illumination. The results demonstrated that the binary nanocomposites exhibited remarkably enhanced photocatalytic activity compared with the TiO 2 and TiO 2 -peroxo photocatalysts. The best photocatalytic performance was obtained using 0.75 mL of C-Dots, which was approximately 79.2, 17.1, 71.4, and 40.5 times higher than the pure TiO 2 for degradations of RhB, MO, MB, and fuchsine, respectively. Furthermore, the TiO 2 -peroxo/C-Dots nanocomposites exhibited high stability in consecutive photocatalytic processes. Based on the results, the TiO 2 -peroxo/C-Dots photocatalyst is expected to become a promising photocatalyst for practical applications in water purification.
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U2 - 10.1016/j.apt.2019.03.014
DO - 10.1016/j.apt.2019.03.014
M3 - Article
AN - SCOPUS:85063274143
SN - 0921-8831
VL - 30
SP - 1183
EP - 1196
JO - Advanced Powder Technology
JF - Advanced Powder Technology
IS - 6
ER -