TY - JOUR
T1 - CuO-modified CoTiO3 via Catharanthus roseus extract
T2 - A novel nanocomposite with high photocatalytic activity
AU - Yulizar, Yoki
AU - Gunlazuardi, Jarnuzi
AU - Apriandanu, Dewangga Oky Bagus
AU - Syahfitri, Tri Wahyuni Widiyas
N1 - Publisher Copyright:
© 2020 Elsevier B.V.
PY - 2020/10/15
Y1 - 2020/10/15
N2 - In this study, novel CoTiO3-CuO were constructed by a facile sol-gel method via Catharanthus roseus leaf extract (CRE) as hydrolyzing and capping agents in nanocomposites preparation. The morphological analysis demonstrates that CuO was formed on the CoTiO3 surface. The degradation of methylene blue (MB) under visible light irradiation represents the photocatalytic activity of CoTiO3-CuO, which possessed a bandgap value of 1.7 eV. CuO-modified CoTiO3 exhibited higher photocatalytic activity with degradation percentage of 85% within 120 min than pure CoTiO3. The increased photocatalytic activity of CoTiO3-CuO was attributed to the heterojunction structure of nanocomposites, which leads to a slow rate of the photogenerated electrons-holes recombination. Additionally, CoTiO3-CuO nanocomposites displayed good stability catalysts after 4 recycles for MB degradation.
AB - In this study, novel CoTiO3-CuO were constructed by a facile sol-gel method via Catharanthus roseus leaf extract (CRE) as hydrolyzing and capping agents in nanocomposites preparation. The morphological analysis demonstrates that CuO was formed on the CoTiO3 surface. The degradation of methylene blue (MB) under visible light irradiation represents the photocatalytic activity of CoTiO3-CuO, which possessed a bandgap value of 1.7 eV. CuO-modified CoTiO3 exhibited higher photocatalytic activity with degradation percentage of 85% within 120 min than pure CoTiO3. The increased photocatalytic activity of CoTiO3-CuO was attributed to the heterojunction structure of nanocomposites, which leads to a slow rate of the photogenerated electrons-holes recombination. Additionally, CoTiO3-CuO nanocomposites displayed good stability catalysts after 4 recycles for MB degradation.
KW - C. roseus extract
KW - CoTiO-CuO nanocomposites
KW - MB degradation
KW - Photocatalytic activity
UR - http://www.scopus.com/inward/record.url?scp=85088876864&partnerID=8YFLogxK
U2 - 10.1016/j.matlet.2020.128349
DO - 10.1016/j.matlet.2020.128349
M3 - Article
AN - SCOPUS:85088876864
SN - 0167-577X
VL - 277
JO - Materials Letters
JF - Materials Letters
M1 - 128349
ER -