TY - JOUR
T1 - Facile preparation of CuO-Gd2Ti2O7 using Acmella uliginosa leaf extract for photocatalytic degradation of malachite green
AU - Halomoan, Ivan
AU - Yulizar, Yoki
AU - Surya, Rizki Marcony
AU - Apriandanu, Dewangga Oky Bagus
N1 - Funding Information:
This research was funded by international publication assistance program Q1 (PPI Q1) 2021 from the Universitas Indonesia through the directorate of research and development, Universitas Indonesia no. NKB-585/UN2.RST/HKP.05.00/2021.
Publisher Copyright:
© 2022 Elsevier Ltd
PY - 2022/6
Y1 - 2022/6
N2 - CuO-Gd2Ti2O7 has been prepared in a two-phase system of polar precursor solution and non-polar hexane fraction of Acmella uliginosa leaf extract (AUE). The secondary metabolites in AUE have an essential role in the synthesis of CuO-Gd2Ti2O7. The optical bandgap value for CuO-Gd2Ti2O7 plummeted from 3.68 to 1.78 eV, compared to Gd2Ti2O7. The photocatalytic activity was investigated to degrade malachite green (MG) under visible light illumination. As a result, CuO-Gd2Ti2O7 showed the MG degradation percentage of 88.60% after 90 min of illumination, which was 1.9 times higher than the MG degradation percentage over Gd2Ti2O7. The improved photocatalytic activity could be ascribed to the narrower optical bandgap Gd2Ti2O7 after being decorated by CuO, which effectively works in the visible region. This research suggests a novel method to prepare CuO-Gd2Ti2O7 as a promising candidate with good photocatalytic activity for the degradation of malachite green under visible light illumination.
AB - CuO-Gd2Ti2O7 has been prepared in a two-phase system of polar precursor solution and non-polar hexane fraction of Acmella uliginosa leaf extract (AUE). The secondary metabolites in AUE have an essential role in the synthesis of CuO-Gd2Ti2O7. The optical bandgap value for CuO-Gd2Ti2O7 plummeted from 3.68 to 1.78 eV, compared to Gd2Ti2O7. The photocatalytic activity was investigated to degrade malachite green (MG) under visible light illumination. As a result, CuO-Gd2Ti2O7 showed the MG degradation percentage of 88.60% after 90 min of illumination, which was 1.9 times higher than the MG degradation percentage over Gd2Ti2O7. The improved photocatalytic activity could be ascribed to the narrower optical bandgap Gd2Ti2O7 after being decorated by CuO, which effectively works in the visible region. This research suggests a novel method to prepare CuO-Gd2Ti2O7 as a promising candidate with good photocatalytic activity for the degradation of malachite green under visible light illumination.
KW - Acmella uliginosa
KW - CuO-GdTiO
KW - Photocatalytic activity
KW - Two-phase system
KW - Visible light illumination
UR - http://www.scopus.com/inward/record.url?scp=85123056278&partnerID=8YFLogxK
U2 - 10.1016/j.materresbull.2021.111726
DO - 10.1016/j.materresbull.2021.111726
M3 - Article
AN - SCOPUS:85123056278
SN - 0025-5408
VL - 150
JO - Materials Research Bulletin
JF - Materials Research Bulletin
M1 - 111726
ER -