TY - JOUR
T1 - Synthesis of Er3+ loaded barium molybdate nanoparticles
T2 - A new approach for harvesting solar energy
AU - Adhikari, Rajesh
AU - Gyawali, Gobinda
AU - Kim, Tae Ho
AU - Sekino, Tohru
AU - Lee, Soo Wohn
N1 - Funding Information:
This research work has been supported by Global Research Program of the National Research Foundation of Korea (NRF) funded by Ministry of Education, Science and Technology (MEST), Korea (Grant no. 2010-00339 ).
Copyright:
Copyright 2012 Elsevier B.V., All rights reserved.
PY - 2013/1/15
Y1 - 2013/1/15
N2 - Er3+ loaded BaMoO4 was synthesized by the microwave assisted hydrothermal process. Loading of Er3+ ion shifted the absorption band of BaMoO4 towards the longer wavelength and enhanced the absorption of visible light in the solar spectrum. A shift of the absorption edge to the lower energy and four absorption bands located at 390, 489, 524 and, 654 nm attributed to the 4f transitions of 4I 11/2→2H9/2, 4I 15/2→ 4F7/2, 4I 15/2→ 2H11/2, and 4I 15/2→4F9/2; respectively, were observed during DRS analysis. Moreover, Er3+ ion acts as an upconversion luminescence agent by absorbing near infrared light (NIR) thereby emitting upconversion luminescence. Enhanced absorption of the solar energy has been utilized for the degradation of methylene blue dye as a test reaction. Therefore, this work provides a new approach to harvest solar energy for the activation of scheelite crystal structures.
AB - Er3+ loaded BaMoO4 was synthesized by the microwave assisted hydrothermal process. Loading of Er3+ ion shifted the absorption band of BaMoO4 towards the longer wavelength and enhanced the absorption of visible light in the solar spectrum. A shift of the absorption edge to the lower energy and four absorption bands located at 390, 489, 524 and, 654 nm attributed to the 4f transitions of 4I 11/2→2H9/2, 4I 15/2→ 4F7/2, 4I 15/2→ 2H11/2, and 4I 15/2→4F9/2; respectively, were observed during DRS analysis. Moreover, Er3+ ion acts as an upconversion luminescence agent by absorbing near infrared light (NIR) thereby emitting upconversion luminescence. Enhanced absorption of the solar energy has been utilized for the degradation of methylene blue dye as a test reaction. Therefore, this work provides a new approach to harvest solar energy for the activation of scheelite crystal structures.
KW - BaMoO
KW - Er
KW - Hydrothermal
KW - Microwave
KW - Upconversion luminescence
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U2 - 10.1016/j.matlet.2012.10.004
DO - 10.1016/j.matlet.2012.10.004
M3 - Article
AN - SCOPUS:84870153899
VL - 91
SP - 294
EP - 297
JO - Materials Letters
JF - Materials Letters
SN - 0167-577X
ER -