Retraction Note to: Fabrication and characterization of Mg3Y2Ga3O12:Bi3+/TiO2-based UV fluorescent composition for improving the heavy oil viscosity reduction

Autor: Peizhang Xie, Xinxing Wang, Ming Liu
Rok vydání: 2020
Předmět:
Zdroj: Applied Physics A. 126
ISSN: 1432-0630
0947-8396
DOI: 10.1007/s00339-020-03562-x
Popis: Luminescent materials have been extensively explored in the past years for use in white LEDs, considering that previous works have paid little attention to it for other promising applications such as catalysts and water purification. Here we prepared a type of UV luminescent Mg3Y2Ga3O12:Bi3+ phosphor. To characterize the photoluminescence (PL) and structural properties, the Mg3Y2Ga3O12:Bi3+ samples have been recorded by the measurements of XRD, SEM, diffuse reflectance and PL spectra. The XRD and SEM results show that the Mg3Y2Ga3O12:Bi3+ samples belong to an inverse garnet cubic structure with a space group of Ia3d (No. 230) and distribute the particle size at about 30 μm. The PL spectra reveal that the Mg3Y2Ga3O12:Bi3+ samples can only show one emission band at around 350 nm, which can precisely cover over the whole UV spectral region from 290 nm to 410 nm. In view of this PL behavior and the TiO2 absorption band at around 387 nm, we design a type of ceramic substrate, i.e., Mg3Y2Ga3O12:Bi3+/TiO2-based composition, by mixing Mg3Y2Ga3O12:Bi3+ and TiO2. As a result, the photocatalytic properties of Mg3Y2Ga3O12:Bi3+/TiO2-based composition under 254 nm UV irradiation is found to enhance the heavy oil viscosity reduction about ~ 4 times as compared to that of TiO2 and bulk heavy oil.
Databáze: OpenAIRE
Externí odkaz: