Facile synthesis and characterization of erythrocyte-like Y-doped PbWO{sub 4} mesocrystals and their photocatalytic activity

Journal Article · Wed Jul 15 00:00:00 EDT 2015 · Materials Characterization

DOI:https://doi.org/10.1016/J.MATCHAR.2015.04.016· OSTI ID:22476109

Xiong, Ying; Wang, Bing; Hu, Wenyuan; Dai, Li

Novel erythrocyte-like Y-doped PbWO{sub 4} mesocrystals with average diameter and thickness of 1.5 and 0.7 μm are fabricated via a facile co-precipitation route at room temperature in the ethylene glycol (EG)-water mixed solvent. Time-dependent samples centrifuged at different times are carefully characterized by powder X-ray diffraction (pXRD), field-emission scanning electron microscopy (FE-SEM), high-resolution transmission electron microscopy (HRTEM) and Raman spectrum. The possible formation mechanism for the novel erythrocyte-like mesocrystals is proposed on the basis of these observations. The photocatalytic activity of the Y-doped PbWO{sub 4} mesocrystals is further investigated in terms of the degradation of the acid orange II under UV irradiation. This simple and environment-friendly strategy presented here offers promising route for the synthesis of other inorganic materials with unique morphologies and interesting properties. - Graphical abstract: Display Omitted - Highlights: • Novel erythrocyte-like Y-doped PbWO{sub 4} mesocrystals are firstly synthesized via a facile co-precipitation route. • The mesocrystals are assembled by small nanoparticles a common crystallographic fashion. • The erythrocyte-like mesocrystals exhibit well photocatalytic activity. • A recrystallization-growth-oriented attachment formation mechanism is proposed.

• OSTI ID: 22476109
• Journal Information: Materials Characterization, Vol. 105; Other Information: Copyright (c) 2015 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1044-5803
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COPRECIPITATION
CRYSTALLOGRAPHY
DOPED MATERIALS
GLYCOLS
IRRADIATION
LEAD TUNGSTATES
MIXED SOLVENTS
NANOPARTICLES
PHOTOCATALYSIS
RAMAN SPECTRA
RECRYSTALLIZATION
RESOLUTION
SCANNING ELECTRON MICROSCOPY
SYNTHESIS
TEMPERATURE RANGE 0273-0400 K
THICKNESS
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION
YTTRIUM ADDITIONS