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Indexed by:期刊论文

Date of Publication:2012-09-15

Journal:MATERIALS LETTERS

Included Journals:SCIE、EI、Scopus

Volume:83

Page Number:130-132

ISSN No.:0167-577X

Key Words:Nanoparticles; X-ray techniques; Electron microscopy

Abstract:Titanium pyrophosphate (TiP2O7) nanocrystals are synthesized using a facile microwave (MW) heating method, in which titanium hydroxide (TH) and H3PO4 (85%) are used as Ti and P sources without surfactant or template assistance. X-ray diffraction results suggest that pure cubic-structured TiP2O7 could be obtained via MW irradiation at 800 W for 5 min. Scanning electron microscope and transmission electron microscope photographs show that the grain sizes of the samples range from 20 nm to 100 nm and vary with the irradiation time. The effects of different sample preparation conditions on the experimental result are also discussed. The band gap energy of as-synthesized TiP2O7 is determined to be 3.8 eV by UV diffuse reflectance spectral analysis. Luminescence spectral analysis shows that nanocrystal TiP2O7 shows white-light emission at 300 nm. (C) 2012 Elsevier B.V. All rights reserved.