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论文类型：期刊论文

发表时间：2012-09-15

发表刊物：MATERIALS LETTERS

收录刊物：SCIE、EI、Scopus

卷号：83

页面范围：130-132

ISSN号：0167-577X

关键字：Nanoparticles; X-ray techniques; Electron microscopy

摘要：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.