کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1618076 | 1005699 | 2011 | 6 صفحه PDF | دانلود رایگان |

A two-step method is presented for the synthesis of one dimensional lead titanate (PbTi3O7) nanotubes. Firstly, titanate nanotubes were prepared by an alkaline hydrothermal process with TiO2 nanopowder as precursor, and then lead titanate nanotubes were formed through an ion-exchange reaction. We found that sodium titanate nanotubes have ion exchangeability with lead ions, while protonated titanate nanotubes have not. For the first time, we distinguished the difference between sodium titanate nanotubes and protonated titanate nanotubes in the ion-exchange process, which reveals a layer space effect of nanotubes in the ion-exchange reaction. In comparison with sodium titanate, the synthesized lead titanate nanotubes show a narrowed bandgap.
► Lead titanate nanotubes PbTi3O7 were firstly synthesized by ion-exchange method.
► Sodium titanate nanotubes have ion exchangeability.
► Lead titanate nanotubes show a distinct red shift on absorption edge.
Journal: Journal of Alloys and Compounds - Volume 509, Issue 20, 19 May 2011, Pages 6061–6066