Abstract
A simple hydrothermal method was used to synthesize crystalline sodium hexaniobate nanorods of high purity in gram quantity by treating Nb 2 O 5 powder in 10 M NaOH at 150 °C without utilizing template molecules. The molecular composition of such material was identified as Na 6 H 2 Nb 6 O 19 ·2H 2 O. SEM revealed that the majority of these hexaniobate rods had a diameter distribution of 200-450 nm and a length distribution of 40-60 μm, though finer rods with a diameter of 50-100 nm could also be found in the product mixture. © 2005 Elsevier B.V. All rights reserved.