Sol-Gel/Hydrothermal Method for the Synthesis of Ultralong (NH_4)_2V_6O_(16)·1.5H_2O Nanobelts

摘要

Ultralong (NH_4)_2V_6O_(16)·1.5H_2O nanobelts have been synthesized by sol-gel method coupled with hydrothermal method using V_2O_5, H_2O_2 and (NH_4)_2SO_4 as raw materials. The synthesis conditions including temperature, reaction time and amount of ammonium sulfate have been optimized. The chemical phase, morphology and microstructure of the as-prepared products were characterized by XRD, FT-IR, FE-SEM/EDX and TEM, respectively. Typical (NH_4)_2V_6O_(16)·1.5H_2O nanobelts as-prepared are several hundreds of micrometers in length, 50-100nm in thickness and 200nm-1μm in width. Oriented Attachment mechanism was proved to be responsible for the formation of (NH_4)_2V_6O_(16)·1.5H_2O ultralong nanobelts. The proposed approach is a facile and cost-saving method, which particularly fits for synthesis of (NH_4)_2V_6O_(16)·1.5H_2O nanobelts on large scale.