Nanoporous Vanadium Oxide Aerogels and Methods of Preparation

摘要

The present disclosure provides cost-effective sol-gel methods to produce nanostructured, nanoporous vanadium oxides from inexpensive vanadium halides of the formula VOX3. In one aspect, a synthetic method for preparing vanadium (IV,V) mixed oxide gels is described comprising epoxide-assisted gelation of a vanadium halide of the formula VOX3, such as VOCl3. The resulting aerogels are robust and possess similar morphology and reactivity to gels fabricated via the significantly more costly vanadium alkoxide methods.

主权项

1. A method for preparing vanadium oxide aerogels comprising the steps of:
(i) obtaining wet gels by mixing a vanadium halide of the formula VOX3, water, and one or more acid scavenger species in one or more appropriate solvent at an appropriate temperature and allowing the liquid solution to form a gel monolith; (ii) washing the gels in a solvent bath to remove unreacted materials; and, (iii) critically drying the washed wet gels to obtain aerogels; wherein X is a halogen.