Crystalline Framework Material Containing Arrays of Vanadium Oxide Nanoclusters: A Polyoxovanadate Framework with Room Temperature NO x Sensing Properties

• Published in: Crystal growth & design Vol. 13; no. 11; pp. 4667 - 4672
• Main Authors: Khan, M. Ishaque, Putrevu, Naga Ravikanth, Ayesh, Samar, Yohannes, Elizabeth H, Cage, Brant, Doedens, Robert J
• Format: Journal Article
• Language: English
• Published: American Chemical Society 06-11-2013
• ISSN: 1528-7483; 1528-7505
• DOI: 10.1021/cg4007444

Transition metal oxide clusters provide attractive building blocks for synthesizing new materials with interesting structural, electronic, and magnetic properties. An interesting framework structure material [CdII 3(H2O)12VIV 16VV 2O36­(OH)6(AO4)]·24H2O (A = V, S), 1, composed of three-dimensional arrays of vanadium oxide nanoclusters {V18O42(AO4)} interconnected by {-O–Cd–O-} bridging groups, has been prepared and characterized. Compound 1, whose structure is resolved at the atomic level by single crystal X-ray structure analysis, exhibits properties suitable for gas sensing applications. Sensor devices fabricated from 1 show promising sensing properties for detecting environmentally detrimental {NO x } (NO and NO2) gases with good sensitivity and reversibility. This is a rare example of a polyoxometalate-based material showing room temperature NO x sensing properties.