Here we present a class of formaldehyde (HCHO) gas sensors with strong responses based on ordered mesostructured In 2 O 3 nanorod arrays, which are synthesized via the nanocasting route by directly using the solvent-extracted mesoporous silica as a hard template. By choosing mesoporous silica with different pore sizes and interconnectivity as templates and varying the loading of indium resource on the silica template, we have obtained a series of mesostructured In 2 O 3 nanorod arrays with different textural parameters such as specific surface area, pore size, nanorod diameter, etc. The gas sensing properties for formaldehyde (HCHO) of the In 2 O 3 specimens were examined. The results reveal those mesostructured In 2 O 3 nanorod arrays possess much stronger responses to HCHO even at low concentrations than the bulk In 2 O 3, and larger specific surface areas and pore sizes as well as smaller nanorod diameters would be beneficial for enhancing the sensing properties of In 2 O 3 .
No takes yet. Share an insight, caveat, or question.
Lai et al. (2010) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: