In
this study, porous ZnO ultrathin nanosheets with abundant surface
oxygen vacancies were prepared by a hydrothermal technique followed
by an annealing method using graphene oxide (GO) as a template. The
high specific surface area of GO with ultrathin thickness provided
an important template for the ZnO ultrathin nanosheets. The as-prepared
porous ZnO ultrathin nanosheets exhibited superior acetylacetone sensing
performance. The sensor response of the porous ZnO ultrathin nanosheets
was 191.1 for 100 ppm acetylacetone, which was approximately 4 times
higher than that of ZnO clusters (prepared without GO template) at
340 °C. The porous ZnO ultrathin nanosheets also exhibited excellent
selectivity and operational stability. The excellent gas sensing performance
of the porous ZnO ultrathin nanosheets was due to their high specific
surface area (130.5 m2/g) and abundant surface oxygen vacancy.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.