Porous corundum-type In2O3 nanosheets: Synthesis and NO2 sensing properties

Simple Route to Obtain Nanostructured CeO2 Microspheres and CO Gas Sensing Performance

“…These can be improved in a material by decreasing its particle size to the nanometer scale, as well as an increase in the porosity [22]. According to what several authors have reported [23–25], the sensitivity of a material is reciprocal to the grain size as long as the depletion region extends over the grain. Thus, there is an importance to get a grain size twice smaller than the depletion layer thickness, and this occur when the grain size is in a nanometer scale ( D  < 2  L , L  = depletion layer).…”

Monodispersed In2O3 mesoporous nanospheres: One-step facile synthesis and the improved gas-sensing performance

“…For obtaining porous In 2 O 3 , one method is through precursor-mediated route [23][24][25]. In this case, In(OH) 3 [26], InOOH [27,28], or similar precursors were firstly prepared. After that, a calcination process is involved, during which the delivery of water or volatile by-products causes the formation of porous In 2 O 3 .…”

“…[35]. Besides the above two listed routes to porous In 2 O 3 , there are several reports about the synthesis of hierarchical or hollow In 2 O 3 micro-/nanostructures (such as lotus root slice-like In 2 O 3 microspheres [28]), with various organic surfactants or coordinating agents, which can also provide huge surface area and so enhanced gas sensing properties.…”

Highly enhanced NO2 sensing performances of Cu-doped In2O3 hierarchical flowers

“…As can be seen from the table, the sensor presented in our work exhibits better sensing performance than those reported in the literatures [30][31][32][33][34][35].…”