Transition metal elements-doped SnO₂ for ultrasensitive and rapid ppb-level formaldehyde sensing.

ABSTRACT: Pristine SnO₂, Fe-doped SnO₂ and Ni-doped SnO₂ were synthesized using facile hydrothermal method. Analysis based on XRD, TEM and UV-Vis DRS measurements demonstrated the successful insertion of Fe and Ni dopants into SnO₂ crystal. Formaldehyde-detection measurements revealed that transition metal-doped SnO₂ exhibited improved formaldehyde-sensing properties compared with that of pristine SnO₂. When the amount of incorporated dopant (Fe or Ni) was 4 at.%, the most effective enhancement on sensing performance of SnO₂ was obtained. At 160 °C, the 4 at.% Fe-SnO₂ and 4 at.% Ni-SnO₂ exhibited higher response values of 7.52 and 4.37 with exposure to low-concentration formaldehyde, respectively, whic

SUBMITTER: Han Z 

PROVIDER: S-EPMC9939605 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature