Formaldehyde sensors are essential devices in the indoor air quality monitoring and gas
leakage detection in industrial areas. Enormous efforts are made to promote the …

Detection and monitoring of harmful and toxic gases have gained increased interest in
relation to worldwide environmental issues. Semiconducting metal oxide gas sensors have …

The porous flake-like Co 3 O 4 and Co 3 O 4/graphene hybrids with different graphene
contents were prepared through a facile two-step method. The field emission scanning …

A series of In2O3/Au nanorods (NRs) were fabricated and characterized by scanning
electron microscope (SEM), transmission electron microscope (TEM), X–ray diffractometer …

Sensitive and selective determination of H 2 S in human exhalation is essential for
understanding some physiological and pathological processes. However, effective detection …

Hollow SnO 2 nanofibers were prepared by electrospinning followed by calcination
treatment. The carbon materials including graphene, carbon nanotubes and graphene oxide …

In this article, we demonstrated an extremely high-sensitivity formaldehyde (HCHO) gas
sensor, where the graphene oxide (GO) in situ modified two-dimensional (2D) SnO2 …

Analyzing the volatile organic compounds (VOCs) in exhaled breath effectively is crucial to
medical treatment, which can provide a fast and noninvasive way to diagnose disease. Well …

In this study, a series of undoped and Eu-doped SnO 2 nanofibers were synthesized via a
simple electrospinning technique and subsequent calcination treatment. Field-emission …

In this paper, the preparation process and gas sensing performance of Sb-doped three-
dimensional spinel ferrite (3D ZnFe 2 O 4) with well-assembled macroporous spherical …