Highly sensitive gas sensors with remarkably low detection limits are attractive for diverse
practical application fields including real-time environmental monitoring, exhaled breath …

High-performance gas sensors prepared using p-type oxide semiconductors such as NiO,
CuO, Cr 2 O 3, Co 3 O 4, and Mn 3 O 4 were reviewed. The ionized adsorption of oxygen on …

The novel brush-like (B–) SnO 2@ ZnO hierarchical nanostructures (HNSs) are successfully
synthesized by using a simple two–step hydrothermal method. The SnO 2 nanowires (NWs) …

Increased application of engineered nano particles (ENPs) in production of various
appliances and consumer items is increasing their presence in the natural environment …

Hybrid mesoporous metal oxides show promising attributes in the field of relative gas
sensors due to the combined opportunities provided by the high specific surface area and …

Traditional semiconducting metal oxide-based gas sensors are always limited on low
surface areas and high operating temperatures. Considering the high surface area and high …

SnO 2 nanoparticles were uniformly grown on the surfaces of ZnO nanowires by a simple
hydrothermal process to form one-dimensional ZnO-SnO 2 hetero-structured nanowires. The …

Gas sensors based on metal oxides have attracted wide attention, due to their inherent
advantages such as low cost, small size, fast response, and easy usage. Recently, much …

Abstract γ-Fe 2 O 3 as an excellent materials has been extensively used in gas-sensing.
However, the γ-Fe 2 O 3 gas-sensors demands for high working temperatures and shows …

P-type Co 3 O 4 has received ever-growing interest as a promising gas-sensing material
due to the unique advantages of low-cost, earth abundance and considerable electrical …