Room-Temperature Nitric Oxide Gas Sensors Based on NiO/SnO Heterostructures.

Nitric oxide (NO) is a very well-known indoor pollutant, and high concentrations of it in the atmosphere lead to acid rain. Thus, there is great demand for NO sensors that have the ability to work at room temperature. In this work, NiO/SnO heterostructures have been prepared via the polyol process and were tested against different concentrations of NO gas at room temperature.