2D SnSe nanoflakes decorated with 1D ZnO nanowires for ppb-level NO detection at room temperature.

The detection of air pollutant nitrogen dioxide (NO) is of great importance arising from its great harm to the ecological environment and human health. However, the detection range of most NO sensors is ppm-level, and it is still challenging to achieve lower concentration (ppb-level) NO detection. Herein, 2D tin diselenide nanoflakes decorated with 1D zinc oxide nanowires (SnSe/ZnO) heterojunctions were first reported by facile hydrothermal and ultra-sonication methods.

Development of a rGO-BiVO Heterojunction Humidity Sensor with Boosted Performance.

Humidity sensors with good repeatability, low hysteresis, and low-power consumption are increasingly important for environmental monitoring and industrial control applications. Herein, an impedance-type humidity sensor under low working voltage (5 mV) utilizing a rGO-BiVO nanocomposite is demonstrated. The rGO-BiVO humidity sensor exhibits superior sensing performances, including good repeatability, negligible hysteresis (0.