By submitting this form, you are agreeing to the Terms of Use and Privacy Policy.
The Formaldehyde (HCHO) sensor, a suitable module for Arduino & Raspberry Pi, is the best option for monitoring indoor air quality. This is a sensor module for HCHO(CH2O). It may be applied to quantify airborne HCHO. It allows you to determine the quality of the air.
The Global formaldehyde sensor market accounted for $XX Billion in 2021 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2022 to 2030.
Formaldehyde detection with chemical gas sensors based on WO3 nanowires decorated with metal nanoparticles under dark conditions and UV light irradiation.
Using pure tungsten trioxide nanowires (WO3 NWs) and metal nanoparticles decorated WO3 NWs gas sensing layers, formaldehyde gas (CH2O) was detected under low light and UV light exposure.
On commercial alumina substrates with 10-pair interdigitated platinum electrodes, the resistive layers were produced using a single phase of aerosol assisted chemical vapour deposition (AACVD).
The sophisticated gas sensors were tested against three concentrations of formaldehyde gas in the dark and under UV light irradiation at the wavelength of 394 nm.
The elaborated gas sensors were based on pristine WO3 and on WO3 decorated with Au, Pt, Au/Pt, Ni, and Fe nanoparticles. With the exception of the nanomaterial doped with Fe NPs, two main impacts were seen: first, the response time for CH2O desorption was dramatically shortened under UV light irradiation; second, the baseline shift caused by gas inhalation was lessened.
The increased energy that the UV light imparts, speeding up the adsorption and desorption processes, can be attributed to these outcomes.
The results showed that both decorating WO3 NWs with specific metal nanoparticles and operating sensors under UV light irradiation are practical and inexpensive ways to improve gas sensing toward formaldehyde detection, even though combining the two strategies did not produce a stronger synergetic effect.
