No abstract

Proposed CH2O2-sensing mechanism of the flame-made Zn2SnO4 based sensor correlating the resistance change behaviors under exposure to air and CH2O2 at 300 °C.

Correction for ‘Comparative study on formic acid sensing properties of flame-made Zn2SnO4 nanoparticles and its parent metal oxides’ by Matawee Punginsang et al., Phys. Chem. Chem. Phys., 2023, 25, 15407–15421, https://doi.org/10.1039/D3CP00845B.

In this investigation, flame-made La 2 O 3 -loaded WO 3 nanoparticle films prepared with varying La contents (0−2 wt %) and spin-coating cycle numbers (1−6) were comprehensively explored for nitrogen dioxide (NO 2 ) detection. Detailed material analysis revealed the creation of secondary La 2 O 3 nanoparticles on primary monoclinic WO 3 nanoparticles. Gassensing measurements were conducted toward 50−5000 ppb NO 2 at 100−350 °C in dry and humid air (0−80 %RH). The obtained data dictated that the La content of 0.2 wt % and three spincoating cycles provided optimal NO 2 response and response time. Consequently, the 0.2 wt % La 2 O 3 -loaded WO 3 three-cycle spincoated film offered an ultrahigh response of ∼7213.6 and a response time of ∼31.8 s to 5000 ppb NO 2 at a low best sensing temperature of 150 °C in dry air. Moreover, high NO 2 selectivity was attained relative to CH