Comment by westurner

"Extraordinary Improvement of Gas-Sensing Performances in SnO2 Nanofibers Due to Creation of Local p–n Heterojunctions by Loading Reduced Graphene Oxide Nanosheets" (2015) https://pubs.acs.org/doi/10.1021/am5071656

"Highly Sensitive and Selective SnO2-Gr Sensor Photoactivated for Detection of Low NO2 Concentrations at Room Temperature" (2024) https://www.mdpi.com/2079-4991/14/24/1994 ; UV photo activation of SnO2-Gr sensors

"Engineering of SnO2–Graphene Oxide Nanoheterojunctions for Selective Room-Temperature Chemical Sensing and Optoelectronic Devices" (2020) https://pubs.acs.org/doi/10.1021/acsami.0c09178

"Humidity-sensing Performance of Graphene/SnO 2 Nanocomposites" (2025) https://sensors.myu-group.co.jp/sm_pdf/SM4049.pdf ; 28s recovery time instead of minutes