Abstract
The room temperature formaldehyde (HCHO) sensor has promising application in practical indoor air pollution detection. In this study, we assembled ZnO nanoparticles modified graphene nanosheets with dipoles by a facile solution process to fabricate a room temperature formaldehyde sensing material zinc oxide-(5-aminonaphthalene-1-sulfonic acid)-reduced graphene oxide (ZnO-ANS-rGO). The prepared ZnO-ANS-rGO sensor could detect as low as 5 ppm HCHO at room temperature. The following inverstigation showed that the outstanding gas sensing performances including high gas selectivity and reliable gas sensing reversibility were attributed to the synergism of modification of 5-aminonaphthalene-1-sulfonic acid (ANS) and ZnO nanoparticles. It was concluded that ANS greatly facilitated the charge transfer from compound to formaldehyde molecules so that the detection could be implemented at lower energy barrier.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
