Table 1. Comparison of Sensing Performances for Reported ZnO-Based Nanocomposites to Ethanol.

materials	working temperature (°C)	response to ethanol	response/recovery time	refs
Ag-ZnO nanoparticles	320	148 (100 ppm)	5 s/9 s	our work
Ag-ZnO nanoparticles	320	33 (200 ppm)		(22)
Ag-ZnO thin films	260	15 (100 ppm)	5 s/27 s	(41)
Ag-ZnO nanoroads	370	20 (20 ppm)	15 s/20 s	(42)
Ag-ZnO nanowires	300	26 (50 ppm)	8 s/>20 s	(43)
Au-ZnO nanoparticles	300	7 (5 ppm)	13 s/>150 s	(44)
Pd-ZnO nanostructures	300	47 (1000 ppm)	3 s/26 s	(45)
Pt-ZnO nanoplates	350	22 (15 ppm)	80 s/150 s	(46)