High Sensing Performance Toward Acetone Vapor Using TiO2 Flower-Like Nanomaterials

Table 1 Comparison of various TiO₂ nanostructures toward acetone gas sensing performances

Sensing materials	Working temperature (°C)	Concentration (ppm)	Response (R_a/R_g)	Response/recover time (s)	Reference
Nanoporous TiO₂	370	500	25.97	13/8	[25]
TiO₂ nanoparticles	400	200	7.5	240/180	[33]
Nano nanotube	150	1000	2.08	21/38	[34]
TiO₂ nanorods	500	300	13	12/6	[35]
TiO₂ nanoflowers	280	200	~ 7	< 50/< 100	[36]
Ag-TiO₂ nanobelts	260	500	28.25	6/8	[24]
Ag-TiO₂ nanospheres	350	500	29.1	1/47	[14]
TiO₂ nanoparticles	270	500	9.19	10/9	[37]
TiO₂ microsphere	320	100	6.9	–	[38]
Brookite TiO₂	320	100	2.3	3/183	[39]
TiO₂ FLNMs	330	250	33.72	46/24	This work