Table 2.

The hydrogen sensing performance of recent developed individual 1D SMO nanostructures with resistance type response.

Materials	Working Temp. (°C)	Smax	Conc. (ppm)	tresponse	Ref.
SnO2 nanobelt	RT-80	2 (at RT)	20,000	220 s	[92]
ZnO NR	RT	1.02	150	1 min	[93,94]
ZnO NW	RT	1.5	100	64 s	[95,96]
SnO2 NR	RT-350	13 (at 250 °C)	100	-	[97]
ZnO NR	RT	10	1,000	-
TiO2 NR	RT	8	1,000	-	[98]
WO2.72 NR	RT	22	1,000	38s