Graphene and g-C₃N₄-Based Gas Sensors

Table 9

Sensitivity of metal nanopowders decorated graphene sensors.

Ref.	Gas	Nanometal-Gr	Sensitivity (%)	Response time (min)
[97]	H2	Pd-Gr	ΔR = 5	1.0
[98]		Pd-gr	ΔR = 33	1
[99]		Pt-gr	ΔR = 3	—
[104]		Pt-gr	ΔV = 66.1	1.25
[105]		ZnO-Gr0	ΔR = 250	0.35
[106]		Pd-Wo3-rGrO	ΔG = 7200	0.59
[107]		Pt-rGrO	ΔV = 22	—
[108]	NO2	SnO2-gr	ΔR = −6	3.15
[109]		WO3-gr	ΔR = 96	0.42–3.3
[110]		CNT-GrO	ΔR = 20	60
[111]		NiO-GrO	ΔR = 200	—
[112]		ZnO-GrO	ΔR = 25.6	2.75
[113]		CO3O4-GrO	ΔR = 80	<1–2
[114]		SnO2-rGrO	ΔR = 231	2.25
[115]		WO3-rGrO	ΔR = 102	—
[116]	CO2	SnO2-gr	ΔR < 60	0.26
[117]		Al2O3-gr	ΔR = 1084	0.24
[116]		Sb2O3-gr	ΔR < 60	0.26
[118]	LPG	Bi2O3-gr	ΔR = 400	0.26
[119]		MnO2-rGrO	ΔR = 50	0.27