Table 5.

Summary of various MoS₂ heterostructures NO₂ sensors

Sensing film	Electrodes	Conc. (ppm)	Def	T (°C)	S (%)	Res time (s)	Rec time (S)	References
Graphene/MoS2	Au	50	$\frac{\left(R_{\text{gas}}-R_{\text{air}}\right)}{R_{\text{air}}}$	RT	83	–	–	[332]
rGO/MoS2	Au	2	$\frac{\left(R_{\text{gas}}-R_{\text{air}}\right)}{R_{\text{air}}}$	60	59.8	–	–	[333]
rGO/MoS2	Au	3	$\frac{R_{\text{gas}}}{R_{\text{air}}}$	160	1.23	8	20	[351]
Graphene/MoS2	Pt/Ti	0.5	$\frac{\left(R_{\text{gas}}-R_{\text{air}}\right)}{R_{\text{air}}}$	200	10	21.6	29.4	[118]
MoS2/graphene	Au	10	$\frac{\left(I_{\text{air}}-I_{\text{gas}}\right)}{I_{\text{air}}}$	200	69	0.7	0.9	[334]
Graphene/MoS2	–	500	$\frac{\left(R_{\text{gas}}-R_{\text{air}}\right)}{R_{\text{air}}}$	RT	61	22	35	[335]
rGO/MoS2/CdS	NA	0.2	$\frac{\left(R_{\text{gas}}-R_{\text{air}}\right)}{R_{\text{air}}}$	75	27.4	25	34	[336]
MoS2/In(OH)3	NA	100	$\frac{R_{\text{air}}}{R_{\text{gas}}}$	RT	15.4	1.6	NA	[338]
MoS2/MoO3	Au	10	$\frac{\left(R_{\text{gas}}-R_{\text{air}}\right)}{R_{\text{air}}}$	RT	33.5	19	182	[339]
SnS2/MoS2	Au	100	$\frac{R_{\text{air}}}{R_{\text{gas}}}$	RT	25.9	2	28.2	[341]
MoS2/CNT	Ag	50	$\frac{R_{\text{gas}}}{R_{\text{air}}}$	RT	12.6	–	–	[342]
MoS2/p-Si NWs	Ag	50	$\frac{\left(R_{\text{gas}}-R_{\text{air}}\right)}{R_{\text{air}}}$	RT	28.4	–	–	[343]
MoS2/ZnO NW	Silver	50	$\frac{\left(R_{\text{gas}}-R_{\text{air}}\right)}{R_{\text{air}}}$	200	29.4	300	–	[344]
ZnO NW/MoS2	Au/Ti	50 ppb	$\frac{\left(R_{\text{gas}}-R_{\text{air}}\right)}{R_{\text{air}}}$	60	63	–	–	[345]
MoS2/In2O3 NT	–	50	$\frac{R_{\text{air}}}{R_{\text{gas}}}$	RT	209	–	–	[346]
MoS2/ZnO	Au	5	$\frac{\left(I_{\text{gas}}-I_{\text{air}}\right)}{I_{\text{air}}}$	RT	3050	40	1000	[347]
MoS2/SnO2 NPs	Au/Ti	5	$\frac{R_{\text{gas}}}{R_{\text{air}}}$	RT	18.7	74	NA	[348]
Ag-Fe2O3/MoS2	Ag-Pd	5	$\frac{\left(R_{\text{gas}}-R_{\text{air}}\right)}{R_{\text{air}}}$	120	202.2	81	355	[27]
CdTe/MoS2	Ag	10	$\frac{\left(R_{\text{gas}}-R_{\text{air}}\right)}{R_{\text{air}}}$	RT	40	16	114	[350]
MoS2/SnO2	Au	10	$\frac{\left(R_{\text{gas}}-R_{\text{air}}\right)}{R_{\text{air}}}$	RT	28	408	162	[352]