Table 2.

A comparison of response values between the PANI grafted film sensor and previously reported room-temperature-sensitive polyaniline ammonia gas sensors.

Material	Structure	CNH3/ppm	T/°C	Humidity/%RH	S 1/-	Ref.
PANI	Graft	100	50	dry	20	This work
PANI	Film	40	20 ± 3	30	4.2	[43]
PANI	Nanorod	50	27	50	1.2	[44]
PANI	Nanotube	50	25	40	27	[27]
PANI/(PE-co-GMA)	Nanofiber	25	26 ± 1	25 ± 3	25	[45]
PVDF@PANI	Core–shell	10	25	50	2	[31]
In2O3@PANI	Core–shell	100	20	50	45	[23]
GO/PANI	Hollow Rambutan	100	20	25	31	[33]
WO3@PANI	Nanoplate	100	25	40	33	[22]
PANI/TiO2	Tube	100	R.T.	dry	16	[46]
PANI/cellulose	Nanofiber	10	R.T.	45	5	[30]
PANI:PSS/Ti3C2TX	Nanoplate	10	24	20	3.9	[18]
PANI/HNTs	Nanotube	50	25	50	2.6	[26]

¹ Some values of S were recalculated to match our definition S = ΔR_NH3/R₀.