Hydrothermal Growth and Hydrogen Selective Sensing of Nickel Oxide Nanowires

Table 1

Percentage response, response time, and recovery time values of sensors presented in this paper, compared with recent literature.

Note		Work .; °C	Concentration ppm	Percentage response %	Response time s	Recovery time s	Reference (year)
n-type	Thin film	125	30000	14	600	540	[25] (2008)
				76	900	600
p-type	Nanoparticle	150	1000	10.8			[26] (2012)
	Thin film	300	3000	29.6	404		[27] (2013)
			6000	45
	Nanoparticle	150	3000	42.5	328	450	[28] (2013)
		175		68	328	1017
		200		62.7	200	774
		225		49.4	243	243
		175	1000	30
	Thin film	160	1000	3.65			[29] (2015)
		180	1000	9.1
			2000	9.5	1980	144
	Nanoparticle	175	1000	22.25	1164	810	[30] (2012)
	Nanoparticle	175	1000	32.4	134	406	[31] (2012)
	Nanowire	200	1000	103	659	900	Present work
		250	1000	107	266	111
		300	1000	91	88	39