Oxide Nanomaterials Based on SnO₂ for Semiconductor Hydrogen Sensors

Table 1

Particle sizes of SnO₂ calculated by using the Scherrer equation, lattice parameters, and specific surface areas of the nanomaterials obtained through thermal treatment of the xerogel.

Sample	Nanomaterial formation conditions		XRD size (nm)	Ssp (m^2/g)	Lattice parameters
	T (°С)	Isothermal processing time			а (Å)	с (Å)
Xerogel	90	24 h	∼3		4.77 ± 0.03	3.171 ± 0.06
SnO2	400	1 h 20 min	4.8		4.732 ± 0.005	3.190 ± 0.005
SnO2	400	2 h 20 min	5.3	110	4.739 ± 0.005	3.180 ± 0.005
SnO2	450	1 h 20 min	6.5	85	4.749 ± 0.005	3.191 ± 0.005
SnO2	500	1 h 20 min	8.3	60	4.745 ± 0.005	3.189 ± 0.005
SnO2	550	1 h 20 min	9.9	48	4.743 ± 0.005	3.185 ± 0.005
SnO2	600	1 h 20 min	12.1	37	4.72 ± 0.005	3.190 ± 0.005