Table 1. Lattice parameters, crystallite sizes (D) and BET surface areas of all of the prepared samples.

Sample	ZnO hexagonal 79-0208		CeO2 cubic 65-2975	ZnO D (nm)	CeO2 D (nm)	BET surface area (m2/g)
	a (Å)	c (Å)	a (Å)
ZnO	3.262 (1)	5.206 (2)	—	35	—	8.6
CeO2	—	—	5.430(2)	—	9	26.2
ZnO/CeO2(1)	3.273 (9)	5.221 (4)	—	34	—	9.1
ZnO/CeO2(3)	3.268 (8)	5.220 (3)	—	33	—	9.5
ZnO/CeO2(5)	3.273 (9)	5.219 (3)	—	35	—	10.2
ZnO/CeO2(10)	3.270 (9)	5.215 (3)	5.411 (2)	29	6	13.2
ZnO/CeO2(20)	3.271 (9)	5.219 (3)	5.398 (2)	31	7	12.1
ZnO/CeO2(30)	3.266 (1)	5.215 (3)	5.403 (1)	32	8	11.5
ZnO/CeO2(40)	3.267 (3)	5.216 (3)	5.423 (2)	33	10	11.1
ZnO/CeO2(50)	3.262 (2)	5.220 (2)	5.413 (1)	35	11	10.3