22552
Herein we report the electrical transport properties of a series of ordered mesoporous ceria - zirconia ( CexZr1 - xO2 , referred to as mp - CZO ) thin films with both a cubic structure of ( 17 +/- 2 ) nm diameter pores and nanocrystalline walls .
 Chemical: ceria - zirconia; Chemical: CexZr1 - xO2; Chemical: CZO
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: ceria - zirconia; Chemical: CexZr1 - xO2; Chemical: CZO