23490
The absorption spectra of these materials are red - shifted by 115 nm to the visible region of the solar spectrum compared with P25 TiO2 .
 Chemical: P25 TiO2
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: P25 TiO2