27745
The output voltage and current density were increased by a factor of 5 . 0 and 2 . 9 , respectively , when adsorbed with catechin of a saturated concentration , because of the charge transfer from catechin to TiO2 .
 Chemical: catechin; Chemical: catechin; Chemical: 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: catechin; Chemical: catechin; Chemical: TiO2