6972
Furthermore , super - resolution mapping of the reaction sites revealed that visible - light - induced reduction reactions preferentially occurred on the TiO ( 2 ) surface within a distance of a few tens of nanometers around the deposited Au nanoparticles .
 Chemical: TiO ( 2 ); Chemical: Au
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: TiO ( 2 ); Chemical: Au