6517
Hierarchical assembly of ultrathin hexagonal SnS2 nanosheets onto electrospun TiO2 nanofibers : enhanced photocatalytic activity based on photoinduced interfacial charge transfer .
 Chemical: SnS2; 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: SnS2; Chemical: TiO2