9099
As advanced electrodes for direct alcohol fuel cells , graphene - Pd and graphene - Pt composites with a trace of SnO ( 2 ) have been successfully synthesized by a modified electroless plating technique .
 Chemical: alcohol; Chemical: graphene; Chemical: Pd; Chemical: graphene; Chemical: Pt; Chemical: SnO ( 2 )
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: alcohol; Chemical: graphene; Chemical: Pd; Chemical: graphene; Chemical: Pt; Chemical: SnO ( 2 )