13599
The electrocatalytic activity and stability of the bimetallic Ag - Au systems , found through the interplay of theoretical modelling and empirical observations , serve as a clear example for the rational design of novel catalytic materials and confirm the key role that the adsorption of nitrate plays in the overall nitrate reduction rate .
 Chemical: Ag; Chemical: Au; Chemical: nitrate; Chemical: nitrate
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: Ag; Chemical: Au; Chemical: nitrate; Chemical: nitrate