12125
X - ray absorption fine structure spectroscopy study reveals the structure distortion of the small 2D Co 9 S 8 nanoplates that endows structural stability of the atomically thick Co 9 S 8 - OA hybrid nanosheets .
 Chemical: Co 9 S 8; Chemical: Co 9 S 8
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: Co 9 S 8; Chemical: Co 9 S 8