30175
In addition , the porous carbon coating infiltrated into the nanocable matrix endows the mat with excellent flexibility and enables robust , large - area ( 10 x 10 cm ) fabrication , representing a significant advantage over previous brittle ceramic nanofibrous mat photocatalyst substrates .
 Chemical: carbon
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: carbon