25605
The preferential adsorption of Cs + to the silica surface is traced to the weak hydration of neutral silanols and the resulting hydrophobic expulsion of weakly hydrated ions from bulk solution to the interface .
 Chemical: Cs +; Chemical: silica; Chemical: silanols
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: Cs +; Chemical: silica; Chemical: silanols