7844
3D Hierarchical echinus - like titanate spheres ( HETSs ) , serving as the supporting material for CdS nanoparticles , are synthesized via a fast one - step hydrothermal method .
 Chemical: titanate; Chemical: CdS
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: titanate; Chemical: CdS