surface-active site

synonym: surface-active centre
https://doi.org/10.1351/goldbook.14097
Surface regular or defect site that can initiate the chemical transformation of reagents.
Source:
PAC, 2011, 83, 931. (Glossary of terms used in photocatalysis and radiation catalysis (IUPAC Recommendations 2011)) on page 993 [Terms] [Paper]