Aqueous synthesis and characterization of CdS quantum dots capped with some amino acids and investigations of their photocatalytic activities

SEM images of CdS QDs: (a) Ser-CdS, (b) His-CdS, (c) Ala-CdS. It was found that the average diameter of the Ser-CdS is 8.35 nm, smaller than Ala-CdS (11.5 nm) and His-CdS (9.54 nm).