AbstS/AgI microstructures were produced by solvothermal DMSO-mediated synthesis using two structures were investigated with of large grains of sulfur covered by smaller grains of AgI. The obtained SEM micrographs revealed that the 1 st method gave larger grains of sulfur in comparison with the 2 nd method. Testing of the microstructures as photocatalysits showed the low activity; as the prepared samples were able to degrade no more than 7 % as it was able to suppress test strains of S. aureus P.aeruginosa ATCC 9027 and amylovora at MBC/MFC 5000 µg/mL, and E. coli ATCC 8739 at 2500 µg/mL. sulfur; silver iodide; solvothermal synthesis; microstructures; photocatalytic activity; biological activity. . j. biol. chem. (Online) Int