Silver-modified hexagonal mesoporous silica (Ag-HMS) was in situ synthesized with the sol-gel method and by using ［Ag(NH3)2］+ as the silver source.The structure and properties were characterized by XRD

FT-IR

TG-DTA

UV-Vis

ESEM

EDS and N2 adsorption/desorption

and the antibacterial ability was investigated.The results indicated that Ag-HMS had favorable mesoporous structure

thermal stability and absorption ability of ultraviolet radiation

the silver species were evenly distributed in the material and existed in the form of framework/non-framework.As compared with HMS

Ag-HMS changed significantly in terms of demoulding thermochemical process

pore volume

mesoporous degree of orderliness

specific surface area

and particle shape.The results of antibacterial experiments showed that Ag-HMS had strong inhibition on B.subtilis

E.coil

G.bacillus and S.aureus.Especially for B.subtilis and E.coil

at the dose of Ag-HMS up to 1.00 mg·L-1

these two bacteria were entirely killed after incubation for 12 h.