Hello,

The methods for preparation of TiO2 sol have been widely reported, such as the one in our recently published paper entitled "Visible light-active sub-5nm anatase TiO 2 for photocatalytic organic pollutant degradation in water and air, and for bacterial disinfection" .

Silver ions can be easily mixed with TiO2 sol during the sol-gel preparation process, or through directly mixing them with the as-prepared sol. Afterwards, you can use UV light or even visible light to convert silver ions to silver nanoparticles, or you can use an additional reducing agent to achieve the reduction. Many reducing agents (mild or strong) can be considered, which can also be referred in our recently published review paper entitled "Synthesis and stabilization of metal nanocatalysts for reduction reactions–a review".

Hope the suggestion may help you to find an effective way for solving your problems.

Regards,

Huawen Hu

An alternative can be to buy a ready pH-neutral sol of TiO2 and apply it together with silver nitrate onto your polymer. Contact details to the producer capable to deliver such product can be found at